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4.14.263-rc1 review

PATCH In review Greg Kroah-Hartman 2 participants 190 messages Jan 24, 2022 – Jan 25, 2022 Page 1 of 2

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Greg Kroah-Hartman

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cover 4.14.263-rc1 review

This is the start of the stable review cycle for the 4.14.263 release. There are 186 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.

Responses should be made by Wed, 26 Jan 2022 18:39:11 +0000. Anything received after that time might be too late.

The whole patch series can be found in one patch at:

	https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.263-rc1.gz

or in the git tree and branch at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y
and the diffstat can be found below.

thanks,

greg k-h

-------------
Pseudo-Shortlog of commits:

Greg Kroah-Hartman <[email protected]>

    Linux 4.14.263-rc1

Trond Myklebust <[email protected]>
NFSv4: Initialise connection to the server in nfs4_alloc_client()

Michael Braun <[email protected]>
gianfar: fix jumbo packets+napi+rx overrun crash

Andy Spencer <[email protected]>
gianfar: simplify FCS handling and fix memory leak

Amir Goldstein <[email protected]>
fuse: fix live lock in fuse_iget()

Miklos Szeredi <[email protected]>
fuse: fix bad inode

Dave Airlie <[email protected]>
drm/ttm/nouveau: don't call tt destroy callback on alloc failure.

Ben Hutchings <[email protected]>
mips,s390,sh,sparc: gup: Work around the "COW can break either way" issue

Miaoqian Lin <[email protected]>

    lib82596: Fix IRQ check in sni_82596_probe

Matthias Schiffer <[email protected]>
scripts/dtc: dtx_diff: remove broken example from help text

Sergey Shtylyov <[email protected]>
bcmgenet: add WOL IRQ check

Kevin Bracey <[email protected]>
net_sched: restore "mpu xxx" handling

Tudor Ambarus <[email protected]>
dmaengine: at_xdmac: Fix at_xdmac_lld struct definition

Tudor Ambarus <[email protected]>
dmaengine: at_xdmac: Fix lld view setting

Tudor Ambarus <[email protected]>
dmaengine: at_xdmac: Print debug message after realeasing the lock

Tudor Ambarus <[email protected]>
dmaengine: at_xdmac: Don't start transactions at tx_submit level

Guillaume Nault <[email protected]>
libcxgb: Don't accidentally set RTO_ONLINK in cxgb_find_route()

Eric Dumazet <[email protected]>
netns: add schedule point in ops_exit_list()

Robert Hancock <[email protected]>
net: axienet: fix number of TX ring slots for available check

Robert Hancock <[email protected]>
net: axienet: Wait for PhyRstCmplt after core reset

Eric Dumazet <[email protected]>
af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress

Miaoqian Lin <[email protected]>
parisc: pdc_stable: Fix memory leak in pdcs_register_pathentries

Tobias Waldekranz <[email protected]>
net/fsl: xgmac_mdio: Fix incorrect iounmap when removing module

Tobias Waldekranz <[email protected]>
powerpc/fsl/dts: Enable WA for erratum A-009885 on fman3l MDIO buses

Anders Roxell <[email protected]>
powerpc/cell: Fix clang -Wimplicit-fallthrough warning

Chengguang Xu <[email protected]>
RDMA/rxe: Fix a typo in opcode name

Yixing Liu <[email protected]>
RDMA/hns: Modify the mapping attribute of doorbell to device

Lukas Bulwahn <[email protected]>
Documentation: refer to config RANDOMIZE_BASE for kernel address-space randomization

Ben Hutchings <[email protected]>
firmware: Update Kconfig help text for Google firmware

Christian König <[email protected]>
drm/radeon: fix error handling in radeon_driver_open_kms

Marek Vasut <[email protected]>
crypto: stm32/crc32 - Fix kernel BUG triggered in probe()

Theodore Ts'o <[email protected]>
ext4: don't use the orphan list when migrating an inode

Ye Bin <[email protected]>
ext4: Fix BUG_ON in ext4_bread when write quota data

Luís Henriques <[email protected]>
ext4: set csum seed in tmp inode while migrating to extents

Jan Kara <[email protected]>
ext4: make sure quota gets properly shutdown on error

Lucas Stach <[email protected]>
drm/etnaviv: limit submit sizes

Ilan Peer <[email protected]>
iwlwifi: mvm: Increase the scan timeout guard to 30 seconds

Andrey Ryabinin <[email protected]>
cputime, cpuacct: Include guest time in user time in cpuacct.stat

Lukas Wunner <[email protected]>
serial: Fix incorrect rs485 polarity on uart open

Petr Cvachoucek <[email protected]>
ubifs: Error path in ubifs_remount_rw() seems to wrongly free write buffers

Yauhen Kharuzhy <[email protected]>
power: bq25890: Enable continuous conversion for ADC at charging

Tzung-Bi Shih <[email protected]>
ASoC: mediatek: mt8173: fix device_node leak

Christoph Hellwig <[email protected]>
scsi: sr: Don't use GFP_DMA

Tianjia Zhang <[email protected]>
MIPS: Octeon: Fix build errors using clang

Lakshmi Sowjanya D <[email protected]>
i2c: designware-pci: Fix to change data types of hcnt and lcnt parameters

Ye Guojin <[email protected]>
MIPS: OCTEON: add put_device() after of_find_device_by_node()

Takashi Iwai <[email protected]>
ALSA: seq: Set upper limit of processed events

Christophe Leroy <[email protected]>
w1: Misuse of get_user()/put_user() reported by sparse

Joakim Tjernlund <[email protected]>
i2c: mpc: Correct I2C reset procedure

Michael Ellerman <[email protected]>
powerpc/smp: Move setup_profiling_timer() under CONFIG_PROFILING

Heiner Kallweit <[email protected]>
i2c: i801: Don't silently correct invalid transfer size

Nicholas Piggin <[email protected]>
powerpc/watchdog: Fix missed watchdog reset due to memory ordering race

Julia Lawall <[email protected]>
powerpc/btext: add missing of_node_put

Julia Lawall <[email protected]>
powerpc/cell: add missing of_node_put

Julia Lawall <[email protected]>
powerpc/powernv: add missing of_node_put

Julia Lawall <[email protected]>
powerpc/6xx: add missing of_node_put

John David Anglin <[email protected]>
parisc: Avoid calling faulthandler_disabled() twice

Lukas Wunner <[email protected]>
serial: core: Keep mctrl register state and cached copy in sync

Lukas Wunner <[email protected]>
serial: pl010: Drop CR register reset on set_termios

Russell King (Oracle) <[email protected]>
net: phy: marvell: configure RGMII delays for 88E1118

Joe Thornber <[email protected]>
dm space map common: add bounds check to sm_ll_lookup_bitmap()

Joe Thornber <[email protected]>
dm btree: add a defensive bounds check to insert_at()

Ping-Ke Shih <[email protected]>

    mac80211: allow non-standard VHT MCS-10/11

Florian Fainelli <[email protected]>
net: mdio: Demote probed message to debug print

Josef Bacik <[email protected]>
btrfs: remove BUG_ON(!eie) in find_parent_nodes

Josef Bacik <[email protected]>
btrfs: remove BUG_ON() in find_parent_nodes()

Kirill A. Shutemov <[email protected]>
ACPICA: Hardware: Do not flush CPU cache when entering S4 and S5

Rafael J. Wysocki <[email protected]>
ACPICA: Executer: Fix the REFCLASS_REFOF case in acpi_ex_opcode_1A_0T_1R()

Rafael J. Wysocki <[email protected]>
ACPICA: Utilities: Avoid deleting the same object twice in a row

Mark Langsdorf <[email protected]>
ACPICA: actypes.h: Expand the ACPI_ACCESS_ definitions

Kyeong Yoo <[email protected]>
jffs2: GC deadlock reading a page that is used in jffs2_write_begin()

Randy Dunlap <[email protected]>
um: registers: Rename function names to avoid conflicts and build problems

Johannes Berg <[email protected]>
iwlwifi: remove module loading failure message

Johannes Berg <[email protected]>
iwlwifi: fix leaks/bad data after failed firmware load

Zekun Shen <[email protected]>
ath9k: Fix out-of-bound memcpy in ath9k_hif_usb_rx_stream

Kai-Heng Feng <[email protected]>
usb: hub: Add delay for SuperSpeed hub resume to let links transit to U0

Thierry Reding <[email protected]>
arm64: tegra: Adjust length of CCPLEX cluster MMIO region

Ulf Hansson <[email protected]>
mmc: core: Fixup storing of OCR for MMC_QUIRK_NONSTD_SDIO

Zhou Qingyang <[email protected]>
media: saa7146: hexium_gemini: Fix a NULL pointer dereference in hexium_attach()

Sean Young <[email protected]>
media: igorplugusb: receiver overflow should be reported

Paolo Abeni <[email protected]>
bpf: Do not WARN in bpf_warn_invalid_xdp_action()

Suresh Kumar <[email protected]>
net: bonding: debug: avoid printing debug logs when bond is not notifying peers

Sebastian Gottschall <[email protected]>
ath10k: Fix tx hanging

Johannes Berg <[email protected]>
iwlwifi: mvm: synchronize with FW after multicast commands

Mauro Carvalho Chehab <[email protected]>

    media: m920x: don't use stack on USB reads

Zhou Qingyang <[email protected]>
media: saa7146: hexium_orion: Fix a NULL pointer dereference in hexium_attach()

James Hilliard <[email protected]>
media: uvcvideo: Increase UVC_CTRL_CONTROL_TIMEOUT to 5 seconds.

Xiongwei Song <[email protected]>
floppy: Add max size check for user space request

Neal Liu <[email protected]>
usb: uhci: add aspeed ast2600 uhci support

Zekun Shen <[email protected]>
mwifiex: Fix skb_over_panic in mwifiex_usb_recv()

Chengfeng Ye <[email protected]>
HSI: core: Fix return freed object in hsi_new_client

Hans de Goede <[email protected]>
gpiolib: acpi: Do not set the IRQ type if the IRQ is already in use

Martyn Welch <[email protected]>
drm/bridge: megachips: Ensure both bridges are probed before registration

Danielle Ratson <[email protected]>
mlxsw: pci: Add shutdown method in PCI driver

Lukas Bulwahn <[email protected]>
ARM: imx: rename DEBUG_IMX21_IMX27_UART to DEBUG_IMX27_UART

Zheyu Ma <[email protected]>
media: b2c2: Add missing check in flexcop_pci_isr:

José Expósito <[email protected]>
HID: apple: Do not reset quirks when the Fn key is not found

Pavankumar Kondeti <[email protected]>
usb: gadget: f_fs: Use stream_open() for endpoint files

Ben Skeggs <[email protected]>
drm/nouveau/pmu/gm200-: avoid touching PMU outside of DEVINIT/PREOS/ACR

Zekun Shen <[email protected]>
ar5523: Fix null-ptr-deref with unexpected WDCMSG_TARGET_START reply

Alexander Aring <[email protected]>
fs: dlm: filter user dlm messages for kernel locks

Wei Yongjun <[email protected]>
Bluetooth: Fix debugfs entry leak in hci_register_dev()

Kamal Heib <[email protected]>
RDMA/cxgb4: Set queue pair state when being queried

Randy Dunlap <[email protected]>
mips: bcm63xx: add support for clk_set_parent()

Randy Dunlap <[email protected]>
mips: lantiq: add support for clk_set_parent()

Wei Yongjun <[email protected]>
misc: lattice-ecp3-config: Fix task hung when firmware load failed

Jiasheng Jiang <[email protected]>
ASoC: samsung: idma: Check of ioremap return value

Xiongfeng Wang <[email protected]>
iommu/iova: Fix race between FQ timeout and teardown

Arnd Bergmann <[email protected]>

    dmaengine: pxa/mmp: stop referencing config->slave_id

Avihai Horon <[email protected]>
RDMA/core: Let ib_find_gid() continue search even after empty entry

Bart Van Assche <[email protected]>
scsi: ufs: Fix race conditions related to driver data

Jiasheng Jiang <[email protected]>
uio: uio_dmem_genirq: Catch the Exception

Kees Cook <[email protected]>
char/mwave: Adjust io port register size

Bixuan Cui <[email protected]>
ALSA: oss: fix compile error when OSS_DEBUG is enabled

Peiwei Hu <[email protected]>
powerpc/prom_init: Fix improper check of prom_getprop()

Kamal Heib <[email protected]>
RDMA/hns: Validate the pkey index

Takashi Iwai <[email protected]>
ALSA: hda: Add missing rwsem around snd_ctl_remove() calls

Takashi Iwai <[email protected]>
ALSA: PCM: Add missing rwsem around snd_ctl_remove() calls

Takashi Iwai <[email protected]>
ALSA: jack: Add missing rwsem around snd_ctl_remove() calls

Jan Kara <[email protected]>
ext4: avoid trim error on fs with small groups

Pavel Skripkin <[email protected]>
net: mcs7830: handle usb read errors properly

Dominik Brodowski <[email protected]>
pcmcia: fix setting of kthread task states

Jiasheng Jiang <[email protected]>
can: xilinx_can: xcan_probe(): check for error irq

Marc Kleine-Budde <[email protected]>
can: softing: softing_startstop(): fix set but not used variable warning

Chen Jun <[email protected]>
tpm: add request_locality before write TPM_INT_ENABLE

Miaoqian Lin <[email protected]>
spi: spi-meson-spifc: Add missing pm_runtime_disable() in meson_spifc_probe

Jiasheng Jiang <[email protected]>
fsl/fman: Check for null pointer after calling devm_ioremap

Eric Dumazet <[email protected]>
ppp: ensure minimum packet size in ppp_write()

Zhou Qingyang <[email protected]>
pcmcia: rsrc_nonstatic: Fix a NULL pointer dereference in nonstatic_find_mem_region()

Zhou Qingyang <[email protected]>
pcmcia: rsrc_nonstatic: Fix a NULL pointer dereference in __nonstatic_find_io_region()

Zhang Zixun <[email protected]>
x86/mce/inject: Avoid out-of-bounds write when setting flags

Wei Yongjun <[email protected]>
usb: ftdi-elan: fix memory leak on device disconnect

Wang Hai <[email protected]>
media: msi001: fix possible null-ptr-deref in msi001_probe()

Anton Vasilyev <[email protected]>
media: dw2102: Fix use after free

Li Hua <[email protected]>
sched/rt: Try to restart rt period timer when rt runtime exceeded

Robert Schlabbach <[email protected]>
media: si2157: Fix "warm" tuner state detection

Zhou Qingyang <[email protected]>
media: saa7146: mxb: Fix a NULL pointer dereference in mxb_attach()

Zhou Qingyang <[email protected]>

    media: dib8000: Fix a memleak in dib8000_init()

Tasos Sahanidis <[email protected]>
floppy: Fix hang in watchdog when disk is ejected

Lino Sanfilippo <[email protected]>
serial: amba-pl011: do not request memory region twice

Zhou Qingyang <[email protected]>
drm/radeon/radeon_kms: Fix a NULL pointer dereference in radeon_driver_open_kms()

Zhou Qingyang <[email protected]>
drm/amdgpu: Fix a NULL pointer dereference in amdgpu_connector_lcd_native_mode()

Dmitry Baryshkov <[email protected]>
arm64: dts: qcom: msm8916: fix MMC controller aliases

Florian Westphal <[email protected]>
netfilter: bridge: add support for pppoe filtering

Dafna Hirschfeld <[email protected]>
media: mtk-vcodec: call v4l2_m2m_ctx_release first when file is released

Tudor Ambarus <[email protected]>
tty: serial: atmel: Call dma_async_issue_pending()

Tudor Ambarus <[email protected]>
tty: serial: atmel: Check return code of dmaengine_submit()

Chengfeng Ye <[email protected]>
crypto: qce - fix uaf on qce_ahash_register_one

Wang Hai <[email protected]>
media: dmxdev: fix UAF when dvb_register_device() fails

Pavel Skripkin <[email protected]>
Bluetooth: stop proccessing malicious adv data

Dongliang Mu <[email protected]>
media: em28xx: fix memory leak in em28xx_init_dev

Bryan O'Donoghue <[email protected]>
wcn36xx: Indicate beacon not connection loss on MISSED_BEACON_IND

Maxime Ripard <[email protected]>
clk: bcm-2835: Remove rounding up the dividers

Maxime Ripard <[email protected]>
clk: bcm-2835: Pick the closest clock rate

Wang Hai <[email protected]>
Bluetooth: cmtp: fix possible panic when cmtp_init_sockets() fails

Yifeng Li <[email protected]>
PCI: Add function 1 DMA alias quirk for Marvell 88SE9125 SATA controller

Gang Li <[email protected]>
shmem: fix a race between shmem_unused_huge_shrink and shmem_evict_inode

Johan Hovold <[email protected]>
can: softing_cs: softingcs_probe(): fix memleak on registration failure

Johan Hovold <[email protected]>
media: stk1160: fix control-message timeouts

Johan Hovold <[email protected]>
media: pvrusb2: fix control-message timeouts

Johan Hovold <[email protected]>
media: redrat3: fix control-message timeouts

Michael Kuron <[email protected]>
media: dib0700: fix undefined behavior in tuner shutdown

Johan Hovold <[email protected]>
media: s2255: fix control-message timeouts

Johan Hovold <[email protected]>
media: cpia2: fix control-message timeouts

Johan Hovold <[email protected]>
media: em28xx: fix control-message timeouts

Johan Hovold <[email protected]>
media: mceusb: fix control-message timeouts

Johan Hovold <[email protected]>
media: flexcop-usb: fix control-message timeouts

Mateusz Jończyk <[email protected]>
rtc: cmos: take rtc_lock while reading from CMOS

Krzysztof Kozlowski <[email protected]>
nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind()

Jason Gerecke <[email protected]>
HID: wacom: Avoid using stale array indicies to read contact count

Jason Gerecke <[email protected]>
HID: wacom: Ignore the confidence flag when a touch is removed

Jann Horn <[email protected]>
HID: uhid: Fix worker destroying device without any protection

Desmond Cheong Zhi Xi <[email protected]>
Bluetooth: fix init and cleanup of sco_conn.timeout_work

Desmond Cheong Zhi Xi <[email protected]>
Bluetooth: schedule SCO timeouts with delayed_work

Larry Finger <[email protected]>
rtlwifi: rtl8192cu: Fix WARNING when calling local_irq_restore() with interrupts enabled

Johan Hovold <[email protected]>
media: uvcvideo: fix division by zero at stream start

Christophe JAILLET <[email protected]>
orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc()

Nathan Chancellor <[email protected]>
drm/i915: Avoid bitwise vs logical OR warning in snb_wm_latency_quirk()

Nathan Chancellor <[email protected]>
staging: wlan-ng: Avoid bitwise vs logical OR warning in hfa384x_usb_throttlefn()

Eric Biggers <[email protected]>
random: fix data race on crng init time

Eric Biggers <[email protected]>
random: fix data race on crng_node_pool

Brian Silverman <[email protected]>

    can: gs_usb: gs_can_start_xmit(): zero-initialize hf->{flags,reserved}

Marc Kleine-Budde <[email protected]>
can: gs_usb: fix use of uninitialized variable, detach device on reception of invalid USB data

Andy Shevchenko <[email protected]>

    mfd: intel-lpss: Fix too early PM enablement in the ACPI ->probe()

Alan Stern <[email protected]>
USB: Fix "slab-out-of-bounds Write" bug in usb_hcd_poll_rh_status

Alan Stern <[email protected]>
USB: core: Fix bug in resuming hub's handling of wakeup requests

Johan Hovold <[email protected]>
Bluetooth: bfusb: fix division by zero in send path

-------------

Diffstat:

 Documentation/admin-guide/hw-vuln/spectre.rst      |   2 +-
 Makefile                                           |   4 +-
 arch/arm/Kconfig.debug                             |  14 +-
 arch/arm/include/debug/imx-uart.h                  |  18 +-
 arch/arm64/boot/dts/nvidia/tegra186.dtsi           |   2 +-
 arch/arm64/boot/dts/qcom/msm8916.dtsi              |   4 +-
 arch/mips/bcm63xx/clk.c                            |   6 +
 arch/mips/cavium-octeon/octeon-platform.c          |   2 +
 arch/mips/cavium-octeon/octeon-usb.c               |   1 +
 arch/mips/include/asm/octeon/cvmx-bootinfo.h       |   4 +-
 arch/mips/lantiq/clk.c                             |   6 +
 arch/mips/mm/gup.c                                 |   9 +-
 arch/parisc/kernel/traps.c                         |   2 +-
 arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi      |   2 +
 arch/powerpc/kernel/btext.c                        |   4 +-
 arch/powerpc/kernel/prom_init.c                    |   2 +-
 arch/powerpc/kernel/smp.c                          |   2 +
 arch/powerpc/kernel/watchdog.c                     |  41 ++-
 arch/powerpc/platforms/cell/iommu.c                |   1 +
 arch/powerpc/platforms/cell/pervasive.c            |   1 +
 arch/powerpc/platforms/embedded6xx/hlwd-pic.c      |   1 +
 arch/powerpc/platforms/powernv/opal-lpc.c          |   1 +
 arch/s390/mm/gup.c                                 |   9 +-
 arch/sh/mm/gup.c                                   |   9 +-
 arch/sparc/mm/gup.c                                |   9 +-
 arch/um/include/shared/registers.h                 |   4 +-
 arch/um/os-Linux/registers.c                       |   4 +-
 arch/um/os-Linux/start_up.c                        |   2 +-
 arch/x86/kernel/cpu/mcheck/mce-inject.c            |   2 +-
 arch/x86/um/syscalls_64.c                          |   3 +-
 drivers/acpi/acpica/exoparg1.c                     |   3 +-
 drivers/acpi/acpica/hwesleep.c                     |   4 +-
 drivers/acpi/acpica/hwsleep.c                      |   4 +-
 drivers/acpi/acpica/hwxfsleep.c                    |   2 -
 drivers/acpi/acpica/utdelete.c                     |   1 +
 drivers/block/floppy.c                             |   6 +-
 drivers/bluetooth/bfusb.c                          |   3 +
 drivers/char/mwave/3780i.h                         |   2 +-
 drivers/char/random.c                              |  61 ++--
 drivers/char/tpm/tpm_tis_core.c                    |   8 +
 drivers/clk/bcm/clk-bcm2835.c                      |  13 +-
 drivers/crypto/qce/sha.c                           |   2 +-
 drivers/crypto/stm32/stm32_crc32.c                 |   4 +-
 drivers/dma/at_xdmac.c                             |  32 +-
 drivers/dma/mmp_pdma.c                             |   6 -
 drivers/dma/pxa_dma.c                              |   7 -
 drivers/firmware/google/Kconfig                    |   6 +-
 drivers/gpio/gpiolib-acpi.c                        |  15 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c     |   6 +
 .../drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c   |  40 ++-
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c       |   6 +
 drivers/gpu/drm/i915/intel_pm.c                    |   6 +-
 drivers/gpu/drm/nouveau/nouveau_sgdma.c            |   9 +-
 drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c     |  37 ++-
 drivers/gpu/drm/radeon/radeon_kms.c                |  42 +--
 drivers/gpu/drm/ttm/ttm_tt.c                       |   2 -
 drivers/hid/hid-apple.c                            |   2 +-
 drivers/hid/uhid.c                                 |  29 +-
 drivers/hid/wacom_wac.c                            |  33 +-
 drivers/hsi/hsi_core.c                             |   1 +
 drivers/i2c/busses/i2c-designware-pcidrv.c         |   8 +-
 drivers/i2c/busses/i2c-i801.c                      |  15 +-
 drivers/i2c/busses/i2c-mpc.c                       |  23 +-
 drivers/infiniband/core/device.c                   |   3 +-
 drivers/infiniband/hw/cxgb4/qp.c                   |   1 +
 drivers/infiniband/hw/hns/hns_roce_main.c          |   5 +-
 drivers/infiniband/sw/rxe/rxe_opcode.c             |   2 +-
 drivers/iommu/iova.c                               |   3 +-
 drivers/md/persistent-data/dm-btree.c              |   8 +-
 drivers/md/persistent-data/dm-space-map-common.c   |   5 +
 drivers/media/common/saa7146/saa7146_fops.c        |   2 +-
 drivers/media/dvb-core/dmxdev.c                    |  18 +-
 drivers/media/dvb-frontends/dib8000.c              |   4 +-
 drivers/media/pci/b2c2/flexcop-pci.c               |   3 +
 drivers/media/pci/saa7146/hexium_gemini.c          |   7 +-
 drivers/media/pci/saa7146/hexium_orion.c           |   8 +-
 drivers/media/pci/saa7146/mxb.c                    |   8 +-
 .../media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c |   2 +-
 drivers/media/rc/igorplugusb.c                     |   4 +-
 drivers/media/rc/mceusb.c                          |   8 +-
 drivers/media/rc/redrat3.c                         |  22 +-
 drivers/media/tuners/msi001.c                      |   7 +
 drivers/media/tuners/si2157.c                      |   2 +-
 drivers/media/usb/b2c2/flexcop-usb.c               |  10 +-
 drivers/media/usb/b2c2/flexcop-usb.h               |  12 +-
 drivers/media/usb/cpia2/cpia2_usb.c                |   4 +-
 drivers/media/usb/dvb-usb/dib0700_core.c           |   2 -
 drivers/media/usb/dvb-usb/dw2102.c                 | 338 +++++++++++++--------
 drivers/media/usb/dvb-usb/m920x.c                  |  12 +-
 drivers/media/usb/em28xx/em28xx-cards.c            |  18 +-
 drivers/media/usb/em28xx/em28xx-core.c             |   4 +-
 drivers/media/usb/pvrusb2/pvrusb2-hdw.c            |   8 +-
 drivers/media/usb/s2255/s2255drv.c                 |   4 +-
 drivers/media/usb/stk1160/stk1160-core.c           |   4 +-
 drivers/media/usb/uvc/uvc_video.c                  |   4 +
 drivers/media/usb/uvc/uvcvideo.h                   |   2 +-
 drivers/mfd/intel-lpss-acpi.c                      |   7 +-
 drivers/misc/lattice-ecp3-config.c                 |  12 +-
 drivers/mmc/core/sdio.c                            |   4 +-
 drivers/net/bonding/bond_main.c                    |   6 +-
 drivers/net/can/softing/softing_cs.c               |   2 +-
 drivers/net/can/softing/softing_fw.c               |  11 +-
 drivers/net/can/usb/gs_usb.c                       |   5 +-
 drivers/net/can/xilinx_can.c                       |   7 +-
 drivers/net/ethernet/broadcom/genet/bcmgenet.c     |  10 +-
 drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c  |   3 +-
 drivers/net/ethernet/freescale/fman/mac.c          |  21 +-
 drivers/net/ethernet/freescale/gianfar.c           |  38 ++-
 drivers/net/ethernet/freescale/xgmac_mdio.c        |   3 +-
 drivers/net/ethernet/i825xx/sni_82596.c            |   3 +-
 drivers/net/ethernet/mellanox/mlxsw/pci.c          |   1 +
 drivers/net/ethernet/xilinx/xilinx_axienet_main.c  |  14 +-
 drivers/net/phy/marvell.c                          |   6 +
 drivers/net/phy/mdio_bus.c                         |   2 +-
 drivers/net/ppp/ppp_generic.c                      |   7 +-
 drivers/net/usb/mcs7830.c                          |  12 +-
 drivers/net/wireless/ath/ar5523/ar5523.c           |   4 +
 drivers/net/wireless/ath/ath10k/htt_tx.c           |   3 +
 drivers/net/wireless/ath/ath10k/txrx.c             |   2 -
 drivers/net/wireless/ath/ath9k/hif_usb.c           |   7 +
 drivers/net/wireless/ath/wcn36xx/smd.c             |   4 +-
 drivers/net/wireless/intel/iwlwifi/iwl-drv.c       |  17 +-
 drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c  |  17 ++
 drivers/net/wireless/intel/iwlwifi/mvm/scan.c      |   2 +-
 drivers/net/wireless/marvell/mwifiex/usb.c         |   3 +-
 .../net/wireless/realtek/rtlwifi/rtl8192cu/hw.c    |   1 +
 drivers/parisc/pdc_stable.c                        |   4 +-
 drivers/pci/quirks.c                               |   3 +
 drivers/pcmcia/cs.c                                |   8 +-
 drivers/pcmcia/rsrc_nonstatic.c                    |   6 +
 drivers/power/supply/bq25890_charger.c             |   4 +-
 drivers/rtc/rtc-cmos.c                             |   3 +
 drivers/scsi/sr.c                                  |   2 +-
 drivers/scsi/sr_vendor.c                           |   4 +-
 drivers/scsi/ufs/tc-dwc-g210-pci.c                 |   1 -
 drivers/scsi/ufs/ufshcd-pltfrm.c                   |   2 -
 drivers/scsi/ufs/ufshcd.c                          |   7 +
 drivers/spi/spi-meson-spifc.c                      |   1 +
 drivers/staging/wlan-ng/hfa384x_usb.c              |  22 +-
 drivers/tty/serial/amba-pl010.c                    |   3 -
 drivers/tty/serial/amba-pl011.c                    |  27 +-
 drivers/tty/serial/atmel_serial.c                  |  14 +
 drivers/tty/serial/serial_core.c                   |   7 +-
 drivers/uio/uio_dmem_genirq.c                      |   6 +-
 drivers/usb/core/hcd.c                             |   9 +-
 drivers/usb/core/hub.c                             |   7 +-
 drivers/usb/gadget/function/f_fs.c                 |   4 +-
 drivers/usb/host/uhci-platform.c                   |   3 +-
 drivers/usb/misc/ftdi-elan.c                       |   1 +
 drivers/w1/slaves/w1_ds28e04.c                     |  26 +-
 fs/btrfs/backref.c                                 |  21 +-
 fs/dlm/lock.c                                      |   9 +
 fs/ext4/ioctl.c                                    |   2 -
 fs/ext4/mballoc.c                                  |   8 +
 fs/ext4/migrate.c                                  |  23 +-
 fs/ext4/super.c                                    |  12 +-
 fs/fuse/acl.c                                      |   6 +
 fs/fuse/dir.c                                      |  40 ++-
 fs/fuse/file.c                                     |  27 +-
 fs/fuse/fuse_i.h                                   |  13 +
 fs/fuse/inode.c                                    |   2 +-
 fs/fuse/xattr.c                                    |   9 +
 fs/jffs2/file.c                                    |  40 ++-
 fs/nfs/nfs4client.c                                |  82 ++---
 fs/orangefs/orangefs-bufmap.c                      |   7 +-
 fs/ubifs/super.c                                   |   1 -
 include/acpi/actypes.h                             |  10 +-
 include/net/sch_generic.h                          |   5 +
 kernel/sched/cputime.c                             |   4 +-
 kernel/sched/rt.c                                  |  23 +-
 mm/shmem.c                                         |  37 ++-
 net/bluetooth/cmtp/core.c                          |   4 +-
 net/bluetooth/hci_core.c                           |   1 +
 net/bluetooth/hci_event.c                          |   8 +-
 net/bluetooth/sco.c                                |  34 ++-
 net/bridge/br_netfilter_hooks.c                    |   7 +-
 net/core/filter.c                                  |   6 +-
 net/core/net_namespace.c                           |   4 +-
 net/mac80211/rx.c                                  |   2 +-
 net/nfc/llcp_sock.c                                |   5 +
 net/sched/sch_generic.c                            |   1 +
 net/unix/garbage.c                                 |  14 +-
 net/unix/scm.c                                     |   6 +-
 scripts/dtc/dtx_diff                               |   8 +-
 sound/core/jack.c                                  |   3 +
 sound/core/oss/pcm_oss.c                           |   2 +-
 sound/core/pcm.c                                   |   6 +-
 sound/core/seq/seq_queue.c                         |  14 +-
 sound/pci/hda/hda_codec.c                          |   3 +
 sound/soc/mediatek/mt8173/mt8173-max98090.c        |   3 +
 sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c   |   2 +
 sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c   |   2 +
 sound/soc/mediatek/mt8173/mt8173-rt5650.c          |   2 +
 sound/soc/samsung/idma.c                           |   2 +
 194 files changed, 1374 insertions(+), 707 deletions(-)
author maintainer
#1 lore raw

PATCH 1/186 Bluetooth: bfusb: fix division by zero in send path

From: Johan Hovold <[email protected]>

commit b5e6fa7a12572c82f1e7f2f51fbb02a322291291 upstream.

Add the missing bulk-out endpoint sanity check to probe() to avoid division by zero in bfusb_send_frame() in case a malicious device has broken descriptors (or when doing descriptor fuzz testing).

Note that USB core will reject URBs submitted for endpoints with zero wMaxPacketSize but that drivers doing packet-size calculations still need to handle this (cf. commit 2548288b4fb0 ("USB: Fix: Don't skip endpoint descriptors with maxpacket=0")).

---
 drivers/bluetooth/bfusb.c |    3 +++
 1 file changed, 3 insertions(+)
drivers/bluetooth/bfusb.c +3 -0
@@ -644,6 +644,9 @@ static int bfusb_probe(struct usb_interf
 	data->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
 	data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
 
+	if (!data->bulk_pkt_size)
+		goto done;
+
 	rwlock_init(&data->lock);
 
 	data->reassembly = NULL;
author maintainer
#2 lore raw

PATCH 2/186 USB: core: Fix bug in resuming hubs handling of wakeup requests

In reply to Greg Kroah-Hartman

From: Alan Stern <[email protected]>

commit 0f663729bb4afc92a9986b66131ebd5b8a9254d1 upstream.

Bugzilla #213839 reports a 7-port hub that doesn't work properly when devices are plugged into some of the ports; the kernel goes into an unending disconnect/reinitialize loop as shown in the bug report.

This "7-port hub" comprises two four-port hubs with one plugged into the other; the failures occur when a device is plugged into one of the downstream hub's ports. (These hubs have other problems too. For example, they bill themselves as USB-2.0 compliant but they only run at full speed.)

It turns out that the failures are caused by bugs in both the kernel and the hub. The hub's bug is that it reports a different bmAttributes value in its configuration descriptor following a remote wakeup (0xe0 before, 0xc0 after -- the wakeup-support bit has changed).

The kernel's bug is inside the hub driver's resume handler. When hub_activate() sees that one of the hub's downstream ports got a wakeup request from a child device, it notes this fact by setting the corresponding bit in the hub->change_bits variable. But this variable is meant for connection changes, not wakeup events; setting it causes the driver to believe the downstream port has been disconnected and then connected again (in addition to having received a wakeup request).

Because of this, the hub driver then tries to check whether the device currently plugged into the downstream port is the same as the device that had been attached there before. Normally this check succeeds and wakeup handling continues with no harm done (which is why the bug remained undetected until now). But with these dodgy hubs, the check fails because the config descriptor has changed. This causes the hub driver to reinitialize the child device, leading to the disconnect/reinitialize loop described in the bug report.

The proper way to note reception of a downstream wakeup request is to set a bit in the hub->event_bits variable instead of hub->change_bits. That way the hub driver will realize that something has happened to the port but will not think the port and child device have been disconnected. This patch makes that change.

---
 drivers/usb/core/hub.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/usb/core/hub.c +1 -1
@@ -1192,7 +1192,7 @@ static void hub_activate(struct usb_hub
 			 */
 			if (portchange || (hub_is_superspeed(hub->hdev) &&
 						port_resumed))
-				set_bit(port1, hub->change_bits);
+				set_bit(port1, hub->event_bits);
 
 		} else if (udev->persist_enabled) {
 #ifdef CONFIG_PM
author maintainer
#3 lore raw

PATCH 3/186 USB: Fix "slab-out-of-bounds Write" bug in usb_hcd_poll_rh_status

In reply to Greg Kroah-Hartman

From: Alan Stern <[email protected]>

commit 1d7d4c07932e04355d6e6528d44a2f2c9e354346 upstream.

When the USB core code for getting root-hub status reports was originally written, it was assumed that the hub driver would be its only caller. But this isn't true now; user programs can use usbfs to communicate with root hubs and get status reports. When they do this, they may use a transfer_buffer that is smaller than the data returned by the HCD, which will lead to a buffer overflow error when usb_hcd_poll_rh_status() tries to store the status data. This was discovered by syzbot:

BUG: KASAN: slab-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline]
BUG: KASAN: slab-out-of-bounds in usb_hcd_poll_rh_status+0x5f4/0x780 drivers/usb/core/hcd.c:776
Write of size 2 at addr ffff88801da403c0 by task syz-executor133/4062

This patch fixes the bug by reducing the amount of status data if it won't fit in the transfer_buffer. If some data gets discarded then the URB's completion status is set to -EOVERFLOW rather than 0, to let the user know what happened.

---
 drivers/usb/core/hcd.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
drivers/usb/core/hcd.c +8 -1
@@ -761,6 +761,7 @@ void usb_hcd_poll_rh_status(struct usb_h
 {
 	struct urb	*urb;
 	int		length;
+	int		status;
 	unsigned long	flags;
 	char		buffer[6];	/* Any root hubs with > 31 ports? */
 
@@ -778,11 +779,17 @@ void usb_hcd_poll_rh_status(struct usb_h
 		if (urb) {
 			clear_bit(HCD_FLAG_POLL_PENDING, &hcd->flags);
 			hcd->status_urb = NULL;
+			if (urb->transfer_buffer_length >= length) {
+				status = 0;
+			} else {
+				status = -EOVERFLOW;
+				length = urb->transfer_buffer_length;
+			}
 			urb->actual_length = length;
 			memcpy(urb->transfer_buffer, buffer, length);
 
 			usb_hcd_unlink_urb_from_ep(hcd, urb);
-			usb_hcd_giveback_urb(hcd, urb, 0);
+			usb_hcd_giveback_urb(hcd, urb, status);
 		} else {
 			length = 0;
 			set_bit(HCD_FLAG_POLL_PENDING, &hcd->flags);
author maintainer
#4 lore raw

PATCH 4/186 mfd: intel-lpss: Fix too early PM enablement in the ACPI ->probe()

In reply to Greg Kroah-Hartman

From: Andy Shevchenko <[email protected]>

commit c9e143084d1a602f829115612e1ec79df3727c8b upstream.

The runtime PM callback may be called as soon as the runtime PM facility is enabled and activated. It means that ->suspend() may be called before we finish probing the device in the ACPI case. Hence, NULL pointer dereference:

intel-lpss INT34BA:00: IRQ index 0 not found

  BUG: kernel NULL pointer dereference, address: 0000000000000030
  ...
  Workqueue: pm pm_runtime_work
  RIP: 0010:intel_lpss_suspend+0xb/0x40 [intel_lpss]

To fix this, first try to register the device and only after that enable runtime PM facility.

---
 drivers/mfd/intel-lpss-acpi.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
drivers/mfd/intel-lpss-acpi.c +6 -1
@@ -80,6 +80,7 @@ static int intel_lpss_acpi_probe(struct
 {
 	struct intel_lpss_platform_info *info;
 	const struct acpi_device_id *id;
+	int ret;
 
 	id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
 	if (!id)
@@ -93,10 +94,14 @@ static int intel_lpss_acpi_probe(struct
 	info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	info->irq = platform_get_irq(pdev, 0);
 
+	ret = intel_lpss_probe(&pdev->dev, info);
+	if (ret)
+		return ret;
+
 	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
-	return intel_lpss_probe(&pdev->dev, info);
+	return 0;
 }
 
 static int intel_lpss_acpi_remove(struct platform_device *pdev)
author maintainer
#5 lore raw

PATCH 5/186 can: gs_usb: fix use of uninitialized variable, detach device on reception of invalid USB data

In reply to Greg Kroah-Hartman

From: Marc Kleine-Budde <[email protected]>

commit 4a8737ff068724f509d583fef404d349adba80d6 upstream.

The received data contains the channel the received data is associated with. If the channel number is bigger than the actual number of channels assume broken or malicious USB device and shut it down.

This fixes the error found by clang:

| drivers/net/can/usb/gs_usb.c:386:6: error: variable 'dev' is used
|                                     uninitialized whenever 'if' condition is true
|         if (hf->channel >= GS_MAX_INTF)
|             ^~~~~~~~~~~~~~~~~~~~~~~~~~
| drivers/net/can/usb/gs_usb.c:474:10: note: uninitialized use occurs here
|                           hf, dev->gs_hf_size, gs_usb_receive_bulk_callback,
|                               ^~~
Fixes d08e973a77d1 ("can: gs_usb: Added support for the GS_USB CAN devices")
---
 drivers/net/can/usb/gs_usb.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/net/can/usb/gs_usb.c +2 -1
@@ -328,7 +328,7 @@ static void gs_usb_receive_bulk_callback
 
 	/* device reports out of range channel id */
 	if (hf->channel >= GS_MAX_INTF)
-		goto resubmit_urb;
+		goto device_detach;
 
 	dev = usbcan->canch[hf->channel];
 
@@ -413,6 +413,7 @@ static void gs_usb_receive_bulk_callback
 
 	/* USB failure take down all interfaces */
 	if (rc == -ENODEV) {
+ device_detach:
 		for (rc = 0; rc < GS_MAX_INTF; rc++) {
 			if (usbcan->canch[rc])
 				netif_device_detach(usbcan->canch[rc]->netdev);
author maintainer
#6 lore raw

PATCH 6/186 can: gs_usb: gs_can_start_xmit(): zero-initialize hf->{flags,reserved}

In reply to Greg Kroah-Hartman

From: Brian Silverman <[email protected]>

commit 89d58aebe14a365c25ba6645414afdbf4e41cea4 upstream.

No information is deliberately sent in hf->flags in host -> device communications, but the open-source candleLight firmware echoes it back, which can result in the GS_CAN_FLAG_OVERFLOW flag being set and generating spurious ERRORFRAMEs.

While there also initialize the reserved member with 0.

Fixes d08e973a77d1 ("can: gs_usb: Added support for the GS_USB CAN devices")
[mkl: initialize the reserved member, too]
---
 drivers/net/can/usb/gs_usb.c |    2 ++
 1 file changed, 2 insertions(+)
drivers/net/can/usb/gs_usb.c +2 -0
@@ -515,6 +515,8 @@ static netdev_tx_t gs_can_start_xmit(str
 
 	hf->echo_id = idx;
 	hf->channel = dev->channel;
+	hf->flags = 0;
+	hf->reserved = 0;
 
 	cf = (struct can_frame *)skb->data;
 
author maintainer
#7 lore raw

PATCH 7/186 random: fix data race on crng_node_pool

In reply to Greg Kroah-Hartman

From: Eric Biggers <[email protected]>

commit 5d73d1e320c3fd94ea15ba5f79301da9a8bcc7de upstream.

extract_crng() and crng_backtrack_protect() load crng_node_pool with a plain load, which causes undefined behavior if do_numa_crng_init() modifies it concurrently.

Fix this by using READ_ONCE(). Note: as per the previous discussion
https://lore.kernel.org/lkml/[email protected]/T/#u,
READ_ONCE() is believed to be sufficient here, and it was requested that it be used here instead of smp_load_acquire().

Also change do_numa_crng_init() to set crng_node_pool using cmpxchg_release() instead of mb() + cmpxchg(), as the former is sufficient here but is more lightweight.

Fixes 1e7f583af67b ("random: make /dev/urandom scalable for silly userspace programs")
---
 drivers/char/random.c |   42 ++++++++++++++++++++++--------------------
 1 file changed, 22 insertions(+), 20 deletions(-)
drivers/char/random.c +22 -20
@@ -813,8 +813,8 @@ static void do_numa_crng_init(struct wor
 		crng_initialize(crng);
 		pool[i] = crng;
 	}
-	mb();
-	if (cmpxchg(&crng_node_pool, NULL, pool)) {
+	/* pairs with READ_ONCE() in select_crng() */
+	if (cmpxchg_release(&crng_node_pool, NULL, pool) != NULL) {
 		for_each_node(i)
 			kfree(pool[i]);
 		kfree(pool);
@@ -827,8 +827,26 @@ static void numa_crng_init(void)
 {
 	schedule_work(&numa_crng_init_work);
 }
+
+static struct crng_state *select_crng(void)
+{
+	struct crng_state **pool;
+	int nid = numa_node_id();
+
+	/* pairs with cmpxchg_release() in do_numa_crng_init() */
+	pool = READ_ONCE(crng_node_pool);
+	if (pool && pool[nid])
+		return pool[nid];
+
+	return &primary_crng;
+}
 #else
 static void numa_crng_init(void) {}
+
+static struct crng_state *select_crng(void)
+{
+	return &primary_crng;
+}
 #endif
 
 /*
@@ -977,15 +995,7 @@ static void _extract_crng(struct crng_st
 
 static void extract_crng(__u8 out[CHACHA20_BLOCK_SIZE])
 {
-	struct crng_state *crng = NULL;
-
-#ifdef CONFIG_NUMA
-	if (crng_node_pool)
-		crng = crng_node_pool[numa_node_id()];
-	if (crng == NULL)
-#endif
-		crng = &primary_crng;
-	_extract_crng(crng, out);
+	_extract_crng(select_crng(), out);
 }
 
 /*
@@ -1014,15 +1024,7 @@ static void _crng_backtrack_protect(stru
 
 static void crng_backtrack_protect(__u8 tmp[CHACHA20_BLOCK_SIZE], int used)
 {
-	struct crng_state *crng = NULL;
-
-#ifdef CONFIG_NUMA
-	if (crng_node_pool)
-		crng = crng_node_pool[numa_node_id()];
-	if (crng == NULL)
-#endif
-		crng = &primary_crng;
-	_crng_backtrack_protect(crng, tmp, used);
+	_crng_backtrack_protect(select_crng(), tmp, used);
 }
 
 static ssize_t extract_crng_user(void __user *buf, size_t nbytes)
author maintainer
#8 lore raw

PATCH 8/186 random: fix data race on crng init time

In reply to Greg Kroah-Hartman

From: Eric Biggers <[email protected]>

commit 009ba8568be497c640cab7571f7bfd18345d7b24 upstream.

_extract_crng() does plain loads of crng->init_time and crng_global_init_time, which causes undefined behavior if crng_reseed() and RNDRESEEDCRNG modify these corrently.

Use READ_ONCE() and WRITE_ONCE() to make the behavior defined.

Don't fix the race on crng->init_time by protecting it with crng->lock, since it's not a problem for duplicate reseedings to occur. I.e., the lockless access with READ_ONCE() is fine.

Fixes d848e5f8e1eb ("random: add new ioctl RNDRESEEDCRNG")
Fixes e192be9d9a30 ("random: replace non-blocking pool with a Chacha20-based CRNG")
---
 drivers/char/random.c |   17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)
drivers/char/random.c +10 -7
@@ -951,7 +951,7 @@ static void crng_reseed(struct crng_stat
 		crng->state[i+4] ^= buf.key[i] ^ rv;
 	}
 	memzero_explicit(&buf, sizeof(buf));
-	crng->init_time = jiffies;
+	WRITE_ONCE(crng->init_time, jiffies);
 	spin_unlock_irqrestore(&crng->lock, flags);
 	if (crng == &primary_crng && crng_init < 2) {
 		invalidate_batched_entropy();
@@ -978,12 +978,15 @@ static void crng_reseed(struct crng_stat
 static void _extract_crng(struct crng_state *crng,
 			  __u8 out[CHACHA20_BLOCK_SIZE])
 {
-	unsigned long v, flags;
+	unsigned long v, flags, init_time;
 
-	if (crng_ready() &&
-	    (time_after(crng_global_init_time, crng->init_time) ||
-	     time_after(jiffies, crng->init_time + CRNG_RESEED_INTERVAL)))
-		crng_reseed(crng, crng == &primary_crng ? &input_pool : NULL);
+	if (crng_ready()) {
+		init_time = READ_ONCE(crng->init_time);
+		if (time_after(READ_ONCE(crng_global_init_time), init_time) ||
+		    time_after(jiffies, init_time + CRNG_RESEED_INTERVAL))
+			crng_reseed(crng, crng == &primary_crng ?
+				    &input_pool : NULL);
+	}
 	spin_lock_irqsave(&crng->lock, flags);
 	if (arch_get_random_long(&v))
 		crng->state[14] ^= v;
@@ -1987,7 +1990,7 @@ static long random_ioctl(struct file *f,
 		if (crng_init < 2)
 			return -ENODATA;
 		crng_reseed(&primary_crng, &input_pool);
-		crng_global_init_time = jiffies - 1;
+		WRITE_ONCE(crng_global_init_time, jiffies - 1);
 		return 0;
 	default:
 		return -EINVAL;
author maintainer
#9 lore raw

PATCH 9/186 staging: wlan-ng: Avoid bitwise vs logical OR warning in hfa384x_usb_throttlefn()

In reply to Greg Kroah-Hartman

From: Nathan Chancellor <[email protected]>

commit 502408a61f4b7eb4713f44bd77f4a48e6cb1b59a upstream.

A new warning in clang points out a place in this file where a bitwise OR is being used with boolean expressions:

In file included from drivers/staging/wlan-ng/prism2usb.c:2:
drivers/staging/wlan-ng/hfa384x_usb.c:3787:7: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]

            ((test_and_clear_bit(THROTTLE_RX, &hw->usb_flags) &&
            ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

drivers/staging/wlan-ng/hfa384x_usb.c:3787:7: note: cast one or both operands to int to silence this warning 1 warning generated.

The comment explains that short circuiting here is undesirable, as the calls to test_and_{clear,set}_bit() need to happen for both sides of the expression.

Clang's suggestion would work to silence the warning but the readability of the expression would suffer even more. To clean up the warning and make the block more readable, use a variable for each side of the bitwise expression.

---
 drivers/staging/wlan-ng/hfa384x_usb.c |   22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)
drivers/staging/wlan-ng/hfa384x_usb.c +11 -11
@@ -3904,18 +3904,18 @@ static void hfa384x_usb_throttlefn(unsig
 
 	spin_lock_irqsave(&hw->ctlxq.lock, flags);
 
-	/*
-	 * We need to check BOTH the RX and the TX throttle controls,
-	 * so we use the bitwise OR instead of the logical OR.
-	 */
 	pr_debug("flags=0x%lx\n", hw->usb_flags);
-	if (!hw->wlandev->hwremoved &&
-	    ((test_and_clear_bit(THROTTLE_RX, &hw->usb_flags) &&
-	      !test_and_set_bit(WORK_RX_RESUME, &hw->usb_flags)) |
-	     (test_and_clear_bit(THROTTLE_TX, &hw->usb_flags) &&
-	      !test_and_set_bit(WORK_TX_RESUME, &hw->usb_flags))
-	    )) {
-		schedule_work(&hw->usb_work);
+	if (!hw->wlandev->hwremoved) {
+		bool rx_throttle = test_and_clear_bit(THROTTLE_RX, &hw->usb_flags) &&
+				   !test_and_set_bit(WORK_RX_RESUME, &hw->usb_flags);
+		bool tx_throttle = test_and_clear_bit(THROTTLE_TX, &hw->usb_flags) &&
+				   !test_and_set_bit(WORK_TX_RESUME, &hw->usb_flags);
+		/*
+		 * We need to check BOTH the RX and the TX throttle controls,
+		 * so we use the bitwise OR instead of the logical OR.
+		 */
+		if (rx_throttle | tx_throttle)
+			schedule_work(&hw->usb_work);
 	}
 
 	spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
author maintainer
#10 lore raw

PATCH 10/186 drm/i915: Avoid bitwise vs logical OR warning in snb_wm_latency_quirk()

In reply to Greg Kroah-Hartman

From: Nathan Chancellor <[email protected]>

commit 2e70570656adfe1c5d9a29940faa348d5f132199 upstream.

A new warning in clang points out a place in this file where a bitwise OR is being used with boolean types:

drivers/gpu/drm/i915/intel_pm.c:3066:12: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]

        changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) |
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This construct is intentional, as it allows every one of the calls to ilk_increase_wm_latency() to occur (instead of short circuiting with logical OR) while still caring about the result of each call.

To make this clearer to the compiler, use the '|=' operator to assign the result of each ilk_increase_wm_latency() call to changed, which keeps the meaning of the code the same but makes it obvious that every one of these calls is expected to happen.

---
 drivers/gpu/drm/i915/intel_pm.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
drivers/gpu/drm/i915/intel_pm.c +3 -3
@@ -2985,9 +2985,9 @@ static void snb_wm_latency_quirk(struct
 	 * The BIOS provided WM memory latency values are often
 	 * inadequate for high resolution displays. Adjust them.
 	 */
-	changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) |
-		ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12) |
-		ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12);
+	changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12);
+	changed |= ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12);
+	changed |= ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12);
 
 	if (!changed)
 		return;
author maintainer
#11 lore raw

PATCH 11/186 orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc()

In reply to Greg Kroah-Hartman

From: Christophe JAILLET <[email protected]>

commit 40a74870b2d1d3d44e13b3b73c6571dd34f5614d upstream.

'buffer_index_array' really looks like a bitmap. So it should be allocated as such.
When kzalloc is called, a number of bytes is expected, but a number of longs is passed instead.

In get(), if not enough memory is allocated, un-allocated memory may be read or written.

So use bitmap_zalloc() to safely allocate the correct memory size and avoid un-expected behavior.

While at it, change the corresponding kfree() into bitmap_free() to keep the semantic.

Fixes ea2c9c9f6574 ("orangefs: bufmap rewrite")
---
 fs/orangefs/orangefs-bufmap.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
fs/orangefs/orangefs-bufmap.c +3 -4
@@ -179,7 +179,7 @@ orangefs_bufmap_free(struct orangefs_buf
 {
 	kfree(bufmap->page_array);
 	kfree(bufmap->desc_array);
-	kfree(bufmap->buffer_index_array);
+	bitmap_free(bufmap->buffer_index_array);
 	kfree(bufmap);
 }
 
@@ -243,8 +243,7 @@ orangefs_bufmap_alloc(struct ORANGEFS_de
 	bufmap->desc_size = user_desc->size;
 	bufmap->desc_shift = ilog2(bufmap->desc_size);
 
-	bufmap->buffer_index_array =
-		kzalloc(DIV_ROUND_UP(bufmap->desc_count, BITS_PER_LONG), GFP_KERNEL);
+	bufmap->buffer_index_array = bitmap_zalloc(bufmap->desc_count, GFP_KERNEL);
 	if (!bufmap->buffer_index_array)
 		goto out_free_bufmap;
 
@@ -267,7 +266,7 @@ orangefs_bufmap_alloc(struct ORANGEFS_de
 out_free_desc_array:
 	kfree(bufmap->desc_array);
 out_free_index_array:
-	kfree(bufmap->buffer_index_array);
+	bitmap_free(bufmap->buffer_index_array);
 out_free_bufmap:
 	kfree(bufmap);
 out:
author maintainer
#12 lore raw

PATCH 12/186 media: uvcvideo: fix division by zero at stream start

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit 8aa637bf6d70d2fb2ad4d708d8b9dd02b1c095df upstream.

Add the missing bulk-endpoint max-packet sanity check to uvc_video_start_transfer() to avoid division by zero in uvc_alloc_urb_buffers() in case a malicious device has broken descriptors (or when doing descriptor fuzz testing).

Note that USB core will reject URBs submitted for endpoints with zero wMaxPacketSize but that drivers doing packet-size calculations still need to handle this (cf. commit 2548288b4fb0 ("USB: Fix: Don't skip endpoint descriptors with maxpacket=0")).

Fixes c0efd232929c ("V4L/DVB (8145a): USB Video Class driver")
Cc [email protected] # 2.6.26
---
 drivers/media/usb/uvc/uvc_video.c |    4 ++++
 1 file changed, 4 insertions(+)
drivers/media/usb/uvc/uvc_video.c +4 -0
@@ -1711,6 +1711,10 @@ static int uvc_init_video(struct uvc_str
 		if (ep == NULL)
 			return -EIO;
 
+		/* Reject broken descriptors. */
+		if (usb_endpoint_maxp(&ep->desc) == 0)
+			return -EIO;
+
 		ret = uvc_init_video_bulk(stream, ep, gfp_flags);
 	}
 
author maintainer
#13 lore raw

PATCH 13/186 rtlwifi: rtl8192cu: Fix WARNING when calling local_irq_restore() with interrupts enabled

In reply to Greg Kroah-Hartman

From: Larry Finger <[email protected]>

commit 8b144dedb928e4e2f433a328d58f44c3c098d63e upstream.

Syzbot reports the following WARNING:

[200~raw_local_irq_restore() called with IRQs enabled

WARNING: CPU: 1 PID: 1206 at kernel/locking/irqflag-debug.c:10
   warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10

Hardware initialization for the rtl8188cu can run for as long as 350 ms, and the routine may be called with interrupts disabled. To avoid locking the machine for this long, the current routine saves the interrupt flags and enables local interrupts. The problem is that it restores the flags at the end without disabling local interrupts first.

This patch fixes commit a53268be0cb9 ("rtlwifi: rtl8192cu: Fix too long disable of IRQs").

Reported-by [email protected]
Fixes a53268be0cb9 ("rtlwifi: rtl8192cu: Fix too long disable of IRQs")
---
 drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c |    1 +
 1 file changed, 1 insertion(+)
drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c +1 -0
@@ -1020,6 +1020,7 @@ int rtl92cu_hw_init(struct ieee80211_hw
 	_InitPABias(hw);
 	rtl92c_dm_init(hw);
 exit:
+	local_irq_disable();
 	local_irq_restore(flags);
 	return err;
 }
author maintainer
#14 lore raw

PATCH 14/186 Bluetooth: schedule SCO timeouts with delayed_work

In reply to Greg Kroah-Hartman

From: Desmond Cheong Zhi Xi <[email protected]>

commit ba316be1b6a00db7126ed9a39f9bee434a508043 upstream.

struct sock.sk_timer should be used as a sock cleanup timer. However, SCO uses it to implement sock timeouts.

This causes issues because struct sock.sk_timer's callback is run in an IRQ context, and the timer callback function sco_sock_timeout takes a spin lock on the socket. However, other functions such as sco_conn_del and sco_conn_ready take the spin lock with interrupts enabled.

This inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} lock usage could lead to deadlocks as reported by Syzbot [1]:

       CPU0
       ----
  lock(slock-AF_BLUETOOTH-BTPROTO_SCO);
  <Interrupt>
    lock(slock-AF_BLUETOOTH-BTPROTO_SCO);

To fix this, we use delayed work to implement SCO sock timouts instead. This allows us to avoid taking the spin lock on the socket in an IRQ context, and corrects the misuse of struct sock.sk_timer.

As a note, cancel_delayed_work is used instead of cancel_delayed_work_sync in sco_sock_set_timer and sco_sock_clear_timer to avoid a deadlock. In the future, the call to bh_lock_sock inside sco_sock_timeout should be changed to lock_sock to synchronize with other functions using lock_sock. However, since sco_sock_set_timer and sco_sock_clear_timer are sometimes called under the locked socket (in sco_connect and __sco_sock_close), cancel_delayed_work_sync might cause them to sleep until an sco_sock_timeout that has started finishes running. But sco_sock_timeout would also sleep until it can grab the lock_sock.

Using cancel_delayed_work is fine because sco_sock_timeout does not change from run to run, hence there is no functional difference between:
1. waiting for a timeout to finish running before scheduling another timeout
2. scheduling another timeout while a timeout is running.

---
 net/bluetooth/sco.c |   35 +++++++++++++++++++++++++++++------
 1 file changed, 29 insertions(+), 6 deletions(-)
net/bluetooth/sco.c +29 -6
@@ -48,6 +48,8 @@ struct sco_conn {
 	spinlock_t	lock;
 	struct sock	*sk;
 
+	struct delayed_work	timeout_work;
+
 	unsigned int    mtu;
 };
 
@@ -73,9 +75,20 @@ struct sco_pinfo {
 #define SCO_CONN_TIMEOUT	(HZ * 40)
 #define SCO_DISCONN_TIMEOUT	(HZ * 2)
 
-static void sco_sock_timeout(unsigned long arg)
+static void sco_sock_timeout(struct work_struct *work)
 {
-	struct sock *sk = (struct sock *)arg;
+	struct sco_conn *conn = container_of(work, struct sco_conn,
+					     timeout_work.work);
+	struct sock *sk;
+
+	sco_conn_lock(conn);
+	sk = conn->sk;
+	if (sk)
+		sock_hold(sk);
+	sco_conn_unlock(conn);
+
+	if (!sk)
+		return;
 
 	BT_DBG("sock %p state %d", sk, sk->sk_state);
 
@@ -89,14 +102,21 @@ static void sco_sock_timeout(unsigned lo
 
 static void sco_sock_set_timer(struct sock *sk, long timeout)
 {
+	if (!sco_pi(sk)->conn)
+		return;
+
 	BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout);
-	sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout);
+	cancel_delayed_work(&sco_pi(sk)->conn->timeout_work);
+	schedule_delayed_work(&sco_pi(sk)->conn->timeout_work, timeout);
 }
 
 static void sco_sock_clear_timer(struct sock *sk)
 {
+	if (!sco_pi(sk)->conn)
+		return;
+
 	BT_DBG("sock %p state %d", sk, sk->sk_state);
-	sk_stop_timer(sk, &sk->sk_timer);
+	cancel_delayed_work(&sco_pi(sk)->conn->timeout_work);
 }
 
 /* ---- SCO connections ---- */
@@ -176,6 +196,9 @@ static void sco_conn_del(struct hci_conn
 		sco_chan_del(sk, err);
 		bh_unlock_sock(sk);
 		sock_put(sk);
+
+		/* Ensure no more work items will run before freeing conn. */
+		cancel_delayed_work_sync(&conn->timeout_work);
 	}
 
 	hcon->sco_data = NULL;
@@ -190,6 +213,8 @@ static void __sco_chan_add(struct sco_co
 	sco_pi(sk)->conn = conn;
 	conn->sk = sk;
 
+	INIT_DELAYED_WORK(&conn->timeout_work, sco_sock_timeout);
+
 	if (parent)
 		bt_accept_enqueue(parent, sk, true);
 }
@@ -466,8 +491,6 @@ static struct sock *sco_sock_alloc(struc
 
 	sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT;
 
-	setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk);
-
 	bt_sock_link(&sco_sk_list, sk);
 	return sk;
 }
author maintainer
#15 lore raw

PATCH 15/186 Bluetooth: fix init and cleanup of sco_conn.timeout_work

In reply to Greg Kroah-Hartman

From: Desmond Cheong Zhi Xi <[email protected]>

commit 49d8a5606428ca0962d09050a5af81461ff90fbb upstream.

Before freeing struct sco_conn, all delayed timeout work should be cancelled. Otherwise, sco_sock_timeout could potentially use the sco_conn after it has been freed.

Additionally, sco_conn.timeout_work should be initialized when the connection is allocated, not when the channel is added. This is because an sco_conn can create channels with multiple sockets over its lifetime, which happens if sockets are released but the connection isn't deleted.

Fixes ba316be1b6a0 ("Bluetooth: schedule SCO timeouts with delayed_work")
[OP: adjusted context for 4.14]
---
 net/bluetooth/sco.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)
net/bluetooth/sco.c +4 -5
@@ -133,6 +133,7 @@ static struct sco_conn *sco_conn_add(str
 		return NULL;
 
 	spin_lock_init(&conn->lock);
+	INIT_DELAYED_WORK(&conn->timeout_work, sco_sock_timeout);
 
 	hcon->sco_data = conn;
 	conn->hcon = hcon;
@@ -196,11 +197,11 @@ static void sco_conn_del(struct hci_conn
 		sco_chan_del(sk, err);
 		bh_unlock_sock(sk);
 		sock_put(sk);
-
-		/* Ensure no more work items will run before freeing conn. */
-		cancel_delayed_work_sync(&conn->timeout_work);
 	}
 
+	/* Ensure no more work items will run before freeing conn. */
+	cancel_delayed_work_sync(&conn->timeout_work);
+
 	hcon->sco_data = NULL;
 	kfree(conn);
 }
@@ -213,8 +214,6 @@ static void __sco_chan_add(struct sco_co
 	sco_pi(sk)->conn = conn;
 	conn->sk = sk;
 
-	INIT_DELAYED_WORK(&conn->timeout_work, sco_sock_timeout);
-
 	if (parent)
 		bt_accept_enqueue(parent, sk, true);
 }
author maintainer
#16 lore raw

PATCH 16/186 HID: uhid: Fix worker destroying device without any protection

In reply to Greg Kroah-Hartman

From: Jann Horn <[email protected]>

commit 4ea5763fb79ed89b3bdad455ebf3f33416a81624 upstream.

uhid has to run hid_add_device() from workqueue context while allowing parallel use of the userspace API (which is protected with ->devlock). But hid_add_device() can fail. Currently, that is handled by immediately destroying the associated HID device, without using ->devlock - but if there are concurrent requests from userspace, that's wrong and leads to NULL dereferences and/or memory corruption (via use-after-free).

Fix it by leaving the HID device as-is in the worker. We can clean it up later, either in the UHID_DESTROY command handler or in the ->release() handler.

Fixes 67f8ecc550b5 ("HID: uhid: fix timeout when probe races with IO")
---
 drivers/hid/uhid.c |   29 +++++++++++++++++++++++++----
 1 file changed, 25 insertions(+), 4 deletions(-)
drivers/hid/uhid.c +25 -4
@@ -32,11 +32,22 @@
 
 struct uhid_device {
 	struct mutex devlock;
+
+	/* This flag tracks whether the HID device is usable for commands from
+	 * userspace. The flag is already set before hid_add_device(), which
+	 * runs in workqueue context, to allow hid_add_device() to communicate
+	 * with userspace.
+	 * However, if hid_add_device() fails, the flag is cleared without
+	 * holding devlock.
+	 * We guarantee that if @running changes from true to false while you're
+	 * holding @devlock, it's still fine to access @hid.
+	 */
 	bool running;
 
 	__u8 *rd_data;
 	uint rd_size;
 
+	/* When this is NULL, userspace may use UHID_CREATE/UHID_CREATE2. */
 	struct hid_device *hid;
 	struct uhid_event input_buf;
 
@@ -67,9 +78,18 @@ static void uhid_device_add_worker(struc
 	if (ret) {
 		hid_err(uhid->hid, "Cannot register HID device: error %d\n", ret);
 
-		hid_destroy_device(uhid->hid);
-		uhid->hid = NULL;
+		/* We used to call hid_destroy_device() here, but that's really
+		 * messy to get right because we have to coordinate with
+		 * concurrent writes from userspace that might be in the middle
+		 * of using uhid->hid.
+		 * Just leave uhid->hid as-is for now, and clean it up when
+		 * userspace tries to close or reinitialize the uhid instance.
+		 *
+		 * However, we do have to clear the ->running flag and do a
+		 * wakeup to make sure userspace knows that the device is gone.
+		 */
 		uhid->running = false;
+		wake_up_interruptible(&uhid->report_wait);
 	}
 }
 
@@ -478,7 +498,7 @@ static int uhid_dev_create2(struct uhid_
 	void *rd_data;
 	int ret;
 
-	if (uhid->running)
+	if (uhid->hid)
 		return -EALREADY;
 
 	rd_size = ev->u.create2.rd_size;
@@ -559,7 +579,7 @@ static int uhid_dev_create(struct uhid_d
 
 static int uhid_dev_destroy(struct uhid_device *uhid)
 {
-	if (!uhid->running)
+	if (!uhid->hid)
 		return -EINVAL;
 
 	uhid->running = false;
@@ -568,6 +588,7 @@ static int uhid_dev_destroy(struct uhid_
 	cancel_work_sync(&uhid->worker);
 
 	hid_destroy_device(uhid->hid);
+	uhid->hid = NULL;
 	kfree(uhid->rd_data);
 
 	return 0;
author maintainer
#17 lore raw

PATCH 17/186 HID: wacom: Ignore the confidence flag when a touch is removed

In reply to Greg Kroah-Hartman

From: Jason Gerecke <[email protected]>

commit df03e9bd6d4806619b4cdc91a3d7695818a8e2b7 upstream.

AES hardware may internally re-classify a contact that it thought was intentional as a palm. Intentional contacts are reported as "down" with the confidence bit set. When this re-classification occurs, however, the state transitions to "up" with the confidence bit cleared. This kind of transition appears to be legal according to Microsoft docs, but we do not handle it correctly. Because the confidence bit is clear, we don't call wacom_wac_finger_slot and update userspace. This causes hung touches that confuse userspace and interfere with pen arbitration.

This commit adds a special case to ignore the confidence flag if a contact is reported as removed. This ensures we do not leave a hung touch if one of these re-classification events occured. Ideally we'd have some way to also let userspace know that the touch has been re-classified as a palm and needs to be canceled, but that's not possible right now :)

Fixes 7fb0413baa7f (HID: wacom: Use "Confidence" flag to prevent reporting invalid contacts)
---
 drivers/hid/wacom_wac.c |   29 ++++++++++++++++++++++++++---
 1 file changed, 26 insertions(+), 3 deletions(-)
drivers/hid/wacom_wac.c +26 -3
@@ -2424,6 +2424,24 @@ static void wacom_wac_finger_slot(struct
 	}
 }
 
+static bool wacom_wac_slot_is_active(struct input_dev *dev, int key)
+{
+	struct input_mt *mt = dev->mt;
+	struct input_mt_slot *s;
+
+	if (!mt)
+		return false;
+
+	for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {
+		if (s->key == key &&
+			input_mt_get_value(s, ABS_MT_TRACKING_ID) >= 0) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
 static void wacom_wac_finger_event(struct hid_device *hdev,
 		struct hid_field *field, struct hid_usage *usage, __s32 value)
 {
@@ -2466,9 +2484,14 @@ static void wacom_wac_finger_event(struc
 
 
 	if (usage->usage_index + 1 == field->report_count) {
-		if (equivalent_usage == wacom_wac->hid_data.last_slot_field &&
-		    wacom_wac->hid_data.confidence)
-			wacom_wac_finger_slot(wacom_wac, wacom_wac->touch_input);
+		if (equivalent_usage == wacom_wac->hid_data.last_slot_field) {
+			bool touch_removed = wacom_wac_slot_is_active(wacom_wac->touch_input,
+				wacom_wac->hid_data.id) && !wacom_wac->hid_data.tipswitch;
+
+			if (wacom_wac->hid_data.confidence || touch_removed) {
+				wacom_wac_finger_slot(wacom_wac, wacom_wac->touch_input);
+			}
+		}
 	}
 }
 
author maintainer
#18 lore raw

PATCH 18/186 HID: wacom: Avoid using stale array indicies to read contact count

In reply to Greg Kroah-Hartman

From: Jason Gerecke <[email protected]>

commit 20f3cf5f860f9f267a6a6e5642d3d0525edb1814 upstream.

If we ever see a touch report with contact count data we initialize several variables used to read the contact count in the pre-report phase. These variables are never reset if we process a report which doesn't contain a contact count, however. This can cause the pre- report function to trigger a read of arbitrary memory (e.g. NULL if we're lucky) and potentially crash the driver.

This commit restores resetting of the variables back to default "none" values that were used prior to the commit mentioned below.

Fixes 003f50ab673c (HID: wacom: Update last_slot_field during pre_report phase)
---
 drivers/hid/wacom_wac.c |    4 ++++
 1 file changed, 4 insertions(+)
drivers/hid/wacom_wac.c +4 -0
@@ -2505,6 +2505,10 @@ static void wacom_wac_finger_pre_report(
 
 	hid_data->confidence = true;
 
+	hid_data->cc_report = 0;
+	hid_data->cc_index = -1;
+	hid_data->cc_value_index = -1;
+
 	for (i = 0; i < report->maxfield; i++) {
 		struct hid_field *field = report->field[i];
 		int j;
author maintainer
#19 lore raw

PATCH 19/186 nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind()

In reply to Greg Kroah-Hartman

From: Krzysztof Kozlowski <[email protected]>

commit dded08927ca3c31a5c37f8e7f95fe98770475dd4 upstream.

Syzbot detected a NULL pointer dereference of nfc_llcp_sock->dev pointer (which is a 'struct nfc_dev *') with calls to llcp_sock_sendmsg() after a failed llcp_sock_bind(). The message being sent is a SOCK_DGRAM.

KASAN report:

  BUG: KASAN: null-ptr-deref in nfc_alloc_send_skb+0x2d/0xc0
  Read of size 4 at addr 00000000000005c8 by task llcp_sock_nfc_a/899

  CPU: 5 PID: 899 Comm: llcp_sock_nfc_a Not tainted 5.16.0-rc6-next-20211224-00001-gc6437fbf18b0 #125
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014
  Call Trace:
   <TASK>
   dump_stack_lvl+0x45/0x59
   ? nfc_alloc_send_skb+0x2d/0xc0
   __kasan_report.cold+0x117/0x11c
   ? mark_lock+0x480/0x4f0
   ? nfc_alloc_send_skb+0x2d/0xc0
   kasan_report+0x38/0x50
   nfc_alloc_send_skb+0x2d/0xc0
   nfc_llcp_send_ui_frame+0x18c/0x2a0
   ? nfc_llcp_send_i_frame+0x230/0x230
   ? __local_bh_enable_ip+0x86/0xe0
   ? llcp_sock_connect+0x470/0x470
   ? llcp_sock_connect+0x470/0x470
   sock_sendmsg+0x8e/0xa0
   ____sys_sendmsg+0x253/0x3f0
   ...

The issue was visible only with multiple simultaneous calls to bind() and sendmsg(), which resulted in most of the bind() calls to fail. The bind() was failing on checking if there is available WKS/SDP/SAP (respective bit in 'struct nfc_llcp_local' fields). When there was no available WKS/SDP/SAP, the bind returned error but the sendmsg() to such socket was able to trigger mentioned NULL pointer dereference of nfc_llcp_sock->dev.

The code looks simply racy and currently it protects several paths against race with checks for (!nfc_llcp_sock->local) which is NULL-ified in error paths of bind(). The llcp_sock_sendmsg() did not have such check but called function nfc_llcp_send_ui_frame() had, although not protected with lock_sock().

Therefore the race could look like (same socket is used all the time):
CPU0 CPU1
==== ====
llcp_sock_bind()
- lock_sock()
- success
- release_sock()
- return 0
llcp_sock_sendmsg()
- lock_sock()
- release_sock()
llcp_sock_bind(), same socket
- lock_sock()
- error
- nfc_llcp_send_ui_frame()
- if (!llcp_sock->local)
- llcp_sock->local = NULL
- nfc_put_device(dev)
- dereference llcp_sock->dev
- release_sock()
- return -ERRNO

The nfc_llcp_send_ui_frame() checked llcp_sock->local outside of the lock, which is racy and ineffective check. Instead, its caller llcp_sock_sendmsg(), should perform the check inside lock_sock().

Reported-and-tested-by [email protected]
Fixes b874dec21d1c ("NFC: Implement LLCP connection less Tx path")
---
 net/nfc/llcp_sock.c |    5 +++++
 1 file changed, 5 insertions(+)
net/nfc/llcp_sock.c +5 -0
@@ -797,6 +797,11 @@ static int llcp_sock_sendmsg(struct sock
 
 	lock_sock(sk);
 
+	if (!llcp_sock->local) {
+		release_sock(sk);
+		return -ENODEV;
+	}
+
 	if (sk->sk_type == SOCK_DGRAM) {
 		DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr,
 				 msg->msg_name);
author maintainer
#20 lore raw

PATCH 20/186 rtc: cmos: take rtc_lock while reading from CMOS

In reply to Greg Kroah-Hartman

From: Mateusz Jończyk <[email protected]>

commit 454f47ff464325223129b9b5b8d0b61946ec704d upstream.

Reading from the CMOS involves writing to the index register and then reading from the data register. Therefore access to the CMOS has to be serialized with rtc_lock. This invocation of CMOS_READ was not serialized, which could cause trouble when other code is accessing CMOS at the same time.

Use spin_lock_irq() like the rest of the function.

Nothing in kernel modifies the RTC_DM_BINARY bit, so there could be a separate pair of spin_lock_irq() / spin_unlock_irq() before doing the math.

---
 drivers/rtc/rtc-cmos.c |    3 +++
 1 file changed, 3 insertions(+)
drivers/rtc/rtc-cmos.c +3 -0
@@ -421,7 +421,10 @@ static int cmos_set_alarm(struct device
 	min = t->time.tm_min;
 	sec = t->time.tm_sec;
 
+	spin_lock_irq(&rtc_lock);
 	rtc_control = CMOS_READ(RTC_CONTROL);
+	spin_unlock_irq(&rtc_lock);
+
 	if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
 		/* Writing 0xff means "don't care" or "match all".  */
 		mon = (mon <= 12) ? bin2bcd(mon) : 0xff;
author maintainer
#21 lore raw

PATCH 21/186 media: flexcop-usb: fix control-message timeouts

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit cd1798a387825cc4a51282f5a611ad05bb1ad75f upstream.

USB control-message timeouts are specified in milliseconds and should specifically not vary with CONFIG_HZ.

Note that the driver was multiplying some of the timeout values with HZ twice resulting in 3000-second timeouts with HZ=1000.

Also note that two of the timeout defines are currently unused.

Fixes 2154be651b90 ("[media] redrat3: new rc-core IR transceiver device driver")
---
 drivers/media/usb/b2c2/flexcop-usb.c |   10 +++++-----
 drivers/media/usb/b2c2/flexcop-usb.h |   12 ++++++------
 2 files changed, 11 insertions(+), 11 deletions(-)
drivers/media/usb/b2c2/flexcop-usb.c +5 -5
@@ -86,7 +86,7 @@ static int flexcop_usb_readwrite_dw(stru
 			0,
 			fc_usb->data,
 			sizeof(u32),
-			B2C2_WAIT_FOR_OPERATION_RDW * HZ);
+			B2C2_WAIT_FOR_OPERATION_RDW);
 
 	if (ret != sizeof(u32)) {
 		err("error while %s dword from %d (%d).", read ? "reading" :
@@ -154,7 +154,7 @@ static int flexcop_usb_v8_memory_req(str
 			wIndex,
 			fc_usb->data,
 			buflen,
-			nWaitTime * HZ);
+			nWaitTime);
 	if (ret != buflen)
 		ret = -EIO;
 
@@ -248,13 +248,13 @@ static int flexcop_usb_i2c_req(struct fl
 		/* DKT 020208 - add this to support special case of DiSEqC */
 	case USB_FUNC_I2C_CHECKWRITE:
 		pipe = B2C2_USB_CTRL_PIPE_OUT;
-		nWaitTime = 2;
+		nWaitTime = 2000;
 		request_type |= USB_DIR_OUT;
 		break;
 	case USB_FUNC_I2C_READ:
 	case USB_FUNC_I2C_REPEATREAD:
 		pipe = B2C2_USB_CTRL_PIPE_IN;
-		nWaitTime = 2;
+		nWaitTime = 2000;
 		request_type |= USB_DIR_IN;
 		break;
 	default:
@@ -281,7 +281,7 @@ static int flexcop_usb_i2c_req(struct fl
 			wIndex,
 			fc_usb->data,
 			buflen,
-			nWaitTime * HZ);
+			nWaitTime);
 
 	if (ret != buflen)
 		ret = -EIO;
drivers/media/usb/b2c2/flexcop-usb.h +6 -6
@@ -91,13 +91,13 @@ typedef enum {
 	UTILITY_SRAM_TESTVERIFY     = 0x16,
 } flexcop_usb_utility_function_t;
 
-#define B2C2_WAIT_FOR_OPERATION_RW (1*HZ)
-#define B2C2_WAIT_FOR_OPERATION_RDW (3*HZ)
-#define B2C2_WAIT_FOR_OPERATION_WDW (1*HZ)
+#define B2C2_WAIT_FOR_OPERATION_RW 1000
+#define B2C2_WAIT_FOR_OPERATION_RDW 3000
+#define B2C2_WAIT_FOR_OPERATION_WDW 1000
 
-#define B2C2_WAIT_FOR_OPERATION_V8READ (3*HZ)
-#define B2C2_WAIT_FOR_OPERATION_V8WRITE (3*HZ)
-#define B2C2_WAIT_FOR_OPERATION_V8FLASH (3*HZ)
+#define B2C2_WAIT_FOR_OPERATION_V8READ 3000
+#define B2C2_WAIT_FOR_OPERATION_V8WRITE 3000
+#define B2C2_WAIT_FOR_OPERATION_V8FLASH 3000
 
 typedef enum {
 	V8_MEMORY_PAGE_DVB_CI = 0x20,
author maintainer
#22 lore raw

PATCH 22/186 media: mceusb: fix control-message timeouts

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit 16394e998cbb050730536bdf7e89f5a70efbd974 upstream.

USB control-message timeouts are specified in milliseconds and should specifically not vary with CONFIG_HZ.

Fixes 66e89522aff7 ("V4L/DVB: IR: add mceusb IR receiver driver")
Cc [email protected] # 2.6.36
---
 drivers/media/rc/mceusb.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
drivers/media/rc/mceusb.c +4 -4
@@ -1124,7 +1124,7 @@ static void mceusb_gen1_init(struct mceu
 	 */
 	ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
 			      USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
-			      data, USB_CTRL_MSG_SZ, HZ * 3);
+			      data, USB_CTRL_MSG_SZ, 3000);
 	dev_dbg(dev, "set address - ret = %d", ret);
 	dev_dbg(dev, "set address - data[0] = %d, data[1] = %d",
 						data[0], data[1]);
@@ -1132,20 +1132,20 @@ static void mceusb_gen1_init(struct mceu
 	/* set feature: bit rate 38400 bps */
 	ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
 			      USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
-			      0xc04e, 0x0000, NULL, 0, HZ * 3);
+			      0xc04e, 0x0000, NULL, 0, 3000);
 
 	dev_dbg(dev, "set feature - ret = %d", ret);
 
 	/* bRequest 4: set char length to 8 bits */
 	ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
 			      4, USB_TYPE_VENDOR,
-			      0x0808, 0x0000, NULL, 0, HZ * 3);
+			      0x0808, 0x0000, NULL, 0, 3000);
 	dev_dbg(dev, "set char length - retB = %d", ret);
 
 	/* bRequest 2: set handshaking to use DTR/DSR */
 	ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
 			      2, USB_TYPE_VENDOR,
-			      0x0000, 0x0100, NULL, 0, HZ * 3);
+			      0x0000, 0x0100, NULL, 0, 3000);
 	dev_dbg(dev, "set handshake  - retC = %d", ret);
 
 	/* device resume */
author maintainer
#23 lore raw

PATCH 23/186 media: em28xx: fix control-message timeouts

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit d9b7e8df3aa9b8c10708aab60e72e79ac08237e4 upstream.

USB control-message timeouts are specified in milliseconds and should specifically not vary with CONFIG_HZ.

Fixes a6c2ba283565 ("[PATCH] v4l: 716: support for em28xx board family")
Cc [email protected] # 2.6.16
---
 drivers/media/usb/em28xx/em28xx-core.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/media/usb/em28xx/em28xx-core.c +2 -2
@@ -94,7 +94,7 @@ int em28xx_read_reg_req_len(struct em28x
 	mutex_lock(&dev->ctrl_urb_lock);
 	ret = usb_control_msg(udev, pipe, req,
 			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			      0x0000, reg, dev->urb_buf, len, HZ);
+			      0x0000, reg, dev->urb_buf, len, 1000);
 	if (ret < 0) {
 		em28xx_regdbg("(pipe 0x%08x): IN:  %02x %02x %02x %02x %02x %02x %02x %02x  failed with error %i\n",
 			     pipe, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
@@ -162,7 +162,7 @@ int em28xx_write_regs_req(struct em28xx
 	memcpy(dev->urb_buf, buf, len);
 	ret = usb_control_msg(udev, pipe, req,
 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			      0x0000, reg, dev->urb_buf, len, HZ);
+			      0x0000, reg, dev->urb_buf, len, 1000);
 	mutex_unlock(&dev->ctrl_urb_lock);
 
 	if (ret < 0) {
author maintainer
#24 lore raw

PATCH 24/186 media: cpia2: fix control-message timeouts

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit 10729be03327f53258cb196362015ad5c6eabe02 upstream.

USB control-message timeouts are specified in milliseconds and should specifically not vary with CONFIG_HZ.

Fixes ab33d5071de7 ("V4L/DVB (3376): Add cpia2 camera support")
Cc [email protected] # 2.6.17
---
 drivers/media/usb/cpia2/cpia2_usb.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/media/usb/cpia2/cpia2_usb.c +2 -2
@@ -559,7 +559,7 @@ static int write_packet(struct usb_devic
 			       0,	/* index */
 			       buf,	/* buffer */
 			       size,
-			       HZ);
+			       1000);
 
 	kfree(buf);
 	return ret;
@@ -591,7 +591,7 @@ static int read_packet(struct usb_device
 			       0,	/* index */
 			       buf,	/* buffer */
 			       size,
-			       HZ);
+			       1000);
 
 	if (ret >= 0)
 		memcpy(registers, buf, size);
author maintainer
#25 lore raw

PATCH 25/186 media: s2255: fix control-message timeouts

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit f71d272ad4e354097020a4e6b1dc6e4b59feb50f upstream.

USB control-message timeouts are specified in milliseconds and should specifically not vary with CONFIG_HZ.

Use the common control-message timeout define for the five-second timeouts.

Fixes 38f993ad8b1f ("V4L/DVB (8125): This driver adds support for the Sensoray 2255 devices.")
Cc [email protected] # 2.6.27
---
 drivers/media/usb/s2255/s2255drv.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/media/usb/s2255/s2255drv.c +2 -2
@@ -1911,7 +1911,7 @@ static long s2255_vendor_req(struct s225
 				    USB_TYPE_VENDOR | USB_RECIP_DEVICE |
 				    USB_DIR_IN,
 				    Value, Index, buf,
-				    TransferBufferLength, HZ * 5);
+				    TransferBufferLength, USB_CTRL_SET_TIMEOUT);
 
 		if (r >= 0)
 			memcpy(TransferBuffer, buf, TransferBufferLength);
@@ -1920,7 +1920,7 @@ static long s2255_vendor_req(struct s225
 		r = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
 				    Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 				    Value, Index, buf,
-				    TransferBufferLength, HZ * 5);
+				    TransferBufferLength, USB_CTRL_SET_TIMEOUT);
 	}
 	kfree(buf);
 	return r;
author maintainer
#26 lore raw

PATCH 26/186 media: dib0700: fix undefined behavior in tuner shutdown

In reply to Greg Kroah-Hartman

From: Michael Kuron <[email protected]>

commit f7b77ebe6d2f49c7747b2d619586d1aa33f9ea91 upstream.

This fixes a problem where closing the tuner would leave it in a state where it would not tune to any channel when reopened. This problem was discovered as part of https://github.com/hselasky/webcamd/issues/16.

Since adap->id is 0 or 1, this bit-shift overflows, which is undefined behavior. The driver still worked in practice as the overflow would in most environments result in 0, which rendered the line a no-op. When running the driver as part of webcamd however, the overflow could lead to 0xff due to optimizations by the compiler, which would, in the end, improperly shut down the tuner.

The bug is a regression introduced in the commit referenced below. The present patch causes identical behavior to before that commit for adap->id equal to 0 or 1. The driver does not contain support for dib0700 devices with more adapters, assuming such even exist.

Tests have been performed with the Xbox One Digital TV Tuner on amd64. Not all dib0700 devices are expected to be affected by the regression; this code path is only taken by those with incorrect endpoint numbers.

Fixes 7757ddda6f4f ("[media] DiB0700: add function to change I2C-speed")
---
 drivers/media/usb/dvb-usb/dib0700_core.c |    2 --
 1 file changed, 2 deletions(-)
drivers/media/usb/dvb-usb/dib0700_core.c +0 -2
@@ -619,8 +619,6 @@ int dib0700_streaming_ctrl(struct dvb_us
 		deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->fe_adap[0].stream.props.endpoint);
 		if (onoff)
 			st->channel_state |=	1 << (adap->id);
-		else
-			st->channel_state |=	1 << ~(adap->id);
 	} else {
 		if (onoff)
 			st->channel_state |=	1 << (adap->fe_adap[0].stream.props.endpoint-2);
author maintainer
#27 lore raw

PATCH 27/186 media: redrat3: fix control-message timeouts

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit 2adc965c8bfa224e11ecccf9c92fd458c4236428 upstream.

USB control-message timeouts are specified in milliseconds and should specifically not vary with CONFIG_HZ.

Fixes 2154be651b90 ("[media] redrat3: new rc-core IR transceiver device driver")
---
 drivers/media/rc/redrat3.c |   22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)
drivers/media/rc/redrat3.c +11 -11
@@ -415,7 +415,7 @@ static int redrat3_send_cmd(int cmd, str
 	udev = rr3->udev;
 	res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd,
 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
-			      0x0000, 0x0000, data, sizeof(u8), HZ * 10);
+			      0x0000, 0x0000, data, sizeof(u8), 10000);
 
 	if (res < 0) {
 		dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",
@@ -491,7 +491,7 @@ static u32 redrat3_get_timeout(struct re
 	pipe = usb_rcvctrlpipe(rr3->udev, 0);
 	ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,
 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
-			      RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5);
+			      RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, 5000);
 	if (ret != len)
 		dev_warn(rr3->dev, "Failed to read timeout from hardware\n");
 	else {
@@ -521,7 +521,7 @@ static int redrat3_set_timeout(struct rc
 	ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM,
 		     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 		     RR3_IR_IO_SIG_TIMEOUT, 0, timeout, sizeof(*timeout),
-		     HZ * 25);
+		     25000);
 	dev_dbg(dev, "set ir parm timeout %d ret 0x%02x\n",
 						be32_to_cpu(*timeout), ret);
 
@@ -553,32 +553,32 @@ static void redrat3_reset(struct redrat3
 	*val = 0x01;
 	rc = usb_control_msg(udev, rxpipe, RR3_RESET,
 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
-			     RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25);
+			     RR3_CPUCS_REG_ADDR, 0, val, len, 25000);
 	dev_dbg(dev, "reset returned 0x%02x\n", rc);
 
 	*val = length_fuzz;
 	rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
-			     RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25);
+			     RR3_IR_IO_LENGTH_FUZZ, 0, val, len, 25000);
 	dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
 
 	*val = (65536 - (minimum_pause * 2000)) / 256;
 	rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
-			     RR3_IR_IO_MIN_PAUSE, 0, val, len, HZ * 25);
+			     RR3_IR_IO_MIN_PAUSE, 0, val, len, 25000);
 	dev_dbg(dev, "set ir parm min pause %d rc 0x%02x\n", *val, rc);
 
 	*val = periods_measure_carrier;
 	rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
-			     RR3_IR_IO_PERIODS_MF, 0, val, len, HZ * 25);
+			     RR3_IR_IO_PERIODS_MF, 0, val, len, 25000);
 	dev_dbg(dev, "set ir parm periods measure carrier %d rc 0x%02x", *val,
 									rc);
 
 	*val = RR3_DRIVER_MAXLENS;
 	rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
-			     RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25);
+			     RR3_IR_IO_MAX_LENGTHS, 0, val, len, 25000);
 	dev_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
 
 	kfree(val);
@@ -596,7 +596,7 @@ static void redrat3_get_firmware_rev(str
 	rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),
 			     RR3_FW_VERSION,
 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
-			     0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5);
+			     0, 0, buffer, RR3_FW_VERSION_LEN, 5000);
 
 	if (rc >= 0)
 		dev_info(rr3->dev, "Firmware rev: %s", buffer);
@@ -836,14 +836,14 @@ static int redrat3_transmit_ir(struct rc
 
 	pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
 	ret = usb_bulk_msg(rr3->udev, pipe, irdata,
-			    sendbuf_len, &ret_len, 10 * HZ);
+			    sendbuf_len, &ret_len, 10000);
 	dev_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret);
 
 	/* now tell the hardware to transmit what we sent it */
 	pipe = usb_rcvctrlpipe(rr3->udev, 0);
 	ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
-			      0, 0, irdata, 2, HZ * 10);
+			      0, 0, irdata, 2, 10000);
 
 	if (ret < 0)
 		dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
author maintainer
#28 lore raw

PATCH 28/186 media: pvrusb2: fix control-message timeouts

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit b82bf9b9dc305d7d3d93eab106d70dbf2171b43e upstream.

USB control-message timeouts are specified in milliseconds and should specifically not vary with CONFIG_HZ.

Fixes d855497edbfb ("V4L/DVB (4228a): pvrusb2 to kernel 2.6.18")
Cc [email protected] # 2.6.18
---
 drivers/media/usb/pvrusb2/pvrusb2-hdw.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
drivers/media/usb/pvrusb2/pvrusb2-hdw.c +4 -4
@@ -1476,7 +1476,7 @@ static int pvr2_upload_firmware1(struct
 	for (address = 0; address < fwsize; address += 0x800) {
 		memcpy(fw_ptr, fw_entry->data + address, 0x800);
 		ret += usb_control_msg(hdw->usb_dev, pipe, 0xa0, 0x40, address,
-				       0, fw_ptr, 0x800, HZ);
+				       0, fw_ptr, 0x800, 1000);
 	}
 
 	trace_firmware("Upload done, releasing device's CPU");
@@ -1614,7 +1614,7 @@ int pvr2_upload_firmware2(struct pvr2_hd
 			((u32 *)fw_ptr)[icnt] = swab32(((u32 *)fw_ptr)[icnt]);
 
 		ret |= usb_bulk_msg(hdw->usb_dev, pipe, fw_ptr,bcnt,
-				    &actual_length, HZ);
+				    &actual_length, 1000);
 		ret |= (actual_length != bcnt);
 		if (ret) break;
 		fw_done += bcnt;
@@ -3433,7 +3433,7 @@ void pvr2_hdw_cpufw_set_enabled(struct p
 						      0xa0,0xc0,
 						      address,0,
 						      hdw->fw_buffer+address,
-						      0x800,HZ);
+						      0x800,1000);
 				if (ret < 0) break;
 			}
 
@@ -3961,7 +3961,7 @@ void pvr2_hdw_cpureset_assert(struct pvr
 	/* Write the CPUCS register on the 8051.  The lsb of the register
 	   is the reset bit; a 1 asserts reset while a 0 clears it. */
 	pipe = usb_sndctrlpipe(hdw->usb_dev, 0);
-	ret = usb_control_msg(hdw->usb_dev,pipe,0xa0,0x40,0xe600,0,da,1,HZ);
+	ret = usb_control_msg(hdw->usb_dev,pipe,0xa0,0x40,0xe600,0,da,1,1000);
 	if (ret < 0) {
 		pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 			   "cpureset_assert(%d) error=%d",val,ret);
author maintainer
#29 lore raw

PATCH 29/186 media: stk1160: fix control-message timeouts

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit 6aa6e70cdb5b863a57bad61310bf89b6617a5d2d upstream.

USB control-message timeouts are specified in milliseconds and should specifically not vary with CONFIG_HZ.

Fixes 9cb2173e6ea8 ("[media] media: Add stk1160 new driver (easycap replacement)")
---
 drivers/media/usb/stk1160/stk1160-core.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/media/usb/stk1160/stk1160-core.c +2 -2
@@ -75,7 +75,7 @@ int stk1160_read_reg(struct stk1160 *dev
 		return -ENOMEM;
 	ret = usb_control_msg(dev->udev, pipe, 0x00,
 			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			0x00, reg, buf, sizeof(u8), HZ);
+			0x00, reg, buf, sizeof(u8), 1000);
 	if (ret < 0) {
 		stk1160_err("read failed on reg 0x%x (%d)\n",
 			reg, ret);
@@ -95,7 +95,7 @@ int stk1160_write_reg(struct stk1160 *de
 
 	ret =  usb_control_msg(dev->udev, pipe, 0x01,
 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			value, reg, NULL, 0, HZ);
+			value, reg, NULL, 0, 1000);
 	if (ret < 0) {
 		stk1160_err("write failed on reg 0x%x (%d)\n",
 			reg, ret);
author maintainer
#30 lore raw

PATCH 30/186 can: softing_cs: softingcs_probe(): fix memleak on registration failure

In reply to Greg Kroah-Hartman

From: Johan Hovold <[email protected]>

commit ced4913efb0acc844ed65cc01d091a85d83a2082 upstream.

In case device registration fails during probe, the driver state and the embedded platform device structure needs to be freed using platform_device_put() to properly free all resources (e.g. the device name).

---
 drivers/net/can/softing/softing_cs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/net/can/softing/softing_cs.c +1 -1
@@ -304,7 +304,7 @@ static int softingcs_probe(struct pcmcia
 	return 0;
 
 platform_failed:
-	kfree(dev);
+	platform_device_put(pdev);
 mem_failed:
 pcmcia_bad:
 pcmcia_failed:
author maintainer
#31 lore raw

PATCH 31/186 shmem: fix a race between shmem_unused_huge_shrink and shmem_evict_inode

In reply to Greg Kroah-Hartman

From: Gang Li <[email protected]>

commit 62c9827cbb996c2c04f615ecd783ce28bcea894b upstream.

Fix a data race in commit 779750d20b93 ("shmem: split huge pages beyond i_size under memory pressure").

Here are call traces causing race:

Call Trace 1:

     shmem_unused_huge_shrink+0x3ae/0x410
     ? __list_lru_walk_one.isra.5+0x33/0x160
     super_cache_scan+0x17c/0x190
     shrink_slab.part.55+0x1ef/0x3f0
     shrink_node+0x10e/0x330
     kswapd+0x380/0x740
     kthread+0xfc/0x130
     ? mem_cgroup_shrink_node+0x170/0x170
     ? kthread_create_on_node+0x70/0x70
     ret_from_fork+0x1f/0x30

Call Trace 2:

     shmem_evict_inode+0xd8/0x190
     evict+0xbe/0x1c0
     do_unlinkat+0x137/0x330
     do_syscall_64+0x76/0x120
     entry_SYSCALL_64_after_hwframe+0x3d/0xa2

A simple explanation:

Image there are 3 items in the local list (@list). In the first traversal, A is not deleted from @list.

1) A->B->C

        ^
        |
        pos (leave)

In the second traversal, B is deleted from @list. Concurrently, A is deleted from @list through shmem_evict_inode() since last reference counter of inode is dropped by other thread. Then the @list is corrupted.

2) A->B->C

        ^  ^
        |  |
     evict pos (drop)

We should make sure the inode is either on the global list or deleted from any local list before iput().

Fixed by moving inodes back to global list before we put them.

[[email protected]: coding style fixes]

---
 mm/shmem.c |   37 +++++++++++++++++++++----------------
 1 file changed, 21 insertions(+), 16 deletions(-)
mm/shmem.c +21 -16
@@ -450,7 +450,7 @@ static unsigned long shmem_unused_huge_s
 	struct shmem_inode_info *info;
 	struct page *page;
 	unsigned long batch = sc ? sc->nr_to_scan : 128;
-	int removed = 0, split = 0;
+	int split = 0;
 
 	if (list_empty(&sbinfo->shrinklist))
 		return SHRINK_STOP;
@@ -465,7 +465,6 @@ static unsigned long shmem_unused_huge_s
 		/* inode is about to be evicted */
 		if (!inode) {
 			list_del_init(&info->shrinklist);
-			removed++;
 			goto next;
 		}
 
@@ -473,12 +472,12 @@ static unsigned long shmem_unused_huge_s
 		if (round_up(inode->i_size, PAGE_SIZE) ==
 				round_up(inode->i_size, HPAGE_PMD_SIZE)) {
 			list_move(&info->shrinklist, &to_remove);
-			removed++;
 			goto next;
 		}
 
 		list_move(&info->shrinklist, &list);
 next:
+		sbinfo->shrinklist_len--;
 		if (!--batch)
 			break;
 	}
@@ -498,7 +497,7 @@ next:
 		inode = &info->vfs_inode;
 
 		if (nr_to_split && split >= nr_to_split)
-			goto leave;
+			goto move_back;
 
 		page = find_get_page(inode->i_mapping,
 				(inode->i_size & HPAGE_PMD_MASK) >> PAGE_SHIFT);
@@ -512,38 +511,44 @@ next:
 		}
 
 		/*
-		 * Leave the inode on the list if we failed to lock
-		 * the page at this time.
+		 * Move the inode on the list back to shrinklist if we failed
+		 * to lock the page at this time.
 		 *
 		 * Waiting for the lock may lead to deadlock in the
 		 * reclaim path.
 		 */
 		if (!trylock_page(page)) {
 			put_page(page);
-			goto leave;
+			goto move_back;
 		}
 
 		ret = split_huge_page(page);
 		unlock_page(page);
 		put_page(page);
 
-		/* If split failed leave the inode on the list */
+		/* If split failed move the inode on the list back to shrinklist */
 		if (ret)
-			goto leave;
+			goto move_back;
 
 		split++;
 drop:
 		list_del_init(&info->shrinklist);
-		removed++;
-leave:
+		goto put;
+move_back:
+		/*
+		 * Make sure the inode is either on the global list or deleted
+		 * from any local list before iput() since it could be deleted
+		 * in another thread once we put the inode (then the local list
+		 * is corrupted).
+		 */
+		spin_lock(&sbinfo->shrinklist_lock);
+		list_move(&info->shrinklist, &sbinfo->shrinklist);
+		sbinfo->shrinklist_len++;
+		spin_unlock(&sbinfo->shrinklist_lock);
+put:
 		iput(inode);
 	}
 
-	spin_lock(&sbinfo->shrinklist_lock);
-	list_splice_tail(&list, &sbinfo->shrinklist);
-	sbinfo->shrinklist_len -= removed;
-	spin_unlock(&sbinfo->shrinklist_lock);
-
 	return split;
 }
 
author maintainer
#32 lore raw

PATCH 32/186 PCI: Add function 1 DMA alias quirk for Marvell 88SE9125 SATA controller

In reply to Greg Kroah-Hartman

From: Yifeng Li <[email protected]>

commit e445375882883f69018aa669b67cbb37ec873406 upstream.

Like other SATA controller chips in the Marvell 88SE91xx series, the Marvell 88SE9125 has the same DMA requester ID hardware bug that prevents it from working under IOMMU. Add it to the list of devices that need the quirk.

Without this patch, device initialization fails with DMA errors:

ata8: softreset failed (1st FIS failed)
DMAR: DRHD: handling fault status reg 2
DMAR: [DMA Write NO_PASID] Request device [03:00.1] fault addr 0xfffc0000 [fault reason 0x02] Present bit in context entry is clear
DMAR: DRHD: handling fault status reg 2
DMAR: [DMA Read NO_PASID] Request device [03:00.1] fault addr 0xfffc0000 [fault reason 0x02] Present bit in context entry is clear

After applying the patch, the controller can be successfully initialized:

ata8: SATA link up 1.5 Gbps (SStatus 113 SControl 330)
ata8.00: ATAPI: PIONEER BD-RW BDR-207M, 1.21, max UDMA/100
ata8.00: configured for UDMA/100
scsi 7:0:0:0: CD-ROM PIONEER BD-RW BDR-207M 1.21 PQ: 0 ANSI: 5

---
 drivers/pci/quirks.c |    3 +++
 1 file changed, 3 insertions(+)
drivers/pci/quirks.c +3 -0
@@ -4004,6 +4004,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_M
 			 quirk_dma_func1_alias);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
 			 quirk_dma_func1_alias);
+/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125,
+			 quirk_dma_func1_alias);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
 			 quirk_dma_func1_alias);
 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
author maintainer
#33 lore raw

PATCH 33/186 Bluetooth: cmtp: fix possible panic when cmtp_init_sockets() fails

In reply to Greg Kroah-Hartman

From: Wang Hai <[email protected]>

[ Upstream commit 2a7ca7459d905febf519163bd9e3eed894de6bb7 ]

I got a kernel BUG report when doing fault injection test:

------------[ cut here ]------------
kernel BUG at lib/list_debug.c:45!
...
RIP: 0010:__list_del_entry_valid.cold+0x12/0x4d
...
Call Trace:
 proto_unregister+0x83/0x220
 cmtp_cleanup_sockets+0x37/0x40 [cmtp]
 cmtp_exit+0xe/0x1f [cmtp]
 do_syscall_64+0x35/0xb0
 entry_SYSCALL_64_after_hwframe+0x44/0xae

If cmtp_init_sockets() in cmtp_init() fails, cmtp_init() still returns success. This will cause a kernel bug when accessing uncreated ctmp related data when the module exits.

Fixes 1da177e4c3f4 ("Linux-2.6.12-rc2")
---
 net/bluetooth/cmtp/core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
net/bluetooth/cmtp/core.c +1 -3
index 9873684a9d8ff..4764ed73f33bf 100644
@@ -499,9 +499,7 @@ static int __init cmtp_init(void)
 {
 	BT_INFO("CMTP (CAPI Emulation) ver %s", VERSION);
 
-	cmtp_init_sockets();
-
-	return 0;
+	return cmtp_init_sockets();
 }
 
 static void __exit cmtp_exit(void)
Signature · 1 line
2.34.1
author maintainer
#34 lore raw

PATCH 34/186 clk: bcm-2835: Pick the closest clock rate

In reply to Greg Kroah-Hartman

From: Maxime Ripard <[email protected]>

[ Upstream commit 5517357a4733d7cf7c17fc79d0530cfa47add372 ]

The driver currently tries to pick the closest rate that is lower than the rate being requested.

This causes an issue with clk_set_min_rate() since it actively checks for the rounded rate to be above the minimum that was just set.

Let's change the logic a bit to pick the closest rate to the requested rate, no matter if it's actually higher or lower.

---
 drivers/clk/bcm/clk-bcm2835.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/clk/bcm/clk-bcm2835.c +1 -1
index 98295b9703178..d6cd1cc3f8e4d 100644
@@ -1233,7 +1233,7 @@ static int bcm2835_clock_determine_rate(struct clk_hw *hw,
 		rate = bcm2835_clock_choose_div_and_prate(hw, i, req->rate,
 							  &div, &prate,
 							  &avgrate);
-		if (rate > best_rate && rate <= req->rate) {
+		if (abs(req->rate - rate) < abs(req->rate - best_rate)) {
 			best_parent = parent;
 			best_prate = prate;
 			best_rate = rate;
Signature · 1 line
2.34.1
author maintainer
#35 lore raw

PATCH 35/186 clk: bcm-2835: Remove rounding up the dividers

In reply to Greg Kroah-Hartman

From: Maxime Ripard <[email protected]>

[ Upstream commit 8ca011ef4af48a7af7b15afd8a4a44039dd04cea ]

The driver, once it found a divider, tries to round it up by increasing the least significant bit of the fractional part by one when the round_up argument is set and there's a remainder.

However, since it increases the divider it will actually reduce the clock rate below what we were asking for, leading to issues with clk_set_min_rate() that will complain that our rounded clock rate is below the minimum of the rate.

Since the dividers are fairly precise already, let's remove that part so that we can have clk_set_min_rate() working.

This is effectively a revert of 9c95b32ca093 ("clk: bcm2835: add a round up ability to the clock divisor").

---
 drivers/clk/bcm/clk-bcm2835.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)
drivers/clk/bcm/clk-bcm2835.c +3 -8
index d6cd1cc3f8e4d..8ccd72cc66bab 100644
@@ -949,8 +949,7 @@ static int bcm2835_clock_is_on(struct clk_hw *hw)
 
 static u32 bcm2835_clock_choose_div(struct clk_hw *hw,
 				    unsigned long rate,
-				    unsigned long parent_rate,
-				    bool round_up)
+				    unsigned long parent_rate)
 {
 	struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw);
 	const struct bcm2835_clock_data *data = clock->data;
@@ -962,10 +961,6 @@ static u32 bcm2835_clock_choose_div(struct clk_hw *hw,
 
 	rem = do_div(temp, rate);
 	div = temp;
-
-	/* Round up and mask off the unused bits */
-	if (round_up && ((div & unused_frac_mask) != 0 || rem != 0))
-		div += unused_frac_mask + 1;
 	div &= ~unused_frac_mask;
 
 	/* different clamping limits apply for a mash clock */
@@ -1096,7 +1091,7 @@ static int bcm2835_clock_set_rate(struct clk_hw *hw,
 	struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw);
 	struct bcm2835_cprman *cprman = clock->cprman;
 	const struct bcm2835_clock_data *data = clock->data;
-	u32 div = bcm2835_clock_choose_div(hw, rate, parent_rate, false);
+	u32 div = bcm2835_clock_choose_div(hw, rate, parent_rate);
 	u32 ctl;
 
 	spin_lock(&cprman->regs_lock);
@@ -1147,7 +1142,7 @@ static unsigned long bcm2835_clock_choose_div_and_prate(struct clk_hw *hw,
 
 	if (!(BIT(parent_idx) & data->set_rate_parent)) {
 		*prate = clk_hw_get_rate(parent);
-		*div = bcm2835_clock_choose_div(hw, rate, *prate, true);
+		*div = bcm2835_clock_choose_div(hw, rate, *prate);
 
 		*avgrate = bcm2835_clock_rate_from_divisor(clock, *prate, *div);
 
Signature · 1 line
2.34.1
author maintainer
#36 lore raw

PATCH 36/186 wcn36xx: Indicate beacon not connection loss on MISSED_BEACON_IND

In reply to Greg Kroah-Hartman

From: Bryan O'Donoghue <[email protected]>

[ Upstream commit 588b45c88ae130fe373a8c50edaf54735c3f4fe3 ]

Firmware can trigger a missed beacon indication, this is not the same as a lost signal.

Flag to Linux the missed beacon and let the WiFi stack decide for itself if the link is up or down by sending its own probe to determine this.

We should only be signalling the link is lost when the firmware indicates

Fixes 8e84c2582169 ("wcn36xx: mac80211 driver for Qualcomm WCN3660/WCN3680 hardware")
---
 drivers/net/wireless/ath/wcn36xx/smd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/net/wireless/ath/wcn36xx/smd.c +2 -2
index c5b5fbcd2066c..3073c5af7dae8 100644
@@ -2053,7 +2053,7 @@ static int wcn36xx_smd_missed_beacon_ind(struct wcn36xx *wcn,
 			wcn36xx_dbg(WCN36XX_DBG_HAL, "beacon missed bss_index %d\n",
 				    tmp->bss_index);
 			vif = wcn36xx_priv_to_vif(tmp);
-			ieee80211_connection_loss(vif);
+			ieee80211_beacon_loss(vif);
 		}
 		return 0;
 	}
@@ -2068,7 +2068,7 @@ static int wcn36xx_smd_missed_beacon_ind(struct wcn36xx *wcn,
 			wcn36xx_dbg(WCN36XX_DBG_HAL, "beacon missed bss_index %d\n",
 				    rsp->bss_index);
 			vif = wcn36xx_priv_to_vif(tmp);
-			ieee80211_connection_loss(vif);
+			ieee80211_beacon_loss(vif);
 			return 0;
 		}
 	}
Signature · 1 line
2.34.1
author maintainer
#37 lore raw

PATCH 37/186 media: em28xx: fix memory leak in em28xx_init_dev

In reply to Greg Kroah-Hartman

From: Dongliang Mu <[email protected]>

[ Upstream commit 22be5a10d0b24eec9e45decd15d7e6112b25f080 ]

In the em28xx_init_rev, if em28xx_audio_setup fails, this function fails to deallocate the media_dev allocated in the em28xx_media_device_init.

Fix this by adding em28xx_unregister_media_device to free media_dev.

BTW, this patch is tested in my local syzkaller instance, and it can prevent the memory leak from occurring again.

CC Pavel Skripkin <[email protected]>
Fixes 37ecc7b1278f ("[media] em28xx: add media controller support")
---
 drivers/media/usb/em28xx/em28xx-cards.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)
drivers/media/usb/em28xx/em28xx-cards.c +12 -6
index 9747e23aad271..b736c027a0bd0 100644
@@ -3386,8 +3386,10 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
 
 	if (dev->is_audio_only) {
 		retval = em28xx_audio_setup(dev);
-		if (retval)
-			return -ENODEV;
+		if (retval) {
+			retval = -ENODEV;
+			goto err_deinit_media;
+		}
 		em28xx_init_extension(dev);
 
 		return 0;
@@ -3417,7 +3419,7 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
 		dev_err(&dev->intf->dev,
 			"%s: em28xx_i2c_register bus 0 - error [%d]!\n",
 		       __func__, retval);
-		return retval;
+		goto err_deinit_media;
 	}
 
 	/* register i2c bus 1 */
@@ -3433,9 +3435,7 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
 			       "%s: em28xx_i2c_register bus 1 - error [%d]!\n",
 			       __func__, retval);
 
-			em28xx_i2c_unregister(dev, 0);
-
-			return retval;
+			goto err_unreg_i2c;
 		}
 	}
 
@@ -3443,6 +3443,12 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
 	em28xx_card_setup(dev);
 
 	return 0;
+
+err_unreg_i2c:
+	em28xx_i2c_unregister(dev, 0);
+err_deinit_media:
+	em28xx_unregister_media_device(dev);
+	return retval;
 }
 
 /* high bandwidth multiplier, as encoded in highspeed endpoint descriptors */
Signature · 1 line
2.34.1
author maintainer
#38 lore raw

PATCH 38/186 Bluetooth: stop proccessing malicious adv data

In reply to Greg Kroah-Hartman

From: Pavel Skripkin <[email protected]>

[ Upstream commit 3a56ef719f0b9682afb8a86d64b2399e36faa4e6 ]

Syzbot reported slab-out-of-bounds read in hci_le_adv_report_evt(). The problem was in missing validaion check.

We should check if data is not malicious and we can read next data block. If we won't check ptr validness, code can read a way beyond skb->end and it can cause problems, of course.

Fixes e95beb414168 ("Bluetooth: hci_le_adv_report_evt code refactoring")
Reported-and-tested-by [email protected]
---
 net/bluetooth/hci_event.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
net/bluetooth/hci_event.c +7 -1
index 5186f199d892c..eca596a56f46b 100644
@@ -4967,7 +4967,8 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		struct hci_ev_le_advertising_info *ev = ptr;
 		s8 rssi;
 
-		if (ev->length <= HCI_MAX_AD_LENGTH) {
+		if (ev->length <= HCI_MAX_AD_LENGTH &&
+		    ev->data + ev->length <= skb_tail_pointer(skb)) {
 			rssi = ev->data[ev->length];
 			process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
 					   ev->bdaddr_type, NULL, 0, rssi,
@@ -4977,6 +4978,11 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		}
 
 		ptr += sizeof(*ev) + ev->length + 1;
+
+		if (ptr > (void *) skb_tail_pointer(skb) - sizeof(*ev)) {
+			bt_dev_err(hdev, "Malicious advertising data. Stopping processing");
+			break;
+		}
 	}
 
 	hci_dev_unlock(hdev);
Signature · 1 line
2.34.1
author maintainer
#39 lore raw

PATCH 39/186 media: dmxdev: fix UAF when dvb_register_device() fails

In reply to Greg Kroah-Hartman

From: Wang Hai <[email protected]>

[ Upstream commit ab599eb11882f834951c436cc080c3455ba32b9b ]

I got a use-after-free report:

dvbdev: dvb_register_device: failed to create device dvb1.dvr0 (-12)
...
==================================================================

BUG: KASAN: use-after-free in dvb_dmxdev_release+0xce/0x2f0
...
Call Trace:
 dump_stack_lvl+0x6c/0x8b
 print_address_description.constprop.0+0x48/0x70
 kasan_report.cold+0x82/0xdb
 __asan_load4+0x6b/0x90
 dvb_dmxdev_release+0xce/0x2f0
...
Allocated by task 7666:
 kasan_save_stack+0x23/0x50
 __kasan_kmalloc+0x83/0xa0
 kmem_cache_alloc_trace+0x22e/0x470
 dvb_register_device+0x12f/0x980
 dvb_dmxdev_init+0x1f3/0x230
...
Freed by task 7666:
 kasan_save_stack+0x23/0x50
 kasan_set_track+0x20/0x30
 kasan_set_free_info+0x24/0x40
 __kasan_slab_free+0xf2/0x130
 kfree+0xd1/0x5c0
 dvb_register_device.cold+0x1ac/0x1fa
 dvb_dmxdev_init+0x1f3/0x230

...

When dvb_register_device() in dvb_dmxdev_init() fails, dvb_dmxdev_init() does not return a failure, and the memory pointed to by dvbdev or dvr_dvbdev is invalid at this point. If they are used subsequently, it will result in UFA or null-ptr-deref.

If dvb_register_device() in dvb_dmxdev_init() fails, fix the bug by making dvb_dmxdev_init() return an error as well.

Fixes 1da177e4c3f4 ("Linux-2.6.12-rc2")
---
 drivers/media/dvb-core/dmxdev.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)
drivers/media/dvb-core/dmxdev.c +15 -3
index 51009b2718a3e..ab9c4dba2a695 100644
@@ -1209,7 +1209,7 @@ static const struct dvb_device dvbdev_dvr = {
 };
 int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
 {
-	int i;
+	int i, ret;
 
 	if (dmxdev->demux->open(dmxdev->demux) < 0)
 		return -EUSERS;
@@ -1227,14 +1227,26 @@ int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
 					    DMXDEV_STATE_FREE);
 	}
 
-	dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
+	ret = dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
 			    DVB_DEVICE_DEMUX, dmxdev->filternum);
-	dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
+	if (ret < 0)
+		goto err_register_dvbdev;
+
+	ret = dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
 			    dmxdev, DVB_DEVICE_DVR, dmxdev->filternum);
+	if (ret < 0)
+		goto err_register_dvr_dvbdev;
 
 	dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);
 
 	return 0;
+
+err_register_dvr_dvbdev:
+	dvb_unregister_device(dmxdev->dvbdev);
+err_register_dvbdev:
+	vfree(dmxdev->filter);
+	dmxdev->filter = NULL;
+	return ret;
 }
 
 EXPORT_SYMBOL(dvb_dmxdev_init);
Signature · 1 line
2.34.1
author maintainer
#40 lore raw

PATCH 40/186 crypto: qce - fix uaf on qce_ahash_register_one

In reply to Greg Kroah-Hartman

From: Chengfeng Ye <[email protected]>

[ Upstream commit b4cb4d31631912842eb7dce02b4350cbb7562d5e ]

Pointer base points to sub field of tmpl, it
is dereferenced after tmpl is freed. Fix
this by accessing base before free tmpl.

Fixes ec8f5d8f ("crypto: qce - Qualcomm crypto engine driver")
---
 drivers/crypto/qce/sha.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/crypto/qce/sha.c +1 -1
index 47e114ac09d01..ff1e788f92767 100644
@@ -544,8 +544,8 @@ static int qce_ahash_register_one(const struct qce_ahash_def *def,
 
 	ret = crypto_register_ahash(alg);
 	if (ret) {
-		kfree(tmpl);
 		dev_err(qce->dev, "%s registration failed\n", base->cra_name);
+		kfree(tmpl);
 		return ret;
 	}
 
Signature · 1 line
2.34.1
author maintainer
#41 lore raw

PATCH 41/186 tty: serial: atmel: Check return code of dmaengine_submit()

In reply to Greg Kroah-Hartman

From: Tudor Ambarus <[email protected]>

[ Upstream commit 1e67bd2b8cb90b66e89562598e9c2046246832d3 ]

The tx_submit() method of struct dma_async_tx_descriptor is entitled to do sanity checks and return errors if encountered. It's not the case for the DMA controller drivers that this client is using (at_h/xdmac), because they currently don't do sanity checks and always return a positive cookie at tx_submit() method. In case the controller drivers will implement sanity checks and return errors, print a message so that the client will be informed that something went wrong at tx_submit() level.

---
 drivers/tty/serial/atmel_serial.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
drivers/tty/serial/atmel_serial.c +10 -0
index a00227d312d3f..9a56b88df95f8 100644
@@ -925,6 +925,11 @@ static void atmel_tx_dma(struct uart_port *port)
 		desc->callback = atmel_complete_tx_dma;
 		desc->callback_param = atmel_port;
 		atmel_port->cookie_tx = dmaengine_submit(desc);
+		if (dma_submit_error(atmel_port->cookie_tx)) {
+			dev_err(port->dev, "dma_submit_error %d\n",
+				atmel_port->cookie_tx);
+			return;
+		}
 	}
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
@@ -1183,6 +1188,11 @@ static int atmel_prepare_rx_dma(struct uart_port *port)
 	desc->callback_param = port;
 	atmel_port->desc_rx = desc;
 	atmel_port->cookie_rx = dmaengine_submit(desc);
+	if (dma_submit_error(atmel_port->cookie_rx)) {
+		dev_err(port->dev, "dma_submit_error %d\n",
+			atmel_port->cookie_rx);
+		goto chan_err;
+	}
 
 	return 0;
 
Signature · 1 line
2.34.1
author maintainer
#42 lore raw

PATCH 42/186 tty: serial: atmel: Call dma_async_issue_pending()

In reply to Greg Kroah-Hartman

From: Tudor Ambarus <[email protected]>

[ Upstream commit 4f4b9b5895614eb2e2b5f4cab7858f44bd113e1b ]

The driver wrongly assummed that tx_submit() will start the transfer, which is not the case, now that the at_xdmac driver is fixed. tx_submit is supposed to push the current transaction descriptor to a pending queue, waiting for issue_pending to be called. issue_pending must start the transfer, not tx_submit.

Fixes 34df42f59a60 ("serial: at91: add rx dma support")
Fixes 08f738be88bb ("serial: at91: add tx dma support")
---
 drivers/tty/serial/atmel_serial.c | 4 ++++
 1 file changed, 4 insertions(+)
drivers/tty/serial/atmel_serial.c +4 -0
index 9a56b88df95f8..4da5604d7385a 100644
@@ -930,6 +930,8 @@ static void atmel_tx_dma(struct uart_port *port)
 				atmel_port->cookie_tx);
 			return;
 		}
+
+		dma_async_issue_pending(chan);
 	}
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
@@ -1194,6 +1196,8 @@ static int atmel_prepare_rx_dma(struct uart_port *port)
 		goto chan_err;
 	}
 
+	dma_async_issue_pending(atmel_port->chan_rx);
+
 	return 0;
 
 chan_err:
Signature · 1 line
2.34.1
author maintainer
#43 lore raw

PATCH 43/186 media: mtk-vcodec: call v4l2_m2m_ctx_release first when file is released

In reply to Greg Kroah-Hartman

From: Dafna Hirschfeld <[email protected]>

[ Upstream commit 9f89c881bffbdffe4060ffaef3489a2830a6dd9c ]

The func v4l2_m2m_ctx_release waits for currently running jobs to finish and then stop streaming both queues and frees the buffers. All this should be done before the call to mtk_vcodec_enc_release which frees the encoder handler. This fixes null-pointer dereference bug:

[  638.028076] Mem abort info:
[  638.030932]   ESR = 0x96000004
[  638.033978]   EC = 0x25: DABT (current EL), IL = 32 bits
[  638.039293]   SET = 0, FnV = 0
[  638.042338]   EA = 0, S1PTW = 0
[  638.045474]   FSC = 0x04: level 0 translation fault
[  638.050349] Data abort info:
[  638.053224]   ISV = 0, ISS = 0x00000004
[  638.057055]   CM = 0, WnR = 0
[  638.060018] user pgtable: 4k pages, 48-bit VAs, pgdp=000000012b6db000
[  638.066485] [00000000000001a0] pgd=0000000000000000, p4d=0000000000000000
[  638.073277] Internal error: Oops: 96000004 [#1] SMP
[  638.078145] Modules linked in: rfkill mtk_vcodec_dec mtk_vcodec_enc uvcvideo mtk_mdp mtk_vcodec_common videobuf2_dma_contig v4l2_h264 cdc_ether v4l2_mem2mem videobuf2_vmalloc usbnet videobuf2_memops videobuf2_v4l2 r8152 videobuf2_common videodev cros_ec_sensors cros_ec_sensors_core industrialio_triggered_buffer kfifo_buf elan_i2c elants_i2c sbs_battery mc cros_usbpd_charger cros_ec_chardev cros_usbpd_logger crct10dif_ce mtk_vpu fuse ip_tables x_tables ipv6
[  638.118583] CPU: 0 PID: 212 Comm: kworker/u8:5 Not tainted 5.15.0-06427-g58a1d4dcfc74-dirty #109
[  638.127357] Hardware name: Google Elm (DT)
[  638.131444] Workqueue: mtk-vcodec-enc mtk_venc_worker [mtk_vcodec_enc]
[  638.137974] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[  638.144925] pc : vp8_enc_encode+0x34/0x2b0 [mtk_vcodec_enc]
[  638.150493] lr : venc_if_encode+0xac/0x1b0 [mtk_vcodec_enc]
[  638.156060] sp : ffff8000124d3c40
[  638.159364] x29: ffff8000124d3c40 x28: 0000000000000000 x27: 0000000000000000
[  638.166493] x26: 0000000000000000 x25: ffff0000e7f252d0 x24: ffff8000124d3d58
[  638.173621] x23: ffff8000124d3d58 x22: ffff8000124d3d60 x21: 0000000000000001
[  638.180750] x20: ffff80001137e000 x19: 0000000000000000 x18: 0000000000000001
[  638.187878] x17: 000000040044ffff x16: 00400032b5503510 x15: 0000000000000000
[  638.195006] x14: ffff8000118536c0 x13: ffff8000ee1da000 x12: 0000000030d4d91d
[  638.202134] x11: 0000000000000000 x10: 0000000000000980 x9 : ffff8000124d3b20
[  638.209262] x8 : ffff0000c18d4ea0 x7 : ffff0000c18d44c0 x6 : ffff0000c18d44c0
[  638.216391] x5 : ffff80000904a3b0 x4 : ffff8000124d3d58 x3 : ffff8000124d3d60
[  638.223519] x2 : ffff8000124d3d78 x1 : 0000000000000001 x0 : ffff80001137efb8
[  638.230648] Call trace:
[  638.233084]  vp8_enc_encode+0x34/0x2b0 [mtk_vcodec_enc]
[  638.238304]  venc_if_encode+0xac/0x1b0 [mtk_vcodec_enc]
[  638.243525]  mtk_venc_worker+0x110/0x250 [mtk_vcodec_enc]
[  638.248918]  process_one_work+0x1f8/0x498
[  638.252923]  worker_thread+0x140/0x538
[  638.256664]  kthread+0x148/0x158
[  638.259884]  ret_from_fork+0x10/0x20
[  638.263455] Code: f90023f9 2a0103f5 aa0303f6 aa0403f8 (f940d277)
[  638.269538] ---[ end trace e374fc10f8e181f5 ]---

[gst-master] root@debian:~/gst-build# [ 638.019193] Unable to handle kernel NULL pointer dereference at virtual address 00000000000001a0

Fixes 4e855a6efa547 ("[media] vcodec: mediatek: Add Mediatek V4L2 Video Encoder Driver")
---
 drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c +1 -1
index 83f859e8509c9..b95006a864c26 100644
@@ -217,11 +217,11 @@ static int fops_vcodec_release(struct file *file)
 	mtk_v4l2_debug(1, "[%d] encoder", ctx->id);
 	mutex_lock(&dev->dev_mutex);
 
+	v4l2_m2m_ctx_release(ctx->m2m_ctx);
 	mtk_vcodec_enc_release(ctx);
 	v4l2_fh_del(&ctx->fh);
 	v4l2_fh_exit(&ctx->fh);
 	v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
-	v4l2_m2m_ctx_release(ctx->m2m_ctx);
 
 	list_del_init(&ctx->list);
 	kfree(ctx);
Signature · 1 line
2.34.1
author maintainer
#44 lore raw

PATCH 44/186 netfilter: bridge: add support for pppoe filtering

In reply to Greg Kroah-Hartman

From: Florian Westphal <[email protected]>

[ Upstream commit 28b78ecffea8078d81466b2e01bb5a154509f1ba ]

This makes 'bridge-nf-filter-pppoe-tagged' sysctl work for bridged traffic.

Looking at the original commit it doesn't appear this ever worked:

static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
[..]

        if (skb->protocol == htons(ETH_P_8021Q)) {
                skb_pull(skb, VLAN_HLEN);
                skb->network_header += VLAN_HLEN;
+       } else if (skb->protocol == htons(ETH_P_PPP_SES)) {
+               skb_pull(skb, PPPOE_SES_HLEN);
+               skb->network_header += PPPOE_SES_HLEN;
        }
 [..]
	NF_HOOK(... POST_ROUTING, ...)

... but the adjusted offsets are never restored.

The alternative would be to rip this code out for good, but otoh we'd have to keep this anyway for the vlan handling (which works because vlan tag info is in the skb, not the packet
payload).

Reported-and-tested-by Amish Chana <[email protected]>
Fixes 516299d2f5b6f97 ("[NETFILTER]: bridge-nf: filter bridged IPv4/IPv6 encapsulated in pppoe traffic")
---
 net/bridge/br_netfilter_hooks.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
net/bridge/br_netfilter_hooks.c +3 -4
index 8155c3d811a14..7e50bd9f36112 100644
@@ -724,6 +724,9 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
 	if (nf_bridge->frag_max_size && nf_bridge->frag_max_size < mtu)
 		mtu = nf_bridge->frag_max_size;
 
+	nf_bridge_update_protocol(skb);
+	nf_bridge_push_encap_header(skb);
+
 	if (skb_is_gso(skb) || skb->len + mtu_reserved <= mtu) {
 		nf_bridge_info_free(skb);
 		return br_dev_queue_push_xmit(net, sk, skb);
@@ -741,8 +744,6 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
 
 		IPCB(skb)->frag_max_size = nf_bridge->frag_max_size;
 
-		nf_bridge_update_protocol(skb);
-
 		data = this_cpu_ptr(&brnf_frag_data_storage);
 
 		data->vlan_tci = skb->vlan_tci;
@@ -765,8 +766,6 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
 
 		IP6CB(skb)->frag_max_size = nf_bridge->frag_max_size;
 
-		nf_bridge_update_protocol(skb);
-
 		data = this_cpu_ptr(&brnf_frag_data_storage);
 		data->encap_size = nf_bridge_encap_header_len(skb);
 		data->size = ETH_HLEN + data->encap_size;
Signature · 1 line
2.34.1
author maintainer
#45 lore raw

PATCH 45/186 arm64: dts: qcom: msm8916: fix MMC controller aliases

In reply to Greg Kroah-Hartman

From: Dmitry Baryshkov <[email protected]>

[ Upstream commit b0293c19d42f6d6951c2fab9a47fed50baf2c14d ]

Change sdhcN aliases to mmcN to make them actually work. Currently the board uses non-standard aliases sdhcN, which do not work, resulting in mmc0 and mmc1 hosts randomly changing indices between boots.

Fixes c4da5a561627 ("arm64: dts: qcom: Add msm8916 sdhci configuration nodes")
---
 arch/arm64/boot/dts/qcom/msm8916.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
arch/arm64/boot/dts/qcom/msm8916.dtsi +2 -2
index 94697bab3805f..a961b81060004 100644
@@ -26,8 +26,8 @@
 	#size-cells = <2>;
 
 	aliases {
-		sdhc1 = &sdhc_1; /* SDC1 eMMC slot */
-		sdhc2 = &sdhc_2; /* SDC2 SD card slot */
+		mmc0 = &sdhc_1; /* SDC1 eMMC slot */
+		mmc1 = &sdhc_2; /* SDC2 SD card slot */
 	};
 
 	chosen { };
Signature · 1 line
2.34.1
author maintainer
#46 lore raw

PATCH 46/186 drm/amdgpu: Fix a NULL pointer dereference in amdgpu_connector_lcd_native_mode()

In reply to Greg Kroah-Hartman

From: Zhou Qingyang <[email protected]>

[ Upstream commit b220110e4cd442156f36e1d9b4914bb9e87b0d00 ]

In amdgpu_connector_lcd_native_mode(), the return value of drm_mode_duplicate() is assigned to mode, and there is a dereference of it in amdgpu_connector_lcd_native_mode(), which will lead to a NULL pointer dereference on failure of drm_mode_duplicate().

Fix this bug add a check of mode.

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_DRM_AMDGPU=m show no new warnings, and our static analyzer no longer warns about this code.

Fixes d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)")
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 6 ++++++
 1 file changed, 6 insertions(+)
drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c +6 -0
index 54f414279037e..0894bb98dc517 100644
@@ -404,6 +404,9 @@ amdgpu_connector_lcd_native_mode(struct drm_encoder *encoder)
 	    native_mode->vdisplay != 0 &&
 	    native_mode->clock != 0) {
 		mode = drm_mode_duplicate(dev, native_mode);
+		if (!mode)
+			return NULL;
+
 		mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
 		drm_mode_set_name(mode);
 
@@ -418,6 +421,9 @@ amdgpu_connector_lcd_native_mode(struct drm_encoder *encoder)
 		 * simpler.
 		 */
 		mode = drm_cvt_mode(dev, native_mode->hdisplay, native_mode->vdisplay, 60, true, false, false);
+		if (!mode)
+			return NULL;
+
 		mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
 		DRM_DEBUG_KMS("Adding cvt approximation of native panel mode %s\n", mode->name);
 	}
Signature · 1 line
2.34.1
author maintainer
#47 lore raw

PATCH 47/186 drm/radeon/radeon_kms: Fix a NULL pointer dereference in radeon_driver_open_kms()

In reply to Greg Kroah-Hartman

From: Zhou Qingyang <[email protected]>

[ Upstream commit ab50cb9df8896b39aae65c537a30de2c79c19735 ]

In radeon_driver_open_kms(), radeon_vm_bo_add() is assigned to vm->ib_bo_va and passes and used in radeon_vm_bo_set_addr(). In radeon_vm_bo_set_addr(), there is a dereference of vm->ib_bo_va, which could lead to a NULL pointer dereference on failure of radeon_vm_bo_add().

Fix this bug by adding a check of vm->ib_bo_va.

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_DRM_RADEON=m show no new warnings, and our static analyzer no longer warns about this code.

Fixes cc9e67e3d700 ("drm/radeon: fix VM IB handling")
---
 drivers/gpu/drm/radeon/radeon_kms.c | 36 ++++++++++++++++-------------
 1 file changed, 20 insertions(+), 16 deletions(-)
drivers/gpu/drm/radeon/radeon_kms.c +20 -16
index 4973bd241aec3..fb292b9f3d402 100644
@@ -655,6 +655,8 @@ void radeon_driver_lastclose_kms(struct drm_device *dev)
 int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 {
 	struct radeon_device *rdev = dev->dev_private;
+	struct radeon_fpriv *fpriv;
+	struct radeon_vm *vm;
 	int r;
 
 	file_priv->driver_priv = NULL;
@@ -667,8 +669,6 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 
 	/* new gpu have virtual address space support */
 	if (rdev->family >= CHIP_CAYMAN) {
-		struct radeon_fpriv *fpriv;
-		struct radeon_vm *vm;
 
 		fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
 		if (unlikely(!fpriv)) {
@@ -679,35 +679,39 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 		if (rdev->accel_working) {
 			vm = &fpriv->vm;
 			r = radeon_vm_init(rdev, vm);
-			if (r) {
-				kfree(fpriv);
-				goto out_suspend;
-			}
+			if (r)
+				goto out_fpriv;
 
 			r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
-			if (r) {
-				radeon_vm_fini(rdev, vm);
-				kfree(fpriv);
-				goto out_suspend;
-			}
+			if (r)
+				goto out_vm_fini;
 
 			/* map the ib pool buffer read only into
 			 * virtual address space */
 			vm->ib_bo_va = radeon_vm_bo_add(rdev, vm,
 							rdev->ring_tmp_bo.bo);
+			if (!vm->ib_bo_va) {
+				r = -ENOMEM;
+				goto out_vm_fini;
+			}
+
 			r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
 						  RADEON_VA_IB_OFFSET,
 						  RADEON_VM_PAGE_READABLE |
 						  RADEON_VM_PAGE_SNOOPED);
-			if (r) {
-				radeon_vm_fini(rdev, vm);
-				kfree(fpriv);
-				goto out_suspend;
-			}
+			if (r)
+				goto out_vm_fini;
 		}
 		file_priv->driver_priv = fpriv;
 	}
 
+	if (!r)
+		goto out_suspend;
+
+out_vm_fini:
+	radeon_vm_fini(rdev, vm);
+out_fpriv:
+	kfree(fpriv);
 out_suspend:
 	pm_runtime_mark_last_busy(dev->dev);
 	pm_runtime_put_autosuspend(dev->dev);
Signature · 1 line
2.34.1
author maintainer
#48 lore raw

PATCH 48/186 serial: amba-pl011: do not request memory region twice

In reply to Greg Kroah-Hartman

From: Lino Sanfilippo <[email protected]>

[ Upstream commit d1180405c7b5c7a1c6bde79d5fc24fe931430737 ]

With commit 3873e2d7f63a ("drivers: PL011: refactor pl011_probe()") the function devm_ioremap() called from pl011_setup_port() was replaced with devm_ioremap_resource(). Since this function not only remaps but also requests the ports io memory region it now collides with the .config_port() callback which requests the same region at uart port registration.

Since devm_ioremap_resource() already claims the memory successfully, the request in .config_port() fails.

Later at uart port deregistration the attempt to release the unclaimed memory also fails. The failure results in a “Trying to free nonexistent resource" warning.

Fix these issues by removing the callbacks that implement the redundant memory allocation/release. Also make sure that changing the drivers io memory base address via TIOCSSERIAL is not allowed any more.

Fixes 3873e2d7f63a ("drivers: PL011: refactor pl011_probe()")
---
 drivers/tty/serial/amba-pl011.c | 27 +++------------------------
 1 file changed, 3 insertions(+), 24 deletions(-)
drivers/tty/serial/amba-pl011.c +3 -24
index dcf84d5020c65..a9aa8cd7f29c8 100644
@@ -2111,32 +2111,13 @@ static const char *pl011_type(struct uart_port *port)
 	return uap->port.type == PORT_AMBA ? uap->type : NULL;
 }
 
-/*
- * Release the memory region(s) being used by 'port'
- */
-static void pl011_release_port(struct uart_port *port)
-{
-	release_mem_region(port->mapbase, SZ_4K);
-}
-
-/*
- * Request the memory region(s) being used by 'port'
- */
-static int pl011_request_port(struct uart_port *port)
-{
-	return request_mem_region(port->mapbase, SZ_4K, "uart-pl011")
-			!= NULL ? 0 : -EBUSY;
-}
-
 /*
  * Configure/autoconfigure the port.
  */
 static void pl011_config_port(struct uart_port *port, int flags)
 {
-	if (flags & UART_CONFIG_TYPE) {
+	if (flags & UART_CONFIG_TYPE)
 		port->type = PORT_AMBA;
-		pl011_request_port(port);
-	}
 }
 
 /*
@@ -2151,6 +2132,8 @@ static int pl011_verify_port(struct uart_port *port, struct serial_struct *ser)
 		ret = -EINVAL;
 	if (ser->baud_base < 9600)
 		ret = -EINVAL;
+	if (port->mapbase != (unsigned long) ser->iomem_base)
+		ret = -EINVAL;
 	return ret;
 }
 
@@ -2168,8 +2151,6 @@ static const struct uart_ops amba_pl011_pops = {
 	.flush_buffer	= pl011_dma_flush_buffer,
 	.set_termios	= pl011_set_termios,
 	.type		= pl011_type,
-	.release_port	= pl011_release_port,
-	.request_port	= pl011_request_port,
 	.config_port	= pl011_config_port,
 	.verify_port	= pl011_verify_port,
 #ifdef CONFIG_CONSOLE_POLL
@@ -2199,8 +2180,6 @@ static const struct uart_ops sbsa_uart_pops = {
 	.shutdown	= sbsa_uart_shutdown,
 	.set_termios	= sbsa_uart_set_termios,
 	.type		= pl011_type,
-	.release_port	= pl011_release_port,
-	.request_port	= pl011_request_port,
 	.config_port	= pl011_config_port,
 	.verify_port	= pl011_verify_port,
 #ifdef CONFIG_CONSOLE_POLL
Signature · 1 line
2.34.1
author maintainer
#49 lore raw

PATCH 49/186 floppy: Fix hang in watchdog when disk is ejected

In reply to Greg Kroah-Hartman

From: Tasos Sahanidis <[email protected]>

[ Upstream commit fb48febce7e30baed94dd791e19521abd2c3fd83 ]

When the watchdog detects a disk change, it calls cancel_activity(), which in turn tries to cancel the fd_timer delayed work.

In the above scenario, fd_timer_fn is set to fd_watchdog(), meaning it is trying to cancel its own work.
This results in a hang as cancel_delayed_work_sync() is waiting for the watchdog (itself) to return, which never happens.

This can be reproduced relatively consistently by attempting to read a broken floppy, and ejecting it while IO is being attempted and retried.

To resolve this, this patch calls cancel_delayed_work() instead, which cancels the work without waiting for the watchdog to return and finish.

Before this regression was introduced, the code in this section used del_timer(), and not del_timer_sync() to delete the watchdog timer.

Fixes 070ad7e793dc ("floppy: convert to delayed work and single-thread wq")
---
 drivers/block/floppy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/block/floppy.c +1 -1
index cbf74731cfce6..b6c99cf1ce745 100644
@@ -994,7 +994,7 @@ static DECLARE_DELAYED_WORK(fd_timer, fd_timer_workfn);
 static void cancel_activity(void)
 {
 	do_floppy = NULL;
-	cancel_delayed_work_sync(&fd_timer);
+	cancel_delayed_work(&fd_timer);
 	cancel_work_sync(&floppy_work);
 }
 
Signature · 1 line
2.34.1
author maintainer
#50 lore raw

PATCH 50/186 media: dib8000: Fix a memleak in dib8000_init()

In reply to Greg Kroah-Hartman

From: Zhou Qingyang <[email protected]>

[ Upstream commit 8dbdcc7269a83305ee9d677b75064d3530a48ee2 ]

In dib8000_init(), the variable fe is not freed or passed out on the failure of dib8000_identify(&state->i2c), which could lead to a memleak.

Fix this bug by adding a kfree of fe in the error path.

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_DVB_DIB8000=m show no new warnings, and our static analyzer no longer warns about this code.

Fixes 77e2c0f5d471 ("V4L/DVB (12900): DiB8000: added support for DiBcom ISDB-T/ISDB-Tsb demodulator DiB8000")
---
 drivers/media/dvb-frontends/dib8000.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
drivers/media/dvb-frontends/dib8000.c +3 -1
index 59ab01dc62b19..c429392ebbe63 100644
@@ -4476,8 +4476,10 @@ static struct dvb_frontend *dib8000_init(struct i2c_adapter *i2c_adap, u8 i2c_ad
 
 	state->timf_default = cfg->pll->timf;
 
-	if (dib8000_identify(&state->i2c) == 0)
+	if (dib8000_identify(&state->i2c) == 0) {
+		kfree(fe);
 		goto error;
+	}
 
 	dibx000_init_i2c_master(&state->i2c_master, DIB8000, state->i2c.adap, state->i2c.addr);
 
Signature · 1 line
2.34.1
author maintainer
#51 lore raw

PATCH 51/186 media: saa7146: mxb: Fix a NULL pointer dereference in mxb_attach()

In reply to Greg Kroah-Hartman

From: Zhou Qingyang <[email protected]>

[ Upstream commit 0407c49ebe330333478440157c640fffd986f41b ]

In mxb_attach(dev, info), saa7146_vv_init() is called to allocate a new memory for dev->vv_data. saa7146_vv_release() will be called on failure of mxb_probe(dev). There is a dereference of dev->vv_data in saa7146_vv_release(), which could lead to a NULL pointer dereference on failure of saa7146_vv_init().

Fix this bug by adding a check of saa7146_vv_init().

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_VIDEO_MXB=m show no new warnings, and our static analyzer no longer warns about this code.

Fixes 03b1930efd3c ("V4L/DVB: saa7146: fix regression of the av7110/budget-av driver")
---
 drivers/media/pci/saa7146/mxb.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
drivers/media/pci/saa7146/mxb.c +7 -1
index 2e7bd82282caa..b2260deab94cc 100644
@@ -694,10 +694,16 @@ static struct saa7146_ext_vv vv_data;
 static int mxb_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
 {
 	struct mxb *mxb;
+	int ret;
 
 	DEB_EE("dev:%p\n", dev);
 
-	saa7146_vv_init(dev, &vv_data);
+	ret = saa7146_vv_init(dev, &vv_data);
+	if (ret) {
+		ERR("Error in saa7146_vv_init()");
+		return ret;
+	}
+
 	if (mxb_probe(dev)) {
 		saa7146_vv_release(dev);
 		return -1;
Signature · 1 line
2.34.1
author maintainer
#52 lore raw

PATCH 52/186 media: si2157: Fix "warm" tuner state detection

In reply to Greg Kroah-Hartman

From: Robert Schlabbach <[email protected]>

[ Upstream commit a6441ea29cb2c9314654e093a1cd8020b9b851c8 ]

Commit e955f959ac52 ("media: si2157: Better check for running tuner in init") completely broke the "warm" tuner detection of the si2157 driver due to a simple endian error: The Si2157 CRYSTAL_TRIM property code is 0x0402 and needs to be transmitted LSB first. However, it was inserted MSB first, causing the warm detection to always fail and spam the kernel log with tuner initialization messages each time the DVB frontend device was closed and reopened:

[  312.215682] si2157 16-0060: found a 'Silicon Labs Si2157-A30'
[  312.264334] si2157 16-0060: firmware version: 3.0.5
[  342.248593] si2157 16-0060: found a 'Silicon Labs Si2157-A30'
[  342.295743] si2157 16-0060: firmware version: 3.0.5
[  372.328574] si2157 16-0060: found a 'Silicon Labs Si2157-A30'
[  372.385035] si2157 16-0060: firmware version: 3.0.5

Also, the reinitializations were observed disturb _other_ tuners on multi-tuner cards such as the Hauppauge WinTV-QuadHD, leading to missed or errored packets when one of the other DVB frontend devices on that card was opened.

Fix the order of the property code bytes to make the warm detection work again, also reducing the tuner initialization message in the kernel log to once per power-on, as well as fixing the interference with other tuners.

Fixes e955f959ac52 ("media: si2157: Better check for running tuner in init")
---
 drivers/media/tuners/si2157.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/media/tuners/si2157.c +1 -1
index c826997f54330..229fea019e99e 100644
@@ -89,7 +89,7 @@ static int si2157_init(struct dvb_frontend *fe)
 	dev_dbg(&client->dev, "\n");
 
 	/* Try to get Xtal trim property, to verify tuner still running */
-	memcpy(cmd.args, "\x15\x00\x04\x02", 4);
+	memcpy(cmd.args, "\x15\x00\x02\x04", 4);
 	cmd.wlen = 4;
 	cmd.rlen = 4;
 	ret = si2157_cmd_execute(client, &cmd);
Signature · 1 line
2.34.1
author maintainer
#53 lore raw

PATCH 53/186 sched/rt: Try to restart rt period timer when rt runtime exceeded

In reply to Greg Kroah-Hartman

From: Li Hua <[email protected]>

[ Upstream commit 9b58e976b3b391c0cf02e038d53dd0478ed3013c ]

When rt_runtime is modified from -1 to a valid control value, it may cause the task to be throttled all the time. Operations like the following will trigger the bug. E.g:

1. echo -1 > /proc/sys/kernel/sched_rt_runtime_us
2. Run a FIFO task named A that executes while(1)
3. echo 950000 > /proc/sys/kernel/sched_rt_runtime_us

When rt_runtime is -1, The rt period timer will not be activated when task A enqueued. And then the task will be throttled after setting rt_runtime to 950,000. The task will always be throttled because the rt period timer is not activated.

Fixes d0b27fa77854 ("sched: rt-group: synchonised bandwidth period")
---
 kernel/sched/rt.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)
kernel/sched/rt.c +18 -5
index cc7dd1aaf08e3..c093bb0f52eb1 100644
@@ -52,11 +52,8 @@ void init_rt_bandwidth(struct rt_bandwidth *rt_b, u64 period, u64 runtime)
 	rt_b->rt_period_timer.function = sched_rt_period_timer;
 }
 
-static void start_rt_bandwidth(struct rt_bandwidth *rt_b)
+static inline void do_start_rt_bandwidth(struct rt_bandwidth *rt_b)
 {
-	if (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF)
-		return;
-
 	raw_spin_lock(&rt_b->rt_runtime_lock);
 	if (!rt_b->rt_period_active) {
 		rt_b->rt_period_active = 1;
@@ -74,6 +71,14 @@ static void start_rt_bandwidth(struct rt_bandwidth *rt_b)
 	raw_spin_unlock(&rt_b->rt_runtime_lock);
 }
 
+static void start_rt_bandwidth(struct rt_bandwidth *rt_b)
+{
+	if (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF)
+		return;
+
+	do_start_rt_bandwidth(rt_b);
+}
+
 void init_rt_rq(struct rt_rq *rt_rq)
 {
 	struct rt_prio_array *array;
@@ -982,13 +987,17 @@ static void update_curr_rt(struct rq *rq)
 
 	for_each_sched_rt_entity(rt_se) {
 		struct rt_rq *rt_rq = rt_rq_of_se(rt_se);
+		int exceeded;
 
 		if (sched_rt_runtime(rt_rq) != RUNTIME_INF) {
 			raw_spin_lock(&rt_rq->rt_runtime_lock);
 			rt_rq->rt_time += delta_exec;
-			if (sched_rt_runtime_exceeded(rt_rq))
+			exceeded = sched_rt_runtime_exceeded(rt_rq);
+			if (exceeded)
 				resched_curr(rq);
 			raw_spin_unlock(&rt_rq->rt_runtime_lock);
+			if (exceeded)
+				do_start_rt_bandwidth(sched_rt_bandwidth(rt_rq));
 		}
 	}
 }
@@ -2629,8 +2638,12 @@ static int sched_rt_global_validate(void)
 
 static void sched_rt_do_global(void)
 {
+	unsigned long flags;
+
+	raw_spin_lock_irqsave(&def_rt_bandwidth.rt_runtime_lock, flags);
 	def_rt_bandwidth.rt_runtime = global_rt_runtime();
 	def_rt_bandwidth.rt_period = ns_to_ktime(global_rt_period());
+	raw_spin_unlock_irqrestore(&def_rt_bandwidth.rt_runtime_lock, flags);
 }
 
 int sched_rt_handler(struct ctl_table *table, int write,
Signature · 1 line
2.34.1
author maintainer
#54 lore raw

PATCH 54/186 media: dw2102: Fix use after free

In reply to Greg Kroah-Hartman

From: Anton Vasilyev <[email protected]>

[ Upstream commit 589a9f0eb799f77de2c09583bf5bad221fa5d685 ]

dvb_usb_device_init stores parts of properties at d->props and d->desc and uses it on dvb_usb_device_exit. Free of properties on module probe leads to use after free.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204597

The patch makes properties static instead of allocated on heap to prevent memleak and use after free.
Also fixes s421_properties.devices initialization to have 2 element instead of 6 copied from p7500_properties.

[mchehab: fix function call alignments]
Fixes 299c7007e936 ("media: dw2102: Fix memleak on sequence of probes")
---
 drivers/media/usb/dvb-usb/dw2102.c | 338 ++++++++++++++++++-----------
 1 file changed, 215 insertions(+), 123 deletions(-)
drivers/media/usb/dvb-usb/dw2102.c +215 -123
index 3d09e1c879217..98770a95721b9 100644
@@ -2103,46 +2103,153 @@ static struct dvb_usb_device_properties s6x0_properties = {
 	}
 };
 
-static const struct dvb_usb_device_description d1100 = {
-	"Prof 1100 USB ",
-	{&dw2102_table[PROF_1100], NULL},
-	{NULL},
-};
+static struct dvb_usb_device_properties p1100_properties = {
+	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
+	.usb_ctrl = DEVICE_SPECIFIC,
+	.size_of_priv = sizeof(struct dw2102_state),
+	.firmware = P1100_FIRMWARE,
+	.no_reconnect = 1,
 
-static const struct dvb_usb_device_description d660 = {
-	"TeVii S660 USB",
-	{&dw2102_table[TEVII_S660], NULL},
-	{NULL},
-};
+	.i2c_algo = &s6x0_i2c_algo,
+	.rc.core = {
+		.rc_interval = 150,
+		.rc_codes = RC_MAP_TBS_NEC,
+		.module_name = "dw2102",
+		.allowed_protos   = RC_PROTO_BIT_NEC,
+		.rc_query = prof_rc_query,
+	},
 
-static const struct dvb_usb_device_description d480_1 = {
-	"TeVii S480.1 USB",
-	{&dw2102_table[TEVII_S480_1], NULL},
-	{NULL},
+	.generic_bulk_ctrl_endpoint = 0x81,
+	.num_adapters = 1,
+	.download_firmware = dw2102_load_firmware,
+	.read_mac_address = s6x0_read_mac_address,
+	.adapter = {
+		{
+			.num_frontends = 1,
+			.fe = {{
+				.frontend_attach = stv0288_frontend_attach,
+				.stream = {
+					.type = USB_BULK,
+					.count = 8,
+					.endpoint = 0x82,
+					.u = {
+						.bulk = {
+							.buffersize = 4096,
+						}
+					}
+				},
+			} },
+		}
+	},
+	.num_device_descs = 1,
+	.devices = {
+		{"Prof 1100 USB ",
+			{&dw2102_table[PROF_1100], NULL},
+			{NULL},
+		},
+	}
 };
 
-static const struct dvb_usb_device_description d480_2 = {
-	"TeVii S480.2 USB",
-	{&dw2102_table[TEVII_S480_2], NULL},
-	{NULL},
-};
+static struct dvb_usb_device_properties s660_properties = {
+	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
+	.usb_ctrl = DEVICE_SPECIFIC,
+	.size_of_priv = sizeof(struct dw2102_state),
+	.firmware = S660_FIRMWARE,
+	.no_reconnect = 1,
 
-static const struct dvb_usb_device_description d7500 = {
-	"Prof 7500 USB DVB-S2",
-	{&dw2102_table[PROF_7500], NULL},
-	{NULL},
-};
+	.i2c_algo = &s6x0_i2c_algo,
+	.rc.core = {
+		.rc_interval = 150,
+		.rc_codes = RC_MAP_TEVII_NEC,
+		.module_name = "dw2102",
+		.allowed_protos   = RC_PROTO_BIT_NEC,
+		.rc_query = dw2102_rc_query,
+	},
 
-static const struct dvb_usb_device_description d421 = {
-	"TeVii S421 PCI",
-	{&dw2102_table[TEVII_S421], NULL},
-	{NULL},
+	.generic_bulk_ctrl_endpoint = 0x81,
+	.num_adapters = 1,
+	.download_firmware = dw2102_load_firmware,
+	.read_mac_address = s6x0_read_mac_address,
+	.adapter = {
+		{
+			.num_frontends = 1,
+			.fe = {{
+				.frontend_attach = ds3000_frontend_attach,
+				.stream = {
+					.type = USB_BULK,
+					.count = 8,
+					.endpoint = 0x82,
+					.u = {
+						.bulk = {
+							.buffersize = 4096,
+						}
+					}
+				},
+			} },
+		}
+	},
+	.num_device_descs = 3,
+	.devices = {
+		{"TeVii S660 USB",
+			{&dw2102_table[TEVII_S660], NULL},
+			{NULL},
+		},
+		{"TeVii S480.1 USB",
+			{&dw2102_table[TEVII_S480_1], NULL},
+			{NULL},
+		},
+		{"TeVii S480.2 USB",
+			{&dw2102_table[TEVII_S480_2], NULL},
+			{NULL},
+		},
+	}
 };
 
-static const struct dvb_usb_device_description d632 = {
-	"TeVii S632 USB",
-	{&dw2102_table[TEVII_S632], NULL},
-	{NULL},
+static struct dvb_usb_device_properties p7500_properties = {
+	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
+	.usb_ctrl = DEVICE_SPECIFIC,
+	.size_of_priv = sizeof(struct dw2102_state),
+	.firmware = P7500_FIRMWARE,
+	.no_reconnect = 1,
+
+	.i2c_algo = &s6x0_i2c_algo,
+	.rc.core = {
+		.rc_interval = 150,
+		.rc_codes = RC_MAP_TBS_NEC,
+		.module_name = "dw2102",
+		.allowed_protos   = RC_PROTO_BIT_NEC,
+		.rc_query = prof_rc_query,
+	},
+
+	.generic_bulk_ctrl_endpoint = 0x81,
+	.num_adapters = 1,
+	.download_firmware = dw2102_load_firmware,
+	.read_mac_address = s6x0_read_mac_address,
+	.adapter = {
+		{
+			.num_frontends = 1,
+			.fe = {{
+				.frontend_attach = prof_7500_frontend_attach,
+				.stream = {
+					.type = USB_BULK,
+					.count = 8,
+					.endpoint = 0x82,
+					.u = {
+						.bulk = {
+							.buffersize = 4096,
+						}
+					}
+				},
+			} },
+		}
+	},
+	.num_device_descs = 1,
+	.devices = {
+		{"Prof 7500 USB DVB-S2",
+			{&dw2102_table[PROF_7500], NULL},
+			{NULL},
+		},
+	}
 };
 
 static struct dvb_usb_device_properties su3000_properties = {
@@ -2214,6 +2321,59 @@ static struct dvb_usb_device_properties su3000_properties = {
 	}
 };
 
+static struct dvb_usb_device_properties s421_properties = {
+	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
+	.usb_ctrl = DEVICE_SPECIFIC,
+	.size_of_priv = sizeof(struct dw2102_state),
+	.power_ctrl = su3000_power_ctrl,
+	.num_adapters = 1,
+	.identify_state	= su3000_identify_state,
+	.i2c_algo = &su3000_i2c_algo,
+
+	.rc.core = {
+		.rc_interval = 150,
+		.rc_codes = RC_MAP_SU3000,
+		.module_name = "dw2102",
+		.allowed_protos   = RC_PROTO_BIT_RC5,
+		.rc_query = su3000_rc_query,
+	},
+
+	.read_mac_address = su3000_read_mac_address,
+
+	.generic_bulk_ctrl_endpoint = 0x01,
+
+	.adapter = {
+		{
+		.num_frontends = 1,
+		.fe = {{
+			.streaming_ctrl   = su3000_streaming_ctrl,
+			.frontend_attach  = m88rs2000_frontend_attach,
+			.stream = {
+				.type = USB_BULK,
+				.count = 8,
+				.endpoint = 0x82,
+				.u = {
+					.bulk = {
+						.buffersize = 4096,
+					}
+				}
+			}
+		} },
+		}
+	},
+	.num_device_descs = 2,
+	.devices = {
+		{ "TeVii S421 PCI",
+			{ &dw2102_table[TEVII_S421], NULL },
+			{ NULL },
+		},
+		{ "TeVii S632 USB",
+			{ &dw2102_table[TEVII_S632], NULL },
+			{ NULL },
+		},
+	}
+};
+
 static struct dvb_usb_device_properties t220_properties = {
 	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
 	.usb_ctrl = DEVICE_SPECIFIC,
@@ -2331,101 +2491,33 @@ static struct dvb_usb_device_properties tt_s2_4600_properties = {
 static int dw2102_probe(struct usb_interface *intf,
 		const struct usb_device_id *id)
 {
-	int retval = -ENOMEM;
-	struct dvb_usb_device_properties *p1100;
-	struct dvb_usb_device_properties *s660;
-	struct dvb_usb_device_properties *p7500;
-	struct dvb_usb_device_properties *s421;
-
-	p1100 = kmemdup(&s6x0_properties,
-			sizeof(struct dvb_usb_device_properties), GFP_KERNEL);
-	if (!p1100)
-		goto err0;
-
-	/* copy default structure */
-	/* fill only different fields */
-	p1100->firmware = P1100_FIRMWARE;
-	p1100->devices[0] = d1100;
-	p1100->rc.core.rc_query = prof_rc_query;
-	p1100->rc.core.rc_codes = RC_MAP_TBS_NEC;
-	p1100->adapter->fe[0].frontend_attach = stv0288_frontend_attach;
-
-	s660 = kmemdup(&s6x0_properties,
-		       sizeof(struct dvb_usb_device_properties), GFP_KERNEL);
-	if (!s660)
-		goto err1;
-
-	s660->firmware = S660_FIRMWARE;
-	s660->num_device_descs = 3;
-	s660->devices[0] = d660;
-	s660->devices[1] = d480_1;
-	s660->devices[2] = d480_2;
-	s660->adapter->fe[0].frontend_attach = ds3000_frontend_attach;
-
-	p7500 = kmemdup(&s6x0_properties,
-			sizeof(struct dvb_usb_device_properties), GFP_KERNEL);
-	if (!p7500)
-		goto err2;
-
-	p7500->firmware = P7500_FIRMWARE;
-	p7500->devices[0] = d7500;
-	p7500->rc.core.rc_query = prof_rc_query;
-	p7500->rc.core.rc_codes = RC_MAP_TBS_NEC;
-	p7500->adapter->fe[0].frontend_attach = prof_7500_frontend_attach;
-
-
-	s421 = kmemdup(&su3000_properties,
-		       sizeof(struct dvb_usb_device_properties), GFP_KERNEL);
-	if (!s421)
-		goto err3;
-
-	s421->num_device_descs = 2;
-	s421->devices[0] = d421;
-	s421->devices[1] = d632;
-	s421->adapter->fe[0].frontend_attach = m88rs2000_frontend_attach;
-
-	if (0 == dvb_usb_device_init(intf, &dw2102_properties,
-			THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, &dw2104_properties,
-			THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, &dw3101_properties,
-			THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, &s6x0_properties,
-			THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, p1100,
-			THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, s660,
-			THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, p7500,
-			THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, s421,
-			THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, &su3000_properties,
-			 THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, &t220_properties,
-			 THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, &tt_s2_4600_properties,
-			 THIS_MODULE, NULL, adapter_nr)) {
-
-		/* clean up copied properties */
-		kfree(s421);
-		kfree(p7500);
-		kfree(s660);
-		kfree(p1100);
+	if (!(dvb_usb_device_init(intf, &dw2102_properties,
+			          THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &dw2104_properties,
+				  THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &dw3101_properties,
+			          THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &s6x0_properties,
+			          THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &p1100_properties,
+			          THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &s660_properties,
+				  THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &p7500_properties,
+				  THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &s421_properties,
+				  THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &su3000_properties,
+				  THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &t220_properties,
+				  THIS_MODULE, NULL, adapter_nr) &&
+	      dvb_usb_device_init(intf, &tt_s2_4600_properties,
+				  THIS_MODULE, NULL, adapter_nr))) {
 
 		return 0;
 	}
 
-	retval = -ENODEV;
-	kfree(s421);
-err3:
-	kfree(p7500);
-err2:
-	kfree(s660);
-err1:
-	kfree(p1100);
-err0:
-	return retval;
+	return -ENODEV;
 }
 
 static void dw2102_disconnect(struct usb_interface *intf)
Signature · 1 line
2.34.1
author maintainer
#55 lore raw

PATCH 55/186 media: msi001: fix possible null-ptr-deref in msi001_probe()

In reply to Greg Kroah-Hartman

From: Wang Hai <[email protected]>

[ Upstream commit 3d5831a40d3464eea158180eb12cbd81c5edfb6a ]

I got a null-ptr-deref report:

BUG: kernel NULL pointer dereference, address: 0000000000000060
...
RIP: 0010:v4l2_ctrl_auto_cluster+0x57/0x270
...
Call Trace:
 msi001_probe+0x13b/0x24b [msi001]
 spi_probe+0xeb/0x130

...
do_syscall_64+0x35/0xb0

In msi001_probe(), if the creation of control for bandwidth_auto fails, there will be a null-ptr-deref issue when it is used in v4l2_ctrl_auto_cluster().

Check dev->hdl.error before v4l2_ctrl_auto_cluster() to fix this bug.

Fixes 93203dd6c7c4 ("[media] msi001: Mirics MSi001 silicon tuner driver")
---
 drivers/media/tuners/msi001.c | 7 +++++++
 1 file changed, 7 insertions(+)
drivers/media/tuners/msi001.c +7 -0
index 3a12ef35682b5..64d98517f470f 100644
@@ -464,6 +464,13 @@ static int msi001_probe(struct spi_device *spi)
 			V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);
 	dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops,
 			V4L2_CID_RF_TUNER_BANDWIDTH, 200000, 8000000, 1, 200000);
+	if (dev->hdl.error) {
+		ret = dev->hdl.error;
+		dev_err(&spi->dev, "Could not initialize controls\n");
+		/* control init failed, free handler */
+		goto err_ctrl_handler_free;
+	}
+
 	v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
 	dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops,
 			V4L2_CID_RF_TUNER_LNA_GAIN, 0, 1, 1, 1);
Signature · 1 line
2.34.1
author maintainer
#56 lore raw

PATCH 56/186 usb: ftdi-elan: fix memory leak on device disconnect

In reply to Greg Kroah-Hartman

From: Wei Yongjun <[email protected]>

[ Upstream commit 1646566b5e0c556f779180a8514e521ac735de1e ]

'ftdi' is alloced when probe device, but not free on device disconnect, this cause a memory leak as follows:

unreferenced object 0xffff88800d584000 (size 8400):
comm "kworker/0:2", pid 3809, jiffies 4295453055 (age 13.784s) hex dump (first 32 bytes):

    00 40 58 0d 80 88 ff ff 00 40 58 0d 80 88 ff ff  .@X......@X.....
    00 00 00 00 00 00 00 00 00 00 00 00 ad 4e ad de  .............N..
  backtrace:
    [<000000000d47f947>] kmalloc_order_trace+0x19/0x110 mm/slab_common.c:960
    [<000000008548ac68>] ftdi_elan_probe+0x8c/0x880 drivers/usb/misc/ftdi-elan.c:2647
    [<000000007f73e422>] usb_probe_interface+0x31b/0x800 drivers/usb/core/driver.c:396
    [<00000000fe8d07fc>] really_probe+0x299/0xc30 drivers/base/dd.c:517
    [<0000000005da7d32>] __driver_probe_device+0x357/0x500 drivers/base/dd.c:751
    [<000000003c2c9579>] driver_probe_device+0x4e/0x140 drivers/base/dd.c:781

Fix it by freeing 'ftdi' after nobody use it.

Fixes a5c66e4b2418 ("USB: ftdi-elan: client driver for ELAN Uxxx adapters")
---
 drivers/usb/misc/ftdi-elan.c | 1 +
 1 file changed, 1 insertion(+)
drivers/usb/misc/ftdi-elan.c +1 -0
index 424ff12f3b51f..0231c0cc6481d 100644
@@ -206,6 +206,7 @@ static void ftdi_elan_delete(struct kref *kref)
 	mutex_unlock(&ftdi_module_lock);
 	kfree(ftdi->bulk_in_buffer);
 	ftdi->bulk_in_buffer = NULL;
+	kfree(ftdi);
 }
 
 static void ftdi_elan_put_kref(struct usb_ftdi *ftdi)
Signature · 1 line
2.34.1
author maintainer
#57 lore raw

PATCH 57/186 x86/mce/inject: Avoid out-of-bounds write when setting flags

In reply to Greg Kroah-Hartman

From: Zhang Zixun <[email protected]>

[ Upstream commit de768416b203ac84e02a757b782a32efb388476f ]

A contrived zero-length write, for example, by using write(2):

  ...
  ret = write(fd, str, 0);
  ...

to the "flags" file causes:

  BUG: KASAN: stack-out-of-bounds in flags_write
  Write of size 1 at addr ffff888019be7ddf by task writefile/3787

  CPU: 4 PID: 3787 Comm: writefile Not tainted 5.16.0-rc7+ #12
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014

due to accessing buf one char before its start.

Prevent such out-of-bounds access.

[ bp: Productize into a proper patch. Link below is the next best
thing because the original mail didn't get archived on lore. ]

Fixes 0451d14d0561 ("EDAC, mce_amd_inj: Modify flags attribute to use string arguments")
---
 arch/x86/kernel/cpu/mcheck/mce-inject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
arch/x86/kernel/cpu/mcheck/mce-inject.c +1 -1
index 94aa91b09c288..2778b66aee8fc 100644
@@ -354,7 +354,7 @@ static ssize_t flags_write(struct file *filp, const char __user *ubuf,
 	char buf[MAX_FLAG_OPT_SIZE], *__buf;
 	int err;
 
-	if (cnt > MAX_FLAG_OPT_SIZE)
+	if (!cnt || cnt > MAX_FLAG_OPT_SIZE)
 		return -EINVAL;
 
 	if (copy_from_user(&buf, ubuf, cnt))
Signature · 1 line
2.34.1
author maintainer
#58 lore raw

PATCH 58/186 pcmcia: rsrc_nonstatic: Fix a NULL pointer dereference in __nonstatic_find_io_region()

In reply to Greg Kroah-Hartman

From: Zhou Qingyang <[email protected]>

[ Upstream commit ca0fe0d7c35c97528bdf621fdca75f13157c27af ]

In __nonstatic_find_io_region(), pcmcia_make_resource() is assigned to res and used in pci_bus_alloc_resource(). There is a dereference of res in pci_bus_alloc_resource(), which could lead to a NULL pointer dereference on failure of pcmcia_make_resource().

Fix this bug by adding a check of res.

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_PCCARD_NONSTATIC=y show no new warnings, and our static analyzer no longer warns about this code.

Fixes 49b1153adfe1 ("pcmcia: move all pcmcia_resource_ops providers into one module")
[[email protected]: Fix typo in commit message]
---
 drivers/pcmcia/rsrc_nonstatic.c | 3 +++
 1 file changed, 3 insertions(+)
drivers/pcmcia/rsrc_nonstatic.c +3 -0
index 5ef7b46a25786..4d244014f423f 100644
@@ -693,6 +693,9 @@ static struct resource *__nonstatic_find_io_region(struct pcmcia_socket *s,
 	unsigned long min = base;
 	int ret;
 
+	if (!res)
+		return NULL;
+
 	data.mask = align - 1;
 	data.offset = base & data.mask;
 	data.map = &s_data->io_db;
Signature · 1 line
2.34.1
author maintainer
#59 lore raw

PATCH 59/186 pcmcia: rsrc_nonstatic: Fix a NULL pointer dereference in nonstatic_find_mem_region()

In reply to Greg Kroah-Hartman

From: Zhou Qingyang <[email protected]>

[ Upstream commit 977d2e7c63c3d04d07ba340b39987742e3241554 ]

In nonstatic_find_mem_region(), pcmcia_make_resource() is assigned to res and used in pci_bus_alloc_resource(). There a dereference of res in pci_bus_alloc_resource(), which could lead to a NULL pointer dereference on failure of pcmcia_make_resource().

Fix this bug by adding a check of res.

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_PCCARD_NONSTATIC=y show no new warnings, and our static analyzer no longer warns about this code.

Fixes 49b1153adfe1 ("pcmcia: move all pcmcia_resource_ops providers into one module")
---
 drivers/pcmcia/rsrc_nonstatic.c | 3 +++
 1 file changed, 3 insertions(+)
drivers/pcmcia/rsrc_nonstatic.c +3 -0
index 4d244014f423f..2e96d9273b780 100644
@@ -815,6 +815,9 @@ static struct resource *nonstatic_find_mem_region(u_long base, u_long num,
 	unsigned long min, max;
 	int ret, i, j;
 
+	if (!res)
+		return NULL;
+
 	low = low || !(s->features & SS_CAP_PAGE_REGS);
 
 	data.mask = align - 1;
Signature · 1 line
2.34.1
author maintainer
#60 lore raw

PATCH 60/186 ppp: ensure minimum packet size in ppp_write()

In reply to Greg Kroah-Hartman

From: Eric Dumazet <[email protected]>

[ Upstream commit 44073187990d5629804ce0627525f6ea5cfef171 ]

It seems pretty clear ppp layer assumed user space would always be kind to provide enough data in their write() to a ppp device.

This patch makes sure user provides at least 2 bytes.

It adds PPP_PROTO_LEN macro that could replace in net-next many occurrences of hard-coded 2 value.

I replaced only one occurrence to ease backports to stable kernels.

The bug manifests in the following report:

BUG: KMSAN: uninit-value in ppp_send_frame+0x28d/0x27c0 drivers/net/ppp/ppp_generic.c:1740
 ppp_send_frame+0x28d/0x27c0 drivers/net/ppp/ppp_generic.c:1740
 __ppp_xmit_process+0x23e/0x4b0 drivers/net/ppp/ppp_generic.c:1640
 ppp_xmit_process+0x1fe/0x480 drivers/net/ppp/ppp_generic.c:1661
 ppp_write+0x5cb/0x5e0 drivers/net/ppp/ppp_generic.c:513
 do_iter_write+0xb0c/0x1500 fs/read_write.c:853
 vfs_writev fs/read_write.c:924 [inline]
 do_writev+0x645/0xe00 fs/read_write.c:967
 __do_sys_writev fs/read_write.c:1040 [inline]
 __se_sys_writev fs/read_write.c:1037 [inline]
 __x64_sys_writev+0xe5/0x120 fs/read_write.c:1037
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:

 slab_post_alloc_hook mm/slab.h:524 [inline]
 slab_alloc_node mm/slub.c:3251 [inline]
 __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974
 kmalloc_reserve net/core/skbuff.c:354 [inline]
 __alloc_skb+0x545/0xf90 net/core/skbuff.c:426
 alloc_skb include/linux/skbuff.h:1126 [inline]
 ppp_write+0x11d/0x5e0 drivers/net/ppp/ppp_generic.c:501
 do_iter_write+0xb0c/0x1500 fs/read_write.c:853
 vfs_writev fs/read_write.c:924 [inline]
 do_writev+0x645/0xe00 fs/read_write.c:967
 __do_sys_writev fs/read_write.c:1040 [inline]
 __se_sys_writev fs/read_write.c:1037 [inline]
 __x64_sys_writev+0xe5/0x120 fs/read_write.c:1037
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae
---
 drivers/net/ppp/ppp_generic.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
drivers/net/ppp/ppp_generic.c +6 -1
index c6e067aae9551..81a4fe9706be6 100644
@@ -72,6 +72,8 @@
 #define MPHDRLEN	6	/* multilink protocol header length */
 #define MPHDRLEN_SSN	4	/* ditto with short sequence numbers */
 
+#define PPP_PROTO_LEN	2
+
 /*
  * An instance of /dev/ppp can be associated with either a ppp
  * interface unit or a ppp channel.  In both cases, file->private_data
@@ -501,6 +503,9 @@ static ssize_t ppp_write(struct file *file, const char __user *buf,
 
 	if (!pf)
 		return -ENXIO;
+	/* All PPP packets should start with the 2-byte protocol */
+	if (count < PPP_PROTO_LEN)
+		return -EINVAL;
 	ret = -ENOMEM;
 	skb = alloc_skb(count + pf->hdrlen, GFP_KERNEL);
 	if (!skb)
@@ -1564,7 +1569,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
 	}
 
 	++ppp->stats64.tx_packets;
-	ppp->stats64.tx_bytes += skb->len - 2;
+	ppp->stats64.tx_bytes += skb->len - PPP_PROTO_LEN;
 
 	switch (proto) {
 	case PPP_IP:
Signature · 1 line
2.34.1
author maintainer
#61 lore raw

PATCH 61/186 fsl/fman: Check for null pointer after calling devm_ioremap

In reply to Greg Kroah-Hartman

From: Jiasheng Jiang <[email protected]>

[ Upstream commit d5a73ec96cc57cf67e51b12820fc2354e7ca46f8 ]

As the possible failure of the allocation, the devm_ioremap() may return NULL pointer.
Take tgec_initialization() as an example.
If allocation fails, the params->base_addr will be NULL pointer and will be assigned to tgec->regs in tgec_config().
Then it will cause the dereference of NULL pointer in set_mac_address(), which is called by tgec_init().
Therefore, it should be better to add the sanity check after the calling of the devm_ioremap().

Fixes 3933961682a3 ("fsl/fman: Add FMan MAC driver")
---
 drivers/net/ethernet/freescale/fman/mac.c | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)
drivers/net/ethernet/freescale/fman/mac.c +16 -5
index 387eb4a88b723..3221a54202638 100644
@@ -96,14 +96,17 @@ static void mac_exception(void *handle, enum fman_mac_exceptions ex)
 		__func__, ex);
 }
 
-static void set_fman_mac_params(struct mac_device *mac_dev,
-				struct fman_mac_params *params)
+static int set_fman_mac_params(struct mac_device *mac_dev,
+			       struct fman_mac_params *params)
 {
 	struct mac_priv_s *priv = mac_dev->priv;
 
 	params->base_addr = (typeof(params->base_addr))
 		devm_ioremap(priv->dev, mac_dev->res->start,
 			     resource_size(mac_dev->res));
+	if (!params->base_addr)
+		return -ENOMEM;
+
 	memcpy(&params->addr, mac_dev->addr, sizeof(mac_dev->addr));
 	params->max_speed	= priv->max_speed;
 	params->phy_if		= priv->phy_if;
@@ -114,6 +117,8 @@ static void set_fman_mac_params(struct mac_device *mac_dev,
 	params->event_cb	= mac_exception;
 	params->dev_id		= mac_dev;
 	params->internal_phy_node = priv->internal_phy_node;
+
+	return 0;
 }
 
 static int tgec_initialization(struct mac_device *mac_dev)
@@ -125,7 +130,9 @@ static int tgec_initialization(struct mac_device *mac_dev)
 
 	priv = mac_dev->priv;
 
-	set_fman_mac_params(mac_dev, &params);
+	err = set_fman_mac_params(mac_dev, &params);
+	if (err)
+		goto _return;
 
 	mac_dev->fman_mac = tgec_config(&params);
 	if (!mac_dev->fman_mac) {
@@ -171,7 +178,9 @@ static int dtsec_initialization(struct mac_device *mac_dev)
 
 	priv = mac_dev->priv;
 
-	set_fman_mac_params(mac_dev, &params);
+	err = set_fman_mac_params(mac_dev, &params);
+	if (err)
+		goto _return;
 
 	mac_dev->fman_mac = dtsec_config(&params);
 	if (!mac_dev->fman_mac) {
@@ -220,7 +229,9 @@ static int memac_initialization(struct mac_device *mac_dev)
 
 	priv = mac_dev->priv;
 
-	set_fman_mac_params(mac_dev, &params);
+	err = set_fman_mac_params(mac_dev, &params);
+	if (err)
+		goto _return;
 
 	if (priv->max_speed == SPEED_10000)
 		params.phy_if = PHY_INTERFACE_MODE_XGMII;
Signature · 1 line
2.34.1
author maintainer
#62 lore raw

PATCH 62/186 spi: spi-meson-spifc: Add missing pm_runtime_disable() in meson_spifc_probe

In reply to Greg Kroah-Hartman

From: Miaoqian Lin <[email protected]>

[ Upstream commit 69c1b87516e327a60b39f96b778fe683259408bf ]

If the probe fails, we should use pm_runtime_disable() to balance pm_runtime_enable().
Add missing pm_runtime_disable() for meson_spifc_probe.

Fixes c3e4bc5434d2 ("spi: meson: Add support for Amlogic Meson SPIFC")
---
 drivers/spi/spi-meson-spifc.c | 1 +
 1 file changed, 1 insertion(+)
drivers/spi/spi-meson-spifc.c +1 -0
index 616566e793c62..28975b6f054fa 100644
@@ -357,6 +357,7 @@ static int meson_spifc_probe(struct platform_device *pdev)
 	return 0;
 out_clk:
 	clk_disable_unprepare(spifc->clk);
+	pm_runtime_disable(spifc->dev);
 out_err:
 	spi_master_put(master);
 	return ret;
Signature · 1 line
2.34.1
author maintainer
#63 lore raw

PATCH 63/186 tpm: add request_locality before write TPM_INT_ENABLE

In reply to Greg Kroah-Hartman

From: Chen Jun <[email protected]>

[ Upstream commit 0ef333f5ba7f24f5d8478425c163d3097f1c7afd ]

Locality is not appropriately requested before writing the int mask. Add the missing boilerplate.

Fixes e6aef069b6e9 ("tpm_tis: convert to using locality callbacks")
---
 drivers/char/tpm/tpm_tis_core.c | 8 ++++++++
 1 file changed, 8 insertions(+)
drivers/char/tpm/tpm_tis_core.c +8 -0
index 1ac9abcdad52a..9e42943f6a599 100644
@@ -809,7 +809,15 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
 	intmask |= TPM_INTF_CMD_READY_INT | TPM_INTF_LOCALITY_CHANGE_INT |
 		   TPM_INTF_DATA_AVAIL_INT | TPM_INTF_STS_VALID_INT;
 	intmask &= ~TPM_GLOBAL_INT_ENABLE;
+
+	rc = request_locality(chip, 0);
+	if (rc < 0) {
+		rc = -ENODEV;
+		goto out_err;
+	}
+
 	tpm_tis_write32(priv, TPM_INT_ENABLE(priv->locality), intmask);
+	release_locality(chip, 0);
 
 	rc = tpm2_probe(chip);
 	if (rc)
Signature · 1 line
2.34.1
author maintainer
#64 lore raw

PATCH 64/186 can: softing: softing_startstop(): fix set but not used variable warning

In reply to Greg Kroah-Hartman

From: Marc Kleine-Budde <[email protected]>

[ Upstream commit 370d988cc529598ebaec6487d4f84c2115dc696b ]

In the function softing_startstop() the variable error_reporting is assigned but not used. The code that uses this variable is commented out. Its stated that the functionality is not finally verified.

To fix the warning:

| drivers/net/can/softing/softing_fw.c:424:9: error: variable 'error_reporting' set but not used [-Werror,-Wunused-but-set-variable]

remove the comment, activate the code, but add a "0 &&" to the if expression and rely on the optimizer rather than the preprocessor to remove the code.

Fixes 03fd3cf5a179 ("can: add driver for Softing card")
Cc Kurt Van Dijck <[email protected]>
---
 drivers/net/can/softing/softing_fw.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)
drivers/net/can/softing/softing_fw.c +6 -5
index aac58ce6e371a..209eddeb822e5 100644
@@ -576,18 +576,19 @@ int softing_startstop(struct net_device *dev, int up)
 		if (ret < 0)
 			goto failed;
 	}
-	/* enable_error_frame */
-	/*
+
+	/* enable_error_frame
+	 *
 	 * Error reporting is switched off at the moment since
 	 * the receiving of them is not yet 100% verified
 	 * This should be enabled sooner or later
-	 *
-	if (error_reporting) {
+	 */
+	if (0 && error_reporting) {
 		ret = softing_fct_cmd(card, 51, "enable_error_frame");
 		if (ret < 0)
 			goto failed;
 	}
-	*/
+
 	/* initialize interface */
 	iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 2]);
 	iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 4]);
Signature · 1 line
2.34.1
author maintainer
#65 lore raw

PATCH 65/186 can: xilinx_can: xcan_probe(): check for error irq

In reply to Greg Kroah-Hartman

From: Jiasheng Jiang <[email protected]>

[ Upstream commit c6564c13dae25cd7f8e1de5127b4da4500ee5844 ]

For the possible failure of the platform_get_irq(), the returned irq could be error number and will finally cause the failure of the request_irq().

Consider that platform_get_irq() can now in certain cases return -EPROBE_DEFER, and the consequences of letting request_irq() effectively convert that into -EINVAL, even at probe time rather than later on. So it might be better to check just now.

---
 drivers/net/can/xilinx_can.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
drivers/net/can/xilinx_can.c +6 -1
index 5a24039733efd..caab0df7b368f 100644
@@ -1302,7 +1302,12 @@ static int xcan_probe(struct platform_device *pdev)
 	spin_lock_init(&priv->tx_lock);
 
 	/* Get IRQ for the device */
-	ndev->irq = platform_get_irq(pdev, 0);
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		goto err_free;
+
+	ndev->irq = ret;
+
 	ndev->flags |= IFF_ECHO;	/* We support local echo */
 
 	platform_set_drvdata(pdev, ndev);
Signature · 1 line
2.34.1
author maintainer
#66 lore raw

PATCH 66/186 pcmcia: fix setting of kthread task states

In reply to Greg Kroah-Hartman

From: Dominik Brodowski <[email protected]>

[ Upstream commit fbb3485f1f931102d8ba606f1c28123f5b48afa3 ]

We need to set TASK_INTERRUPTIBLE before calling kthread_should_stop(). Otherwise, kthread_stop() might see that the pccardd thread is still in TASK_RUNNING state and fail to wake it up.

Additionally, we only need to set the state back to TASK_RUNNING if kthread_should_stop() breaks the loop.

Cc Greg Kroah-Hartman <[email protected]>
Fixes d3046ba809ce ("pcmcia: fix a boot time warning in pcmcia cs code")
---
 drivers/pcmcia/cs.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
drivers/pcmcia/cs.c +3 -5
index 8c8caec3a72cc..182e5ef4ab83d 100644
@@ -669,18 +669,16 @@ static int pccardd(void *__skt)
 		if (events || sysfs_events)
 			continue;
 
+		set_current_state(TASK_INTERRUPTIBLE);
 		if (kthread_should_stop())
 			break;
 
-		set_current_state(TASK_INTERRUPTIBLE);
-
 		schedule();
 
-		/* make sure we are running */
-		__set_current_state(TASK_RUNNING);
-
 		try_to_freeze();
 	}
+	/* make sure we are running before we exit */
+	__set_current_state(TASK_RUNNING);
 
 	/* shut down socket, if a device is still present */
 	if (skt->state & SOCKET_PRESENT) {
Signature · 1 line
2.34.1
author maintainer
#67 lore raw

PATCH 67/186 net: mcs7830: handle usb read errors properly

In reply to Greg Kroah-Hartman

From: Pavel Skripkin <[email protected]>

[ Upstream commit d668769eb9c52b150753f1653f7f5a0aeb8239d2 ]

Syzbot reported uninit value in mcs7830_bind(). The problem was in missing validation check for bytes read via usbnet_read_cmd().

usbnet_read_cmd() internally calls usb_control_msg(), that returns number of bytes read. Code should validate that requested number of bytes was actually read.

So, this patch adds missing size validation check inside mcs7830_get_reg() to prevent uninit value bugs

Reported-and-tested-by [email protected]
Fixes 2a36d7083438 ("USB: driver for mcs7830 (aka DeLOCK) USB ethernet adapter")
---
 drivers/net/usb/mcs7830.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)
drivers/net/usb/mcs7830.c +10 -2
index 5a47e5510ca82..c0f52a622964f 100644
@@ -121,8 +121,16 @@ static const char driver_name[] = "MOSCHIP usb-ethernet driver";
 
 static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data)
 {
-	return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ,
-				0x0000, index, data, size);
+	int ret;
+
+	ret = usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ,
+			      0x0000, index, data, size);
+	if (ret < 0)
+		return ret;
+	else if (ret < size)
+		return -ENODATA;
+
+	return ret;
 }
 
 static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data)
Signature · 1 line
2.34.1
author maintainer
#68 lore raw

PATCH 68/186 ext4: avoid trim error on fs with small groups

In reply to Greg Kroah-Hartman

From: Jan Kara <[email protected]>

[ Upstream commit 173b6e383d2a204c9921ffc1eca3b87aa2106c33 ]

A user reported FITRIM ioctl failing for him on ext4 on some devices without apparent reason. After some debugging we've found out that these devices (being LVM volumes) report rather large discard granularity of 42MB and the filesystem had 1k blocksize and thus group size of 8MB. Because ext4 FITRIM implementation puts discard granularity into minlen, ext4_trim_fs() declared the trim request as invalid. However just silently doing nothing seems to be a more appropriate reaction to such combination of parameters since user did not specify anything wrong.

CC Lukas Czerner <[email protected]>
Fixes 5c2ed62fd447 ("ext4: Adjust minlen with discard_granularity in the FITRIM ioctl")
---
 fs/ext4/ioctl.c   | 2 --
 fs/ext4/mballoc.c | 8 ++++++++
 2 files changed, 8 insertions(+), 2 deletions(-)
fs/ext4/ioctl.c +0 -2
index 6718c7ccd6314..3bd79fc4e9487 100644
@@ -992,8 +992,6 @@ resizefs_out:
 		    sizeof(range)))
 			return -EFAULT;
 
-		range.minlen = max((unsigned int)range.minlen,
-				   q->limits.discard_granularity);
 		ret = ext4_trim_fs(sb, &range);
 		if (ret < 0)
 			return ret;
fs/ext4/mballoc.c +8 -0
index c40d3c44a1d69..28bee66c5fbf0 100644
@@ -5284,6 +5284,7 @@ out:
  */
 int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
 {
+	struct request_queue *q = bdev_get_queue(sb->s_bdev);
 	struct ext4_group_info *grp;
 	ext4_group_t group, first_group, last_group;
 	ext4_grpblk_t cnt = 0, first_cluster, last_cluster;
@@ -5302,6 +5303,13 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
 	    start >= max_blks ||
 	    range->len < sb->s_blocksize)
 		return -EINVAL;
+	/* No point to try to trim less than discard granularity */
+	if (range->minlen < q->limits.discard_granularity) {
+		minlen = EXT4_NUM_B2C(EXT4_SB(sb),
+			q->limits.discard_granularity >> sb->s_blocksize_bits);
+		if (minlen > EXT4_CLUSTERS_PER_GROUP(sb))
+			goto out;
+	}
 	if (end >= max_blks)
 		end = max_blks - 1;
 	if (end <= first_data_blk)
Signature · 1 line
2.34.1
author maintainer
#69 lore raw

PATCH 69/186 ALSA: jack: Add missing rwsem around snd_ctl_remove() calls

In reply to Greg Kroah-Hartman

From: Takashi Iwai <[email protected]>

[ Upstream commit 06764dc931848c3a9bc01a63bbf76a605408bb54 ]

snd_ctl_remove() has to be called with card->controls_rwsem held (when called after the card instantiation). This patch add the missing rwsem calls around it.

Fixes 9058cbe1eed2 ("ALSA: jack: implement kctl creating for jack devices")
---
 sound/core/jack.c | 3 +++
 1 file changed, 3 insertions(+)
sound/core/jack.c +3 -0
index 5ddf81f091fa9..36cfe1c54109d 100644
@@ -68,10 +68,13 @@ static int snd_jack_dev_free(struct snd_device *device)
 	struct snd_card *card = device->card;
 	struct snd_jack_kctl *jack_kctl, *tmp_jack_kctl;
 
+	down_write(&card->controls_rwsem);
 	list_for_each_entry_safe(jack_kctl, tmp_jack_kctl, &jack->kctl_list, list) {
 		list_del_init(&jack_kctl->list);
 		snd_ctl_remove(card, jack_kctl->kctl);
 	}
+	up_write(&card->controls_rwsem);
+
 	if (jack->private_free)
 		jack->private_free(jack);
 
Signature · 1 line
2.34.1
author maintainer
#70 lore raw

PATCH 70/186 ALSA: PCM: Add missing rwsem around snd_ctl_remove() calls

In reply to Greg Kroah-Hartman

From: Takashi Iwai <[email protected]>

[ Upstream commit 5471e9762e1af4b7df057a96bfd46cc250979b88 ]

snd_ctl_remove() has to be called with card->controls_rwsem held (when called after the card instantiation). This patch add the missing rwsem calls around it.

Fixes a8ff48cb7083 ("ALSA: pcm: Free chmap at PCM free callback, too")
---
 sound/core/pcm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
sound/core/pcm.c +5 -1
index 2b5caa8dea2e2..a228bf9331102 100644
@@ -875,7 +875,11 @@ EXPORT_SYMBOL(snd_pcm_new_internal);
 static void free_chmap(struct snd_pcm_str *pstr)
 {
 	if (pstr->chmap_kctl) {
-		snd_ctl_remove(pstr->pcm->card, pstr->chmap_kctl);
+		struct snd_card *card = pstr->pcm->card;
+
+		down_write(&card->controls_rwsem);
+		snd_ctl_remove(card, pstr->chmap_kctl);
+		up_write(&card->controls_rwsem);
 		pstr->chmap_kctl = NULL;
 	}
 }
Signature · 1 line
2.34.1
author maintainer
#71 lore raw

PATCH 71/186 ALSA: hda: Add missing rwsem around snd_ctl_remove() calls

In reply to Greg Kroah-Hartman

From: Takashi Iwai <[email protected]>

[ Upstream commit 80bd64af75b4bb11c0329bc66c35da2ddfb66d88 ]

snd_ctl_remove() has to be called with card->controls_rwsem held (when called after the card instantiation). This patch add the missing rwsem calls around it.

Fixes d13bd412dce2 ("ALSA: hda - Manage kcontrol lists")
---
 sound/pci/hda/hda_codec.c | 3 +++
 1 file changed, 3 insertions(+)
sound/pci/hda/hda_codec.c +3 -0
index a56f018d586f5..8ec73955170b4 100644
@@ -1680,8 +1680,11 @@ void snd_hda_ctls_clear(struct hda_codec *codec)
 {
 	int i;
 	struct hda_nid_item *items = codec->mixers.list;
+
+	down_write(&codec->card->controls_rwsem);
 	for (i = 0; i < codec->mixers.used; i++)
 		snd_ctl_remove(codec->card, items[i].kctl);
+	up_write(&codec->card->controls_rwsem);
 	snd_array_free(&codec->mixers);
 	snd_array_free(&codec->nids);
 }
Signature · 1 line
2.34.1
author maintainer
#72 lore raw

PATCH 72/186 RDMA/hns: Validate the pkey index

In reply to Greg Kroah-Hartman

From: Kamal Heib <[email protected]>

[ Upstream commit 2a67fcfa0db6b4075515bd23497750849b88850f ]

Before query pkey, make sure that the queried index is valid.

Fixes 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver")
---
 drivers/infiniband/hw/hns/hns_roce_main.c | 3 +++
 1 file changed, 3 insertions(+)
drivers/infiniband/hw/hns/hns_roce_main.c +3 -0
index d9777b662eba9..6f64dc5262c0d 100644
@@ -294,6 +294,9 @@ static int hns_roce_query_gid(struct ib_device *ib_dev, u8 port_num, int index,
 static int hns_roce_query_pkey(struct ib_device *ib_dev, u8 port, u16 index,
 			       u16 *pkey)
 {
+	if (index > 0)
+		return -EINVAL;
+
 	*pkey = PKEY_ID;
 
 	return 0;
Signature · 1 line
2.34.1
author maintainer
#73 lore raw

PATCH 73/186 powerpc/prom_init: Fix improper check of prom_getprop()

In reply to Greg Kroah-Hartman

From: Peiwei Hu <[email protected]>

[ Upstream commit 869fb7e5aecbc163003f93f36dcc26d0554319f6 ]

prom_getprop() can return PROM_ERROR. Binary operator can not identify it.

Fixes 94d2dde738a5 ("[POWERPC] Efika: prune fixups and make them more carefull")
---
 arch/powerpc/kernel/prom_init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
arch/powerpc/kernel/prom_init.c +1 -1
index f8782c7ef50f1..7f049a60747e9 100644
@@ -2774,7 +2774,7 @@ static void __init fixup_device_tree_efika_add_phy(void)
 
 	/* Check if the phy-handle property exists - bail if it does */
 	rv = prom_getprop(node, "phy-handle", prop, sizeof(prop));
-	if (!rv)
+	if (rv <= 0)
 		return;
 
 	/*
Signature · 1 line
2.34.1
author maintainer
#74 lore raw

PATCH 74/186 ALSA: oss: fix compile error when OSS_DEBUG is enabled

In reply to Greg Kroah-Hartman

From: Bixuan Cui <[email protected]>

[ Upstream commit 8e7daf318d97f25e18b2fc7eb5909e34cd903575 ]

Fix compile error when OSS_DEBUG is enabled:

    sound/core/oss/pcm_oss.c: In function 'snd_pcm_oss_set_trigger':
    sound/core/oss/pcm_oss.c:2055:10: error: 'substream' undeclared (first
    use in this function); did you mean 'csubstream'?
      pcm_dbg(substream->pcm, "pcm_oss: trigger = 0x%x\n", trigger);
              ^
Fixes 61efcee8608c ("ALSA: oss: Use standard printk helpers")
---
 sound/core/oss/pcm_oss.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
sound/core/oss/pcm_oss.c +1 -1
index b092f257c1c69..87806dab321a3 100644
@@ -2070,7 +2070,7 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
 	int err, cmd;
 
 #ifdef OSS_DEBUG
-	pcm_dbg(substream->pcm, "pcm_oss: trigger = 0x%x\n", trigger);
+	pr_debug("pcm_oss: trigger = 0x%x\n", trigger);
 #endif
 	
 	psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
Signature · 1 line
2.34.1
author maintainer
#75 lore raw

PATCH 75/186 char/mwave: Adjust io port register size

In reply to Greg Kroah-Hartman

From: Kees Cook <[email protected]>

[ Upstream commit f5912cc19acd7c24b2dbf65a6340bf194244f085 ]

Using MKWORD() on a byte-sized variable results in OOB read. Expand the size of the reserved area so both MKWORD and MKBYTE continue to work without overflow. Silences this warning on a -Warray-bounds build:

drivers/char/mwave/3780i.h:346:22: error: array subscript 'short unsigned int[0]' is partly outside array bounds of 'DSP_ISA_SLAVE_CONTROL[1]' [-Werror=array-bounds]
346 | #define MKWORD(var) (*((unsigned short *)(&var)))

      |                     ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

drivers/char/mwave/3780i.h:356:40: note: in definition of macro 'OutWordDsp'
356 | #define OutWordDsp(index,value) outw(value,usDspBaseIO+index)
| ^~~~~
drivers/char/mwave/3780i.c:373:41: note: in expansion of macro 'MKWORD'
373 | OutWordDsp(DSP_IsaSlaveControl, MKWORD(rSlaveControl));
| ^~~~~~
drivers/char/mwave/3780i.c:358:31: note: while referencing 'rSlaveControl'

  358 |         DSP_ISA_SLAVE_CONTROL rSlaveControl;
      |                               ^~~~~~~~~~~~~
---
 drivers/char/mwave/3780i.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/char/mwave/3780i.h +1 -1
index 9ccb6b270b071..95164246afd1a 100644
@@ -68,7 +68,7 @@ typedef struct {
 	unsigned char ClockControl:1;	/* RW: Clock control: 0=normal, 1=stop 3780i clocks */
 	unsigned char SoftReset:1;	/* RW: Soft reset 0=normal, 1=soft reset active */
 	unsigned char ConfigMode:1;	/* RW: Configuration mode, 0=normal, 1=config mode */
-	unsigned char Reserved:5;	/* 0: Reserved */
+	unsigned short Reserved:13;	/* 0: Reserved */
 } DSP_ISA_SLAVE_CONTROL;
 
 
Signature · 1 line
2.34.1
author maintainer
#76 lore raw

PATCH 76/186 uio: uio_dmem_genirq: Catch the Exception

In reply to Greg Kroah-Hartman

From: Jiasheng Jiang <[email protected]>

[ Upstream commit eec91694f927d1026974444eb6a3adccd4f1cbc2 ]

The return value of dma_set_coherent_mask() is not always 0. To catch the exception in case that dma is not support the mask.

Fixes 0a0c3b5a24bd ("Add new uio device for dynamic memory allocation")
---
 drivers/uio/uio_dmem_genirq.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
drivers/uio/uio_dmem_genirq.c +5 -1
index a00b4aee6c799..a31b9d5260ca0 100644
@@ -194,7 +194,11 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
 		goto bad0;
 	}
 
-	dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+	ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+	if (ret) {
+		dev_err(&pdev->dev, "DMA enable failed\n");
+		return ret;
+	}
 
 	priv->uioinfo = uioinfo;
 	spin_lock_init(&priv->lock);
Signature · 1 line
2.34.1
author maintainer
#77 lore raw

PATCH 77/186 scsi: ufs: Fix race conditions related to driver data

In reply to Greg Kroah-Hartman

From: Bart Van Assche <[email protected]>

[ Upstream commit 21ad0e49085deb22c094f91f9da57319a97188e4 ]

The driver data pointer must be set before any callbacks are registered that use that pointer. Hence move the initialization of that pointer from after the ufshcd_init() call to inside ufshcd_init().

---
 drivers/scsi/ufs/tc-dwc-g210-pci.c | 1 -
 drivers/scsi/ufs/ufshcd-pltfrm.c   | 2 --
 drivers/scsi/ufs/ufshcd.c          | 7 +++++++
 3 files changed, 7 insertions(+), 3 deletions(-)
drivers/scsi/ufs/tc-dwc-g210-pci.c +0 -1
index 325d5e14fc0d8..a8b50fc1960d1 100644
@@ -138,7 +138,6 @@ tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		return err;
 	}
 
-	pci_set_drvdata(pdev, hba);
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_allow(&pdev->dev);
 
drivers/scsi/ufs/ufshcd-pltfrm.c +0 -2
index 8992354d4e2c7..6f076ff35dd38 100644
@@ -348,8 +348,6 @@ int ufshcd_pltfrm_init(struct platform_device *pdev,
 		goto dealloc_host;
 	}
 
-	platform_set_drvdata(pdev, hba);
-
 	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
drivers/scsi/ufs/ufshcd.c +7 -0
index f46fa8a2f6585..694c0fc31fbf7 100644
@@ -7904,6 +7904,13 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
 	struct Scsi_Host *host = hba->host;
 	struct device *dev = hba->dev;
 
+	/*
+	 * dev_set_drvdata() must be called before any callbacks are registered
+	 * that use dev_get_drvdata() (frequency scaling, clock scaling, hwmon,
+	 * sysfs).
+	 */
+	dev_set_drvdata(dev, hba);
+
 	if (!mmio_base) {
 		dev_err(hba->dev,
 		"Invalid memory reference for mmio_base is NULL\n");
Signature · 1 line
2.34.1
author maintainer
#78 lore raw

PATCH 78/186 RDMA/core: Let ib_find_gid() continue search even after empty entry

In reply to Greg Kroah-Hartman

From: Avihai Horon <[email protected]>

[ Upstream commit 483d805191a23191f8294bbf9b4e94836f5d92e4 ]

Currently, ib_find_gid() will stop searching after encountering the first empty GID table entry. This behavior is wrong since neither IB nor RoCE spec enforce tightly packed GID tables.

For example, when a valid GID entry exists at index N, and if a GID entry is empty at index N-1, ib_find_gid() will fail to find the valid entry.

Fix it by making ib_find_gid() continue searching even after encountering missing entries.

---
 drivers/infiniband/core/device.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/infiniband/core/device.c +2 -1
index 6b0d1d8609cad..b230f156a9964 100644
@@ -1075,7 +1075,8 @@ int ib_find_gid(struct ib_device *device, union ib_gid *gid,
 		for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) {
 			ret = ib_query_gid(device, port, i, &tmp_gid, NULL);
 			if (ret)
-				return ret;
+				continue;
+
 			if (!memcmp(&tmp_gid, gid, sizeof *gid)) {
 				*port_num = port;
 				if (index)
Signature · 1 line
2.34.1
author maintainer
#79 lore raw

PATCH 79/186 dmaengine: pxa/mmp: stop referencing config->slave_id

In reply to Greg Kroah-Hartman

From: Arnd Bergmann <[email protected]>

[ Upstream commit 134c37fa250a87a7e77c80a7c59ae16c462e46e0 ]

The last driver referencing the slave_id on Marvell PXA and MMP platforms was the SPI driver, but this stopped doing so a long time ago, so the TODO from the earlier patch can no be removed.

Fixes b729bf34535e ("spi/pxa2xx: Don't use slave_id of dma_slave_config")
Fixes 13b3006b8ebd ("dma: mmp_pdma: add filter function")
---
 drivers/dma/mmp_pdma.c | 6 ------
 drivers/dma/pxa_dma.c  | 7 -------
 2 files changed, 13 deletions(-)
drivers/dma/mmp_pdma.c +0 -6
index eb3a1f42ab065..e8b2d3e31de80 100644
@@ -722,12 +722,6 @@ static int mmp_pdma_config(struct dma_chan *dchan,
 
 	chan->dir = cfg->direction;
 	chan->dev_addr = addr;
-	/* FIXME: drivers should be ported over to use the filter
-	 * function. Once that's done, the following two lines can
-	 * be removed.
-	 */
-	if (cfg->slave_id)
-		chan->drcmr = cfg->slave_id;
 
 	return 0;
 }
drivers/dma/pxa_dma.c +0 -7
index b53fb618bbf6b..99a8ff130ad51 100644
@@ -956,13 +956,6 @@ static void pxad_get_config(struct pxad_chan *chan,
 		*dcmd |= PXA_DCMD_BURST16;
 	else if (maxburst == 32)
 		*dcmd |= PXA_DCMD_BURST32;
-
-	/* FIXME: drivers should be ported over to use the filter
-	 * function. Once that's done, the following two lines can
-	 * be removed.
-	 */
-	if (chan->cfg.slave_id)
-		chan->drcmr = chan->cfg.slave_id;
 }
 
 static struct dma_async_tx_descriptor *
Signature · 1 line
2.34.1
author maintainer
#80 lore raw

PATCH 80/186 iommu/iova: Fix race between FQ timeout and teardown

In reply to Greg Kroah-Hartman

From: Xiongfeng Wang <[email protected]>

[ Upstream commit d7061627d701c90e1cac1e1e60c45292f64f3470 ]

It turns out to be possible for hotplugging out a device to reach the stage of tearing down the device's group and default domain before the domain's flush queue has drained naturally. At this point, it is then possible for the timeout to expire just before the del_timer() call in free_iova_flush_queue(), such that we then proceed to free the FQ resources while fq_flush_timeout() is still accessing them on another CPU. Crashes due to this have been observed in the wild while removing NVMe devices.

Close the race window by using del_timer_sync() to safely wait for any active timeout handler to finish before we start to free things. We already avoid any locking in free_iova_flush_queue() since the FQ is supposed to be inactive anyway, so the potential deadlock scenario does not apply.

---
 drivers/iommu/iova.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
drivers/iommu/iova.c +1 -2
index 2c97d2552c5bd..ebee9e191b3ee 100644
@@ -68,8 +68,7 @@ static void free_iova_flush_queue(struct iova_domain *iovad)
 	if (!has_iova_flush_queue(iovad))
 		return;
 
-	if (timer_pending(&iovad->fq_timer))
-		del_timer(&iovad->fq_timer);
+	del_timer_sync(&iovad->fq_timer);
 
 	fq_destroy_all_entries(iovad);
 
Signature · 1 line
2.34.1
author maintainer
#81 lore raw

PATCH 81/186 ASoC: samsung: idma: Check of ioremap return value

In reply to Greg Kroah-Hartman

From: Jiasheng Jiang <[email protected]>

[ Upstream commit 3ecb46755eb85456b459a1a9f952c52986bce8ec ]

Because of the potential failure of the ioremap(), the buf->area could be NULL.
Therefore, we need to check it and return -ENOMEM in order to transfer the error.

---
 sound/soc/samsung/idma.c | 2 ++
 1 file changed, 2 insertions(+)
sound/soc/samsung/idma.c +2 -0
index a635df61f928c..2a6ffb2abb338 100644
@@ -369,6 +369,8 @@ static int preallocate_idma_buffer(struct snd_pcm *pcm, int stream)
 	buf->addr = idma.lp_tx_addr;
 	buf->bytes = idma_hardware.buffer_bytes_max;
 	buf->area = (unsigned char * __force)ioremap(buf->addr, buf->bytes);
+	if (!buf->area)
+		return -ENOMEM;
 
 	return 0;
 }
Signature · 1 line
2.34.1
author maintainer
#82 lore raw

PATCH 82/186 misc: lattice-ecp3-config: Fix task hung when firmware load failed

In reply to Greg Kroah-Hartman

From: Wei Yongjun <[email protected]>

[ Upstream commit fcee5ce50bdb21116711e38635e3865594af907e ]

When firmware load failed, kernel report task hung as follows:

INFO: task xrun:5191 blocked for more than 147 seconds.
      Tainted: G        W         5.16.0-rc5-next-20211220+ #11
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:xrun            state:D stack:    0 pid: 5191 ppid:   270 flags:0x00000004
Call Trace:
 __schedule+0xc12/0x4b50 kernel/sched/core.c:4986
 schedule+0xd7/0x260 kernel/sched/core.c:6369 (discriminator 1)
 schedule_timeout+0x7aa/0xa80 kernel/time/timer.c:1857
 wait_for_completion+0x181/0x290 kernel/sched/completion.c:85
 lattice_ecp3_remove+0x32/0x40 drivers/misc/lattice-ecp3-config.c:221
 spi_remove+0x72/0xb0 drivers/spi/spi.c:409

lattice_ecp3_remove() wait for signals from firmware loading, but when load failed, firmware_load() does not send this signal. This cause device remove hung. Fix it by sending signal even if load failed.

Fixes 781551df57c7 ("misc: Add Lattice ECP3 FPGA configuration via SPI")
---
 drivers/misc/lattice-ecp3-config.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
drivers/misc/lattice-ecp3-config.c +6 -6
index 626fdcaf25101..645d26536114f 100644
@@ -81,12 +81,12 @@ static void firmware_load(const struct firmware *fw, void *context)
 
 	if (fw == NULL) {
 		dev_err(&spi->dev, "Cannot load firmware, aborting\n");
-		return;
+		goto out;
 	}
 
 	if (fw->size == 0) {
 		dev_err(&spi->dev, "Error: Firmware size is 0!\n");
-		return;
+		goto out;
 	}
 
 	/* Fill dummy data (24 stuffing bits for commands) */
@@ -108,7 +108,7 @@ static void firmware_load(const struct firmware *fw, void *context)
 		dev_err(&spi->dev,
 			"Error: No supported FPGA detected (JEDEC_ID=%08x)!\n",
 			jedec_id);
-		return;
+		goto out;
 	}
 
 	dev_info(&spi->dev, "FPGA %s detected\n", ecp3_dev[i].name);
@@ -121,7 +121,7 @@ static void firmware_load(const struct firmware *fw, void *context)
 	buffer = kzalloc(fw->size + 8, GFP_KERNEL);
 	if (!buffer) {
 		dev_err(&spi->dev, "Error: Can't allocate memory!\n");
-		return;
+		goto out;
 	}
 
 	/*
@@ -160,7 +160,7 @@ static void firmware_load(const struct firmware *fw, void *context)
 			"Error: Timeout waiting for FPGA to clear (status=%08x)!\n",
 			status);
 		kfree(buffer);
-		return;
+		goto out;
 	}
 
 	dev_info(&spi->dev, "Configuring the FPGA...\n");
@@ -186,7 +186,7 @@ static void firmware_load(const struct firmware *fw, void *context)
 	release_firmware(fw);
 
 	kfree(buffer);
-
+out:
 	complete(&data->fw_loaded);
 }
 
Signature · 1 line
2.34.1
author maintainer
#83 lore raw

PATCH 83/186 mips: lantiq: add support for clk_set_parent()

In reply to Greg Kroah-Hartman

From: Randy Dunlap <[email protected]>

[ Upstream commit 76f66dfd60dc5d2f9dec22d99091fea1035c5d03 ]

Provide a simple implementation of clk_set_parent() in the lantiq subarch so that callers of it will build without errors.

Fixes these build errors:

ERROR: modpost: "clk_set_parent" [sound/soc/jz4740/snd-soc-jz4740-i2s.ko] undefined!
ERROR: modpost: "clk_set_parent" [sound/soc/atmel/snd-soc-atmel-i2s.ko] undefined!

Fixes 171bb2f19ed6 ("MIPS: Lantiq: Add initial support for Lantiq SoCs")

[email protected] --cc="John Crispin <[email protected]>" --cc="Jonathan Cameron <[email protected]>" --cc="Russell King <[email protected]>" --cc="Andy Shevchenko <[email protected]>" [email protected] --to="Thomas Bogendoerfer <[email protected]>"

---
 arch/mips/lantiq/clk.c | 6 ++++++
 1 file changed, 6 insertions(+)
arch/mips/lantiq/clk.c +6 -0
index a8e309dcd38d7..f5fab99d1751c 100644
@@ -166,6 +166,12 @@ struct clk *clk_get_parent(struct clk *clk)
 }
 EXPORT_SYMBOL(clk_get_parent);
 
+int clk_set_parent(struct clk *clk, struct clk *parent)
+{
+	return 0;
+}
+EXPORT_SYMBOL(clk_set_parent);
+
 static inline u32 get_counter_resolution(void)
 {
 	u32 res;
Signature · 1 line
2.34.1
author maintainer
#84 lore raw

PATCH 84/186 mips: bcm63xx: add support for clk_set_parent()

In reply to Greg Kroah-Hartman

From: Randy Dunlap <[email protected]>

[ Upstream commit 6f03055d508ff4feb8db02ba3df9303a1db8d381 ]

The MIPS BMC63XX subarch does not provide/support clk_set_parent(). This causes build errors in a few drivers, so add a simple implementation of that function so that callers of it will build without errors.

Fixes these build errors:

ERROR: modpost: "clk_set_parent" [sound/soc/jz4740/snd-soc-jz4740-i2s.ko] undefined!
ERROR: modpost: "clk_set_parent" [sound/soc/atmel/snd-soc-atmel-i2s.ko] undefined!

Fixes e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs." )
---
 arch/mips/bcm63xx/clk.c | 6 ++++++
 1 file changed, 6 insertions(+)
arch/mips/bcm63xx/clk.c +6 -0
index d2a5054b0492b..73f2534b9676d 100644
@@ -343,6 +343,12 @@ struct clk *clk_get_parent(struct clk *clk)
 }
 EXPORT_SYMBOL(clk_get_parent);
 
+int clk_set_parent(struct clk *clk, struct clk *parent)
+{
+	return 0;
+}
+EXPORT_SYMBOL(clk_set_parent);
+
 unsigned long clk_get_rate(struct clk *clk)
 {
 	if (!clk)
Signature · 1 line
2.34.1
author maintainer
#85 lore raw

PATCH 85/186 RDMA/cxgb4: Set queue pair state when being queried

In reply to Greg Kroah-Hartman

From: Kamal Heib <[email protected]>

[ Upstream commit e375b9c92985e409c4bb95dd43d34915ea7f5e28 ]

The API for ib_query_qp requires the driver to set cur_qp_state on return, add the missing set.

---
 drivers/infiniband/hw/cxgb4/qp.c | 1 +
 1 file changed, 1 insertion(+)
drivers/infiniband/hw/cxgb4/qp.c +1 -0
index 3255615807299..225d4466fcb24 100644
@@ -2115,6 +2115,7 @@ int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 	memset(attr, 0, sizeof *attr);
 	memset(init_attr, 0, sizeof *init_attr);
 	attr->qp_state = to_ib_qp_state(qhp->attr.state);
+	attr->cur_qp_state = to_ib_qp_state(qhp->attr.state);
 	init_attr->cap.max_send_wr = qhp->attr.sq_num_entries;
 	init_attr->cap.max_recv_wr = qhp->attr.rq_num_entries;
 	init_attr->cap.max_send_sge = qhp->attr.sq_max_sges;
Signature · 1 line
2.34.1
author maintainer
#86 lore raw

PATCH 86/186 Bluetooth: Fix debugfs entry leak in hci_register_dev()

In reply to Greg Kroah-Hartman

From: Wei Yongjun <[email protected]>

[ Upstream commit 5a4bb6a8e981d3d0d492aa38412ee80b21033177 ]

Fault injection test report debugfs entry leak as follows:

debugfs: Directory 'hci0' with parent 'bluetooth' already present!

When register_pm_notifier() failed in hci_register_dev(), the debugfs create by debugfs_create_dir() do not removed in the error handing path.

Add the remove debugfs code to fix it.

---
 net/bluetooth/hci_core.c | 1 +
 1 file changed, 1 insertion(+)
net/bluetooth/hci_core.c +1 -0
index 1906adfd553ad..687b4d0e4c673 100644
@@ -3183,6 +3183,7 @@ int hci_register_dev(struct hci_dev *hdev)
 	return id;
 
 err_wqueue:
+	debugfs_remove_recursive(hdev->debugfs);
 	destroy_workqueue(hdev->workqueue);
 	destroy_workqueue(hdev->req_workqueue);
 err:
Signature · 1 line
2.34.1
author maintainer
#87 lore raw

PATCH 87/186 fs: dlm: filter user dlm messages for kernel locks

In reply to Greg Kroah-Hartman

From: Alexander Aring <[email protected]>

[ Upstream commit 6c2e3bf68f3e5e5a647aa52be246d5f552d7496d ]

This patch fixes the following crash by receiving a invalid message:

[  160.672220] ==================================================================
[  160.676206] BUG: KASAN: user-memory-access in dlm_user_add_ast+0xc3/0x370
[  160.679659] Read of size 8 at addr 00000000deadbeef by task kworker/u32:13/319
[  160.681447]
[  160.681824] CPU: 10 PID: 319 Comm: kworker/u32:13 Not tainted 5.14.0-rc2+ #399
[  160.683472] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.14.0-1.module+el8.6.0+12648+6ede71a5 04/01/2014
[  160.685574] Workqueue: dlm_recv process_recv_sockets
[  160.686721] Call Trace:
[  160.687310]  dump_stack_lvl+0x56/0x6f
[  160.688169]  ? dlm_user_add_ast+0xc3/0x370
[  160.689116]  kasan_report.cold.14+0x116/0x11b
[  160.690138]  ? dlm_user_add_ast+0xc3/0x370
[  160.690832]  dlm_user_add_ast+0xc3/0x370
[  160.691502]  _receive_unlock_reply+0x103/0x170
[  160.692241]  _receive_message+0x11df/0x1ec0
[  160.692926]  ? rcu_read_lock_sched_held+0xa1/0xd0
[  160.693700]  ? rcu_read_lock_bh_held+0xb0/0xb0
[  160.694427]  ? lock_acquire+0x175/0x400
[  160.695058]  ? do_purge.isra.51+0x200/0x200
[  160.695744]  ? lock_acquired+0x360/0x5d0
[  160.696400]  ? lock_contended+0x6a0/0x6a0
[  160.697055]  ? lock_release+0x21d/0x5e0
[  160.697686]  ? lock_is_held_type+0xe0/0x110
[  160.698352]  ? lock_is_held_type+0xe0/0x110
[  160.699026]  ? ___might_sleep+0x1cc/0x1e0
[  160.699698]  ? dlm_wait_requestqueue+0x94/0x140
[  160.700451]  ? dlm_process_requestqueue+0x240/0x240
[  160.701249]  ? down_write_killable+0x2b0/0x2b0
[  160.701988]  ? do_raw_spin_unlock+0xa2/0x130
[  160.702690]  dlm_receive_buffer+0x1a5/0x210
[  160.703385]  dlm_process_incoming_buffer+0x726/0x9f0
[  160.704210]  receive_from_sock+0x1c0/0x3b0
[  160.704886]  ? dlm_tcp_shutdown+0x30/0x30
[  160.705561]  ? lock_acquire+0x175/0x400
[  160.706197]  ? rcu_read_lock_sched_held+0xa1/0xd0
[  160.706941]  ? rcu_read_lock_bh_held+0xb0/0xb0
[  160.707681]  process_recv_sockets+0x32/0x40
[  160.708366]  process_one_work+0x55e/0xad0
[  160.709045]  ? pwq_dec_nr_in_flight+0x110/0x110
[  160.709820]  worker_thread+0x65/0x5e0
[  160.710423]  ? process_one_work+0xad0/0xad0
[  160.711087]  kthread+0x1ed/0x220
[  160.711628]  ? set_kthread_struct+0x80/0x80
[  160.712314]  ret_from_fork+0x22/0x30

The issue is that we received a DLM message for a user lock but the destination lock is a kernel lock. Note that the address which is trying to derefence is 00000000deadbeef, which is in a kernel lock lkb->lkb_astparam, this field should never be derefenced by the DLM kernel stack. In case of a user lock lkb->lkb_astparam is lkb->lkb_ua (memory is shared by a union field). The struct lkb_ua will be handled by the DLM kernel stack but on a kernel lock it will contain invalid data and ends in most likely crashing the kernel.

It can be reproduced with two cluster nodes.

node 2:
dlm_tool join test
echo "862 fooobaar 1 2 1" > /sys/kernel/debug/dlm/test_locks echo "862 3 1" > /sys/kernel/debug/dlm/test_waiters

node 1:
dlm_tool join test

python:

foo = DLM(h_cmd=3, o_nextcmd=1, h_nodeid=1, h_lockspace=0x77222027, \
          m_type=7, m_flags=0x1, m_remid=0x862, m_result=0xFFFEFFFE)

newFile = open("/sys/kernel/debug/dlm/comms/2/rawmsg", "wb") newFile.write(bytes(foo))

---
 fs/dlm/lock.c | 9 +++++++++
 1 file changed, 9 insertions(+)
fs/dlm/lock.c +9 -0
index 21643d2b3fee4..8364f170fbb82 100644
@@ -3974,6 +3974,14 @@ static int validate_message(struct dlm_lkb *lkb, struct dlm_message *ms)
 	int from = ms->m_header.h_nodeid;
 	int error = 0;
 
+	/* currently mixing of user/kernel locks are not supported */
+	if (ms->m_flags & DLM_IFL_USER && ~lkb->lkb_flags & DLM_IFL_USER) {
+		log_error(lkb->lkb_resource->res_ls,
+			  "got user dlm message for a kernel lock");
+		error = -EINVAL;
+		goto out;
+	}
+
 	switch (ms->m_type) {
 	case DLM_MSG_CONVERT:
 	case DLM_MSG_UNLOCK:
@@ -4002,6 +4010,7 @@ static int validate_message(struct dlm_lkb *lkb, struct dlm_message *ms)
 		error = -EINVAL;
 	}
 
+out:
 	if (error)
 		log_error(lkb->lkb_resource->res_ls,
 			  "ignore invalid message %d from %d %x %x %x %d",
Signature · 1 line
2.34.1
author maintainer
#88 lore raw

PATCH 88/186 ar5523: Fix null-ptr-deref with unexpected WDCMSG_TARGET_START reply

In reply to Greg Kroah-Hartman

From: Zekun Shen <[email protected]>

[ Upstream commit ae80b6033834342601e99f74f6a62ff5092b1cee ]

Unexpected WDCMSG_TARGET_START replay can lead to null-ptr-deref when ar->tx_cmd->odata is NULL. The patch adds a null check to prevent such case.

KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
 ar5523_cmd+0x46a/0x581 [ar5523]
 ar5523_probe.cold+0x1b7/0x18da [ar5523]
 ? ar5523_cmd_rx_cb+0x7a0/0x7a0 [ar5523]
 ? __pm_runtime_set_status+0x54a/0x8f0
 ? _raw_spin_trylock_bh+0x120/0x120
 ? pm_runtime_barrier+0x220/0x220
 ? __pm_runtime_resume+0xb1/0xf0
 usb_probe_interface+0x25b/0x710
 really_probe+0x209/0x5d0
 driver_probe_device+0xc6/0x1b0
 device_driver_attach+0xe2/0x120

I found the bug using a custome USBFuzz port. It's a research work to fuzz USB stack/drivers. I modified it to fuzz ath9k driver only, providing hand-crafted usb descriptors to QEMU.

After fixing the code (fourth byte in usb packet) to WDCMSG_TARGET_START, I got the null-ptr-deref bug. I believe the bug is triggerable whenever cmd->odata is NULL. After patching, I tested with the same input and no longer see the KASAN report.

This was NOT tested on a real device.

---
 drivers/net/wireless/ath/ar5523/ar5523.c | 4 ++++
 1 file changed, 4 insertions(+)
drivers/net/wireless/ath/ar5523/ar5523.c +4 -0
index e1a1d27427cc9..bf43244f051c5 100644
@@ -153,6 +153,10 @@ static void ar5523_cmd_rx_cb(struct urb *urb)
 			ar5523_err(ar, "Invalid reply to WDCMSG_TARGET_START");
 			return;
 		}
+		if (!cmd->odata) {
+			ar5523_err(ar, "Unexpected WDCMSG_TARGET_START reply");
+			return;
+		}
 		memcpy(cmd->odata, hdr + 1, sizeof(u32));
 		cmd->olen = sizeof(u32);
 		cmd->res = 0;
Signature · 1 line
2.34.1
author maintainer
#89 lore raw

PATCH 89/186 drm/nouveau/pmu/gm200-: avoid touching PMU outside of DEVINIT/PREOS/ACR

In reply to Greg Kroah-Hartman

From: Ben Skeggs <[email protected]>

[ Upstream commit 1d2271d2fb85e54bfc9630a6c30ac0feb9ffb983 ]

There have been reports of the WFI timing out on some boards, and a patch was proposed to just remove it. This stuff is rather fragile, and I believe the WFI might be needed with our FW prior to GM200.

However, we probably should not be touching PMU during init on GPUs where we depend on NVIDIA FW, outside of limited circumstances, so this should be a somewhat safer change that achieves the desired result.

---
 .../gpu/drm/nouveau/nvkm/subdev/pmu/base.c    | 37 +++++++++++--------
 1 file changed, 21 insertions(+), 16 deletions(-)
drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c +21 -16
index ce70a193caa7f..8cf3d1b4662de 100644
@@ -70,20 +70,13 @@ nvkm_pmu_fini(struct nvkm_subdev *subdev, bool suspend)
 	return 0;
 }
 
-static int
+static void
 nvkm_pmu_reset(struct nvkm_pmu *pmu)
 {
 	struct nvkm_device *device = pmu->subdev.device;
 
 	if (!pmu->func->enabled(pmu))
-		return 0;
-
-	/* Inhibit interrupts, and wait for idle. */
-	nvkm_wr32(device, 0x10a014, 0x0000ffff);
-	nvkm_msec(device, 2000,
-		if (!nvkm_rd32(device, 0x10a04c))
-			break;
-	);
+		return;
 
 	/* Reset. */
 	if (pmu->func->reset)
@@ -94,25 +87,37 @@ nvkm_pmu_reset(struct nvkm_pmu *pmu)
 		if (!(nvkm_rd32(device, 0x10a10c) & 0x00000006))
 			break;
 	);
-
-	return 0;
 }
 
 static int
 nvkm_pmu_preinit(struct nvkm_subdev *subdev)
 {
 	struct nvkm_pmu *pmu = nvkm_pmu(subdev);
-	return nvkm_pmu_reset(pmu);
+	nvkm_pmu_reset(pmu);
+	return 0;
 }
 
 static int
 nvkm_pmu_init(struct nvkm_subdev *subdev)
 {
 	struct nvkm_pmu *pmu = nvkm_pmu(subdev);
-	int ret = nvkm_pmu_reset(pmu);
-	if (ret == 0 && pmu->func->init)
-		ret = pmu->func->init(pmu);
-	return ret;
+	struct nvkm_device *device = pmu->subdev.device;
+
+	if (!pmu->func->init)
+		return 0;
+
+	if (pmu->func->enabled(pmu)) {
+		/* Inhibit interrupts, and wait for idle. */
+		nvkm_wr32(device, 0x10a014, 0x0000ffff);
+		nvkm_msec(device, 2000,
+			if (!nvkm_rd32(device, 0x10a04c))
+				break;
+		);
+
+		nvkm_pmu_reset(pmu);
+	}
+
+	return pmu->func->init(pmu);
 }
 
 static int
Signature · 1 line
2.34.1
author maintainer
#90 lore raw

PATCH 90/186 usb: gadget: f_fs: Use stream_open() for endpoint files

In reply to Greg Kroah-Hartman

From: Pavankumar Kondeti <[email protected]>

[ Upstream commit c76ef96fc00eb398c8fc836b0eb2f82bcc619dc7 ]

Function fs endpoint file operations are synchronized via an interruptible mutex wait. However we see threads that do ep file operations concurrently are getting blocked for the mutex lock in __fdget_pos(). This is an uninterruptible wait and we see hung task warnings and kernel panic if hung_task_panic systcl is enabled if host does not send/receive the data for long time.

The reason for threads getting blocked in __fdget_pos() is due to the file position protection introduced by the commit 9c225f2655e3 ("vfs: atomic f_pos accesses as per POSIX"). Since function fs endpoint files does not have the notion of the file position, switch to the stream mode. This will bypass the file position mutex and threads will be blocked in interruptible state for the function fs mutex.

It should not affects user space as we are only changing the task state changes the task state from UNINTERRUPTIBLE to INTERRUPTIBLE while waiting for the USB transfers to be finished. However there is a slight change to the O_NONBLOCK behavior. Earlier threads that are using O_NONBLOCK are also getting blocked inside fdget_pos(). Now they reach to function fs and error code is returned. The non blocking behavior is actually honoured now.

---
 drivers/usb/gadget/function/f_fs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/usb/gadget/function/f_fs.c +2 -2
index 6029f9b00b4a0..61795025f11b6 100644
@@ -608,7 +608,7 @@ static int ffs_ep0_open(struct inode *inode, struct file *file)
 	file->private_data = ffs;
 	ffs_data_opened(ffs);
 
-	return 0;
+	return stream_open(inode, file);
 }
 
 static int ffs_ep0_release(struct inode *inode, struct file *file)
@@ -1072,7 +1072,7 @@ ffs_epfile_open(struct inode *inode, struct file *file)
 	file->private_data = epfile;
 	ffs_data_opened(epfile->ffs);
 
-	return 0;
+	return stream_open(inode, file);
 }
 
 static int ffs_aio_cancel(struct kiocb *kiocb)
Signature · 1 line
2.34.1
author maintainer
#91 lore raw

PATCH 91/186 HID: apple: Do not reset quirks when the Fn key is not found

In reply to Greg Kroah-Hartman

From: José Expósito <[email protected]>

[ Upstream commit a5fe7864d8ada170f19cc47d176bf8260ffb4263 ]

When a keyboard without a function key is detected, instead of removing all quirks, remove only the APPLE_HAS_FN quirk.

---
 drivers/hid/hid-apple.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/hid/hid-apple.c +1 -1
index 4e3dd3f55a963..80ecbf14d3c82 100644
@@ -392,7 +392,7 @@ static int apple_input_configured(struct hid_device *hdev,
 
 	if ((asc->quirks & APPLE_HAS_FN) && !asc->fn_found) {
 		hid_info(hdev, "Fn key not found (Apple Wireless Keyboard clone?), disabling Fn key handling\n");
-		asc->quirks = 0;
+		asc->quirks &= ~APPLE_HAS_FN;
 	}
 
 	return 0;
Signature · 1 line
2.34.1
author maintainer
#92 lore raw

PATCH 92/186 media: b2c2: Add missing check in flexcop_pci_isr:

In reply to Greg Kroah-Hartman

From: Zheyu Ma <[email protected]>

[ Upstream commit b13203032e679674c7c518f52a7ec0801ca3a829 ]

A out-of-bounds bug can be triggered by an interrupt, the reason for this bug is the lack of checking of register values.

In flexcop_pci_isr, the driver reads value from a register and uses it as a dma address. Finally, this address will be passed to the count parameter of find_next_packet. If this value is larger than the size of dma, the index of buffer will be out-of-bounds.

Fix this by adding a check after reading the value of the register.

The following KASAN report reveals it:

BUG: KASAN: slab-out-of-bounds in find_next_packet
drivers/media/dvb-core/dvb_demux.c:528 [inline]
BUG: KASAN: slab-out-of-bounds in _dvb_dmx_swfilter
drivers/media/dvb-core/dvb_demux.c:572 [inline]
BUG: KASAN: slab-out-of-bounds in dvb_dmx_swfilter+0x3fa/0x420
drivers/media/dvb-core/dvb_demux.c:603
Read of size 1 at addr ffff8880608c00a0 by task swapper/2/0

CPU: 2 PID: 0 Comm: swapper/2 Not tainted 4.19.177-gdba4159c14ef #25
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xec/0x156 lib/dump_stack.c:118
 print_address_description+0x78/0x290 mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report+0x25b/0x380 mm/kasan/report.c:412
 __asan_report_load1_noabort+0x19/0x20 mm/kasan/report.c:430
 find_next_packet drivers/media/dvb-core/dvb_demux.c:528 [inline]
 _dvb_dmx_swfilter drivers/media/dvb-core/dvb_demux.c:572 [inline]
 dvb_dmx_swfilter+0x3fa/0x420 drivers/media/dvb-core/dvb_demux.c:603
 flexcop_pass_dmx_data+0x2e/0x40 drivers/media/common/b2c2/flexcop.c:167
 flexcop_pci_isr+0x3d1/0x5d0 drivers/media/pci/b2c2/flexcop-pci.c:212
 __handle_irq_event_percpu+0xfb/0x770 kernel/irq/handle.c:149
 handle_irq_event_percpu+0x79/0x150 kernel/irq/handle.c:189
 handle_irq_event+0xac/0x140 kernel/irq/handle.c:206
 handle_fasteoi_irq+0x232/0x5c0 kernel/irq/chip.c:725
 generic_handle_irq_desc include/linux/irqdesc.h:155 [inline]
 handle_irq+0x230/0x3a0 arch/x86/kernel/irq_64.c:87
 do_IRQ+0xa7/0x1e0 arch/x86/kernel/irq.c:247
 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:670
 </IRQ>
RIP: 0010:native_safe_halt+0x28/0x30 arch/x86/include/asm/irqflags.h:61
Code: 00 00 55 be 04 00 00 00 48 c7 c7 00 62 2f 8c 48 89 e5 e8 fb 31

e8 f8 8b 05 75 4f 8e 03 85 c0 7e 07 0f 00 2d 8a 61 66 00 fb f4 <5d> c3 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41
RSP: 0018:ffff88806b71fcc8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffde
RAX: 0000000000000000 RBX: ffffffff8bde44c8 RCX: ffffffff88a11285
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8c2f6200
RBP: ffff88806b71fcc8 R08: fffffbfff185ec40 R09: fffffbfff185ec40
R10: 0000000000000001 R11: fffffbfff185ec40 R12: 0000000000000002
R13: ffffffff8be9d6e0 R14: 0000000000000000 R15: 0000000000000000

 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
 default_idle+0x6f/0x360 arch/x86/kernel/process.c:557
 arch_cpu_idle+0xf/0x20 arch/x86/kernel/process.c:548
 default_idle_call+0x3b/0x60 kernel/sched/idle.c:93
 cpuidle_idle_call kernel/sched/idle.c:153 [inline]
 do_idle+0x2ab/0x3c0 kernel/sched/idle.c:263
 cpu_startup_entry+0xcb/0xe0 kernel/sched/idle.c:369
 start_secondary+0x3b8/0x4e0 arch/x86/kernel/smpboot.c:271
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243

Allocated by task 1:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:553
 kasan_slab_alloc+0x11/0x20 mm/kasan/kasan.c:490
 slab_post_alloc_hook mm/slab.h:445 [inline]
 slab_alloc_node mm/slub.c:2741 [inline]
 slab_alloc mm/slub.c:2749 [inline]
 kmem_cache_alloc+0xeb/0x280 mm/slub.c:2754
 kmem_cache_zalloc include/linux/slab.h:699 [inline]
 __kernfs_new_node+0xe2/0x6f0 fs/kernfs/dir.c:633
 kernfs_new_node+0x9a/0x120 fs/kernfs/dir.c:693
 __kernfs_create_file+0x5f/0x340 fs/kernfs/file.c:992
 sysfs_add_file_mode_ns+0x22a/0x4e0 fs/sysfs/file.c:306
 create_files fs/sysfs/group.c:63 [inline]
 internal_create_group+0x34e/0xc30 fs/sysfs/group.c:147
 sysfs_create_group fs/sysfs/group.c:173 [inline]
 sysfs_create_groups+0x9c/0x140 fs/sysfs/group.c:200
 driver_add_groups+0x3e/0x50 drivers/base/driver.c:129
 bus_add_driver+0x3a5/0x790 drivers/base/bus.c:684
 driver_register+0x1cd/0x410 drivers/base/driver.c:170
 __pci_register_driver+0x197/0x200 drivers/pci/pci-driver.c:1411
 cx88_audio_pci_driver_init+0x23/0x25 drivers/media/pci/cx88/cx88-alsa.c:
 1017
 do_one_initcall+0xe0/0x610 init/main.c:884
 do_initcall_level init/main.c:952 [inline]
 do_initcalls init/main.c:960 [inline]
 do_basic_setup init/main.c:978 [inline]
 kernel_init_freeable+0x4d0/0x592 init/main.c:1145
 kernel_init+0x18/0x190 init/main.c:1062
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Freed by task 0:

(stack is not available)

The buggy address belongs to the object at ffff8880608c0000
 which belongs to the cache kernfs_node_cache of size 160
The buggy address is located 0 bytes to the right of
 160-byte region [ffff8880608c0000, ffff8880608c00a0)
The buggy address belongs to the page:
page:ffffea0001823000 count:1 mapcount:0 mapping:ffff88806bed1e00
index:0x0 compound_mapcount: 0
flags: 0x100000000008100(slab|head)
raw: 0100000000008100 dead000000000100 dead000000000200 ffff88806bed1e00
raw: 0000000000000000 0000000000240024 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880608bff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880608c0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880608c0080: 00 00 00 00 fc fc fc fc fc fc fc fc 00 00 00 00
                               ^
 ffff8880608c0100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880608c0180: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
==================================================================
---
 drivers/media/pci/b2c2/flexcop-pci.c | 3 +++
 1 file changed, 3 insertions(+)
drivers/media/pci/b2c2/flexcop-pci.c +3 -0
index cc6527e355373..b7d8e34ffd5da 100644
@@ -184,6 +184,8 @@ static irqreturn_t flexcop_pci_isr(int irq, void *dev_id)
 		dma_addr_t cur_addr =
 			fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2;
 		u32 cur_pos = cur_addr - fc_pci->dma[0].dma_addr0;
+		if (cur_pos > fc_pci->dma[0].size * 2)
+			goto error;
 
 		deb_irq("%u irq: %08x cur_addr: %llx: cur_pos: %08x, last_cur_pos: %08x ",
 				jiffies_to_usecs(jiffies - fc_pci->last_irq),
@@ -224,6 +226,7 @@ static irqreturn_t flexcop_pci_isr(int irq, void *dev_id)
 		ret = IRQ_NONE;
 	}
 
+error:
 	spin_unlock_irqrestore(&fc_pci->irq_lock, flags);
 	return ret;
 }
Signature · 1 line
2.34.1
author maintainer
#93 lore raw

PATCH 93/186 ARM: imx: rename DEBUG_IMX21_IMX27_UART to DEBUG_IMX27_UART

In reply to Greg Kroah-Hartman

From: Lukas Bulwahn <[email protected]>

[ Upstream commit b0100bce4ff82ec1ccd3c1f3d339fd2df6a81784 ]

Since commit 4b563a066611 ("ARM: imx: Remove imx21 support"), the config DEBUG_IMX21_IMX27_UART is really only debug support for IMX27.

So, rename this option to DEBUG_IMX27_UART and adjust dependencies in Kconfig and rename the definitions to IMX27 as further clean-up.

This issue was discovered with ./scripts/checkkconfigsymbols.py, which reported that DEBUG_IMX21_IMX27_UART depends on the non-existing config SOC_IMX21.

---
 arch/arm/Kconfig.debug            | 14 +++++++-------
 arch/arm/include/debug/imx-uart.h | 18 +++++++++---------
 2 files changed, 16 insertions(+), 16 deletions(-)
arch/arm/Kconfig.debug +7 -7
index d6cf18a0cb0a9..b70ed4c7691e5 100644
@@ -363,12 +363,12 @@ choice
 		  Say Y here if you want kernel low-level debugging support
 		  on i.MX25.
 
-	config DEBUG_IMX21_IMX27_UART
-		bool "i.MX21 and i.MX27 Debug UART"
-		depends on SOC_IMX21 || SOC_IMX27
+	config DEBUG_IMX27_UART
+		bool "i.MX27 Debug UART"
+		depends on SOC_IMX27
 		help
 		  Say Y here if you want kernel low-level debugging support
-		  on i.MX21 or i.MX27.
+		  on i.MX27.
 
 	config DEBUG_IMX28_UART
 		bool "i.MX28 Debug UART"
@@ -1398,7 +1398,7 @@ config DEBUG_IMX_UART_PORT
 	int "i.MX Debug UART Port Selection"
 	depends on DEBUG_IMX1_UART || \
 		   DEBUG_IMX25_UART || \
-		   DEBUG_IMX21_IMX27_UART || \
+		   DEBUG_IMX27_UART || \
 		   DEBUG_IMX31_UART || \
 		   DEBUG_IMX35_UART || \
 		   DEBUG_IMX50_UART || \
@@ -1451,12 +1451,12 @@ config DEBUG_LL_INCLUDE
 	default "debug/icedcc.S" if DEBUG_ICEDCC
 	default "debug/imx.S" if DEBUG_IMX1_UART || \
 				 DEBUG_IMX25_UART || \
-				 DEBUG_IMX21_IMX27_UART || \
+				 DEBUG_IMX27_UART || \
 				 DEBUG_IMX31_UART || \
 				 DEBUG_IMX35_UART || \
 				 DEBUG_IMX50_UART || \
 				 DEBUG_IMX51_UART || \
-				 DEBUG_IMX53_UART ||\
+				 DEBUG_IMX53_UART || \
 				 DEBUG_IMX6Q_UART || \
 				 DEBUG_IMX6SL_UART || \
 				 DEBUG_IMX6SX_UART || \
arch/arm/include/debug/imx-uart.h +9 -9
index bce58e975ad1f..c750cc9876f6d 100644
@@ -14,13 +14,6 @@
 #define IMX1_UART_BASE_ADDR(n)	IMX1_UART##n##_BASE_ADDR
 #define IMX1_UART_BASE(n)	IMX1_UART_BASE_ADDR(n)
 
-#define IMX21_UART1_BASE_ADDR	0x1000a000
-#define IMX21_UART2_BASE_ADDR	0x1000b000
-#define IMX21_UART3_BASE_ADDR	0x1000c000
-#define IMX21_UART4_BASE_ADDR	0x1000d000
-#define IMX21_UART_BASE_ADDR(n)	IMX21_UART##n##_BASE_ADDR
-#define IMX21_UART_BASE(n)	IMX21_UART_BASE_ADDR(n)
-
 #define IMX25_UART1_BASE_ADDR	0x43f90000
 #define IMX25_UART2_BASE_ADDR	0x43f94000
 #define IMX25_UART3_BASE_ADDR	0x5000c000
@@ -29,6 +22,13 @@
 #define IMX25_UART_BASE_ADDR(n)	IMX25_UART##n##_BASE_ADDR
 #define IMX25_UART_BASE(n)	IMX25_UART_BASE_ADDR(n)
 
+#define IMX27_UART1_BASE_ADDR	0x1000a000
+#define IMX27_UART2_BASE_ADDR	0x1000b000
+#define IMX27_UART3_BASE_ADDR	0x1000c000
+#define IMX27_UART4_BASE_ADDR	0x1000d000
+#define IMX27_UART_BASE_ADDR(n)	IMX27_UART##n##_BASE_ADDR
+#define IMX27_UART_BASE(n)	IMX27_UART_BASE_ADDR(n)
+
 #define IMX31_UART1_BASE_ADDR	0x43f90000
 #define IMX31_UART2_BASE_ADDR	0x43f94000
 #define IMX31_UART3_BASE_ADDR	0x5000c000
@@ -115,10 +115,10 @@
 
 #ifdef CONFIG_DEBUG_IMX1_UART
 #define UART_PADDR	IMX_DEBUG_UART_BASE(IMX1)
-#elif defined(CONFIG_DEBUG_IMX21_IMX27_UART)
-#define UART_PADDR	IMX_DEBUG_UART_BASE(IMX21)
 #elif defined(CONFIG_DEBUG_IMX25_UART)
 #define UART_PADDR	IMX_DEBUG_UART_BASE(IMX25)
+#elif defined(CONFIG_DEBUG_IMX27_UART)
+#define UART_PADDR	IMX_DEBUG_UART_BASE(IMX27)
 #elif defined(CONFIG_DEBUG_IMX31_UART)
 #define UART_PADDR	IMX_DEBUG_UART_BASE(IMX31)
 #elif defined(CONFIG_DEBUG_IMX35_UART)
Signature · 1 line
2.34.1
author maintainer
#94 lore raw

PATCH 94/186 mlxsw: pci: Add shutdown method in PCI driver

In reply to Greg Kroah-Hartman

From: Danielle Ratson <[email protected]>

[ Upstream commit c1020d3cf4752f61a6a413f632ea2ce2370e150d ]

On an arm64 platform with the Spectrum ASIC, after loading and executing a new kernel via kexec, the following trace [1] is observed. This seems to be caused by the fact that the device is not properly shutdown before executing the new kernel.

Fix this by implementing a shutdown method which mirrors the remove method, as recommended by the kexec maintainer [2][3].

[1]

BUG: Bad page state in process devlink pfn:22f73d
page:fffffe00089dcf40 refcount:-1 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x2ffff00000000000()
raw: 2ffff00000000000 0000000000000000 ffffffff089d0201 0000000000000000
raw: 0000000000000000 0000000000000000 ffffffffffffffff 0000000000000000
page dumped because: nonzero _refcount
Modules linked in:
CPU: 1 PID: 16346 Comm: devlink Tainted: G B 5.8.0-rc6-custom-273020-gac6b365b1bf5 #44
Hardware name: Marvell Armada 7040 TX4810M (DT)
Call trace:
 dump_backtrace+0x0/0x1d0
 show_stack+0x1c/0x28
 dump_stack+0xbc/0x118
 bad_page+0xcc/0xf8
 check_free_page_bad+0x80/0x88
 __free_pages_ok+0x3f8/0x418
 __free_pages+0x38/0x60
 kmem_freepages+0x200/0x2a8
 slab_destroy+0x28/0x68
 slabs_destroy+0x60/0x90
 ___cache_free+0x1b4/0x358
 kfree+0xc0/0x1d0
 skb_free_head+0x2c/0x38
 skb_release_data+0x110/0x1a0
 skb_release_all+0x2c/0x38
 consume_skb+0x38/0x130
 __dev_kfree_skb_any+0x44/0x50
 mlxsw_pci_rdq_fini+0x8c/0xb0
 mlxsw_pci_queue_fini.isra.0+0x28/0x58
 mlxsw_pci_queue_group_fini+0x58/0x88
 mlxsw_pci_aqs_fini+0x2c/0x60
 mlxsw_pci_fini+0x34/0x50
 mlxsw_core_bus_device_unregister+0x104/0x1d0
 mlxsw_devlink_core_bus_device_reload_down+0x2c/0x48
 devlink_reload+0x44/0x158
 devlink_nl_cmd_reload+0x270/0x290
 genl_rcv_msg+0x188/0x2f0
 netlink_rcv_skb+0x5c/0x118
 genl_rcv+0x3c/0x50
 netlink_unicast+0x1bc/0x278
 netlink_sendmsg+0x194/0x390
 __sys_sendto+0xe0/0x158
 __arm64_sys_sendto+0x2c/0x38
 el0_svc_common.constprop.0+0x70/0x168
 do_el0_svc+0x28/0x88
 el0_sync_handler+0x88/0x190
 el0_sync+0x140/0x180

[2]
https://www.mail-archive.com/[email protected]/msg1195432.html

[3]
https://patchwork.kernel.org/project/linux-scsi/patch/[email protected]/#20116693

---
 drivers/net/ethernet/mellanox/mlxsw/pci.c | 1 +
 1 file changed, 1 insertion(+)
drivers/net/ethernet/mellanox/mlxsw/pci.c +1 -0
index 6ef20e5cc77dd..de93c77148684 100644
@@ -1772,6 +1772,7 @@ int mlxsw_pci_driver_register(struct pci_driver *pci_driver)
 {
 	pci_driver->probe = mlxsw_pci_probe;
 	pci_driver->remove = mlxsw_pci_remove;
+	pci_driver->shutdown = mlxsw_pci_remove;
 	return pci_register_driver(pci_driver);
 }
 EXPORT_SYMBOL(mlxsw_pci_driver_register);
Signature · 1 line
2.34.1
author maintainer
#95 lore raw

PATCH 95/186 drm/bridge: megachips: Ensure both bridges are probed before registration

In reply to Greg Kroah-Hartman

From: Martyn Welch <[email protected]>

[ Upstream commit 11632d4aa2b3f126790e81a4415d6c23103cf8bb ]

In the configuration used by the b850v3, the STDP2690 is used to read EDID data whilst it's the STDP4028 which can detect when monitors are connected.

This can result in problems at boot with monitors connected when the STDP4028 is probed first, a monitor is detected and an attempt is made to read the EDID data before the STDP2690 has probed:

[    3.795721] Unable to handle kernel NULL pointer dereference at virtual address 00000018
[    3.803845] pgd = (ptrval)
[    3.806581] [00000018] *pgd=00000000
[    3.810180] Internal error: Oops: 5 [#1] SMP ARM
[    3.814813] Modules linked in:
[    3.817879] CPU: 0 PID: 64 Comm: kworker/u4:1 Not tainted 5.15.0 #1
[    3.824161] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[    3.830705] Workqueue: events_unbound deferred_probe_work_func
[    3.836565] PC is at stdp2690_get_edid+0x44/0x19c
[    3.841286] LR is at ge_b850v3_lvds_get_modes+0x2c/0x5c
[    3.846526] pc : [<805eae10>]    lr : [<805eb138>]    psr: 80000013
[    3.852802] sp : 81c359d0  ip : 7dbb550b  fp : 81c35a1c
[    3.858037] r10: 81c73840  r9 : 81c73894  r8 : 816d9800
[    3.863270] r7 : 00000000  r6 : 81c34000  r5 : 00000000  r4 : 810c35f0
[    3.869808] r3 : 80e3e294  r2 : 00000080  r1 : 00000cc0  r0 : 81401180
[    3.876349] Flags: Nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    3.883499] Control: 10c5387d  Table: 1000404a  DAC: 00000051
[    3.889254] Register r0 information: slab kmem_cache start 81401180 pointer offset 0
[    3.897034] Register r1 information: non-paged memory
[    3.902097] Register r2 information: non-paged memory
[    3.907160] Register r3 information: non-slab/vmalloc memory
[    3.912832] Register r4 information: non-slab/vmalloc memory
[    3.918503] Register r5 information: NULL pointer
[    3.923217] Register r6 information: non-slab/vmalloc memory
[    3.928887] Register r7 information: NULL pointer
[    3.933601] Register r8 information: slab kmalloc-1k start 816d9800 pointer offset 0 size 1024
[    3.942244] Register r9 information: slab kmalloc-2k start 81c73800 pointer offset 148 size 2048
[    3.951058] Register r10 information: slab kmalloc-2k start 81c73800 pointer offset 64 size 2048
[    3.959873] Register r11 information: non-slab/vmalloc memory
[    3.965632] Register r12 information: non-paged memory
[    3.970781] Process kworker/u4:1 (pid: 64, stack limit = 0x(ptrval))
[    3.977148] Stack: (0x81c359d0 to 0x81c36000)
[    3.981517] 59c0:                                     80b2b668 80b2b5bc 000002e2 0000034e
[    3.989712] 59e0: 81c35a8c 816d98e8 81c35a14 7dbb550b 805bfcd0 810c35f0 81c73840 824addc0
[    3.997906] 5a00: 00001000 816d9800 81c73894 81c73840 81c35a34 81c35a20 805eb138 805eadd8
[    4.006099] 5a20: 810c35f0 00000045 81c35adc 81c35a38 80594188 805eb118 80d7c788 80dd1848
[    4.014292] 5a40: 00000000 81c35a50 80dca950 811194d3 80dca7c4 80dca944 80dca91c 816d9800
[    4.022485] 5a60: 81c34000 81c760a8 816d9800 80c58c98 810c35f0 816d98e8 00001000 00001000
[    4.030678] 5a80: 00000000 00000000 8017712c 81c60000 00000002 00000001 00000000 00000000
[    4.038870] 5aa0: 816d9900 816d9900 00000000 7dbb550b 805c700c 00000008 826282c8 826282c8
[    4.047062] 5ac0: 00001000 81e1ce40 00001000 00000002 81c35bf4 81c35ae0 805d9694 80593fc0
[    4.055255] 5ae0: 8017a970 80179ad8 00000179 00000000 81c35bcc 81c35b00 80177108 8017a950
[    4.063447] 5b00: 00000000 81c35b10 81c34000 00000000 81004fd8 81010a38 00000000 00000059
[    4.071639] 5b20: 816d98d4 81fbb718 00000013 826282c8 8017a940 81c35b40 81134448 00000400
[    4.079831] 5b40: 00000178 00000000 e063b9c1 00000000 c2000049 00000040 00000000 00000008
[    4.088024] 5b60: 82628300 82628380 00000000 00000000 81c34000 00000000 81fbb700 82628340
[    4.096216] 5b80: 826283c0 00001000 00000000 00000010 816d9800 826282c0 801766f8 00000000
[    4.104408] 5ba0: 00000000 81004fd8 00000049 00000000 00000000 00000001 80dcf940 80178de4
[    4.112601] 5bc0: 81c35c0c 7dbb550b 80178de4 81fbb700 00000010 00000010 810c35f4 81e1ce40
[    4.120793] 5be0: 81c40908 0000000c 81c35c64 81c35bf8 805a7f18 805d94a0 81c35c3c 816d9800
[    4.128985] 5c00: 00000010 81c34000 81c35c2c 81c35c18 8012fce0 805be90c 81c35c3c 81c35c28
[    4.137178] 5c20: 805be90c 80173210 81fbb600 81fbb6b4 81c35c5c 7dbb550b 81c35c64 81fbb700
[    4.145370] 5c40: 816d9800 00000010 810c35f4 81e1ce40 81c40908 0000000c 81c35c84 81c35c68
[    4.153565] 5c60: 805a8c78 805a7ed0 816d9800 81fbb700 00000010 00000000 81c35cac 81c35c88
[    4.161758] 5c80: 805a8dc4 805a8b68 816d9800 00000000 816d9800 00000000 8179f810 810c42d0
[    4.169950] 5ca0: 81c35ccc 81c35cb0 805e47b0 805a8d18 824aa240 81e1ea80 81c40908 81126b60
[    4.178144] 5cc0: 81c35d14 81c35cd0 8060db1c 805e46cc 81c35d14 81c35ce0 80dd90f8 810c4d58
[    4.186338] 5ce0: 80dd90dc 81fe9740 fffffffe 81fe9740 81e1ea80 00000000 810c4d6c 80c4b95c
[    4.194531] 5d00: 80dd9a3c 815c6810 81c35d34 81c35d18 8060dc9c 8060d8fc 8246b440 815c6800
[    4.202724] 5d20: 815c6810 eefd8e00 81c35d44 81c35d38 8060dd80 8060dbec 81c35d6c 81c35d48
[    4.210918] 5d40: 805e98a4 8060dd70 00000000 815c6810 810c45b0 81126e90 81126e90 80dd9a3c
[    4.219112] 5d60: 81c35d8c 81c35d70 80619574 805e9808 815c6810 00000000 810c45b0 81126e90
[    4.227305] 5d80: 81c35db4 81c35d90 806168dc 80619514 80625df0 80623c80 815c6810 810c45b0
[    4.235498] 5da0: 81c35e6c 815c6810 81c35dec 81c35db8 80616d04 80616800 81c35de4 81c35dc8
[    4.243691] 5dc0: 808382b0 80b2f444 8116e310 8116e314 81c35e6c 815c6810 00000003 80dd9a3c
[    4.251884] 5de0: 81c35e14 81c35df0 80616ec8 80616c60 00000001 810c45b0 81c35e6c 815c6810
[    4.260076] 5e00: 00000001 80dd9a3c 81c35e34 81c35e18 80617338 80616e90 00000000 81c35e6c
[    4.268269] 5e20: 80617284 81c34000 81c35e64 81c35e38 80614730 80617290 81c35e64 8171a06c
[    4.276461] 5e40: 81e220b8 7dbb550b 815c6810 81c34000 815c6854 81126e90 81c35e9c 81c35e68
[    4.284654] 5e60: 8061673c 806146a8 8060f5e0 815c6810 00000001 7dbb550b 00000000 810c5080
[    4.292847] 5e80: 810c5320 815c6810 81126e90 00000000 81c35eac 81c35ea0 80617554 80616650
[    4.301040] 5ea0: 81c35ecc 81c35eb0 80615694 80617544 810c5080 810c5080 810c5094 81126e90
[    4.309233] 5ec0: 81c35efc 81c35ed0 80615c6c 8061560c 80615bc0 810c50c0 817eeb00 81412800
[    4.317425] 5ee0: 814c3000 00000000 814c300d 81119a60 81c35f3c 81c35f00 80141488 80615bcc
[    4.325618] 5f00: 81c60000 81c34000 81c35f24 81c35f18 80143078 817eeb00 81412800 817eeb18
[    4.333811] 5f20: 81412818 81003d00 00000088 81412800 81c35f74 81c35f40 80141a48 80141298
[    4.342005] 5f40: 81c35f74 81c34000 801481ac 817efa40 817efc00 801417d8 817eeb00 00000000
[    4.350199] 5f60: 815a7e7c 81c34000 81c35fac 81c35f78 80149b1c 801417e4 817efc20 817efc20
[    4.358391] 5f80: ffffe000 817efa40 801499a8 00000000 00000000 00000000 00000000 00000000
[    4.366583] 5fa0: 00000000 81c35fb0 80100130 801499b4 00000000 00000000 00000000 00000000
[    4.374774] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    4.382966] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[    4.391155] Backtrace:
[    4.393613] [<805eadcc>] (stdp2690_get_edid) from [<805eb138>] (ge_b850v3_lvds_get_modes+0x2c/0x5c)
[    4.402691]  r10:81c73840 r9:81c73894 r8:816d9800 r7:00001000 r6:824addc0 r5:81c73840
[    4.410534]  r4:810c35f0
[    4.413073] [<805eb10c>] (ge_b850v3_lvds_get_modes) from [<80594188>] (drm_helper_probe_single_connector_modes+0x1d4/0x84c)
[    4.424240]  r5:00000045 r4:810c35f0
[    4.427822] [<80593fb4>] (drm_helper_probe_single_connector_modes) from [<805d9694>] (drm_client_modeset_probe+0x200/0x1384)
[    4.439074]  r10:00000002 r9:00001000 r8:81e1ce40 r7:00001000 r6:826282c8 r5:826282c8
[    4.446917]  r4:00000008
[    4.449455] [<805d9494>] (drm_client_modeset_probe) from [<805a7f18>] (__drm_fb_helper_initial_config_and_unlock+0x54/0x5b4)
[    4.460713]  r10:0000000c r9:81c40908 r8:81e1ce40 r7:810c35f4 r6:00000010 r5:00000010
[    4.468556]  r4:81fbb700
[    4.471095] [<805a7ec4>] (__drm_fb_helper_initial_config_and_unlock) from [<805a8c78>] (drm_fbdev_client_hotplug+0x11c/0x1b0)
[    4.482434]  r10:0000000c r9:81c40908 r8:81e1ce40 r7:810c35f4 r6:00000010 r5:816d9800
[    4.490276]  r4:81fbb700
[    4.492814] [<805a8b5c>] (drm_fbdev_client_hotplug) from [<805a8dc4>] (drm_fbdev_generic_setup+0xb8/0x1a4)
[    4.502494]  r7:00000000 r6:00000010 r5:81fbb700 r4:816d9800
[    4.508160] [<805a8d0c>] (drm_fbdev_generic_setup) from [<805e47b0>] (imx_drm_bind+0xf0/0x130)
[    4.516805]  r7:810c42d0 r6:8179f810 r5:00000000 r4:816d9800
[    4.522474] [<805e46c0>] (imx_drm_bind) from [<8060db1c>] (try_to_bring_up_master+0x22c/0x2f0)
[    4.531116]  r7:81126b60 r6:81c40908 r5:81e1ea80 r4:824aa240
[    4.536783] [<8060d8f0>] (try_to_bring_up_master) from [<8060dc9c>] (__component_add+0xbc/0x184)
[    4.545597]  r10:815c6810 r9:80dd9a3c r8:80c4b95c r7:810c4d6c r6:00000000 r5:81e1ea80
[    4.553440]  r4:81fe9740
[    4.555980] [<8060dbe0>] (__component_add) from [<8060dd80>] (component_add+0x1c/0x20)
[    4.563921]  r7:eefd8e00 r6:815c6810 r5:815c6800 r4:8246b440
[    4.569589] [<8060dd64>] (component_add) from [<805e98a4>] (dw_hdmi_imx_probe+0xa8/0xe8)
[    4.577702] [<805e97fc>] (dw_hdmi_imx_probe) from [<80619574>] (platform_probe+0x6c/0xc8)
[    4.585908]  r9:80dd9a3c r8:81126e90 r7:81126e90 r6:810c45b0 r5:815c6810 r4:00000000
[    4.593662] [<80619508>] (platform_probe) from [<806168dc>] (really_probe+0xe8/0x460)
[    4.601524]  r7:81126e90 r6:810c45b0 r5:00000000 r4:815c6810
[    4.607191] [<806167f4>] (really_probe) from [<80616d04>] (__driver_probe_device+0xb0/0x230)
[    4.615658]  r7:815c6810 r6:81c35e6c r5:810c45b0 r4:815c6810
[    4.621326] [<80616c54>] (__driver_probe_device) from [<80616ec8>] (driver_probe_device+0x44/0xe0)
[    4.630313]  r9:80dd9a3c r8:00000003 r7:815c6810 r6:81c35e6c r5:8116e314 r4:8116e310
[    4.638068] [<80616e84>] (driver_probe_device) from [<80617338>] (__device_attach_driver+0xb4/0x12c)
[    4.647227]  r9:80dd9a3c r8:00000001 r7:815c6810 r6:81c35e6c r5:810c45b0 r4:00000001
[    4.654981] [<80617284>] (__device_attach_driver) from [<80614730>] (bus_for_each_drv+0x94/0xd8)
[    4.663794]  r7:81c34000 r6:80617284 r5:81c35e6c r4:00000000
[    4.669461] [<8061469c>] (bus_for_each_drv) from [<8061673c>] (__device_attach+0xf8/0x190)
[    4.677753]  r7:81126e90 r6:815c6854 r5:81c34000 r4:815c6810
[    4.683419] [<80616644>] (__device_attach) from [<80617554>] (device_initial_probe+0x1c/0x20)
[    4.691971]  r8:00000000 r7:81126e90 r6:815c6810 r5:810c5320 r4:810c5080
[    4.698681] [<80617538>] (device_initial_probe) from [<80615694>] (bus_probe_device+0x94/0x9c)
[    4.707318] [<80615600>] (bus_probe_device) from [<80615c6c>] (deferred_probe_work_func+0xac/0xf0)
[    4.716305]  r7:81126e90 r6:810c5094 r5:810c5080 r4:810c5080
[    4.721973] [<80615bc0>] (deferred_probe_work_func) from [<80141488>] (process_one_work+0x1fc/0x54c)
[    4.731139]  r10:81119a60 r9:814c300d r8:00000000 r7:814c3000 r6:81412800 r5:817eeb00
[    4.738981]  r4:810c50c0 r3:80615bc0
[    4.742563] [<8014128c>] (process_one_work) from [<80141a48>] (worker_thread+0x270/0x570)
[    4.750765]  r10:81412800 r9:00000088 r8:81003d00 r7:81412818 r6:817eeb18 r5:81412800
[    4.758608]  r4:817eeb00
[    4.761147] [<801417d8>] (worker_thread) from [<80149b1c>] (kthread+0x174/0x190)
[    4.768574]  r10:81c34000 r9:815a7e7c r8:00000000 r7:817eeb00 r6:801417d8 r5:817efc00
[    4.776417]  r4:817efa40
[    4.778955] [<801499a8>] (kthread) from [<80100130>] (ret_from_fork+0x14/0x24)
[    4.786201] Exception stack(0x81c35fb0 to 0x81c35ff8)
[    4.791266] 5fa0:                                     00000000 00000000 00000000 00000000
[    4.799459] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    4.807651] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    4.814279]  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:801499a8
[    4.822120]  r4:817efa40
[    4.824664] Code: e3a02080 e593001c e3a01d33 e3a05000 (e5979018)

Split the registration from the STDP4028 probe routine and only perform registration once both the STDP4028 and STDP2690 have probed.

---
 .../bridge/megachips-stdpxxxx-ge-b850v3-fw.c  | 40 +++++++++++++------
 1 file changed, 28 insertions(+), 12 deletions(-)
drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c +28 -12
index 9f522372a4884..4ab7b034bfec8 100644
@@ -302,19 +302,10 @@ out:
 	mutex_unlock(&ge_b850v3_lvds_dev_mutex);
 }
 
-static int stdp4028_ge_b850v3_fw_probe(struct i2c_client *stdp4028_i2c,
-				       const struct i2c_device_id *id)
+static int ge_b850v3_register(void)
 {
+	struct i2c_client *stdp4028_i2c = ge_b850v3_lvds_ptr->stdp4028_i2c;
 	struct device *dev = &stdp4028_i2c->dev;
-	int ret;
-
-	ret = ge_b850v3_lvds_init(dev);
-
-	if (ret)
-		return ret;
-
-	ge_b850v3_lvds_ptr->stdp4028_i2c = stdp4028_i2c;
-	i2c_set_clientdata(stdp4028_i2c, ge_b850v3_lvds_ptr);
 
 	/* drm bridge initialization */
 	ge_b850v3_lvds_ptr->bridge.funcs = &ge_b850v3_lvds_funcs;
@@ -336,6 +327,27 @@ static int stdp4028_ge_b850v3_fw_probe(struct i2c_client *stdp4028_i2c,
 			"ge-b850v3-lvds-dp", ge_b850v3_lvds_ptr);
 }
 
+static int stdp4028_ge_b850v3_fw_probe(struct i2c_client *stdp4028_i2c,
+				       const struct i2c_device_id *id)
+{
+	struct device *dev = &stdp4028_i2c->dev;
+	int ret;
+
+	ret = ge_b850v3_lvds_init(dev);
+
+	if (ret)
+		return ret;
+
+	ge_b850v3_lvds_ptr->stdp4028_i2c = stdp4028_i2c;
+	i2c_set_clientdata(stdp4028_i2c, ge_b850v3_lvds_ptr);
+
+	/* Only register after both bridges are probed */
+	if (!ge_b850v3_lvds_ptr->stdp2690_i2c)
+		return 0;
+
+	return ge_b850v3_register();
+}
+
 static int stdp4028_ge_b850v3_fw_remove(struct i2c_client *stdp4028_i2c)
 {
 	ge_b850v3_lvds_remove();
@@ -379,7 +391,11 @@ static int stdp2690_ge_b850v3_fw_probe(struct i2c_client *stdp2690_i2c,
 	ge_b850v3_lvds_ptr->stdp2690_i2c = stdp2690_i2c;
 	i2c_set_clientdata(stdp2690_i2c, ge_b850v3_lvds_ptr);
 
-	return 0;
+	/* Only register after both bridges are probed */
+	if (!ge_b850v3_lvds_ptr->stdp4028_i2c)
+		return 0;
+
+	return ge_b850v3_register();
 }
 
 static int stdp2690_ge_b850v3_fw_remove(struct i2c_client *stdp2690_i2c)
Signature · 1 line
2.34.1
author maintainer
#96 lore raw

PATCH 96/186 gpiolib: acpi: Do not set the IRQ type if the IRQ is already in use

In reply to Greg Kroah-Hartman

From: Hans de Goede <[email protected]>

[ Upstream commit bdfd6ab8fdccd8b138837efff66f4a1911496378 ]

If the IRQ is already in use, then acpi_dev_gpio_irq_get_by() really should not change the type underneath the current owner.

I specifically hit an issue with this an a Chuwi Hi8 Super (CWI509) Bay Trail tablet, when the Boot OS selection in the BIOS is set to Android. In this case _STA for a MAX17047 ACPI I2C device wrongly returns 0xf and the _CRS resources for this device include a GpioInt pointing to a GPIO already in use by an _AEI handler, with a different type then specified in the _CRS for the MAX17047 device. Leading to the acpi_dev_gpio_irq_get() call done by the i2c-core-acpi.c code changing the type breaking the _AEI handler.

Now this clearly is a bug in the DSDT of this tablet (in Android mode), but in general calling irq_set_irq_type() on an IRQ which already is in use seems like a bad idea.

---
 drivers/gpio/gpiolib-acpi.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)
drivers/gpio/gpiolib-acpi.c +11 -4
index c380ce957d8da..60e394da97098 100644
@@ -943,10 +943,17 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
 			irq_flags = acpi_dev_get_irq_type(info.triggering,
 							  info.polarity);
 
-			/* Set type if specified and different than the current one */
-			if (irq_flags != IRQ_TYPE_NONE &&
-			    irq_flags != irq_get_trigger_type(irq))
-				irq_set_irq_type(irq, irq_flags);
+			/*
+			 * If the IRQ is not already in use then set type
+			 * if specified and different than the current one.
+			 */
+			if (can_request_irq(irq, irq_flags)) {
+				if (irq_flags != IRQ_TYPE_NONE &&
+				    irq_flags != irq_get_trigger_type(irq))
+					irq_set_irq_type(irq, irq_flags);
+			} else {
+				dev_dbg(&adev->dev, "IRQ %d already in use\n", irq);
+			}
 
 			return irq;
 		}
Signature · 1 line
2.34.1
author maintainer
#97 lore raw

PATCH 97/186 HSI: core: Fix return freed object in hsi_new_client

In reply to Greg Kroah-Hartman

From: Chengfeng Ye <[email protected]>

[ Upstream commit a1ee1c08fcd5af03187dcd41dcab12fd5b379555 ]

cl is freed on error of calling device_register, but this object is return later, which will cause uaf issue. Fix it by return NULL on error.

---
 drivers/hsi/hsi_core.c | 1 +
 1 file changed, 1 insertion(+)
drivers/hsi/hsi_core.c +1 -0
index 71895da63810b..daf2de837a30a 100644
@@ -115,6 +115,7 @@ struct hsi_client *hsi_new_client(struct hsi_port *port,
 	if (device_register(&cl->device) < 0) {
 		pr_err("hsi: failed to register client: %s\n", info->name);
 		put_device(&cl->device);
+		goto err;
 	}
 
 	return cl;
Signature · 1 line
2.34.1
author maintainer
#98 lore raw

PATCH 98/186 mwifiex: Fix skb_over_panic in mwifiex_usb_recv()

In reply to Greg Kroah-Hartman

From: Zekun Shen <[email protected]>

[ Upstream commit 04d80663f67ccef893061b49ec8a42ff7045ae84 ]

Currently, with an unknown recv_type, mwifiex_usb_recv just return -1 without restoring the skb. Next time mwifiex_usb_rx_complete is invoked with the same skb, calling skb_put causes skb_over_panic.

The bug is triggerable with a compromised/malfunctioning usb device. After applying the patch, skb_over_panic no longer shows up with the same input.

Attached is the panic report from fuzzing.
skbuff: skb_over_panic: text:000000003bf1b5fa
len:2048 put:4 head:00000000dd6a115b data:000000000a9445d8 tail:0x844 end:0x840 dev:<NULL>
kernel BUG at net/core/skbuff.c:109!
invalid opcode: 0000 [#1] SMP KASAN NOPTI

CPU: 0 PID: 198 Comm: in:imklog Not tainted 5.6.0 #60
RIP: 0010:skb_panic+0x15f/0x161
Call Trace:
 <IRQ>
 ? mwifiex_usb_rx_complete+0x26b/0xfcd [mwifiex_usb]
 skb_put.cold+0x24/0x24
 mwifiex_usb_rx_complete+0x26b/0xfcd [mwifiex_usb]
 __usb_hcd_giveback_urb+0x1e4/0x380
 usb_giveback_urb_bh+0x241/0x4f0
 ? __hrtimer_run_queues+0x316/0x740
 ? __usb_hcd_giveback_urb+0x380/0x380
 tasklet_action_common.isra.0+0x135/0x330
 __do_softirq+0x18c/0x634
 irq_exit+0x114/0x140
 smp_apic_timer_interrupt+0xde/0x380
 apic_timer_interrupt+0xf/0x20
 </IRQ>
---
 drivers/net/wireless/marvell/mwifiex/usb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/net/wireless/marvell/mwifiex/usb.c +2 -1
index 202ce83cb7948..f279cd4e78ff9 100644
@@ -130,7 +130,8 @@ static int mwifiex_usb_recv(struct mwifiex_adapter *adapter,
 		default:
 			mwifiex_dbg(adapter, ERROR,
 				    "unknown recv_type %#x\n", recv_type);
-			return -1;
+			ret = -1;
+			goto exit_restore_skb;
 		}
 		break;
 	case MWIFIEX_USB_EP_DATA:
Signature · 1 line
2.34.1
author maintainer
#99 lore raw

PATCH 99/186 usb: uhci: add aspeed ast2600 uhci support

In reply to Greg Kroah-Hartman

From: Neal Liu <[email protected]>

[ Upstream commit 554abfe2eadec97d12c71d4a69da1518478f69eb ]

Enable ast2600 uhci quirks.

---
 drivers/usb/host/uhci-platform.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/usb/host/uhci-platform.c +2 -1
index 6cb16d4b22578..4e91f7b21a796 100644
@@ -113,7 +113,8 @@ static int uhci_hcd_platform_probe(struct platform_device *pdev)
 				num_ports);
 		}
 		if (of_device_is_compatible(np, "aspeed,ast2400-uhci") ||
-		    of_device_is_compatible(np, "aspeed,ast2500-uhci")) {
+		    of_device_is_compatible(np, "aspeed,ast2500-uhci") ||
+		    of_device_is_compatible(np, "aspeed,ast2600-uhci")) {
 			uhci->is_aspeed = 1;
 			dev_info(&pdev->dev,
 				 "Enabled Aspeed implementation workarounds\n");
Signature · 1 line
2.34.1
author maintainer
#100 lore raw

PATCH 100/186 floppy: Add max size check for user space request

In reply to Greg Kroah-Hartman

From: Xiongwei Song <[email protected]>

[ Upstream commit 545a32498c536ee152331cd2e7d2416aa0f20e01 ]

We need to check the max request size that is from user space before allocating pages. If the request size exceeds the limit, return -EINVAL. This check can avoid the warning below from page allocator.

WARNING: CPU: 3 PID: 16525 at mm/page_alloc.c:5344 current_gfp_context include/linux/sched/mm.h:195 [inline]
WARNING: CPU: 3 PID: 16525 at mm/page_alloc.c:5344 __alloc_pages+0x45d/0x500 mm/page_alloc.c:5356
Modules linked in:
CPU: 3 PID: 16525 Comm: syz-executor.3 Not tainted 5.15.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:__alloc_pages+0x45d/0x500 mm/page_alloc.c:5344
Code: be c9 00 00 00 48 c7 c7 20 4a 97 89 c6 05 62 32 a7 0b 01 e8 74 9a 42 07 e9 6a ff ff ff 0f 0b e9 a0 fd ff ff 40 80 e5 3f eb 88 <0f> 0b e9 18 ff ff ff 4c 89 ef 44 89 e6 45 31 ed e8 1e 76 ff ff e9
RSP: 0018:ffffc90023b87850 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff92004770f0b RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000033 RDI: 0000000000010cc1
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81bb4686 R11: 0000000000000001 R12: ffffffff902c1960
R13: 0000000000000033 R14: 0000000000000000 R15: ffff88804cf64a30
FS:  0000000000000000(0000) GS:ffff88802cd00000(0063) knlGS:00000000f44b4b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002c921000 CR3: 000000004f507000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191
 __get_free_pages+0x8/0x40 mm/page_alloc.c:5418
 raw_cmd_copyin drivers/block/floppy.c:3113 [inline]
 raw_cmd_ioctl drivers/block/floppy.c:3160 [inline]
 fd_locked_ioctl+0x12e5/0x2820 drivers/block/floppy.c:3528
 fd_ioctl drivers/block/floppy.c:3555 [inline]
 fd_compat_ioctl+0x891/0x1b60 drivers/block/floppy.c:3869
 compat_blkdev_ioctl+0x3b8/0x810 block/ioctl.c:662
 __do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:972
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
---
 drivers/block/floppy.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
drivers/block/floppy.c +3 -1
index b6c99cf1ce745..057bedeaacab5 100644
@@ -3118,6 +3118,8 @@ static void raw_cmd_free(struct floppy_raw_cmd **ptr)
 	}
 }
 
+#define MAX_LEN (1UL << MAX_ORDER << PAGE_SHIFT)
+
 static int raw_cmd_copyin(int cmd, void __user *param,
 				 struct floppy_raw_cmd **rcmd)
 {
@@ -3155,7 +3157,7 @@ loop:
 	ptr->resultcode = 0;
 
 	if (ptr->flags & (FD_RAW_READ | FD_RAW_WRITE)) {
-		if (ptr->length <= 0)
+		if (ptr->length <= 0 || ptr->length >= MAX_LEN)
 			return -EINVAL;
 		ptr->kernel_data = (char *)fd_dma_mem_alloc(ptr->length);
 		fallback_on_nodma_alloc(&ptr->kernel_data, ptr->length);
Signature · 1 line
2.34.1
author maintainer
#101 lore raw

PATCH 101/186 media: uvcvideo: Increase UVC_CTRL_CONTROL_TIMEOUT to 5 seconds.

In reply to Greg Kroah-Hartman

From: James Hilliard <[email protected]>

[ Upstream commit c8ed7d2f614cd8b315981d116c7a2fb01829500d ]

Some uvc devices appear to require the maximum allowed USB timeout for GET_CUR/SET_CUR requests.

So lets just bump the UVC control timeout to 5 seconds which is the same as the usb ctrl get/set defaults:
USB_CTRL_GET_TIMEOUT 5000
USB_CTRL_SET_TIMEOUT 5000

It fixes the following runtime warnings:
Failed to query (GET_CUR) UVC control 11 on unit 2: -110 (exp. 1). Failed to query (SET_CUR) UVC control 3 on unit 2: -110 (exp. 2).

---
 drivers/media/usb/uvc/uvcvideo.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/media/usb/uvc/uvcvideo.h +1 -1
index 05398784d1c89..acb9f95127eb2 100644
@@ -167,7 +167,7 @@
 /* Maximum status buffer size in bytes of interrupt URB. */
 #define UVC_MAX_STATUS_SIZE	16
 
-#define UVC_CTRL_CONTROL_TIMEOUT	500
+#define UVC_CTRL_CONTROL_TIMEOUT	5000
 #define UVC_CTRL_STREAMING_TIMEOUT	5000
 
 /* Maximum allowed number of control mappings per device */
Signature · 1 line
2.34.1
author maintainer
#102 lore raw

PATCH 102/186 media: saa7146: hexium_orion: Fix a NULL pointer dereference in hexium_attach()

In reply to Greg Kroah-Hartman

From: Zhou Qingyang <[email protected]>

[ Upstream commit 348df8035301dd212e3cc2860efe4c86cb0d3303 ]

In hexium_attach(dev, info), saa7146_vv_init() is called to allocate a new memory for dev->vv_data. In hexium_detach(), saa7146_vv_release() will be called and there is a dereference of dev->vv_data in saa7146_vv_release(), which could lead to a NULL pointer dereference on failure of saa7146_vv_init() according to the following logic.

Both hexium_attach() and hexium_detach() are callback functions of the variable 'extension', so there exists a possible call chain directly from hexium_attach() to hexium_detach():

hexium_attach(dev, info) -- fail to alloc memory to dev->vv_data

	|		    		in saa7146_vv_init().
	|
	|

hexium_detach() -- a dereference of dev->vv_data in saa7146_vv_release()

Fix this bug by adding a check of saa7146_vv_init().

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_VIDEO_HEXIUM_ORION=m show no new warnings, and our static analyzer no longer warns about this code.

---
 drivers/media/pci/saa7146/hexium_orion.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
drivers/media/pci/saa7146/hexium_orion.c +7 -1
index cb71653a66694..908de2f768441 100644
@@ -366,10 +366,16 @@ static struct saa7146_ext_vv vv_data;
 static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
 {
 	struct hexium *hexium = (struct hexium *) dev->ext_priv;
+	int ret;
 
 	DEB_EE("\n");
 
-	saa7146_vv_init(dev, &vv_data);
+	ret = saa7146_vv_init(dev, &vv_data);
+	if (ret) {
+		pr_err("Error in saa7146_vv_init()\n");
+		return ret;
+	}
+
 	vv_data.vid_ops.vidioc_enum_input = vidioc_enum_input;
 	vv_data.vid_ops.vidioc_g_input = vidioc_g_input;
 	vv_data.vid_ops.vidioc_s_input = vidioc_s_input;
Signature · 1 line
2.34.1
author maintainer
#103 lore raw

PATCH 103/186 media: m920x: dont use stack on USB reads

In reply to Greg Kroah-Hartman

From: Mauro Carvalho Chehab <[email protected]>

[ Upstream commit a2ab06d7c4d6bfd0b545a768247a70463e977e27 ]

Using stack-allocated pointers for USB message data don't work. This driver is almost OK with that, except for the I2C read logic.

Fix it by using a temporary read buffer, just like on all other calls to m920x_read().

---
 drivers/media/usb/dvb-usb/m920x.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
drivers/media/usb/dvb-usb/m920x.c +11 -1
index 32081c2ce0da8..8a43e2415686a 100644
@@ -280,6 +280,13 @@ static int m920x_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int nu
 			/* Should check for ack here, if we knew how. */
 		}
 		if (msg[i].flags & I2C_M_RD) {
+			char *read = kmalloc(1, GFP_KERNEL);
+			if (!read) {
+				ret = -ENOMEM;
+				kfree(read);
+				goto unlock;
+			}
+
 			for (j = 0; j < msg[i].len; j++) {
 				/* Last byte of transaction?
 				 * Send STOP, otherwise send ACK. */
@@ -287,9 +294,12 @@ static int m920x_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int nu
 
 				if ((ret = m920x_read(d->udev, M9206_I2C, 0x0,
 						      0x20 | stop,
-						      &msg[i].buf[j], 1)) != 0)
+						      read, 1)) != 0)
 					goto unlock;
+				msg[i].buf[j] = read[0];
 			}
+
+			kfree(read);
 		} else {
 			for (j = 0; j < msg[i].len; j++) {
 				/* Last byte of transaction? Then send STOP. */
Signature · 1 line
2.34.1
author maintainer
#104 lore raw

PATCH 104/186 iwlwifi: mvm: synchronize with FW after multicast commands

In reply to Greg Kroah-Hartman

From: Johannes Berg <[email protected]>

[ Upstream commit db66abeea3aefed481391ecc564fb7b7fb31d742 ]

If userspace installs a lot of multicast groups very quickly, then we may run out of command queue space as we send the updates in an asynchronous fashion (due to locking concerns), and the CPU can create them faster than the firmware can process them. This is true even when mac80211 has a work struct that gets scheduled.

Fix this by synchronizing with the firmware after sending all those commands - outside of the iteration we can send a synchronous echo command that just has the effect of the CPU waiting for the prior asynchronous commands to finish. This also will cause fewer of the commands to be sent to the firmware overall, because the work will only run once when rescheduled multiple times while it's running.

---
 .../net/wireless/intel/iwlwifi/mvm/mac80211.c   | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +17 -0
index d82d8cfe2e41c..f896758a3fa31 100644
@@ -1608,6 +1608,7 @@ static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
 	struct iwl_mvm_mc_iter_data iter_data = {
 		.mvm = mvm,
 	};
+	int ret;
 
 	lockdep_assert_held(&mvm->mutex);
 
@@ -1617,6 +1618,22 @@ static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
 	ieee80211_iterate_active_interfaces_atomic(
 		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 		iwl_mvm_mc_iface_iterator, &iter_data);
+
+	/*
+	 * Send a (synchronous) ech command so that we wait for the
+	 * multiple asynchronous MCAST_FILTER_CMD commands sent by
+	 * the interface iterator. Otherwise, we might get here over
+	 * and over again (by userspace just sending a lot of these)
+	 * and the CPU can send them faster than the firmware can
+	 * process them.
+	 * Note that the CPU is still faster - but with this we'll
+	 * actually send fewer commands overall because the CPU will
+	 * not schedule the work in mac80211 as frequently if it's
+	 * still running when rescheduled (possibly multiple times).
+	 */
+	ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);
+	if (ret)
+		IWL_ERR(mvm, "Failed to synchronize multicast groups update\n");
 }
 
 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
Signature · 1 line
2.34.1
author maintainer
#105 lore raw

PATCH 105/186 ath10k: Fix tx hanging

In reply to Greg Kroah-Hartman

From: Sebastian Gottschall <[email protected]>

[ Upstream commit e8a91863eba3966a447d2daa1526082d52b5db2a ]

While running stress tests in roaming scenarios (switching ap's every 5 seconds, we discovered a issue which leads to tx hangings of exactly 5 seconds while or after scanning for new accesspoints. We found out that this hanging is triggered by ath10k_mac_wait_tx_complete since the empty_tx_wq was not wake when the num_tx_pending counter reaches zero. To fix this, we simply move the wake_up call to htt_tx_dec_pending, since this call was missed on several locations within the ath10k code.

---
 drivers/net/wireless/ath/ath10k/htt_tx.c | 3 +++
 drivers/net/wireless/ath/ath10k/txrx.c   | 2 --
 2 files changed, 3 insertions(+), 2 deletions(-)
drivers/net/wireless/ath/ath10k/htt_tx.c +3 -0
index 685faac1368fd..21f5fb68b2046 100644
@@ -158,6 +158,9 @@ void ath10k_htt_tx_dec_pending(struct ath10k_htt *htt)
 	htt->num_pending_tx--;
 	if (htt->num_pending_tx == htt->max_num_pending_tx - 1)
 		ath10k_mac_tx_unlock(htt->ar, ATH10K_TX_PAUSE_Q_FULL);
+
+	if (htt->num_pending_tx == 0)
+		wake_up(&htt->empty_tx_wq);
 }
 
 int ath10k_htt_tx_inc_pending(struct ath10k_htt *htt)
drivers/net/wireless/ath/ath10k/txrx.c +0 -2
index 9999c8c40269d..e6705a30f3799 100644
@@ -90,8 +90,6 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt,
 
 	ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id);
 	ath10k_htt_tx_dec_pending(htt);
-	if (htt->num_pending_tx == 0)
-		wake_up(&htt->empty_tx_wq);
 	spin_unlock_bh(&htt->tx_lock);
 
 	dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
Signature · 1 line
2.34.1
author maintainer
#106 lore raw

PATCH 106/186 net: bonding: debug: avoid printing debug logs when bond is not notifying peers

In reply to Greg Kroah-Hartman

From: Suresh Kumar <[email protected]>

[ Upstream commit fee32de284ac277ba434a2d59f8ce46528ff3946 ]

Currently "bond_should_notify_peers: slave ..." messages are printed whenever "bond_should_notify_peers" function is called.

+++

Dec 12 12:33:26 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
Dec 12 12:33:26 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
Dec 12 12:33:26 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
Dec 12 12:33:26 node1 kernel: bond0: (slave enp0s25): Received LACPDU on port 1
Dec 12 12:33:26 node1 kernel: bond0: (slave enp0s25): Rx Machine: Port=1, Last State=6, Curr State=6
Dec 12 12:33:26 node1 kernel: bond0: (slave enp0s25): partner sync=1
Dec 12 12:33:26 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
Dec 12 12:33:26 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
Dec 12 12:33:26 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
...
Dec 12 12:33:30 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
Dec 12 12:33:30 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
Dec 12 12:33:30 node1 kernel: bond0: (slave enp4s3): Received LACPDU on port 2
Dec 12 12:33:30 node1 kernel: bond0: (slave enp4s3): Rx Machine: Port=2, Last State=6, Curr State=6
Dec 12 12:33:30 node1 kernel: bond0: (slave enp4s3): partner sync=1
Dec 12 12:33:30 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
Dec 12 12:33:30 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25
Dec 12 12:33:30 node1 kernel: bond0: bond_should_notify_peers: slave enp0s25

+++

This is confusing and can also clutter up debug logs. Print logs only when the peer notification happens.

---
 drivers/net/bonding/bond_main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
drivers/net/bonding/bond_main.c +3 -3
index 340e7bf6463ec..7096fcbf699c0 100644
@@ -782,14 +782,14 @@ static bool bond_should_notify_peers(struct bonding *bond)
 	slave = rcu_dereference(bond->curr_active_slave);
 	rcu_read_unlock();
 
-	netdev_dbg(bond->dev, "bond_should_notify_peers: slave %s\n",
-		   slave ? slave->dev->name : "NULL");
-
 	if (!slave || !bond->send_peer_notif ||
 	    !netif_carrier_ok(bond->dev) ||
 	    test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state))
 		return false;
 
+	netdev_dbg(bond->dev, "bond_should_notify_peers: slave %s\n",
+		   slave ? slave->dev->name : "NULL");
+
 	return true;
 }
 
Signature · 1 line
2.34.1
author maintainer
#107 lore raw

PATCH 107/186 bpf: Do not WARN in bpf_warn_invalid_xdp_action()

In reply to Greg Kroah-Hartman

From: Paolo Abeni <[email protected]>

[ Upstream commit 2cbad989033bff0256675c38f96f5faab852af4b ]

The WARN_ONCE() in bpf_warn_invalid_xdp_action() can be triggered by any bugged program, and even attaching a correct program to a NIC not supporting the given action.

The resulting splat, beyond polluting the logs, fouls automated tools:
e.g. a syzkaller reproducers using an XDP program returning an unsupported action will never pass validation.

Replace the WARN_ONCE with a less intrusive pr_warn_once().

---
 net/core/filter.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
net/core/filter.c +3 -3
index 40b378bed6033..729e302bba6e9 100644
@@ -3644,9 +3644,9 @@ void bpf_warn_invalid_xdp_action(u32 act)
 {
 	const u32 act_max = XDP_REDIRECT;
 
-	WARN_ONCE(1, "%s XDP return value %u, expect packet loss!\n",
-		  act > act_max ? "Illegal" : "Driver unsupported",
-		  act);
+	pr_warn_once("%s XDP return value %u, expect packet loss!\n",
+		     act > act_max ? "Illegal" : "Driver unsupported",
+		     act);
 }
 EXPORT_SYMBOL_GPL(bpf_warn_invalid_xdp_action);
 
Signature · 1 line
2.34.1
author maintainer
#108 lore raw

PATCH 108/186 media: igorplugusb: receiver overflow should be reported

In reply to Greg Kroah-Hartman

From: Sean Young <[email protected]>

[ Upstream commit 8fede658e7ddb605bbd68ed38067ddb0af033db4 ]

Without this, some IR will be missing mid-stream and we might decode something which never really occurred.

---
 drivers/media/rc/igorplugusb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
drivers/media/rc/igorplugusb.c +3 -1
index a5ea86be8f449..2a0325d1f9def 100644
@@ -73,9 +73,11 @@ static void igorplugusb_irdata(struct igorplugusb *ir, unsigned len)
 	if (start >= len) {
 		dev_err(ir->dev, "receive overflow invalid: %u", overflow);
 	} else {
-		if (overflow > 0)
+		if (overflow > 0) {
 			dev_warn(ir->dev, "receive overflow, at least %u lost",
 								overflow);
+			ir_raw_event_reset(ir->rc);
+		}
 
 		do {
 			rawir.duration = ir->buf_in[i] * 85333;
Signature · 1 line
2.34.1
author maintainer
#109 lore raw

PATCH 109/186 media: saa7146: hexium_gemini: Fix a NULL pointer dereference in hexium_attach()

In reply to Greg Kroah-Hartman

From: Zhou Qingyang <[email protected]>

[ Upstream commit 3af86b046933ba513d08399dba0d4d8b50d607d0 ]

In hexium_attach(dev, info), saa7146_vv_init() is called to allocate a new memory for dev->vv_data. saa7146_vv_release() will be called on failure of saa7146_register_device(). There is a dereference of dev->vv_data in saa7146_vv_release(), which could lead to a NULL pointer dereference on failure of saa7146_vv_init().

Fix this bug by adding a check of saa7146_vv_init().

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_VIDEO_HEXIUM_GEMINI=m show no new warnings, and our static analyzer no longer warns about this code.

---
 drivers/media/common/saa7146/saa7146_fops.c | 2 +-
 drivers/media/pci/saa7146/hexium_gemini.c   | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)
drivers/media/common/saa7146/saa7146_fops.c +1 -1
index 930d2c94d5d30..2c9365a39270a 100644
@@ -524,7 +524,7 @@ int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
 		ERR("out of memory. aborting.\n");
 		kfree(vv);
 		v4l2_ctrl_handler_free(hdl);
-		return -1;
+		return -ENOMEM;
 	}
 
 	saa7146_video_uops.init(dev,vv);
drivers/media/pci/saa7146/hexium_gemini.c +6 -1
index a527d86b93a77..7f498aebb4112 100644
@@ -296,7 +296,12 @@ static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_d
 	hexium_set_input(hexium, 0);
 	hexium->cur_input = 0;
 
-	saa7146_vv_init(dev, &vv_data);
+	ret = saa7146_vv_init(dev, &vv_data);
+	if (ret) {
+		i2c_del_adapter(&hexium->i2c_adapter);
+		kfree(hexium);
+		return ret;
+	}
 
 	vv_data.vid_ops.vidioc_enum_input = vidioc_enum_input;
 	vv_data.vid_ops.vidioc_g_input = vidioc_g_input;
Signature · 1 line
2.34.1
author maintainer
#110 lore raw

PATCH 110/186 mmc: core: Fixup storing of OCR for MMC_QUIRK_NONSTD_SDIO

In reply to Greg Kroah-Hartman

From: Ulf Hansson <[email protected]>

[ Upstream commit 8c3e5b74b9e2146f564905e50ca716591c76d4f1 ]

The mmc core takes a specific path to support initializing of a non-standard SDIO card. This is triggered by looking for the card-quirk, MMC_QUIRK_NONSTD_SDIO.

In mmc_sdio_init_card() this gets rather messy, as it causes the code to bail out earlier, compared to the usual path. This leads to that the OCR doesn't get saved properly in card->ocr. Fortunately, only omap_hsmmc has been using the MMC_QUIRK_NONSTD_SDIO and is dealing with the issue, by assigning a hardcoded value (0x80) to card->ocr from an ->init_card() ops.

To make the behaviour consistent, let's instead rely on the core to save the OCR in card->ocr during initialization.

---
 drivers/mmc/core/sdio.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
drivers/mmc/core/sdio.c +3 -1
index 7568cea559220..bf0a0ef60d6b4 100644
@@ -631,6 +631,8 @@ try_again:
 	if (host->ops->init_card)
 		host->ops->init_card(host, card);
 
+	card->ocr = ocr_card;
+
 	/*
 	 * If the host and card support UHS-I mode request the card
 	 * to switch to 1.8V signaling level.  No 1.8v signalling if
@@ -737,7 +739,7 @@ try_again:
 
 		card = oldcard;
 	}
-	card->ocr = ocr_card;
+
 	mmc_fixup_device(card, sdio_fixup_methods);
 
 	if (card->type == MMC_TYPE_SD_COMBO) {
Signature · 1 line
2.34.1
author maintainer
#111 lore raw

PATCH 111/186 arm64: tegra: Adjust length of CCPLEX cluster MMIO region

In reply to Greg Kroah-Hartman

From: Thierry Reding <[email protected]>

[ Upstream commit 2b14cbd643feea5fc17c6e8bead4e71088c69acd ]

The Tegra186 CCPLEX cluster register region is 4 MiB is length, not 4 MiB - 1. This was likely presumed to be the "limit" rather than length. Fix it up.

---
 arch/arm64/boot/dts/nvidia/tegra186.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
arch/arm64/boot/dts/nvidia/tegra186.dtsi +1 -1
index a9c3eef6c4e09..3307d816050fe 100644
@@ -351,7 +351,7 @@
 
 	ccplex@e000000 {
 		compatible = "nvidia,tegra186-ccplex-cluster";
-		reg = <0x0 0x0e000000 0x0 0x3fffff>;
+		reg = <0x0 0x0e000000 0x0 0x400000>;
 
 		nvidia,bpmp = <&bpmp>;
 	};
Signature · 1 line
2.34.1
author maintainer
#112 lore raw

PATCH 112/186 usb: hub: Add delay for SuperSpeed hub resume to let links transit to U0

In reply to Greg Kroah-Hartman

From: Kai-Heng Feng <[email protected]>

[ Upstream commit 00558586382891540c59c9febc671062425a6e47 ]

When a new USB device gets plugged to nested hubs, the affected hub, which connects to usb 2-1.4-port2, doesn't report there's any change, hence the nested hubs go back to runtime suspend like nothing happened:

[  281.032951] usb usb2: usb wakeup-resume
[  281.032959] usb usb2: usb auto-resume
[  281.032974] hub 2-0:1.0: hub_resume
[  281.033011] usb usb2-port1: status 0263 change 0000
[  281.033077] hub 2-0:1.0: state 7 ports 4 chg 0000 evt 0000
[  281.049797] usb 2-1: usb wakeup-resume
[  281.069800] usb 2-1: Waited 0ms for CONNECT
[  281.069810] usb 2-1: finish resume
[  281.070026] hub 2-1:1.0: hub_resume
[  281.070250] usb 2-1-port4: status 0203 change 0000
[  281.070272] usb usb2-port1: resume, status 0
[  281.070282] hub 2-1:1.0: state 7 ports 4 chg 0010 evt 0000
[  281.089813] usb 2-1.4: usb wakeup-resume
[  281.109792] usb 2-1.4: Waited 0ms for CONNECT
[  281.109801] usb 2-1.4: finish resume
[  281.109991] hub 2-1.4:1.0: hub_resume
[  281.110147] usb 2-1.4-port2: status 0263 change 0000
[  281.110234] usb 2-1-port4: resume, status 0
[  281.110239] usb 2-1-port4: status 0203, change 0000, 10.0 Gb/s
[  281.110266] hub 2-1.4:1.0: state 7 ports 4 chg 0000 evt 0000
[  281.110426] hub 2-1.4:1.0: hub_suspend
[  281.110565] usb 2-1.4: usb auto-suspend, wakeup 1
[  281.130998] hub 2-1:1.0: hub_suspend
[  281.137788] usb 2-1: usb auto-suspend, wakeup 1
[  281.142935] hub 2-0:1.0: state 7 ports 4 chg 0000 evt 0000
[  281.177828] usb 2-1: usb wakeup-resume
[  281.197839] usb 2-1: Waited 0ms for CONNECT
[  281.197850] usb 2-1: finish resume
[  281.197984] hub 2-1:1.0: hub_resume
[  281.198203] usb 2-1-port4: status 0203 change 0000
[  281.198228] usb usb2-port1: resume, status 0
[  281.198237] hub 2-1:1.0: state 7 ports 4 chg 0010 evt 0000
[  281.217835] usb 2-1.4: usb wakeup-resume
[  281.237834] usb 2-1.4: Waited 0ms for CONNECT
[  281.237845] usb 2-1.4: finish resume
[  281.237990] hub 2-1.4:1.0: hub_resume
[  281.238067] usb 2-1.4-port2: status 0263 change 0000
[  281.238148] usb 2-1-port4: resume, status 0
[  281.238152] usb 2-1-port4: status 0203, change 0000, 10.0 Gb/s
[  281.238166] hub 2-1.4:1.0: state 7 ports 4 chg 0000 evt 0000
[  281.238385] hub 2-1.4:1.0: hub_suspend
[  281.238523] usb 2-1.4: usb auto-suspend, wakeup 1
[  281.258076] hub 2-1:1.0: hub_suspend
[  281.265744] usb 2-1: usb auto-suspend, wakeup 1
[  281.285976] hub 2-0:1.0: hub_suspend
[  281.285988] usb usb2: bus auto-suspend, wakeup 1

USB 3.2 spec, 9.2.5.4 "Changing Function Suspend State" says that "If the link is in a non-U0 state, then the device must transition the link to U0 prior to sending the remote wake message", but the hub only transits the link to U0 after signaling remote wakeup.

So be more forgiving and use a 20ms delay to let the link transit to U0 for remote wakeup.

---
 drivers/usb/core/hub.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
drivers/usb/core/hub.c +4 -1
index a9a57c88139df..132828b56cf83 100644
@@ -1077,7 +1077,10 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
 		} else {
 			hub_power_on(hub, true);
 		}
-	}
+	/* Give some time on remote wakeup to let links to transit to U0 */
+	} else if (hub_is_superspeed(hub->hdev))
+		msleep(20);
+
  init2:
 
 	/*
Signature · 1 line
2.34.1
author maintainer
#113 lore raw

PATCH 113/186 ath9k: Fix out-of-bound memcpy in ath9k_hif_usb_rx_stream

In reply to Greg Kroah-Hartman

From: Zekun Shen <[email protected]>

[ Upstream commit 6ce708f54cc8d73beca213cec66ede5ce100a781 ]

Large pkt_len can lead to out-out-bound memcpy. Current ath9k_hif_usb_rx_stream allows combining the content of two urb inputs to one pkt. The first input can indicate the size of the pkt. Any remaining size is saved in hif_dev->rx_remain_len. While processing the next input, memcpy is used with rx_remain_len.

4-byte pkt_len can go up to 0xffff, while a single input is 0x4000 maximum in size (MAX_RX_BUF_SIZE). Thus, the patch adds a check for pkt_len which must not exceed 2 * MAX_RX_BUG_SIZE.

BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0x490/0xed7 [ath9k_htc]
Read of size 46393 at addr ffff888018798000 by task kworker/0:1/23

CPU: 0 PID: 23 Comm: kworker/0:1 Not tainted 5.6.0 #63
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS rel-1.10.2-0-g5f4c7b1-prebuilt.qemu-project.org 04/01/2014
Workqueue: events request_firmware_work_func
Call Trace:
 <IRQ>
 dump_stack+0x76/0xa0
 print_address_description.constprop.0+0x16/0x200
 ? ath9k_hif_usb_rx_cb+0x490/0xed7 [ath9k_htc]
 ? ath9k_hif_usb_rx_cb+0x490/0xed7 [ath9k_htc]
 __kasan_report.cold+0x37/0x7c
 ? ath9k_hif_usb_rx_cb+0x490/0xed7 [ath9k_htc]
 kasan_report+0xe/0x20
 check_memory_region+0x15a/0x1d0
 memcpy+0x20/0x50
 ath9k_hif_usb_rx_cb+0x490/0xed7 [ath9k_htc]
 ? hif_usb_mgmt_cb+0x2d9/0x2d9 [ath9k_htc]
 ? _raw_spin_lock_irqsave+0x7b/0xd0
 ? _raw_spin_trylock_bh+0x120/0x120
 ? __usb_unanchor_urb+0x12f/0x210
 __usb_hcd_giveback_urb+0x1e4/0x380
 usb_giveback_urb_bh+0x241/0x4f0
 ? __hrtimer_run_queues+0x316/0x740
 ? __usb_hcd_giveback_urb+0x380/0x380
 tasklet_action_common.isra.0+0x135/0x330
 __do_softirq+0x18c/0x634
 irq_exit+0x114/0x140
 smp_apic_timer_interrupt+0xde/0x380
 apic_timer_interrupt+0xf/0x20

I found the bug using a custome USBFuzz port. It's a research work to fuzz USB stack/drivers. I modified it to fuzz ath9k driver only, providing hand-crafted usb descriptors to QEMU.

After fixing the value of pkt_tag to ATH_USB_RX_STREAM_MODE_TAG in QEMU emulation, I found the KASAN report. The bug is triggerable whenever pkt_len is above two MAX_RX_BUG_SIZE. I used the same input that crashes to test the driver works when applying the patch.

---
 drivers/net/wireless/ath/ath9k/hif_usb.c | 7 +++++++
 1 file changed, 7 insertions(+)
drivers/net/wireless/ath/ath9k/hif_usb.c +7 -0
index ce3a785212740..8125f17526519 100644
@@ -588,6 +588,13 @@ static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
 			return;
 		}
 
+		if (pkt_len > 2 * MAX_RX_BUF_SIZE) {
+			dev_err(&hif_dev->udev->dev,
+				"ath9k_htc: invalid pkt_len (%x)\n", pkt_len);
+			RX_STAT_INC(skb_dropped);
+			return;
+		}
+
 		pad_len = 4 - (pkt_len & 0x3);
 		if (pad_len == 4)
 			pad_len = 0;
Signature · 1 line
2.34.1
author maintainer
#114 lore raw

PATCH 114/186 iwlwifi: fix leaks/bad data after failed firmware load

In reply to Greg Kroah-Hartman

From: Johannes Berg <[email protected]>

[ Upstream commit ab07506b0454bea606095951e19e72c282bfbb42 ]

If firmware load fails after having loaded some parts of the firmware, e.g. the IML image, then this would leak. For the host command list we'd end up running into a WARN on the next attempt to load another firmware image.

Fix this by calling iwl_dealloc_ucode() on failures, and make that also clear the data so we start fresh on the next round.

---
 drivers/net/wireless/intel/iwlwifi/iwl-drv.c | 8 ++++++++
 1 file changed, 8 insertions(+)
drivers/net/wireless/intel/iwlwifi/iwl-drv.c +8 -0
index 6c10b8c4ddbe5..95101f66a886e 100644
@@ -182,6 +182,9 @@ static void iwl_dealloc_ucode(struct iwl_drv *drv)
 
 	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 		iwl_free_fw_img(drv, drv->fw.img + i);
+
+	/* clear the data for the aborted load case */
+	memset(&drv->fw, 0, sizeof(drv->fw));
 }
 
 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
@@ -1271,6 +1274,7 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 	int i;
 	bool load_module = false;
 	bool usniffer_images = false;
+	bool failure = true;
 
 	fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
 	fw->ucode_capa.standard_phy_calibration_size =
@@ -1499,6 +1503,7 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 				op->name, err);
 #endif
 	}
+	failure = false;
 	goto free;
 
  try_again:
@@ -1514,6 +1519,9 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 	complete(&drv->request_firmware_complete);
 	device_release_driver(drv->trans->dev);
  free:
+	if (failure)
+		iwl_dealloc_ucode(drv);
+
 	if (pieces) {
 		for (i = 0; i < ARRAY_SIZE(pieces->img); i++)
 			kfree(pieces->img[i].sec);
Signature · 1 line
2.34.1
author maintainer
#115 lore raw

PATCH 115/186 iwlwifi: remove module loading failure message

In reply to Greg Kroah-Hartman

From: Johannes Berg <[email protected]>

[ Upstream commit 6518f83ffa51131daaf439b66094f684da3fb0ae ]

When CONFIG_DEBUG_TEST_DRIVER_REMOVE is set, iwlwifi crashes when the opmode module cannot be loaded, due to completing the completion before using drv->dev, which can then already be freed.

Fix this by removing the (fairly useless) message. Moving the completion later causes a deadlock instead, so that's not an option.

---
 drivers/net/wireless/intel/iwlwifi/iwl-drv.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)
drivers/net/wireless/intel/iwlwifi/iwl-drv.c +1 -8
index 95101f66a886e..ade3c27050471 100644
@@ -1494,15 +1494,8 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 	 * else from proceeding if the module fails to load
 	 * or hangs loading.
 	 */
-	if (load_module) {
+	if (load_module)
 		request_module("%s", op->name);
-#ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
-		if (err)
-			IWL_ERR(drv,
-				"failed to load module %s (error %d), is dynamic loading enabled?\n",
-				op->name, err);
-#endif
-	}
 	failure = false;
 	goto free;
 
Signature · 1 line
2.34.1
author maintainer
#116 lore raw

PATCH 116/186 um: registers: Rename function names to avoid conflicts and build problems

In reply to Greg Kroah-Hartman

From: Randy Dunlap <[email protected]>

[ Upstream commit 077b7320942b64b0da182aefd83c374462a65535 ]

The function names init_registers() and restore_registers() are used in several net/ethernet/ and gpu/drm/ drivers for other purposes (not calls to UML functions), so rename them.

This fixes multiple build errors.

---
 arch/um/include/shared/registers.h | 4 ++--
 arch/um/os-Linux/registers.c       | 4 ++--
 arch/um/os-Linux/start_up.c        | 2 +-
 arch/x86/um/syscalls_64.c          | 3 ++-
 4 files changed, 7 insertions(+), 6 deletions(-)
arch/um/include/shared/registers.h +2 -2
index a74449b5b0e31..12ad7c435e97f 100644
@@ -16,8 +16,8 @@ extern int restore_fp_registers(int pid, unsigned long *fp_regs);
 extern int save_fpx_registers(int pid, unsigned long *fp_regs);
 extern int restore_fpx_registers(int pid, unsigned long *fp_regs);
 extern int save_registers(int pid, struct uml_pt_regs *regs);
-extern int restore_registers(int pid, struct uml_pt_regs *regs);
-extern int init_registers(int pid);
+extern int restore_pid_registers(int pid, struct uml_pt_regs *regs);
+extern int init_pid_registers(int pid);
 extern void get_safe_registers(unsigned long *regs, unsigned long *fp_regs);
 extern unsigned long get_thread_reg(int reg, jmp_buf *buf);
 extern int get_fp_registers(int pid, unsigned long *regs);
arch/um/os-Linux/registers.c +2 -2
index 2ff8d4fe83c4f..34a5963bd7efd 100644
@@ -21,7 +21,7 @@ int save_registers(int pid, struct uml_pt_regs *regs)
 	return 0;
 }
 
-int restore_registers(int pid, struct uml_pt_regs *regs)
+int restore_pid_registers(int pid, struct uml_pt_regs *regs)
 {
 	int err;
 
@@ -36,7 +36,7 @@ int restore_registers(int pid, struct uml_pt_regs *regs)
 static unsigned long exec_regs[MAX_REG_NR];
 static unsigned long exec_fp_regs[FP_SIZE];
 
-int init_registers(int pid)
+int init_pid_registers(int pid)
 {
 	int err;
 
arch/um/os-Linux/start_up.c +1 -1
index 82bf5f8442ba4..2c75f2d638681 100644
@@ -336,7 +336,7 @@ void __init os_early_checks(void)
 	check_tmpexec();
 
 	pid = start_ptraced_child();
-	if (init_registers(pid))
+	if (init_pid_registers(pid))
 		fatal("Failed to initialize default registers");
 	stop_ptraced_child(pid, 1, 1);
 }
arch/x86/um/syscalls_64.c +2 -1
index 58f51667e2e4b..8249685b40960 100644
@@ -11,6 +11,7 @@
 #include <linux/uaccess.h>
 #include <asm/prctl.h> /* XXX This should get the constants from libc */
 #include <os.h>
+#include <registers.h>
 
 long arch_prctl(struct task_struct *task, int option,
 		unsigned long __user *arg2)
@@ -35,7 +36,7 @@ long arch_prctl(struct task_struct *task, int option,
 	switch (option) {
 	case ARCH_SET_FS:
 	case ARCH_SET_GS:
-		ret = restore_registers(pid, &current->thread.regs.regs);
+		ret = restore_pid_registers(pid, &current->thread.regs.regs);
 		if (ret)
 			return ret;
 		break;
Signature · 9 lines
2.34.1




_______________________________________________
linux-um mailing list
[email protected]
http://lists.infradead.org/mailman/listinfo/linux-um
author maintainer
#117 lore raw

PATCH 117/186 jffs2: GC deadlock reading a page that is used in jffs2_write_begin()

In reply to Greg Kroah-Hartman

From: Kyeong Yoo <[email protected]>

[ Upstream commit aa39cc675799bc92da153af9a13d6f969c348e82 ]

GC task can deadlock in read_cache_page() because it may attempt to release a page that is actually allocated by another task in jffs2_write_begin().
The reason is that in jffs2_write_begin() there is a small window a cache page is allocated for use but not set Uptodate yet.

This ends up with a deadlock between two tasks:
1) A task (e.g. file copy)
- jffs2_write_begin() locks a cache page
- jffs2_write_end() tries to lock "alloc_sem" from

	 jffs2_reserve_space() <-- STUCK

2) GC task (jffs2_gcd_mtd3)
- jffs2_garbage_collect_pass() locks "alloc_sem"
- try to lock the same cache page in read_cache_page() <-- STUCK

So to avoid this deadlock, hold "alloc_sem" in jffs2_write_begin() while reading data in a cache page.

---
 fs/jffs2/file.c | 40 +++++++++++++++++++++++++---------------
 1 file changed, 25 insertions(+), 15 deletions(-)
fs/jffs2/file.c +25 -15
index bd0428bebe9b7..221eb2bd205e4 100644
@@ -135,20 +135,15 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
 	struct page *pg;
 	struct inode *inode = mapping->host;
 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
+	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 	pgoff_t index = pos >> PAGE_SHIFT;
 	uint32_t pageofs = index << PAGE_SHIFT;
 	int ret = 0;
 
-	pg = grab_cache_page_write_begin(mapping, index, flags);
-	if (!pg)
-		return -ENOMEM;
-	*pagep = pg;
-
 	jffs2_dbg(1, "%s()\n", __func__);
 
 	if (pageofs > inode->i_size) {
 		/* Make new hole frag from old EOF to new page */
-		struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 		struct jffs2_raw_inode ri;
 		struct jffs2_full_dnode *fn;
 		uint32_t alloc_len;
@@ -159,7 +154,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
 		ret = jffs2_reserve_space(c, sizeof(ri), &alloc_len,
 					  ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
 		if (ret)
-			goto out_page;
+			goto out_err;
 
 		mutex_lock(&f->sem);
 		memset(&ri, 0, sizeof(ri));
@@ -189,7 +184,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
 			ret = PTR_ERR(fn);
 			jffs2_complete_reservation(c);
 			mutex_unlock(&f->sem);
-			goto out_page;
+			goto out_err;
 		}
 		ret = jffs2_add_full_dnode_to_inode(c, f, fn);
 		if (f->metadata) {
@@ -204,13 +199,26 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
 			jffs2_free_full_dnode(fn);
 			jffs2_complete_reservation(c);
 			mutex_unlock(&f->sem);
-			goto out_page;
+			goto out_err;
 		}
 		jffs2_complete_reservation(c);
 		inode->i_size = pageofs;
 		mutex_unlock(&f->sem);
 	}
 
+	/*
+	 * While getting a page and reading data in, lock c->alloc_sem until
+	 * the page is Uptodate. Otherwise GC task may attempt to read the same
+	 * page in read_cache_page(), which causes a deadlock.
+	 */
+	mutex_lock(&c->alloc_sem);
+	pg = grab_cache_page_write_begin(mapping, index, flags);
+	if (!pg) {
+		ret = -ENOMEM;
+		goto release_sem;
+	}
+	*pagep = pg;
+
 	/*
 	 * Read in the page if it wasn't already present. Cannot optimize away
 	 * the whole page write case until jffs2_write_end can handle the
@@ -220,15 +228,17 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
 		mutex_lock(&f->sem);
 		ret = jffs2_do_readpage_nolock(inode, pg);
 		mutex_unlock(&f->sem);
-		if (ret)
-			goto out_page;
+		if (ret) {
+			unlock_page(pg);
+			put_page(pg);
+			goto release_sem;
+		}
 	}
 	jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags);
-	return ret;
 
-out_page:
-	unlock_page(pg);
-	put_page(pg);
+release_sem:
+	mutex_unlock(&c->alloc_sem);
+out_err:
 	return ret;
 }
 
Signature · 1 line
2.34.1
author maintainer
#118 lore raw

PATCH 118/186 ACPICA: actypes.h: Expand the ACPI_ACCESS_ definitions

In reply to Greg Kroah-Hartman

From: Mark Langsdorf <[email protected]>

[ Upstream commit f81bdeaf816142e0729eea0cc84c395ec9673151 ]

ACPICA commit bc02c76d518135531483dfc276ed28b7ee632ce1

The current ACPI_ACCESS_*_WIDTH defines do not provide a way to test that size is small enough to not cause an overflow when applied to a 32-bit integer.

Rather than adding more magic numbers, add ACPI_ACCESS_*_SHIFT, ACPI_ACCESS_*_MAX, and ACPI_ACCESS_*_DEFAULT #defines and redefine ACPI_ACCESS_*_WIDTH in terms of the new #defines.

This was inititally reported on Linux where a size of 102 in ACPI_ACCESS_BIT_WIDTH caused an overflow error in the SPCR initialization code.

---
 include/acpi/actypes.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
include/acpi/actypes.h +8 -2
index 71fadbe77e211..2c5df69e67819 100644
@@ -560,8 +560,14 @@ typedef u64 acpi_integer;
  * Can be used with access_width of struct acpi_generic_address and access_size of
  * struct acpi_resource_generic_register.
  */
-#define ACPI_ACCESS_BIT_WIDTH(size)     (1 << ((size) + 2))
-#define ACPI_ACCESS_BYTE_WIDTH(size)    (1 << ((size) - 1))
+#define ACPI_ACCESS_BIT_SHIFT		2
+#define ACPI_ACCESS_BYTE_SHIFT		-1
+#define ACPI_ACCESS_BIT_MAX		(31 - ACPI_ACCESS_BIT_SHIFT)
+#define ACPI_ACCESS_BYTE_MAX		(31 - ACPI_ACCESS_BYTE_SHIFT)
+#define ACPI_ACCESS_BIT_DEFAULT		(8 - ACPI_ACCESS_BIT_SHIFT)
+#define ACPI_ACCESS_BYTE_DEFAULT	(8 - ACPI_ACCESS_BYTE_SHIFT)
+#define ACPI_ACCESS_BIT_WIDTH(size)	(1 << ((size) + ACPI_ACCESS_BIT_SHIFT))
+#define ACPI_ACCESS_BYTE_WIDTH(size)	(1 << ((size) + ACPI_ACCESS_BYTE_SHIFT))
 
 /*******************************************************************************
  *
Signature · 1 line
2.34.1
author maintainer
#119 lore raw

PATCH 119/186 ACPICA: Utilities: Avoid deleting the same object twice in a row

In reply to Greg Kroah-Hartman

From: Rafael J. Wysocki <[email protected]>

[ Upstream commit 1cdfe9e346b4c5509ffe19ccde880fd259d9f7a3 ]

ACPICA commit c11af67d8f7e3d381068ce7771322f2b5324d687

If original_count is 0 in acpi_ut_update_ref_count (), acpi_ut_delete_internal_obj () is invoked for the target object, which is incorrect, because that object has been deleted once already and the memory allocated to store it may have been reclaimed and allocated for a different purpose by the host OS. Moreover, a confusing debug message following the "Reference Count is already zero, cannot decrement" warning is printed in that case.

To fix this issue, make acpi_ut_update_ref_count () return after finding that original_count is 0 and printing the above warning.

---
 drivers/acpi/acpica/utdelete.c | 1 +
 1 file changed, 1 insertion(+)
drivers/acpi/acpica/utdelete.c +1 -0
index 61a979d0fbc5a..64a90ba71f18c 100644
@@ -442,6 +442,7 @@ acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
 			ACPI_WARNING((AE_INFO,
 				      "Obj %p, Reference Count is already zero, cannot decrement\n",
 				      object));
+			return;
 		}
 
 		ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
Signature · 1 line
2.34.1
author maintainer
#120 lore raw

PATCH 120/186 ACPICA: Executer: Fix the REFCLASS_REFOF case in acpi_ex_opcode_1A_0T_1R()

In reply to Greg Kroah-Hartman

From: Rafael J. Wysocki <[email protected]>

[ Upstream commit 24ea5f90ec9548044a6209685c5010edd66ffe8f ]

ACPICA commit d984f12041392fa4156b52e2f7e5c5e7bc38ad9e

If Operand[0] is a reference of the ACPI_REFCLASS_REFOF class, acpi_ex_opcode_1A_0T_1R () calls acpi_ns_get_attached_object () to obtain return_desc which may require additional resolution with the help of acpi_ex_read_data_from_field (). If the latter fails, the reference counter of the original return_desc is decremented which is incorrect, because acpi_ns_get_attached_object () does not increment the reference counter of the object returned by it.

This issue may lead to premature deletion of the attached object while it is still attached and a use-after-free and crash in the host OS. For example, this may happen when on evaluation of ref_of() a local region field where there is no registered handler for the given Operation Region.

Fix it by making acpi_ex_opcode_1A_0T_1R () return Status right away after a acpi_ex_read_data_from_field () failure.

---
 drivers/acpi/acpica/exoparg1.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/acpi/acpica/exoparg1.c +2 -1
index f787651348c11..9f4dbdb70111a 100644
@@ -1041,7 +1041,8 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
 						    (walk_state, return_desc,
 						     &temp_desc);
 						if (ACPI_FAILURE(status)) {
-							goto cleanup;
+							return_ACPI_STATUS
+							    (status);
 						}
 
 						return_desc = temp_desc;
Signature · 1 line
2.34.1
author maintainer
#121 lore raw

PATCH 121/186 ACPICA: Hardware: Do not flush CPU cache when entering S4 and S5

In reply to Greg Kroah-Hartman

From: Kirill A. Shutemov <[email protected]>

[ Upstream commit 1d4e0b3abb168b2ee1eca99c527cffa1b80b6161 ]

ACPICA commit 3dd7e1f3996456ef81bfe14cba29860e8d42949e

According to ACPI 6.4, Section 16.2, the CPU cache flushing is required on entering to S1, S2, and S3, but the ACPICA code flushes the CPU cache regardless of the sleep state.

Blind cache flush on entering S5 causes problems for TDX.

Flushing happens with WBINVD that is not supported in the TDX environment.

TDX only supports S5 and adjusting ACPICA code to conform to the spec more strictly fixes the issue.

---
 drivers/acpi/acpica/hwesleep.c  | 4 +++-
 drivers/acpi/acpica/hwsleep.c   | 4 +++-
 drivers/acpi/acpica/hwxfsleep.c | 2 --
 3 files changed, 6 insertions(+), 4 deletions(-)
drivers/acpi/acpica/hwesleep.c +3 -1
index 7f8c57177819f..45b392fa36657 100644
@@ -138,7 +138,9 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state)
 
 	/* Flush caches, as per ACPI specification */
 
-	ACPI_FLUSH_CPU_CACHE();
+	if (sleep_state < ACPI_STATE_S4) {
+		ACPI_FLUSH_CPU_CACHE();
+	}
 
 	status = acpi_os_enter_sleep(sleep_state, sleep_control, 0);
 	if (status == AE_CTRL_TERMINATE) {
drivers/acpi/acpica/hwsleep.c +3 -1
index 2c54d08b20ca6..9e50529bb3cc9 100644
@@ -149,7 +149,9 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
 
 	/* Flush caches, as per ACPI specification */
 
-	ACPI_FLUSH_CPU_CACHE();
+	if (sleep_state < ACPI_STATE_S4) {
+		ACPI_FLUSH_CPU_CACHE();
+	}
 
 	status = acpi_os_enter_sleep(sleep_state, pm1a_control, pm1b_control);
 	if (status == AE_CTRL_TERMINATE) {
drivers/acpi/acpica/hwxfsleep.c +0 -2
index 827c3242225d9..b3c7736611908 100644
@@ -223,8 +223,6 @@ acpi_status acpi_enter_sleep_state_s4bios(void)
 		return_ACPI_STATUS(status);
 	}
 
-	ACPI_FLUSH_CPU_CACHE();
-
 	status = acpi_hw_write_port(acpi_gbl_FADT.smi_command,
 				    (u32)acpi_gbl_FADT.s4_bios_request, 8);
 
Signature · 1 line
2.34.1
author maintainer
#122 lore raw

PATCH 122/186 btrfs: remove BUG_ON() in find_parent_nodes()

In reply to Greg Kroah-Hartman

From: Josef Bacik <[email protected]>

[ Upstream commit fcba0120edf88328524a4878d1d6f4ad39f2ec81 ]

We search for an extent entry with .offset = -1, which shouldn't be a thing, but corruption happens. Add an ASSERT() for the developers, return -EUCLEAN for mortals.

---
 fs/btrfs/backref.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
fs/btrfs/backref.c +6 -1
index 1cf75d1032e17..f2c2ac3343bac 100644
@@ -1163,7 +1163,12 @@ again:
 	ret = btrfs_search_slot(trans, fs_info->extent_root, &key, path, 0, 0);
 	if (ret < 0)
 		goto out;
-	BUG_ON(ret == 0);
+	if (ret == 0) {
+		/* This shouldn't happen, indicates a bug or fs corruption. */
+		ASSERT(ret != 0);
+		ret = -EUCLEAN;
+		goto out;
+	}
 
 #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
 	if (trans && likely(trans->type != __TRANS_DUMMY) &&
Signature · 1 line
2.34.1
author maintainer
#123 lore raw

PATCH 123/186 btrfs: remove BUG_ON(!eie) in find_parent_nodes

In reply to Greg Kroah-Hartman

From: Josef Bacik <[email protected]>

[ Upstream commit 9f05c09d6baef789726346397438cca4ec43c3ee ]

If we're looking for leafs that point to a data extent we want to record the extent items that point at our bytenr. At this point we have the reference and we know for a fact that this leaf should have a reference to our bytenr. However if there's some sort of corruption we may not find any references to our leaf, and thus could end up with eie == NULL. Replace this BUG_ON() with an ASSERT() and then return -EUCLEAN for the mortals.

---
 fs/btrfs/backref.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)
fs/btrfs/backref.c +11 -3
index f2c2ac3343bac..58dc96d7ecafa 100644
@@ -1315,10 +1315,18 @@ again:
 				goto out;
 			if (!ret && extent_item_pos) {
 				/*
-				 * we've recorded that parent, so we must extend
-				 * its inode list here
+				 * We've recorded that parent, so we must extend
+				 * its inode list here.
+				 *
+				 * However if there was corruption we may not
+				 * have found an eie, return an error in this
+				 * case.
 				 */
-				BUG_ON(!eie);
+				ASSERT(eie);
+				if (!eie) {
+					ret = -EUCLEAN;
+					goto out;
+				}
 				while (eie->next)
 					eie = eie->next;
 				eie->next = ref->inode_list;
Signature · 1 line
2.34.1
author maintainer
#124 lore raw

PATCH 124/186 net: mdio: Demote probed message to debug print

In reply to Greg Kroah-Hartman

From: Florian Fainelli <[email protected]>

[ Upstream commit 7590fc6f80ac2cbf23e6b42b668bbeded070850b ]

On systems with large numbers of MDIO bus/muxes the message indicating that a given MDIO bus has been successfully probed is repeated for as many buses we have, which can eat up substantial boot time for no reason, demote to a debug print.

---
 drivers/net/phy/mdio_bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/net/phy/mdio_bus.c +1 -1
index 5ef9bbbab3dbb..7b9480ce21a21 100644
@@ -392,7 +392,7 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner)
 	mdiobus_setup_mdiodev_from_board_info(bus, mdiobus_create_device);
 
 	bus->state = MDIOBUS_REGISTERED;
-	pr_info("%s: probed\n", bus->name);
+	dev_dbg(&bus->dev, "probed\n");
 	return 0;
 
 error:
Signature · 1 line
2.34.1
author maintainer
#125 lore raw

PATCH 125/186 mac80211: allow non-standard VHT MCS-10/11

In reply to Greg Kroah-Hartman

From: Ping-Ke Shih <[email protected]>

[ Upstream commit 04be6d337d37400ad5b3d5f27ca87645ee5a18a3 ]

Some AP can possibly try non-standard VHT rate and mac80211 warns and drops packets, and leads low TCP throughput.

Rate marked as a VHT rate but data is invalid: MCS: 10, NSS: 2
WARNING: CPU: 1 PID: 7817 at net/mac80211/rx.c:4856 ieee80211_rx_list+0x223/0x2f0 [mac8021

Since commit c27aa56a72b8 ("cfg80211: add VHT rate entries for MCS-10 and MCS-11") has added, mac80211 adds this support as well.

After this patch, throughput is good and iw can get the bitrate:
rx bitrate: 975.1 MBit/s VHT-MCS 10 80MHz short GI VHT-NSS 2
or

    rx bitrate:	1083.3 MBit/s VHT-MCS 11 80MHz short GI VHT-NSS 2
---
 net/mac80211/rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
net/mac80211/rx.c +1 -1
index cbe1177d95f9e..13cae95a34662 100644
@@ -4434,7 +4434,7 @@ void ieee80211_rx_napi(struct ieee80211_hw *hw, struct ieee80211_sta *pubsta,
 				goto drop;
 			break;
 		case RX_ENC_VHT:
-			if (WARN_ONCE(status->rate_idx > 9 ||
+			if (WARN_ONCE(status->rate_idx > 11 ||
 				      !status->nss ||
 				      status->nss > 8,
 				      "Rate marked as a VHT rate but data is invalid: MCS: %d, NSS: %d\n",
Signature · 1 line
2.34.1
author maintainer
#126 lore raw

PATCH 126/186 dm btree: add a defensive bounds check to insert_at()

In reply to Greg Kroah-Hartman

From: Joe Thornber <[email protected]>

[ Upstream commit 85bca3c05b6cca31625437eedf2060e846c4bbad ]

Corrupt metadata could trigger an out of bounds write.

---
 drivers/md/persistent-data/dm-btree.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
drivers/md/persistent-data/dm-btree.c +5 -3
index 8aae0624a2971..6383afb88f319 100644
@@ -83,14 +83,16 @@ void inc_children(struct dm_transaction_manager *tm, struct btree_node *n,
 }
 
 static int insert_at(size_t value_size, struct btree_node *node, unsigned index,
-		      uint64_t key, void *value)
-		      __dm_written_to_disk(value)
+		     uint64_t key, void *value)
+	__dm_written_to_disk(value)
 {
 	uint32_t nr_entries = le32_to_cpu(node->header.nr_entries);
+	uint32_t max_entries = le32_to_cpu(node->header.max_entries);
 	__le64 key_le = cpu_to_le64(key);
 
 	if (index > nr_entries ||
-	    index >= le32_to_cpu(node->header.max_entries)) {
+	    index >= max_entries ||
+	    nr_entries >= max_entries) {
 		DMERR("too many entries in btree node for insert");
 		__dm_unbless_for_disk(value);
 		return -ENOMEM;
Signature · 1 line
2.34.1
author maintainer
#127 lore raw

PATCH 127/186 dm space map common: add bounds check to sm_ll_lookup_bitmap()

In reply to Greg Kroah-Hartman

From: Joe Thornber <[email protected]>

[ Upstream commit cba23ac158db7f3cd48a923d6861bee2eb7a2978 ]

Corrupted metadata could warrant returning error from sm_ll_lookup_bitmap().

---
 drivers/md/persistent-data/dm-space-map-common.c | 5 +++++
 1 file changed, 5 insertions(+)
drivers/md/persistent-data/dm-space-map-common.c +5 -0
index a2eceb12f01d4..1095b90307aed 100644
@@ -279,6 +279,11 @@ int sm_ll_lookup_bitmap(struct ll_disk *ll, dm_block_t b, uint32_t *result)
 	struct disk_index_entry ie_disk;
 	struct dm_block *blk;
 
+	if (b >= ll->nr_blocks) {
+		DMERR_LIMIT("metadata block out of bounds");
+		return -EINVAL;
+	}
+
 	b = do_div(index, ll->entries_per_block);
 	r = ll->load_ie(ll, index, &ie_disk);
 	if (r < 0)
Signature · 1 line
2.34.1
author maintainer
#128 lore raw

PATCH 128/186 net: phy: marvell: configure RGMII delays for 88E1118

In reply to Greg Kroah-Hartman

From: Russell King (Oracle) <[email protected]>

[ Upstream commit f22725c95ececb703c3f741e8f946d23705630b7 ]

Corentin Labbe reports that the SSI 1328 does not work when allowing the PHY to operate at gigabit speeds, but does work with the generic PHY driver.

This appears to be because m88e1118_config_init() writes a fixed value to the MSCR register, claiming that this is to enable 1G speeds. However, this always sets bits 4 and 5, enabling RGMII transmit and receive delays. The suspicion is that the original board this was added for required the delays to make 1G speeds work.

Add the necessary configuration for RGMII delays for the 88E1118 to bring this into line with the requirements for RGMII support, and thus make the SSI 1328 work.

Corentin Labbe has tested this on gemini-ssi1328 and gemini-ns2502.

---
 drivers/net/phy/marvell.c | 6 ++++++
 1 file changed, 6 insertions(+)
drivers/net/phy/marvell.c +6 -0
index 727b991312a4e..3d8d765932934 100644
@@ -938,6 +938,12 @@ static int m88e1118_config_init(struct phy_device *phydev)
 	if (err < 0)
 		return err;
 
+	if (phy_interface_is_rgmii(phydev)) {
+		err = m88e1121_config_aneg_rgmii_delays(phydev);
+		if (err < 0)
+			return err;
+	}
+
 	/* Adjust LED Control */
 	if (phydev->dev_flags & MARVELL_PHY_M1118_DNS323_LEDS)
 		err = phy_write(phydev, 0x10, 0x1100);
Signature · 1 line
2.34.1
author maintainer
#129 lore raw

PATCH 129/186 serial: pl010: Drop CR register reset on set_termios

In reply to Greg Kroah-Hartman

From: Lukas Wunner <[email protected]>

[ Upstream commit 08a0c6dff91c965e39905cf200d22db989203ccb ]

pl010_set_termios() briefly resets the CR register to zero.

Where does this register write come from?

The PL010 driver's IRQ handler ambauart_int() originally modified the CR register without holding the port spinlock. ambauart_set_termios() also modified that register. To prevent concurrent read-modify-writes by the IRQ handler and to prevent transmission while changing baudrate, ambauart_set_termios() had to disable interrupts. That is achieved by writing zero to the CR register.

However in 2004 the PL010 driver was amended to acquire the port spinlock in the IRQ handler, obviating the need to disable interrupts in ->set_termios():
https://git.kernel.org/history/history/c/157c0342e591

That rendered the CR register write obsolete. Drop it.

---
 drivers/tty/serial/amba-pl010.c | 3 ---
 1 file changed, 3 deletions(-)
drivers/tty/serial/amba-pl010.c +0 -3
index 9ec4b8d2879f7..0698fbf3b6d61 100644
@@ -465,14 +465,11 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios,
 	if ((termios->c_cflag & CREAD) == 0)
 		uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
 
-	/* first, disable everything */
 	old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
 
 	if (UART_ENABLE_MS(port, termios->c_cflag))
 		old_cr |= UART010_CR_MSIE;
 
-	writel(0, uap->port.membase + UART010_CR);
-
 	/* Set baud rate */
 	quot -= 1;
 	writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
Signature · 1 line
2.34.1
author maintainer
#130 lore raw

PATCH 130/186 serial: core: Keep mctrl register state and cached copy in sync

In reply to Greg Kroah-Hartman

From: Lukas Wunner <[email protected]>

[ Upstream commit 93a770b7e16772530196674ffc79bb13fa927dc6 ]

struct uart_port contains a cached copy of the Modem Control signals. It is used to skip register writes in uart_update_mctrl() if the new signal state equals the old signal state. It also avoids a register read to obtain the current state of output signals.

When a uart_port is registered, uart_configure_port() changes signal state but neglects to keep the cached copy in sync. That may cause a subsequent register write to be incorrectly skipped. Fix it before it trips somebody up.

This behavior has been present ever since the serial core was introduced in 2002:
https://git.kernel.org/history/history/c/33c0d1b0c3eb

So far it was never an issue because the cached copy is initialized to 0 by kzalloc() and when uart_configure_port() is executed, at most DTR has been set by uart_set_options() or sunsu_console_setup(). Therefore, a stable designation seems unnecessary.

---
 drivers/tty/serial/serial_core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/tty/serial/serial_core.c +2 -1
index 16ce187390d8b..5f9a52883bc05 100644
@@ -2361,7 +2361,8 @@ uart_configure_port(struct uart_driver *drv, struct uart_state *state,
 		 * We probably don't need a spinlock around this, but
 		 */
 		spin_lock_irqsave(&port->lock, flags);
-		port->ops->set_mctrl(port, port->mctrl & TIOCM_DTR);
+		port->mctrl &= TIOCM_DTR;
+		port->ops->set_mctrl(port, port->mctrl);
 		spin_unlock_irqrestore(&port->lock, flags);
 
 		/*
Signature · 1 line
2.34.1
author maintainer
#131 lore raw

PATCH 131/186 parisc: Avoid calling faulthandler_disabled() twice

In reply to Greg Kroah-Hartman

From: John David Anglin <[email protected]>

[ Upstream commit 9e9d4b460f23bab61672eae397417d03917d116c ]

In handle_interruption(), we call faulthandler_disabled() to check whether the fault handler is not disabled. If the fault handler is disabled, we immediately call do_page_fault(). It then calls faulthandler_disabled(). If disabled, do_page_fault() attempts to fixup the exception by jumping to no_context:

no_context:

        if (!user_mode(regs) && fixup_exception(regs)) {
                return;
        }

        parisc_terminate("Bad Address (null pointer deref?)", regs, code, address);

Apart from the error messages, the two blocks of code perform the same function.

We can avoid two calls to faulthandler_disabled() by a simple revision to the code in handle_interruption().

Note: I didn't try to fix the formatting of this code block.

---
 arch/parisc/kernel/traps.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
arch/parisc/kernel/traps.c +1 -1
index 9a898d68f4a0d..346456c43aa0b 100644
@@ -795,7 +795,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
 	     * unless pagefault_disable() was called before.
 	     */
 
-	    if (fault_space == 0 && !faulthandler_disabled())
+	    if (faulthandler_disabled() || fault_space == 0)
 	    {
 		/* Clean up and return if in exception table. */
 		if (fixup_exception(regs))
Signature · 1 line
2.34.1
author maintainer
#132 lore raw

PATCH 132/186 powerpc/6xx: add missing of_node_put

In reply to Greg Kroah-Hartman

From: Julia Lawall <[email protected]>

[ Upstream commit f6e82647ff71d427d4148964b71f239fba9d7937 ]

for_each_compatible_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr):

// <smpl>
@@
expression e;
local idexpression n;
@@

@@
local idexpression n;
expression e;
@@

for_each_compatible_node(n,...) {
...
(
of_node_put(n);
|
e = n
|
+ of_node_put(n);
? break;
)
...
}
... when != n
// </smpl>

---
 arch/powerpc/platforms/embedded6xx/hlwd-pic.c | 1 +
 1 file changed, 1 insertion(+)
arch/powerpc/platforms/embedded6xx/hlwd-pic.c +1 -0
index bf4a125faec66..db2ea6b6889de 100644
@@ -220,6 +220,7 @@ void hlwd_pic_probe(void)
 			irq_set_chained_handler(cascade_virq,
 						hlwd_pic_irq_cascade);
 			hlwd_irq_host = host;
+			of_node_put(np);
 			break;
 		}
 	}
Signature · 1 line
2.34.1
author maintainer
#133 lore raw

PATCH 133/186 powerpc/powernv: add missing of_node_put

In reply to Greg Kroah-Hartman

From: Julia Lawall <[email protected]>

[ Upstream commit 7d405a939ca960162eb30c1475759cb2fdf38f8c ]

for_each_compatible_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr):

// <smpl>
@@
local idexpression n;
expression e;
@@

for_each_compatible_node(n,...) {
...
(
of_node_put(n);
|
e = n
|
+ of_node_put(n);
? break;
)
...
}
... when != n
// </smpl>

---
 arch/powerpc/platforms/powernv/opal-lpc.c | 1 +
 1 file changed, 1 insertion(+)
arch/powerpc/platforms/powernv/opal-lpc.c +1 -0
index 6c7ad1d8b32ed..21f0edcfb84ad 100644
@@ -400,6 +400,7 @@ void __init opal_lpc_init(void)
 		if (!of_get_property(np, "primary", NULL))
 			continue;
 		opal_lpc_chip_id = of_get_ibm_chip_id(np);
+		of_node_put(np);
 		break;
 	}
 	if (opal_lpc_chip_id < 0)
Signature · 1 line
2.34.1
author maintainer
#134 lore raw

PATCH 134/186 powerpc/cell: add missing of_node_put

In reply to Greg Kroah-Hartman

From: Julia Lawall <[email protected]>

[ Upstream commit a841fd009e51c8c0a8f07c942e9ab6bb48da8858 ]

for_each_node_by_name performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr):

// <smpl>
@@
expression e,e1;
local idexpression n;
@@

for_each_node_by_name(n, e1) {
... when != of_node_put(n)

       when != e = n

(
return n;
|
+ of_node_put(n);
? return ...;
)
...
}
// </smpl>

---
 arch/powerpc/platforms/cell/iommu.c | 1 +
 1 file changed, 1 insertion(+)
arch/powerpc/platforms/cell/iommu.c +1 -0
index 4b91ad08eefd9..c4f352387aec3 100644
@@ -1088,6 +1088,7 @@ static int __init cell_iommu_fixed_mapping_init(void)
 			if (hbase < dbase || (hend > (dbase + dsize))) {
 				pr_debug("iommu: hash window doesn't fit in"
 					 "real DMA window\n");
+				of_node_put(np);
 				return -1;
 			}
 		}
Signature · 1 line
2.34.1
author maintainer
#135 lore raw

PATCH 135/186 powerpc/btext: add missing of_node_put

In reply to Greg Kroah-Hartman

From: Julia Lawall <[email protected]>

[ Upstream commit a1d2b210ffa52d60acabbf7b6af3ef7e1e69cda0 ]

for_each_node_by_type performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr):

// <smpl>
@@
local idexpression n;
expression e;
@@

for_each_node_by_type(n,...) {
...
(
of_node_put(n);
|
e = n
|
+ of_node_put(n);
? break;
)
...
}
... when != n
// </smpl>

---
 arch/powerpc/kernel/btext.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
arch/powerpc/kernel/btext.c +3 -1
index 6537cba1a7580..d1a2fc7186ce7 100644
@@ -258,8 +258,10 @@ int __init btext_find_display(int allow_nonstdout)
 			rc = btext_initialize(np);
 			printk("result: %d\n", rc);
 		}
-		if (rc == 0)
+		if (rc == 0) {
+			of_node_put(np);
 			break;
+		}
 	}
 	return rc;
 }
Signature · 1 line
2.34.1
author maintainer
#136 lore raw

PATCH 136/186 powerpc/watchdog: Fix missed watchdog reset due to memory ordering race

In reply to Greg Kroah-Hartman

From: Nicholas Piggin <[email protected]>

[ Upstream commit 5dad4ba68a2483fc80d70b9dc90bbe16e1f27263 ]

It is possible for all CPUs to miss the pending cpumask becoming clear, and then nobody resetting it, which will cause the lockup detector to stop working. It will eventually expire, but watchdog_smp_panic will avoid doing anything if the pending mask is clear and it will never be reset.

Order the cpumask clear vs the subsequent test to close this race.

Add an extra check for an empty pending mask when the watchdog fires and finds its bit still clear, to try to catch any other possible races or bugs here and keep the watchdog working. The extra test in arch_touch_nmi_watchdog is required to prevent the new warning from firing off.

---
 arch/powerpc/kernel/watchdog.c | 41 +++++++++++++++++++++++++++++++++-
 1 file changed, 40 insertions(+), 1 deletion(-)
arch/powerpc/kernel/watchdog.c +40 -1
index ce848ff84eddf..1617767ebc9ae 100644
@@ -106,6 +106,10 @@ static void set_cpumask_stuck(const struct cpumask *cpumask, u64 tb)
 {
 	cpumask_or(&wd_smp_cpus_stuck, &wd_smp_cpus_stuck, cpumask);
 	cpumask_andnot(&wd_smp_cpus_pending, &wd_smp_cpus_pending, cpumask);
+	/*
+	 * See wd_smp_clear_cpu_pending()
+	 */
+	smp_mb();
 	if (cpumask_empty(&wd_smp_cpus_pending)) {
 		wd_smp_last_reset_tb = tb;
 		cpumask_andnot(&wd_smp_cpus_pending,
@@ -177,13 +181,44 @@ static void wd_smp_clear_cpu_pending(int cpu, u64 tb)
 			wd_smp_lock(&flags);
 			cpumask_clear_cpu(cpu, &wd_smp_cpus_stuck);
 			wd_smp_unlock(&flags);
+		} else {
+			/*
+			 * The last CPU to clear pending should have reset the
+			 * watchdog so we generally should not find it empty
+			 * here if our CPU was clear. However it could happen
+			 * due to a rare race with another CPU taking the
+			 * last CPU out of the mask concurrently.
+			 *
+			 * We can't add a warning for it. But just in case
+			 * there is a problem with the watchdog that is causing
+			 * the mask to not be reset, try to kick it along here.
+			 */
+			if (unlikely(cpumask_empty(&wd_smp_cpus_pending)))
+				goto none_pending;
 		}
 		return;
 	}
+
 	cpumask_clear_cpu(cpu, &wd_smp_cpus_pending);
+
+	/*
+	 * Order the store to clear pending with the load(s) to check all
+	 * words in the pending mask to check they are all empty. This orders
+	 * with the same barrier on another CPU. This prevents two CPUs
+	 * clearing the last 2 pending bits, but neither seeing the other's
+	 * store when checking if the mask is empty, and missing an empty
+	 * mask, which ends with a false positive.
+	 */
+	smp_mb();
 	if (cpumask_empty(&wd_smp_cpus_pending)) {
 		unsigned long flags;
 
+none_pending:
+		/*
+		 * Double check under lock because more than one CPU could see
+		 * a clear mask with the lockless check after clearing their
+		 * pending bits.
+		 */
 		wd_smp_lock(&flags);
 		if (cpumask_empty(&wd_smp_cpus_pending)) {
 			wd_smp_last_reset_tb = tb;
@@ -276,8 +311,12 @@ void arch_touch_nmi_watchdog(void)
 {
 	unsigned long ticks = tb_ticks_per_usec * wd_timer_period_ms * 1000;
 	int cpu = smp_processor_id();
-	u64 tb = get_tb();
+	u64 tb;
+
+	if (!cpumask_test_cpu(cpu, &watchdog_cpumask))
+		return;
 
+	tb = get_tb();
 	if (tb - per_cpu(wd_timer_tb, cpu) >= ticks) {
 		per_cpu(wd_timer_tb, cpu) = tb;
 		wd_smp_clear_cpu_pending(cpu, tb);
Signature · 1 line
2.34.1
author maintainer
#137 lore raw

PATCH 137/186 i2c: i801: Dont silently correct invalid transfer size

In reply to Greg Kroah-Hartman

From: Heiner Kallweit <[email protected]>

[ Upstream commit effa453168a7eeb8a562ff4edc1dbf9067360a61 ]

If an invalid block size is provided, reject it instead of silently changing it to a supported value. Especially critical I see the case of a write transfer with block length 0. In this case we have no guarantee that the byte we would write is valid. When silently reducing a read to 32 bytes then we don't return an error and the caller may falsely assume that we returned the full requested data.

If this change should break any (broken) caller, then I think we should fix the caller.

---
 drivers/i2c/busses/i2c-i801.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)
drivers/i2c/busses/i2c-i801.c +5 -10
index 7b1654b0fb6db..c817e3d4b52b8 100644
@@ -769,6 +769,11 @@ static int i801_block_transaction(struct i801_priv *priv,
 	int result = 0;
 	unsigned char hostc;
 
+	if (read_write == I2C_SMBUS_READ && command == I2C_SMBUS_BLOCK_DATA)
+		data->block[0] = I2C_SMBUS_BLOCK_MAX;
+	else if (data->block[0] < 1 || data->block[0] > I2C_SMBUS_BLOCK_MAX)
+		return -EPROTO;
+
 	if (command == I2C_SMBUS_I2C_BLOCK_DATA) {
 		if (read_write == I2C_SMBUS_WRITE) {
 			/* set I2C_EN bit in configuration register */
@@ -782,16 +787,6 @@ static int i801_block_transaction(struct i801_priv *priv,
 		}
 	}
 
-	if (read_write == I2C_SMBUS_WRITE
-	 || command == I2C_SMBUS_I2C_BLOCK_DATA) {
-		if (data->block[0] < 1)
-			data->block[0] = 1;
-		if (data->block[0] > I2C_SMBUS_BLOCK_MAX)
-			data->block[0] = I2C_SMBUS_BLOCK_MAX;
-	} else {
-		data->block[0] = 32;	/* max for SMBus block reads */
-	}
-
 	/* Experience has shown that the block buffer can only be used for
 	   SMBus (not I2C) block transactions, even though the datasheet
 	   doesn't mention this limitation. */
Signature · 1 line
2.34.1
author maintainer
#138 lore raw

PATCH 138/186 powerpc/smp: Move setup_profiling_timer() under CONFIG_PROFILING

In reply to Greg Kroah-Hartman

From: Michael Ellerman <[email protected]>

[ Upstream commit a4ac0d249a5db80e79d573db9e4ad29354b643a8 ]

setup_profiling_timer() is only needed when CONFIG_PROFILING is enabled.

Fixes the following W=1 warning when CONFIG_PROFILING=n:
linux/arch/powerpc/kernel/smp.c:1638:5: error: no previous prototype for ‘setup_profiling_timer’

---
 arch/powerpc/kernel/smp.c | 2 ++
 1 file changed, 2 insertions(+)
arch/powerpc/kernel/smp.c +2 -0
index 7c7aa7c98ba31..cf25b95ceee13 100644
@@ -1009,10 +1009,12 @@ void start_secondary(void *unused)
 	BUG();
 }
 
+#ifdef CONFIG_PROFILING
 int setup_profiling_timer(unsigned int multiplier)
 {
 	return 0;
 }
+#endif
 
 #ifdef CONFIG_SCHED_SMT
 /* cpumask of CPUs with asymetric SMT dependancy */
Signature · 1 line
2.34.1
author maintainer
#139 lore raw

PATCH 139/186 i2c: mpc: Correct I2C reset procedure

In reply to Greg Kroah-Hartman

From: Joakim Tjernlund <[email protected]>

[ Upstream commit ebe82cf92cd4825c3029434cabfcd2f1780e64be ]

Current I2C reset procedure is broken in two ways:
1) It only generate 1 START instead of 9 STARTs and STOP.
2) It leaves the bus Busy so every I2C xfer after the first fixup calls the reset routine again, for every xfer there after.

This fixes both errors.

---
 drivers/i2c/busses/i2c-mpc.c | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)
drivers/i2c/busses/i2c-mpc.c +15 -8
index 7db5554d2b4e7..194bf06ecb25e 100644
@@ -107,23 +107,30 @@ static irqreturn_t mpc_i2c_isr(int irq, void *dev_id)
 /* Sometimes 9th clock pulse isn't generated, and slave doesn't release
  * the bus, because it wants to send ACK.
  * Following sequence of enabling/disabling and sending start/stop generates
- * the 9 pulses, so it's all OK.
+ * the 9 pulses, each with a START then ending with STOP, so it's all OK.
  */
 static void mpc_i2c_fixup(struct mpc_i2c *i2c)
 {
 	int k;
-	u32 delay_val = 1000000 / i2c->real_clk + 1;
-
-	if (delay_val < 2)
-		delay_val = 2;
+	unsigned long flags;
 
 	for (k = 9; k; k--) {
 		writeccr(i2c, 0);
-		writeccr(i2c, CCR_MSTA | CCR_MTX | CCR_MEN);
+		writeb(0, i2c->base + MPC_I2C_SR); /* clear any status bits */
+		writeccr(i2c, CCR_MEN | CCR_MSTA); /* START */
+		readb(i2c->base + MPC_I2C_DR); /* init xfer */
+		udelay(15); /* let it hit the bus */
+		local_irq_save(flags); /* should not be delayed further */
+		writeccr(i2c, CCR_MEN | CCR_MSTA | CCR_RSTA); /* delay SDA */
 		readb(i2c->base + MPC_I2C_DR);
-		writeccr(i2c, CCR_MEN);
-		udelay(delay_val << 1);
+		if (k != 1)
+			udelay(5);
+		local_irq_restore(flags);
 	}
+	writeccr(i2c, CCR_MEN); /* Initiate STOP */
+	readb(i2c->base + MPC_I2C_DR);
+	udelay(15); /* Let STOP propagate */
+	writeccr(i2c, 0);
 }
 
 static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing)
Signature · 1 line
2.34.1
author maintainer
#140 lore raw

PATCH 140/186 w1: Misuse of get_user()/put_user() reported by sparse

In reply to Greg Kroah-Hartman

From: Christophe Leroy <[email protected]>

[ Upstream commit 33dc3e3e99e626ce51f462d883b05856c6c30b1d ]

sparse warnings: (new ones prefixed by >>)

Quoted 1 line
Quoted 1 line

drivers/w1/slaves/w1_ds28e04.c:342:13: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected char [noderef] __user *_pu_addr @@ got char *buf @@

drivers/w1/slaves/w1_ds28e04.c:342:13: sparse: expected char [noderef] __user *_pu_addr
drivers/w1/slaves/w1_ds28e04.c:342:13: sparse: got char *buf

Quoted 1 line
Quoted 1 line

drivers/w1/slaves/w1_ds28e04.c:356:13: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected char const [noderef] __user *_gu_addr @@ got char const *buf @@

drivers/w1/slaves/w1_ds28e04.c:356:13: sparse: expected char const [noderef] __user *_gu_addr
drivers/w1/slaves/w1_ds28e04.c:356:13: sparse: got char const *buf

The buffer buf is a failsafe buffer in kernel space, it's not user memory hence doesn't deserve the use of get_user() or put_user().

Access 'buf' content directly.

---
 drivers/w1/slaves/w1_ds28e04.c | 26 ++++++--------------------
 1 file changed, 6 insertions(+), 20 deletions(-)
drivers/w1/slaves/w1_ds28e04.c +6 -20
index ec234b846eb3c..e5eb19a34ee2a 100644
@@ -34,7 +34,7 @@ static int w1_strong_pullup = 1;
 module_param_named(strong_pullup, w1_strong_pullup, int, 0);
 
 /* enable/disable CRC checking on DS28E04-100 memory accesses */
-static char w1_enable_crccheck = 1;
+static bool w1_enable_crccheck = true;
 
 #define W1_EEPROM_SIZE		512
 #define W1_PAGE_COUNT		16
@@ -341,32 +341,18 @@ static BIN_ATTR_RW(pio, 1);
 static ssize_t crccheck_show(struct device *dev, struct device_attribute *attr,
 			     char *buf)
 {
-	if (put_user(w1_enable_crccheck + 0x30, buf))
-		return -EFAULT;
-
-	return sizeof(w1_enable_crccheck);
+	return sysfs_emit(buf, "%d\n", w1_enable_crccheck);
 }
 
 static ssize_t crccheck_store(struct device *dev, struct device_attribute *attr,
 			      const char *buf, size_t count)
 {
-	char val;
-
-	if (count != 1 || !buf)
-		return -EINVAL;
+	int err = kstrtobool(buf, &w1_enable_crccheck);
 
-	if (get_user(val, buf))
-		return -EFAULT;
+	if (err)
+		return err;
 
-	/* convert to decimal */
-	val = val - 0x30;
-	if (val != 0 && val != 1)
-		return -EINVAL;
-
-	/* set the new value */
-	w1_enable_crccheck = val;
-
-	return sizeof(w1_enable_crccheck);
+	return count;
 }
 
 static DEVICE_ATTR_RW(crccheck);
Signature · 1 line
2.34.1
author maintainer
#141 lore raw

PATCH 141/186 ALSA: seq: Set upper limit of processed events

In reply to Greg Kroah-Hartman

From: Takashi Iwai <[email protected]>

[ Upstream commit 6fadb494a638d8b8a55864ecc6ac58194f03f327 ]

Currently ALSA sequencer core tries to process the queued events as much as possible when they become dispatchable. If applications try to queue too massive events to be processed at the very same timing, the sequencer core would still try to process such all events, either in the interrupt context or via some notifier; in either away, it might be a cause of RCU stall or such problems.

As a potential workaround for those problems, this patch adds the upper limit of the amount of events to be processed. The remaining events are processed in the next batch, so they won't be lost.

For the time being, it's limited up to 1000 events per queue, which should be high enough for any normal usages.

---
 sound/core/seq/seq_queue.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)
sound/core/seq/seq_queue.c +12 -2
index ea1aa07962761..b923059a22276 100644
@@ -257,12 +257,15 @@ struct snd_seq_queue *snd_seq_queue_find_name(char *name)
 
 /* -------------------------------------------------------- */
 
+#define MAX_CELL_PROCESSES_IN_QUEUE	1000
+
 void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
 {
 	unsigned long flags;
 	struct snd_seq_event_cell *cell;
 	snd_seq_tick_time_t cur_tick;
 	snd_seq_real_time_t cur_time;
+	int processed = 0;
 
 	if (q == NULL)
 		return;
@@ -285,6 +288,8 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
 		if (!cell)
 			break;
 		snd_seq_dispatch_event(cell, atomic, hop);
+		if (++processed >= MAX_CELL_PROCESSES_IN_QUEUE)
+			goto out; /* the rest processed at the next batch */
 	}
 
 	/* Process time queue... */
@@ -294,14 +299,19 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
 		if (!cell)
 			break;
 		snd_seq_dispatch_event(cell, atomic, hop);
+		if (++processed >= MAX_CELL_PROCESSES_IN_QUEUE)
+			goto out; /* the rest processed at the next batch */
 	}
 
+ out:
 	/* free lock */
 	spin_lock_irqsave(&q->check_lock, flags);
 	if (q->check_again) {
 		q->check_again = 0;
-		spin_unlock_irqrestore(&q->check_lock, flags);
-		goto __again;
+		if (processed < MAX_CELL_PROCESSES_IN_QUEUE) {
+			spin_unlock_irqrestore(&q->check_lock, flags);
+			goto __again;
+		}
 	}
 	q->check_blocked = 0;
 	spin_unlock_irqrestore(&q->check_lock, flags);
Signature · 1 line
2.34.1
author maintainer
#142 lore raw

PATCH 142/186 MIPS: OCTEON: add put_device() after of_find_device_by_node()

In reply to Greg Kroah-Hartman

From: Ye Guojin <[email protected]>

[ Upstream commit 858779df1c0787d3fec827fb705708df9ebdb15b ]

This was found by coccicheck:
./arch/mips/cavium-octeon/octeon-platform.c, 332, 1-7, ERROR missing put_device; call of_find_device_by_node on line 324, but without a corresponding object release within this function. ./arch/mips/cavium-octeon/octeon-platform.c, 395, 1-7, ERROR missing put_device; call of_find_device_by_node on line 387, but without a corresponding object release within this function. ./arch/mips/cavium-octeon/octeon-usb.c, 512, 3-9, ERROR missing put_device; call of_find_device_by_node on line 515, but without a corresponding object release within this function. ./arch/mips/cavium-octeon/octeon-usb.c, 543, 1-7, ERROR missing put_device; call of_find_device_by_node on line 515, but without a corresponding object release within this function.

---
 arch/mips/cavium-octeon/octeon-platform.c | 2 ++
 arch/mips/cavium-octeon/octeon-usb.c      | 1 +
 2 files changed, 3 insertions(+)
arch/mips/cavium-octeon/octeon-platform.c +2 -0
index e1e24118c169e..ed42fc27033c4 100644
@@ -328,6 +328,7 @@ static int __init octeon_ehci_device_init(void)
 
 	pd->dev.platform_data = &octeon_ehci_pdata;
 	octeon_ehci_hw_start(&pd->dev);
+	put_device(&pd->dev);
 
 	return ret;
 }
@@ -391,6 +392,7 @@ static int __init octeon_ohci_device_init(void)
 
 	pd->dev.platform_data = &octeon_ohci_pdata;
 	octeon_ohci_hw_start(&pd->dev);
+	put_device(&pd->dev);
 
 	return ret;
 }
arch/mips/cavium-octeon/octeon-usb.c +1 -0
index 75189ff2f3c78..3465452e28195 100644
@@ -543,6 +543,7 @@ static int __init dwc3_octeon_device_init(void)
 			devm_iounmap(&pdev->dev, base);
 			devm_release_mem_region(&pdev->dev, res->start,
 						resource_size(res));
+			put_device(&pdev->dev);
 		}
 	} while (node != NULL);
 
Signature · 1 line
2.34.1
author maintainer
#143 lore raw

PATCH 143/186 i2c: designware-pci: Fix to change data types of hcnt and lcnt parameters

In reply to Greg Kroah-Hartman

From: Lakshmi Sowjanya D <[email protected]>

[ Upstream commit d52097010078c1844348dc0e467305e5f90fd317 ]

The data type of hcnt and lcnt in the struct dw_i2c_dev is of type u16. It's better to have same data type in struct dw_scl_sda_cfg as well.

---
 drivers/i2c/busses/i2c-designware-pcidrv.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
drivers/i2c/busses/i2c-designware-pcidrv.c +4 -4
index 86e1bd0b82e91..347d82dff67c0 100644
@@ -50,10 +50,10 @@ enum dw_pci_ctl_id_t {
 };
 
 struct dw_scl_sda_cfg {
-	u32 ss_hcnt;
-	u32 fs_hcnt;
-	u32 ss_lcnt;
-	u32 fs_lcnt;
+	u16 ss_hcnt;
+	u16 fs_hcnt;
+	u16 ss_lcnt;
+	u16 fs_lcnt;
 	u32 sda_hold;
 };
 
Signature · 1 line
2.34.1
author maintainer
#144 lore raw

PATCH 144/186 MIPS: Octeon: Fix build errors using clang

In reply to Greg Kroah-Hartman

From: Tianjia Zhang <[email protected]>

[ Upstream commit 95339b70677dc6f9a2d669c4716058e71b8dc1c7 ]

A large number of the following errors is reported when compiling with clang:

cvmx-bootinfo.h:326:3: error: adding 'int' to a string does not append to the string [-Werror,-Wstring-plus-int]

                  ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_NULL)
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  cvmx-bootinfo.h:321:20: note: expanded from macro 'ENUM_BRD_TYPE_CASE'
          case x: return(#x + 16);        /* Skip CVMX_BOARD_TYPE_ */
                         ~~~^~~~
  cvmx-bootinfo.h:326:3: note: use array indexing to silence this warning
  cvmx-bootinfo.h:321:20: note: expanded from macro 'ENUM_BRD_TYPE_CASE'
          case x: return(#x + 16);        /* Skip CVMX_BOARD_TYPE_ */
                          ^

Follow the prompts to use the address operator '&' to fix this error.

---
 arch/mips/include/asm/octeon/cvmx-bootinfo.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
arch/mips/include/asm/octeon/cvmx-bootinfo.h +2 -2
index 62787765575ef..ce6e5fddce0bf 100644
@@ -315,7 +315,7 @@ enum cvmx_chip_types_enum {
 
 /* Functions to return string based on type */
 #define ENUM_BRD_TYPE_CASE(x) \
-	case x: return(#x + 16);	/* Skip CVMX_BOARD_TYPE_ */
+	case x: return (&#x[16]);	/* Skip CVMX_BOARD_TYPE_ */
 static inline const char *cvmx_board_type_to_string(enum
 						    cvmx_board_types_enum type)
 {
@@ -404,7 +404,7 @@ static inline const char *cvmx_board_type_to_string(enum
 }
 
 #define ENUM_CHIP_TYPE_CASE(x) \
-	case x: return(#x + 15);	/* Skip CVMX_CHIP_TYPE */
+	case x: return (&#x[15]);	/* Skip CVMX_CHIP_TYPE */
 static inline const char *cvmx_chip_type_to_string(enum
 						   cvmx_chip_types_enum type)
 {
Signature · 1 line
2.34.1
author maintainer
#145 lore raw

PATCH 145/186 scsi: sr: Dont use GFP_DMA

In reply to Greg Kroah-Hartman

From: Christoph Hellwig <[email protected]>

[ Upstream commit d94d94969a4ba07a43d62429c60372320519c391 ]

The allocated buffers are used as a command payload, for which the block layer and/or DMA API do the proper bounce buffering if needed.

---
 drivers/scsi/sr.c        | 2 +-
 drivers/scsi/sr_vendor.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
drivers/scsi/sr.c +1 -1
index be2daf5536ff7..180087d1c6cdb 100644
@@ -885,7 +885,7 @@ static void get_capabilities(struct scsi_cd *cd)
 
 
 	/* allocate transfer buffer */
-	buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
+	buffer = kmalloc(512, GFP_KERNEL);
 	if (!buffer) {
 		sr_printk(KERN_ERR, cd, "out of memory.\n");
 		return;
drivers/scsi/sr_vendor.c +2 -2
index e3b0ce25162ba..2887be4316be9 100644
@@ -119,7 +119,7 @@ int sr_set_blocklength(Scsi_CD *cd, int blocklength)
 		density = (blocklength > 2048) ? 0x81 : 0x83;
 #endif
 
-	buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
+	buffer = kmalloc(512, GFP_KERNEL);
 	if (!buffer)
 		return -ENOMEM;
 
@@ -167,7 +167,7 @@ int sr_cd_check(struct cdrom_device_info *cdi)
 	if (cd->cdi.mask & CDC_MULTI_SESSION)
 		return 0;
 
-	buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
+	buffer = kmalloc(512, GFP_KERNEL);
 	if (!buffer)
 		return -ENOMEM;
 
Signature · 1 line
2.34.1
author maintainer
#146 lore raw

PATCH 146/186 ASoC: mediatek: mt8173: fix device_node leak

In reply to Greg Kroah-Hartman

From: Tzung-Bi Shih <[email protected]>

[ Upstream commit 493433785df0075afc0c106ab65f10a605d0b35d ]

Fixes the device_node leak.

---
 sound/soc/mediatek/mt8173/mt8173-max98090.c      | 3 +++
 sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c | 2 ++
 sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c | 2 ++
 sound/soc/mediatek/mt8173/mt8173-rt5650.c        | 2 ++
 4 files changed, 9 insertions(+)
sound/soc/mediatek/mt8173/mt8173-max98090.c +3 -0
index e0c2b23ec7118..0adb7ded61e9c 100644
@@ -177,6 +177,9 @@ static int mt8173_max98090_dev_probe(struct platform_device *pdev)
 	if (ret)
 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 			__func__, ret);
+
+	of_node_put(codec_node);
+	of_node_put(platform_node);
 	return ret;
 }
 
sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c +2 -0
index 99c15219dbc81..aa52e2f81760a 100644
@@ -227,6 +227,8 @@ static int mt8173_rt5650_rt5514_dev_probe(struct platform_device *pdev)
 	if (ret)
 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 			__func__, ret);
+
+	of_node_put(platform_node);
 	return ret;
 }
 
sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c +2 -0
index 42de84ca8c844..61b0d8f8678e9 100644
@@ -284,6 +284,8 @@ static int mt8173_rt5650_rt5676_dev_probe(struct platform_device *pdev)
 	if (ret)
 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 			__func__, ret);
+
+	of_node_put(platform_node);
 	return ret;
 }
 
sound/soc/mediatek/mt8173/mt8173-rt5650.c +2 -0
index e69c141d8ed4c..3492c02f72c1a 100644
@@ -316,6 +316,8 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
 	if (ret)
 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 			__func__, ret);
+
+	of_node_put(platform_node);
 	return ret;
 }
 
Signature · 1 line
2.34.1
author maintainer
#147 lore raw

PATCH 147/186 power: bq25890: Enable continuous conversion for ADC at charging

In reply to Greg Kroah-Hartman

From: Yauhen Kharuzhy <[email protected]>

[ Upstream commit 80211be1b9dec04cc2805d3d81e2091ecac289a1 ]

Instead of one shot run of ADC at beginning of charging, run continuous conversion to ensure that all charging-related values are monitored properly (input voltage, input current, themperature etc.).

---
 drivers/power/supply/bq25890_charger.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/power/supply/bq25890_charger.c +2 -2
index 8e2c41ded171c..e90253b3f6561 100644
@@ -521,12 +521,12 @@ static void bq25890_handle_state_change(struct bq25890_device *bq,
 
 	if (!new_state->online) {			     /* power removed */
 		/* disable ADC */
-		ret = bq25890_field_write(bq, F_CONV_START, 0);
+		ret = bq25890_field_write(bq, F_CONV_RATE, 0);
 		if (ret < 0)
 			goto error;
 	} else if (!old_state.online) {			    /* power inserted */
 		/* enable ADC, to have control of charge current/voltage */
-		ret = bq25890_field_write(bq, F_CONV_START, 1);
+		ret = bq25890_field_write(bq, F_CONV_RATE, 1);
 		if (ret < 0)
 			goto error;
 	}
Signature · 1 line
2.34.1
author maintainer
#148 lore raw

PATCH 148/186 ubifs: Error path in ubifs_remount_rw() seems to wrongly free write buffers

In reply to Greg Kroah-Hartman

From: Petr Cvachoucek <[email protected]>

commit 3fea4d9d160186617ff40490ae01f4f4f36b28ff upstream.

it seems freeing the write buffers in the error path of the ubifs_remount_rw() is wrong. It leads later to a kernel oops like this:

[10016.431274] UBIFS (ubi0:0): start fixing up free space
[10090.810042] UBIFS (ubi0:0): free space fixup complete
[10090.814623] UBIFS error (ubi0:0 pid 512): ubifs_remount_fs: cannot
spawn "ubifs_bgt0_0", error -4
[10101.915108] UBIFS (ubi0:0): background thread "ubifs_bgt0_0" started,
PID 517
[10105.275498] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000030
[10105.284352] Mem abort info:
[10105.287160]   ESR = 0x96000006
[10105.290252]   EC = 0x25: DABT (current EL), IL = 32 bits
[10105.295592]   SET = 0, FnV = 0
[10105.298652]   EA = 0, S1PTW = 0
[10105.301848] Data abort info:
[10105.304723]   ISV = 0, ISS = 0x00000006
[10105.308573]   CM = 0, WnR = 0
[10105.311564] user pgtable: 4k pages, 48-bit VAs, pgdp=00000000f03d1000
[10105.318034] [0000000000000030] pgd=00000000f6cee003,
pud=00000000f4884003, pmd=0000000000000000
[10105.326783] Internal error: Oops: 96000006 [#1] PREEMPT SMP
[10105.332355] Modules linked in: ath10k_pci ath10k_core ath mac80211
libarc4 cfg80211 nvme nvme_core cryptodev(O)
[10105.342468] CPU: 3 PID: 518 Comm: touch Tainted: G           O
5.4.3 #1
[10105.349517] Hardware name: HYPEX CPU (DT)
[10105.353525] pstate: 40000005 (nZcv daif -PAN -UAO)
[10105.358324] pc : atomic64_try_cmpxchg_acquire.constprop.22+0x8/0x34
[10105.364596] lr : mutex_lock+0x1c/0x34
[10105.368253] sp : ffff000075633aa0
[10105.371563] x29: ffff000075633aa0 x28: 0000000000000001
[10105.376874] x27: ffff000076fa80c8 x26: 0000000000000004
[10105.382185] x25: 0000000000000030 x24: 0000000000000000
[10105.387495] x23: 0000000000000000 x22: 0000000000000038
[10105.392807] x21: 000000000000000c x20: ffff000076fa80c8
[10105.398119] x19: ffff000076fa8000 x18: 0000000000000000
[10105.403429] x17: 0000000000000000 x16: 0000000000000000
[10105.408741] x15: 0000000000000000 x14: fefefefefefefeff
[10105.414052] x13: 0000000000000000 x12: 0000000000000fe0
[10105.419364] x11: 0000000000000fe0 x10: ffff000076709020
[10105.424675] x9 : 0000000000000000 x8 : 00000000000000a0
[10105.429986] x7 : ffff000076fa80f4 x6 : 0000000000000030
[10105.435297] x5 : 0000000000000000 x4 : 0000000000000000
[10105.440609] x3 : 0000000000000000 x2 : ffff00006f276040
[10105.445920] x1 : ffff000075633ab8 x0 : 0000000000000030
[10105.451232] Call trace:
[10105.453676]  atomic64_try_cmpxchg_acquire.constprop.22+0x8/0x34
[10105.459600]  ubifs_garbage_collect+0xb4/0x334
[10105.463956]  ubifs_budget_space+0x398/0x458
[10105.468139]  ubifs_create+0x50/0x180
[10105.471712]  path_openat+0x6a0/0x9b0
[10105.475284]  do_filp_open+0x34/0x7c
[10105.478771]  do_sys_open+0x78/0xe4
[10105.482170]  __arm64_sys_openat+0x1c/0x24
[10105.486180]  el0_svc_handler+0x84/0xc8
[10105.489928]  el0_svc+0x8/0xc
[10105.492808] Code: 52800013 17fffffb d2800003 f9800011 (c85ffc05)
[10105.498903] ---[ end trace 46b721d93267a586 ]---

To reproduce the problem:

1. Filesystem initially mounted read-only, free space fixup flag set.

2. mount -o remount,rw <mountpoint>

3. it takes some time (free space fixup running)
... try to terminate running mount by CTRL-C
... does not respond, only after free space fixup is complete ... then "ubifs_remount_fs: cannot spawn "ubifs_bgt0_0", error -4"

4. mount -o remount,rw <mountpoint>
... now finished instantly (fixup already done).

5. Create file or just unmount the filesystem and we get the oops.

Fixes b50b9f408502 ("UBIFS: do not free write-buffers when in R/O mode")
---
 fs/ubifs/super.c |    1 -
 1 file changed, 1 deletion(-)
fs/ubifs/super.c +0 -1
@@ -1706,7 +1706,6 @@ out:
 		kthread_stop(c->bgt);
 		c->bgt = NULL;
 	}
-	free_wbufs(c);
 	kfree(c->write_reserve_buf);
 	c->write_reserve_buf = NULL;
 	vfree(c->ileb_buf);
author maintainer
#149 lore raw

PATCH 149/186 serial: Fix incorrect rs485 polarity on uart open

In reply to Greg Kroah-Hartman

From: Lukas Wunner <[email protected]>

commit d3b3404df318504ec084213ab1065b73f49b0f1d upstream.

Commit a6845e1e1b78 ("serial: core: Consider rs485 settings to drive RTS") sought to deassert RTS when opening an rs485-enabled uart port. That way, the transceiver does not occupy the bus until it transmits data.

Unfortunately, the commit mixed up the logic and *asserted* RTS instead of *deasserting* it:

The commit amended uart_port_dtr_rts(), which raises DTR and RTS when opening an rs232 port. "Raising" actually means lowering the signal that's coming out of the uart, because an rs232 transceiver not only changes a signal's voltage level, it also *inverts* the signal. See the simplified schematic in the MAX232 datasheet for an example:
https://www.ti.com/lit/ds/symlink/max232.pdf

So, to raise RTS on an rs232 port, TIOCM_RTS is *set* in port->mctrl and that results in the signal being driven low.

In contrast to rs232, the signal level for rs485 Transmit Enable is the identity, not the inversion: If the transceiver expects a "high" RTS signal for Transmit Enable, the signal coming out of the uart must also be high, so TIOCM_RTS must be *cleared* in port->mctrl.

The commit did the exact opposite, but it's easy to see why given the confusing semantics of rs232 and rs485. Fix it.

Fixes a6845e1e1b78 ("serial: core: Consider rs485 settings to drive RTS")
Cc [email protected] # v4.14+
Cc Rafael Gago Castano <[email protected]>
Cc Jan Kiszka <[email protected]>
Cc Su Bao Cheng <[email protected]>
---
 drivers/tty/serial/serial_core.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/tty/serial/serial_core.c +2 -2
@@ -172,7 +172,7 @@ static void uart_port_dtr_rts(struct uar
 	int RTS_after_send = !!(uport->rs485.flags & SER_RS485_RTS_AFTER_SEND);
 
 	if (raise) {
-		if (rs485_on && !RTS_after_send) {
+		if (rs485_on && RTS_after_send) {
 			uart_set_mctrl(uport, TIOCM_DTR);
 			uart_clear_mctrl(uport, TIOCM_RTS);
 		} else {
@@ -181,7 +181,7 @@ static void uart_port_dtr_rts(struct uar
 	} else {
 		unsigned int clear = TIOCM_DTR;
 
-		clear |= (!rs485_on || !RTS_after_send) ? TIOCM_RTS : 0;
+		clear |= (!rs485_on || RTS_after_send) ? TIOCM_RTS : 0;
 		uart_clear_mctrl(uport, clear);
 	}
 }
author maintainer
#150 lore raw

PATCH 150/186 cputime, cpuacct: Include guest time in user time in cpuacct.stat

In reply to Greg Kroah-Hartman

From: Andrey Ryabinin <[email protected]>

commit 9731698ecb9c851f353ce2496292ff9fcea39dff upstream.

cpuacct.stat in no-root cgroups shows user time without guest time included int it. This doesn't match with user time shown in root cpuacct.stat and /proc/<pid>/stat. This also affects cgroup2's cpu.stat in the same way.

Make account_guest_time() to add user time to cgroup's cpustat to fix this.

---
 kernel/sched/cputime.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
kernel/sched/cputime.c +2 -2
@@ -150,10 +150,10 @@ void account_guest_time(struct task_stru
 
 	/* Add guest time to cpustat. */
 	if (task_nice(p) > 0) {
-		cpustat[CPUTIME_NICE] += cputime;
+		task_group_account_field(p, CPUTIME_NICE, cputime);
 		cpustat[CPUTIME_GUEST_NICE] += cputime;
 	} else {
-		cpustat[CPUTIME_USER] += cputime;
+		task_group_account_field(p, CPUTIME_USER, cputime);
 		cpustat[CPUTIME_GUEST] += cputime;
 	}
 }
author maintainer
#151 lore raw

PATCH 151/186 iwlwifi: mvm: Increase the scan timeout guard to 30 seconds

In reply to Greg Kroah-Hartman

From: Ilan Peer <[email protected]>

commit ced50f1133af12f7521bb777fcf4046ca908fb77 upstream.

With the introduction of 6GHz channels the scan guard timeout should be adjusted to account for the following extreme case:

- All 6GHz channels are scanned passively: 58 channels.
- The scan is fragmented with the following parameters: 3 fragments, 95 TUs suspend time, 44 TUs maximal out of channel time.

The above would result with scan time of more than 24 seconds. Thus, set the timeout to 30 seconds.

---
 drivers/net/wireless/intel/iwlwifi/mvm/scan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/net/wireless/intel/iwlwifi/mvm/scan.c +1 -1
@@ -1364,7 +1364,7 @@ static int iwl_mvm_check_running_scans(s
 	return -EIO;
 }
 
-#define SCAN_TIMEOUT 20000
+#define SCAN_TIMEOUT 30000
 
 void iwl_mvm_scan_timeout_wk(struct work_struct *work)
 {
author maintainer
#152 lore raw

PATCH 152/186 drm/etnaviv: limit submit sizes

In reply to Greg Kroah-Hartman

From: Lucas Stach <[email protected]>

commit 6dfa2fab8ddd46faa771a102672176bee7a065de upstream.

Currently we allow rediculous amounts of kernel memory being allocated via the etnaviv GEM_SUBMIT ioctl, which is a pretty easy DoS vector. Put some reasonable limits in to fix this.

The commandstream size is limited to 64KB, which was already a soft limit on older kernels after which the kernel only took submits on a best effort base, so there is no userspace that tries to submit commandstreams larger than this. Even if the whole commandstream is a single incrementing address load, the size limit also limits the number of potential relocs and referenced buffers to slightly under 64K, so use the same limit for those arguments. The performance monitoring infrastructure currently supports less than 50 performance counter signals, so limiting them to 128 on a single submit seems like a reasonably future-proof number for now. This number can be bumped if needed without breaking the interface.

---
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c |    6 ++++++
 1 file changed, 6 insertions(+)
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c +6 -0
@@ -341,6 +341,12 @@ int etnaviv_ioctl_gem_submit(struct drm_
 		return -EINVAL;
 	}
 
+	if (args->stream_size > SZ_64K || args->nr_relocs > SZ_64K ||
+	    args->nr_bos > SZ_64K || args->nr_pmrs > 128) {
+		DRM_ERROR("submit arguments out of size limits\n");
+		return -EINVAL;
+	}
+
 	/*
 	 * Copy the command submission and bo array to kernel space in
 	 * one go, and do this outside of any locks.
author maintainer
#153 lore raw

PATCH 153/186 ext4: make sure quota gets properly shutdown on error

In reply to Greg Kroah-Hartman

From: Jan Kara <[email protected]>

commit 15fc69bbbbbc8c72e5f6cc4e1be0f51283c5448e upstream.

When we hit an error when enabling quotas and setting inode flags, we do not properly shutdown quota subsystem despite returning error from Q_QUOTAON quotactl. This can lead to some odd situations like kernel using quota file while it is still writeable for userspace. Make sure we properly cleanup the quota subsystem in case of error.

---
 fs/ext4/super.c |   10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)
fs/ext4/super.c +6 -4
@@ -5678,10 +5678,7 @@ static int ext4_quota_on(struct super_bl
 
 	lockdep_set_quota_inode(path->dentry->d_inode, I_DATA_SEM_QUOTA);
 	err = dquot_quota_on(sb, type, format_id, path);
-	if (err) {
-		lockdep_set_quota_inode(path->dentry->d_inode,
-					     I_DATA_SEM_NORMAL);
-	} else {
+	if (!err) {
 		struct inode *inode = d_inode(path->dentry);
 		handle_t *handle;
 
@@ -5701,7 +5698,12 @@ static int ext4_quota_on(struct super_bl
 		ext4_journal_stop(handle);
 	unlock_inode:
 		inode_unlock(inode);
+		if (err)
+			dquot_quota_off(sb, type);
 	}
+	if (err)
+		lockdep_set_quota_inode(path->dentry->d_inode,
+					     I_DATA_SEM_NORMAL);
 	return err;
 }
 
author maintainer
#154 lore raw

PATCH 154/186 ext4: set csum seed in tmp inode while migrating to extents

In reply to Greg Kroah-Hartman

From: Luís Henriques <[email protected]>

commit e81c9302a6c3c008f5c30beb73b38adb0170ff2d upstream.

When migrating to extents, the temporary inode will have it's own checksum seed. This means that, when swapping the inodes data, the inode checksums will be incorrect.

This can be fixed by recalculating the extents checksums again. Or simply by copying the seed into the temporary inode.

---
 fs/ext4/migrate.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
fs/ext4/migrate.c +11 -1
@@ -484,6 +484,17 @@ int ext4_ext_migrate(struct inode *inode
 		ext4_journal_stop(handle);
 		goto out_unlock;
 	}
+	/*
+	 * Use the correct seed for checksum (i.e. the seed from 'inode').  This
+	 * is so that the metadata blocks will have the correct checksum after
+	 * the migration.
+	 *
+	 * Note however that, if a crash occurs during the migration process,
+	 * the recovery process is broken because the tmp_inode checksums will
+	 * be wrong and the orphans cleanup will fail.
+	 */
+	ei = EXT4_I(inode);
+	EXT4_I(tmp_inode)->i_csum_seed = ei->i_csum_seed;
 	i_size_write(tmp_inode, i_size_read(inode));
 	/*
 	 * Set the i_nlink to zero so it will be deleted later
@@ -527,7 +538,6 @@ int ext4_ext_migrate(struct inode *inode
 		goto out_tmp_inode;
 	}
 
-	ei = EXT4_I(inode);
 	i_data = ei->i_data;
 	memset(&lb, 0, sizeof(lb));
 
author maintainer
#155 lore raw

PATCH 155/186 ext4: Fix BUG_ON in ext4_bread when write quota data

In reply to Greg Kroah-Hartman

From: Ye Bin <[email protected]>

commit 380a0091cab482489e9b19e07f2a166ad2b76d5c upstream.

We got issue as follows when run syzkaller:

[  167.936972] EXT4-fs error (device loop0): __ext4_remount:6314: comm rep: Abort forced by user
[  167.938306] EXT4-fs (loop0): Remounting filesystem read-only
[  167.981637] Assertion failure in ext4_getblk() at fs/ext4/inode.c:847: '(EXT4_SB(inode->i_sb)->s_mount_state & EXT4_FC_REPLAY) || handle != NULL || create == 0'
[  167.983601] ------------[ cut here ]------------
[  167.984245] kernel BUG at fs/ext4/inode.c:847!
[  167.984882] invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
[  167.985624] CPU: 7 PID: 2290 Comm: rep Tainted: G    B             5.16.0-rc5-next-20211217+ #123
[  167.986823] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 04/01/2014
[  167.988590] RIP: 0010:ext4_getblk+0x17e/0x504
[  167.989189] Code: c6 01 74 28 49 c7 c0 a0 a3 5c 9b b9 4f 03 00 00 48 c7 c2 80 9c 5c 9b 48 c7 c6 40 b6 5c 9b 48 c7 c7 20 a4 5c 9b e8 77 e3 fd ff <0f> 0b 8b 04 244
[  167.991679] RSP: 0018:ffff8881736f7398 EFLAGS: 00010282
[  167.992385] RAX: 0000000000000094 RBX: 1ffff1102e6dee75 RCX: 0000000000000000
[  167.993337] RDX: 0000000000000001 RSI: ffffffff9b6e29e0 RDI: ffffed102e6dee66
[  167.994292] RBP: ffff88816a076210 R08: 0000000000000094 R09: ffffed107363fa09
[  167.995252] R10: ffff88839b1fd047 R11: ffffed107363fa08 R12: ffff88816a0761e8
[  167.996205] R13: 0000000000000000 R14: 0000000000000021 R15: 0000000000000001
[  167.997158] FS:  00007f6a1428c740(0000) GS:ffff88839b000000(0000) knlGS:0000000000000000
[  167.998238] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  167.999025] CR2: 00007f6a140716c8 CR3: 0000000133216000 CR4: 00000000000006e0
[  167.999987] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  168.000944] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  168.001899] Call Trace:
[  168.002235]  <TASK>
[  168.007167]  ext4_bread+0xd/0x53
[  168.007612]  ext4_quota_write+0x20c/0x5c0
[  168.010457]  write_blk+0x100/0x220
[  168.010944]  remove_free_dqentry+0x1c6/0x440
[  168.011525]  free_dqentry.isra.0+0x565/0x830
[  168.012133]  remove_tree+0x318/0x6d0
[  168.014744]  remove_tree+0x1eb/0x6d0
[  168.017346]  remove_tree+0x1eb/0x6d0
[  168.019969]  remove_tree+0x1eb/0x6d0
[  168.022128]  qtree_release_dquot+0x291/0x340
[  168.023297]  v2_release_dquot+0xce/0x120
[  168.023847]  dquot_release+0x197/0x3e0
[  168.024358]  ext4_release_dquot+0x22a/0x2d0
[  168.024932]  dqput.part.0+0x1c9/0x900
[  168.025430]  __dquot_drop+0x120/0x190
[  168.025942]  ext4_clear_inode+0x86/0x220
[  168.026472]  ext4_evict_inode+0x9e8/0xa22
[  168.028200]  evict+0x29e/0x4f0
[  168.028625]  dispose_list+0x102/0x1f0
[  168.029148]  evict_inodes+0x2c1/0x3e0
[  168.030188]  generic_shutdown_super+0xa4/0x3b0
[  168.030817]  kill_block_super+0x95/0xd0
[  168.031360]  deactivate_locked_super+0x85/0xd0
[  168.031977]  cleanup_mnt+0x2bc/0x480
[  168.033062]  task_work_run+0xd1/0x170
[  168.033565]  do_exit+0xa4f/0x2b50
[  168.037155]  do_group_exit+0xef/0x2d0
[  168.037666]  __x64_sys_exit_group+0x3a/0x50
[  168.038237]  do_syscall_64+0x3b/0x90
[  168.038751]  entry_SYSCALL_64_after_hwframe+0x44/0xae

In order to reproduce this problem, the following conditions need to be met:
1. Ext4 filesystem with no journal;
2. Filesystem image with incorrect quota data;
3. Abort filesystem forced by user;
4. umount filesystem;

As in ext4_quota_write:
...

         if (EXT4_SB(sb)->s_journal && !handle) {
                 ext4_msg(sb, KERN_WARNING, "Quota write (off=%llu, len=%llu)"
                         " cancelled because transaction is not started",
                         (unsigned long long)off, (unsigned long long)len);
                 return -EIO;
         }

...
We only check handle if NULL when filesystem has journal. There is need check handle if NULL even when filesystem has no journal.

---
 fs/ext4/super.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
fs/ext4/super.c +1 -1
@@ -5869,7 +5869,7 @@ static ssize_t ext4_quota_write(struct s
 	struct buffer_head *bh;
 	handle_t *handle = journal_current_handle();
 
-	if (EXT4_SB(sb)->s_journal && !handle) {
+	if (!handle) {
 		ext4_msg(sb, KERN_WARNING, "Quota write (off=%llu, len=%llu)"
 			" cancelled because transaction is not started",
 			(unsigned long long)off, (unsigned long long)len);
author maintainer
#156 lore raw

PATCH 156/186 ext4: dont use the orphan list when migrating an inode

In reply to Greg Kroah-Hartman

From: Theodore Ts'o <[email protected]>

commit 6eeaf88fd586f05aaf1d48cb3a139d2a5c6eb055 upstream.

We probably want to remove the indirect block to extents migration feature after a deprecation window, but until then, let's fix a potential data loss problem caused by the fact that we put the tmp_inode on the orphan list. In the unlikely case where we crash and do a journal recovery, the data blocks belonging to the inode being migrated are also represented in the tmp_inode on the orphan list --- and so its data blocks will get marked unallocated, and available for reuse.

Instead, stop putting the tmp_inode on the oprhan list. So in the case where we crash while migrating the inode, we'll leak an inode, which is not a disaster. It will be easily fixed the next time we run fsck, and it's better than potentially having blocks getting claimed by two different files, and losing data as a result.

---
 fs/ext4/migrate.c |   19 ++++---------------
 1 file changed, 4 insertions(+), 15 deletions(-)
fs/ext4/migrate.c +4 -15
@@ -462,12 +462,12 @@ int ext4_ext_migrate(struct inode *inode
 	percpu_down_write(&sbi->s_writepages_rwsem);
 
 	/*
-	 * Worst case we can touch the allocation bitmaps, a bgd
-	 * block, and a block to link in the orphan list.  We do need
-	 * need to worry about credits for modifying the quota inode.
+	 * Worst case we can touch the allocation bitmaps and a block
+	 * group descriptor block.  We do need need to worry about
+	 * credits for modifying the quota inode.
 	 */
 	handle = ext4_journal_start(inode, EXT4_HT_MIGRATE,
-		4 + EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb));
+		3 + EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb));
 
 	if (IS_ERR(handle)) {
 		retval = PTR_ERR(handle);
@@ -488,10 +488,6 @@ int ext4_ext_migrate(struct inode *inode
 	 * Use the correct seed for checksum (i.e. the seed from 'inode').  This
 	 * is so that the metadata blocks will have the correct checksum after
 	 * the migration.
-	 *
-	 * Note however that, if a crash occurs during the migration process,
-	 * the recovery process is broken because the tmp_inode checksums will
-	 * be wrong and the orphans cleanup will fail.
 	 */
 	ei = EXT4_I(inode);
 	EXT4_I(tmp_inode)->i_csum_seed = ei->i_csum_seed;
@@ -503,7 +499,6 @@ int ext4_ext_migrate(struct inode *inode
 	clear_nlink(tmp_inode);
 
 	ext4_ext_tree_init(handle, tmp_inode);
-	ext4_orphan_add(handle, tmp_inode);
 	ext4_journal_stop(handle);
 
 	/*
@@ -528,12 +523,6 @@ int ext4_ext_migrate(struct inode *inode
 
 	handle = ext4_journal_start(inode, EXT4_HT_MIGRATE, 1);
 	if (IS_ERR(handle)) {
-		/*
-		 * It is impossible to update on-disk structures without
-		 * a handle, so just rollback in-core changes and live other
-		 * work to orphan_list_cleanup()
-		 */
-		ext4_orphan_del(NULL, tmp_inode);
 		retval = PTR_ERR(handle);
 		goto out_tmp_inode;
 	}
author maintainer
#157 lore raw

PATCH 157/186 crypto: stm32/crc32 - Fix kernel BUG triggered in probe()

In reply to Greg Kroah-Hartman

From: Marek Vasut <[email protected]>

commit 29009604ad4e3ef784fd9b9fef6f23610ddf633d upstream.

The include/linux/crypto.h struct crypto_alg field cra_driver_name description states "Unique name of the transformation provider. " ... " this contains the name of the chip or provider and the name of the transformation algorithm."

In case of the stm32-crc driver, field cra_driver_name is identical for all registered transformation providers and set to the name of the driver itself, which is incorrect. This patch fixes it by assigning a unique cra_driver_name to each registered transformation provider.

The kernel crash is triggered when the driver calls crypto_register_shashes() which calls crypto_register_shash(), which calls crypto_register_alg(), which calls __crypto_register_alg(), which returns -EEXIST, which is propagated back through this call chain. Upon -EEXIST from crypto_register_shash(), the crypto_register_shashes() starts unregistering the providers back, and calls crypto_unregister_shash(), which calls crypto_unregister_alg(), and this is where the BUG() triggers due to incorrect cra_refcnt.

Fixes b51dbe90912a ("crypto: stm32 - Support for STM32 CRC32 crypto module")
Cc <[email protected]> # 4.12+
Cc Alexandre Torgue <[email protected]>
Cc Fabien Dessenne <[email protected]>
Cc Herbert Xu <[email protected]>
Cc Lionel Debieve <[email protected]>
Cc Nicolas Toromanoff <[email protected]>

To: [email protected]

---
 drivers/crypto/stm32/stm32_crc32.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/crypto/stm32/stm32_crc32.c +2 -2
@@ -206,7 +206,7 @@ static struct shash_alg algs[] = {
 		.digestsize     = CHKSUM_DIGEST_SIZE,
 		.base           = {
 			.cra_name               = "crc32",
-			.cra_driver_name        = DRIVER_NAME,
+			.cra_driver_name        = "stm32-crc32-crc32",
 			.cra_priority           = 200,
 			.cra_flags		= CRYPTO_ALG_OPTIONAL_KEY,
 			.cra_blocksize          = CHKSUM_BLOCK_SIZE,
@@ -228,7 +228,7 @@ static struct shash_alg algs[] = {
 		.digestsize     = CHKSUM_DIGEST_SIZE,
 		.base           = {
 			.cra_name               = "crc32c",
-			.cra_driver_name        = DRIVER_NAME,
+			.cra_driver_name        = "stm32-crc32-crc32c",
 			.cra_priority           = 200,
 			.cra_flags		= CRYPTO_ALG_OPTIONAL_KEY,
 			.cra_blocksize          = CHKSUM_BLOCK_SIZE,

_______________________________________________
linux-arm-kernel mailing list
[email protected]
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

author maintainer
#158 lore raw

PATCH 158/186 drm/radeon: fix error handling in radeon_driver_open_kms

In reply to Greg Kroah-Hartman

From: Christian König <[email protected]>

commit 4722f463896cc0ef1a6f1c3cb2e171e949831249 upstream.

The return value was never initialized so the cleanup code executed when it isn't even necessary.

Just add proper error handling.

Fixes ab50cb9df889 ("drm/radeon/radeon_kms: Fix a NULL pointer dereference in radeon_driver_open_kms()")
---
 drivers/gpu/drm/radeon/radeon_kms.c |   22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)
drivers/gpu/drm/radeon/radeon_kms.c +12 -10
@@ -673,18 +673,18 @@ int radeon_driver_open_kms(struct drm_de
 		fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
 		if (unlikely(!fpriv)) {
 			r = -ENOMEM;
-			goto out_suspend;
+			goto err_suspend;
 		}
 
 		if (rdev->accel_working) {
 			vm = &fpriv->vm;
 			r = radeon_vm_init(rdev, vm);
 			if (r)
-				goto out_fpriv;
+				goto err_fpriv;
 
 			r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 			if (r)
-				goto out_vm_fini;
+				goto err_vm_fini;
 
 			/* map the ib pool buffer read only into
 			 * virtual address space */
@@ -692,7 +692,7 @@ int radeon_driver_open_kms(struct drm_de
 							rdev->ring_tmp_bo.bo);
 			if (!vm->ib_bo_va) {
 				r = -ENOMEM;
-				goto out_vm_fini;
+				goto err_vm_fini;
 			}
 
 			r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
@@ -700,19 +700,21 @@ int radeon_driver_open_kms(struct drm_de
 						  RADEON_VM_PAGE_READABLE |
 						  RADEON_VM_PAGE_SNOOPED);
 			if (r)
-				goto out_vm_fini;
+				goto err_vm_fini;
 		}
 		file_priv->driver_priv = fpriv;
 	}
 
-	if (!r)
-		goto out_suspend;
+	pm_runtime_mark_last_busy(dev->dev);
+	pm_runtime_put_autosuspend(dev->dev);
+	return 0;
 
-out_vm_fini:
+err_vm_fini:
 	radeon_vm_fini(rdev, vm);
-out_fpriv:
+err_fpriv:
 	kfree(fpriv);
-out_suspend:
+
+err_suspend:
 	pm_runtime_mark_last_busy(dev->dev);
 	pm_runtime_put_autosuspend(dev->dev);
 	return r;
author maintainer
#159 lore raw

PATCH 159/186 firmware: Update Kconfig help text for Google firmware

In reply to Greg Kroah-Hartman

From: Ben Hutchings <[email protected]>

commit d185a3466f0cd5af8f1c5c782c53bc0e6f2e7136 upstream.

The help text for GOOGLE_FIRMWARE states that it should only be enabled when building a kernel for Google's own servers. However, many of the drivers dependent on it are also useful on Chromebooks or on any platform using coreboot.

Update the help text to reflect this double duty.

Fixes d384d6f43d1e ("firmware: google memconsole: Add coreboot support")
---
 drivers/firmware/google/Kconfig |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
drivers/firmware/google/Kconfig +3 -3
@@ -2,9 +2,9 @@ menuconfig GOOGLE_FIRMWARE
 	bool "Google Firmware Drivers"
 	default n
 	help
-	  These firmware drivers are used by Google's servers.  They are
-	  only useful if you are working directly on one of their
-	  proprietary servers.  If in doubt, say "N".
+	  These firmware drivers are used by Google servers,
+	  Chromebooks and other devices using coreboot firmware.
+	  If in doubt, say "N".
 
 if GOOGLE_FIRMWARE
 
author maintainer
#160 lore raw

PATCH 160/186 Documentation: refer to config RANDOMIZE_BASE for kernel address-space randomization

In reply to Greg Kroah-Hartman

From: Lukas Bulwahn <[email protected]>

commit 82ca67321f55a8d1da6ac3ed611da3c32818bb37 upstream.

The config RANDOMIZE_SLAB does not exist, the authors probably intended to refer to the config RANDOMIZE_BASE, which provides kernel address-space randomization. They probably just confused SLAB with BASE (these two four-letter words coincidentally share three common letters), as they also point out the config SLAB_FREELIST_RANDOM as further randomization within the same sentence.

Fix the reference of the config for kernel address-space randomization to the config that provides that.

Fixes 6e88559470f5 ("Documentation: Add section about CPU vulnerabilities for Spectre")
---
 Documentation/admin-guide/hw-vuln/spectre.rst |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
Documentation/admin-guide/hw-vuln/spectre.rst +1 -1
@@ -468,7 +468,7 @@ Spectre variant 2
    before invoking any firmware code to prevent Spectre variant 2 exploits
    using the firmware.
 
-   Using kernel address space randomization (CONFIG_RANDOMIZE_SLAB=y
+   Using kernel address space randomization (CONFIG_RANDOMIZE_BASE=y
    and CONFIG_SLAB_FREELIST_RANDOM=y in the kernel configuration) makes
    attacks on the kernel generally more difficult.
 
author maintainer
#161 lore raw

PATCH 161/186 RDMA/hns: Modify the mapping attribute of doorbell to device

In reply to Greg Kroah-Hartman

From: Yixing Liu <[email protected]>

commit 39d5534b1302189c809e90641ffae8cbdc42a8fc upstream.

It is more general for ARM device drivers to use the device attribute to map PCI BAR spaces.

Fixes 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver")
---
 drivers/infiniband/hw/hns/hns_roce_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/infiniband/hw/hns/hns_roce_main.c +1 -1
@@ -377,7 +377,7 @@ static int hns_roce_mmap(struct ib_ucont
 		return -EINVAL;
 
 	if (vma->vm_pgoff == 0) {
-		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+		vma->vm_page_prot = pgprot_device(vma->vm_page_prot);
 		if (io_remap_pfn_range(vma, vma->vm_start,
 				       to_hr_ucontext(context)->uar.pfn,
 				       PAGE_SIZE, vma->vm_page_prot))
author maintainer
#162 lore raw

PATCH 162/186 RDMA/rxe: Fix a typo in opcode name

In reply to Greg Kroah-Hartman

From: Chengguang Xu <[email protected]>

commit 8d1cfb884e881efd69a3be4ef10772c71cb22216 upstream.

There is a redundant ']' in the name of opcode IB_OPCODE_RC_SEND_MIDDLE, so just fix it.

---
 drivers/infiniband/sw/rxe/rxe_opcode.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/infiniband/sw/rxe/rxe_opcode.c +1 -1
@@ -137,7 +137,7 @@ struct rxe_opcode_info rxe_opcode[RXE_NU
 		}
 	},
 	[IB_OPCODE_RC_SEND_MIDDLE]		= {
-		.name	= "IB_OPCODE_RC_SEND_MIDDLE]",
+		.name	= "IB_OPCODE_RC_SEND_MIDDLE",
 		.mask	= RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_SEND_MASK
 				| RXE_MIDDLE_MASK,
 		.length = RXE_BTH_BYTES,
author maintainer
#163 lore raw

PATCH 163/186 powerpc/cell: Fix clang -Wimplicit-fallthrough warning

In reply to Greg Kroah-Hartman

From: Anders Roxell <[email protected]>

commit e89257e28e844f5d1d39081bb901d9f1183a7705 upstream.

Clang warns:

arch/powerpc/platforms/cell/pervasive.c:81:2: error: unannotated fall-through between switch labels

        case SRR1_WAKEEE:
        ^
arch/powerpc/platforms/cell/pervasive.c:81:2: note: insert 'break;' to avoid fall-through
        case SRR1_WAKEEE:
        ^
        break;

1 error generated.

Clang is more pedantic than GCC, which does not warn when failing through to a case that is just break or return. Clang's version is more in line with the kernel's own stance in deprecated.rst. Add athe missing break to silence the warning.

Fixes 6e83985b0f6e ("powerpc/cbe: Do not process external or decremeter interrupts from sreset")
---
 arch/powerpc/platforms/cell/pervasive.c |    1 +
 1 file changed, 1 insertion(+)
arch/powerpc/platforms/cell/pervasive.c +1 -0
@@ -90,6 +90,7 @@ static int cbe_system_reset_exception(st
 	switch (regs->msr & SRR1_WAKEMASK) {
 	case SRR1_WAKEDEC:
 		set_dec(1);
+		break;
 	case SRR1_WAKEEE:
 		/*
 		 * Handle these when interrupts get re-enabled and we take
author maintainer
#164 lore raw

PATCH 164/186 powerpc/fsl/dts: Enable WA for erratum A-009885 on fman3l MDIO buses

In reply to Greg Kroah-Hartman

From: Tobias Waldekranz <[email protected]>

commit 0d375d610fa96524e2ee2b46830a46a7bfa92a9f upstream.

This block is used in (at least) T1024 and T1040, including their variants like T1023 etc.

Fixes d55ad2967d89 ("powerpc/mpc85xx: Create dts components for the FSL QorIQ DPAA FMan")
---
 arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi |    2 ++
 1 file changed, 2 insertions(+)
arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi +2 -0
@@ -78,6 +78,7 @@ fman0: fman@400000 {
 		#size-cells = <0>;
 		compatible = "fsl,fman-memac-mdio", "fsl,fman-xmdio";
 		reg = <0xfc000 0x1000>;
+		fsl,erratum-a009885;
 	};
 
 	xmdio0: mdio@fd000 {
@@ -85,6 +86,7 @@ fman0: fman@400000 {
 		#size-cells = <0>;
 		compatible = "fsl,fman-memac-mdio", "fsl,fman-xmdio";
 		reg = <0xfd000 0x1000>;
+		fsl,erratum-a009885;
 	};
 
 	ptp_timer0: ptp-timer@fe000 {
author maintainer
#165 lore raw

PATCH 165/186 net/fsl: xgmac_mdio: Fix incorrect iounmap when removing module

In reply to Greg Kroah-Hartman

From: Tobias Waldekranz <[email protected]>

commit 3f7c239c7844d2044ed399399d97a5f1c6008e1b upstream.

As reported by sparse: In the remove path, the driver would attempt to unmap its own priv pointer - instead of the io memory that it mapped in probe.

Fixes 9f35a7342cff ("net/fsl: introduce Freescale 10G MDIO driver")
---
 drivers/net/ethernet/freescale/xgmac_mdio.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/net/ethernet/freescale/xgmac_mdio.c +2 -1
@@ -301,9 +301,10 @@ err_ioremap:
 static int xgmac_mdio_remove(struct platform_device *pdev)
 {
 	struct mii_bus *bus = platform_get_drvdata(pdev);
+	struct mdio_fsl_priv *priv = bus->priv;
 
 	mdiobus_unregister(bus);
-	iounmap(bus->priv);
+	iounmap(priv->mdio_base);
 	mdiobus_free(bus);
 
 	return 0;
author maintainer
#166 lore raw

PATCH 166/186 parisc: pdc_stable: Fix memory leak in pdcs_register_pathentries

In reply to Greg Kroah-Hartman

From: Miaoqian Lin <[email protected]>

commit d24846a4246b6e61ecbd036880a4adf61681d241 upstream.

kobject_init_and_add() takes reference even when it fails. According to the doc of kobject_init_and_add():

If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object.

Fix memory leak by calling kobject_put().

Fixes 73f368cf679b ("Kobject: change drivers/parisc/pdc_stable.c to use kobject_init_and_add")
---
 drivers/parisc/pdc_stable.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
drivers/parisc/pdc_stable.c +3 -1
@@ -992,8 +992,10 @@ pdcs_register_pathentries(void)
 		entry->kobj.kset = paths_kset;
 		err = kobject_init_and_add(&entry->kobj, &ktype_pdcspath, NULL,
 					   "%s", entry->name);
-		if (err)
+		if (err) {
+			kobject_put(&entry->kobj);
 			return err;
+		}
 
 		/* kobject is now registered */
 		write_lock(&entry->rw_lock);
author maintainer
#167 lore raw

PATCH 167/186 af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress

In reply to Greg Kroah-Hartman

From: Eric Dumazet <[email protected]>

commit 9d6d7f1cb67cdee15f1a0e85aacfb924e0e02435 upstream.

wait_for_unix_gc() reads unix_tot_inflight & gc_in_progress without synchronization.

Adds READ_ONCE()/WRITE_ONCE() and their associated comments to better document the intent.

BUG: KCSAN: data-race in unix_inflight / wait_for_unix_gc

write to 0xffffffff86e2b7c0 of 4 bytes by task 9380 on cpu 0:

 unix_inflight+0x1e8/0x260 net/unix/scm.c:63
 unix_attach_fds+0x10c/0x1e0 net/unix/scm.c:121
 unix_scm_to_skb net/unix/af_unix.c:1674 [inline]
 unix_dgram_sendmsg+0x679/0x16b0 net/unix/af_unix.c:1817
 unix_seqpacket_sendmsg+0xcc/0x110 net/unix/af_unix.c:2258
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x39a/0x510 net/socket.c:2409
 ___sys_sendmsg net/socket.c:2463 [inline]
 __sys_sendmmsg+0x267/0x4c0 net/socket.c:2549
 __do_sys_sendmmsg net/socket.c:2578 [inline]
 __se_sys_sendmmsg net/socket.c:2575 [inline]
 __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2575
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffffff86e2b7c0 of 4 bytes by task 9375 on cpu 1:

 wait_for_unix_gc+0x24/0x160 net/unix/garbage.c:196
 unix_dgram_sendmsg+0x8e/0x16b0 net/unix/af_unix.c:1772
 unix_seqpacket_sendmsg+0xcc/0x110 net/unix/af_unix.c:2258
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x39a/0x510 net/socket.c:2409
 ___sys_sendmsg net/socket.c:2463 [inline]
 __sys_sendmmsg+0x267/0x4c0 net/socket.c:2549
 __do_sys_sendmmsg net/socket.c:2578 [inline]
 __se_sys_sendmmsg net/socket.c:2575 [inline]
 __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2575
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000002 -> 0x00000004

Reported by Kernel Concurrency Sanitizer on:

CPU: 1 PID: 9375 Comm: syz-executor.1 Not tainted 5.16.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
---
 net/unix/garbage.c |   14 +++++++++++---
 net/unix/scm.c     |    6 ++++--
 2 files changed, 15 insertions(+), 5 deletions(-)
net/unix/garbage.c +11 -3
@@ -197,8 +197,11 @@ void wait_for_unix_gc(void)
 {
 	/* If number of inflight sockets is insane,
 	 * force a garbage collect right now.
+	 * Paired with the WRITE_ONCE() in unix_inflight(),
+	 * unix_notinflight() and gc_in_progress().
 	 */
-	if (unix_tot_inflight > UNIX_INFLIGHT_TRIGGER_GC && !gc_in_progress)
+	if (READ_ONCE(unix_tot_inflight) > UNIX_INFLIGHT_TRIGGER_GC &&
+	    !READ_ONCE(gc_in_progress))
 		unix_gc();
 	wait_event(unix_gc_wait, gc_in_progress == false);
 }
@@ -218,7 +221,9 @@ void unix_gc(void)
 	if (gc_in_progress)
 		goto out;
 
-	gc_in_progress = true;
+	/* Paired with READ_ONCE() in wait_for_unix_gc(). */
+	WRITE_ONCE(gc_in_progress, true);
+
 	/* First, select candidates for garbage collection.  Only
 	 * in-flight sockets are considered, and from those only ones
 	 * which don't have any external reference.
@@ -304,7 +309,10 @@ void unix_gc(void)
 
 	/* All candidates should have been detached by now. */
 	BUG_ON(!list_empty(&gc_candidates));
-	gc_in_progress = false;
+
+	/* Paired with READ_ONCE() in wait_for_unix_gc(). */
+	WRITE_ONCE(gc_in_progress, false);
+
 	wake_up(&unix_gc_wait);
 
  out:
net/unix/scm.c +4 -2
@@ -57,7 +57,8 @@ void unix_inflight(struct user_struct *u
 		} else {
 			BUG_ON(list_empty(&u->link));
 		}
-		unix_tot_inflight++;
+		/* Paired with READ_ONCE() in wait_for_unix_gc() */
+		WRITE_ONCE(unix_tot_inflight, unix_tot_inflight + 1);
 	}
 	user->unix_inflight++;
 	spin_unlock(&unix_gc_lock);
@@ -77,7 +78,8 @@ void unix_notinflight(struct user_struct
 
 		if (atomic_long_dec_and_test(&u->inflight))
 			list_del_init(&u->link);
-		unix_tot_inflight--;
+		/* Paired with READ_ONCE() in wait_for_unix_gc() */
+		WRITE_ONCE(unix_tot_inflight, unix_tot_inflight - 1);
 	}
 	user->unix_inflight--;
 	spin_unlock(&unix_gc_lock);
author maintainer
#168 lore raw

PATCH 168/186 net: axienet: Wait for PhyRstCmplt after core reset

In reply to Greg Kroah-Hartman

From: Robert Hancock <[email protected]>

commit b400c2f4f4c53c86594dd57098970d97d488bfde upstream.

When resetting the device, wait for the PhyRstCmplt bit to be set in the interrupt status register before continuing initialization, to ensure that the core is actually ready. When using an external PHY, this also ensures we do not start trying to access the PHY while it is still in reset. The PHY reset is initiated by the core reset which is triggered just above, but remains asserted for 5ms after the core is reset according to the documentation.

The MgtRdy bit could also be waited for, but unfortunately when using 7-series devices, the bit does not appear to work as documented (it seems to behave as some sort of link state indication and not just an indication the transceiver is ready) so it can't really be relied on for this purpose.

Fixes 8a3b7a252dca9 ("drivers/net/ethernet/xilinx: added Xilinx AXI Ethernet driver")
---
 drivers/net/ethernet/xilinx/xilinx_axienet_main.c |   10 ++++++++++
 1 file changed, 10 insertions(+)
drivers/net/ethernet/xilinx/xilinx_axienet_main.c +10 -0
@@ -279,6 +279,16 @@ static int axienet_dma_bd_init(struct ne
 	axienet_dma_out32(lp, XAXIDMA_TX_CR_OFFSET,
 			  cr | XAXIDMA_CR_RUNSTOP_MASK);
 
+	/* Wait for PhyRstCmplt bit to be set, indicating the PHY reset has finished */
+	ret = read_poll_timeout(axienet_ior, value,
+				value & XAE_INT_PHYRSTCMPLT_MASK,
+				DELAY_OF_ONE_MILLISEC, 50000, false, lp,
+				XAE_IS_OFFSET);
+	if (ret) {
+		dev_err(lp->dev, "%s: timeout waiting for PhyRstCmplt\n", __func__);
+		return ret;
+	}
+
 	return 0;
 out:
 	axienet_dma_bd_release(ndev);
author maintainer
#169 lore raw

PATCH 169/186 net: axienet: fix number of TX ring slots for available check

In reply to Greg Kroah-Hartman

From: Robert Hancock <[email protected]>

commit aba57a823d2985a2cc8c74a2535f3a88e68d9424 upstream.

The check for the number of available TX ring slots was off by 1 since a slot is required for the skb header as well as each fragment. This could result in overwriting a TX ring slot that was still in use.

Fixes 8a3b7a252dca9 ("drivers/net/ethernet/xilinx: added Xilinx AXI Ethernet driver")
---
 drivers/net/ethernet/xilinx/xilinx_axienet_main.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/net/ethernet/xilinx/xilinx_axienet_main.c +2 -2
@@ -682,7 +682,7 @@ axienet_start_xmit(struct sk_buff *skb,
 	num_frag = skb_shinfo(skb)->nr_frags;
 	cur_p = &lp->tx_bd_v[lp->tx_bd_tail];
 
-	if (axienet_check_tx_bd_space(lp, num_frag)) {
+	if (axienet_check_tx_bd_space(lp, num_frag + 1)) {
 		if (netif_queue_stopped(ndev))
 			return NETDEV_TX_BUSY;
 
@@ -692,7 +692,7 @@ axienet_start_xmit(struct sk_buff *skb,
 		smp_mb();
 
 		/* Space might have just been freed - check again */
-		if (axienet_check_tx_bd_space(lp, num_frag))
+		if (axienet_check_tx_bd_space(lp, num_frag + 1))
 			return NETDEV_TX_BUSY;
 
 		netif_wake_queue(ndev);
author maintainer
#170 lore raw

PATCH 170/186 netns: add schedule point in ops_exit_list()

In reply to Greg Kroah-Hartman

From: Eric Dumazet <[email protected]>

commit 2836615aa22de55b8fca5e32fe1b27a67cda625e upstream.

When under stress, cleanup_net() can have to dismantle netns in big numbers. ops_exit_list() currently calls many helpers [1] that have no schedule point, and we can end up with soft lockups, particularly on hosts with many cpus.

Even for moderate amount of netns processed by cleanup_net() this patch avoids latency spikes.

[1] Some of these helpers like fib_sync_up() and fib_sync_down_dev() are very slow because net/ipv4/fib_semantics.c uses host-wide hash tables, and ifindex is used as the only input of two hash functions. ifindexes tend to be the same for all netns (lo.ifindex==1 per instance) This will be fixed in a separate patch.

Fixes 72ad937abd0a ("net: Add support for batching network namespace cleanups")
Cc Eric W. Biederman <[email protected]>
---
 net/core/net_namespace.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
net/core/net_namespace.c +3 -1
@@ -138,8 +138,10 @@ static void ops_exit_list(const struct p
 {
 	struct net *net;
 	if (ops->exit) {
-		list_for_each_entry(net, net_exit_list, exit_list)
+		list_for_each_entry(net, net_exit_list, exit_list) {
 			ops->exit(net);
+			cond_resched();
+		}
 	}
 	if (ops->exit_batch)
 		ops->exit_batch(net_exit_list);
author maintainer
#171 lore raw

PATCH 171/186 libcxgb: Dont accidentally set RTO_ONLINK in cxgb_find_route()

In reply to Greg Kroah-Hartman

From: Guillaume Nault <[email protected]>

commit a915deaa9abe4fb3a440312c954253a6a733608e upstream.

Mask the ECN bits before calling ip_route_output_ports(). The tos variable might be passed directly from an IPv4 header, so it may have the last ECN bit set. This interferes with the route lookup process as ip_route_output_key_hash() interpretes this bit specially (to restrict the route scope).

Found by code inspection, compile tested only.

Fixes 804c2f3e36ef ("libcxgb,iw_cxgb4,cxgbit: add cxgb_find_route()")
---
 drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c +2 -1
@@ -32,6 +32,7 @@
 
 #include <linux/tcp.h>
 #include <linux/ipv6.h>
+#include <net/inet_ecn.h>
 #include <net/route.h>
 #include <net/ip6_route.h>
 
@@ -99,7 +100,7 @@ cxgb_find_route(struct cxgb4_lld_info *l
 
 	rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
 				   peer_port, local_port, IPPROTO_TCP,
-				   tos, 0);
+				   tos & ~INET_ECN_MASK, 0);
 	if (IS_ERR(rt))
 		return NULL;
 	n = dst_neigh_lookup(&rt->dst, &peer_ip);
author maintainer
#172 lore raw

PATCH 172/186 dmaengine: at_xdmac: Dont start transactions at tx_submit level

In reply to Greg Kroah-Hartman

From: Tudor Ambarus <[email protected]>

commit bccfb96b59179d4f96cbbd1ddff8fac6d335eae4 upstream.

tx_submit is supposed to push the current transaction descriptor to a pending queue, waiting for issue_pending() to be called. issue_pending() must start the transfer, not tx_submit(), thus remove at_xdmac_start_xfer() from at_xdmac_tx_submit(). Clients of at_xdmac that assume that tx_submit() starts the transfer must be updated and call dma_async_issue_pending() if they miss to call it (one example is atmel_serial).

As the at_xdmac_start_xfer() is now called only from at_xdmac_advance_work() when !at_xdmac_chan_is_enabled(), the at_xdmac_chan_is_enabled() check is no longer needed in at_xdmac_start_xfer(), thus remove it.

Fixes e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver")
---
 drivers/dma/at_xdmac.c |    6 ------
 1 file changed, 6 deletions(-)
drivers/dma/at_xdmac.c +0 -6
@@ -344,9 +344,6 @@ static void at_xdmac_start_xfer(struct a
 
 	dev_vdbg(chan2dev(&atchan->chan), "%s: desc 0x%p\n", __func__, first);
 
-	if (at_xdmac_chan_is_enabled(atchan))
-		return;
-
 	/* Set transfer as active to not try to start it again. */
 	first->active_xfer = true;
 
@@ -430,9 +427,6 @@ static dma_cookie_t at_xdmac_tx_submit(s
 	dev_vdbg(chan2dev(tx->chan), "%s: atchan 0x%p, add desc 0x%p to xfers_list\n",
 		 __func__, atchan, desc);
 	list_add_tail(&desc->xfer_node, &atchan->xfers_list);
-	if (list_is_singular(&atchan->xfers_list))
-		at_xdmac_start_xfer(atchan, desc);
-
 	spin_unlock_irqrestore(&atchan->lock, irqflags);
 	return cookie;
 }
author maintainer
#173 lore raw

PATCH 173/186 dmaengine: at_xdmac: Print debug message after realeasing the lock

In reply to Greg Kroah-Hartman

From: Tudor Ambarus <[email protected]>

commit 5edc24ac876a928f36f407a0fcdb33b94a3a210f upstream.

It is desirable to do the prints without the lock held if possible, so move the print after the lock is released.

Fixes e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver")
---
 drivers/dma/at_xdmac.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
drivers/dma/at_xdmac.c +4 -2
@@ -424,10 +424,12 @@ static dma_cookie_t at_xdmac_tx_submit(s
 	spin_lock_irqsave(&atchan->lock, irqflags);
 	cookie = dma_cookie_assign(tx);
 
-	dev_vdbg(chan2dev(tx->chan), "%s: atchan 0x%p, add desc 0x%p to xfers_list\n",
-		 __func__, atchan, desc);
 	list_add_tail(&desc->xfer_node, &atchan->xfers_list);
 	spin_unlock_irqrestore(&atchan->lock, irqflags);
+
+	dev_vdbg(chan2dev(tx->chan), "%s: atchan 0x%p, add desc 0x%p to xfers_list\n",
+		 __func__, atchan, desc);
+
 	return cookie;
 }
 
author maintainer
#174 lore raw

PATCH 174/186 dmaengine: at_xdmac: Fix lld view setting

In reply to Greg Kroah-Hartman

From: Tudor Ambarus <[email protected]>

commit 1385eb4d14d447cc5d744bc2ac34f43be66c9963 upstream.

AT_XDMAC_CNDC_NDVIEW_NDV3 was set even for AT_XDMAC_MBR_UBC_NDV2, because of the wrong bit handling. Fix it.

Fixes ee0fe35c8dcd ("dmaengine: xdmac: Handle descriptor's view 3 registers")
---
 drivers/dma/at_xdmac.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
drivers/dma/at_xdmac.c +3 -1
@@ -100,6 +100,7 @@
 #define		AT_XDMAC_CNDC_NDE		(0x1 << 0)		/* Channel x Next Descriptor Enable */
 #define		AT_XDMAC_CNDC_NDSUP		(0x1 << 1)		/* Channel x Next Descriptor Source Update */
 #define		AT_XDMAC_CNDC_NDDUP		(0x1 << 2)		/* Channel x Next Descriptor Destination Update */
+#define		AT_XDMAC_CNDC_NDVIEW_MASK	GENMASK(28, 27)
 #define		AT_XDMAC_CNDC_NDVIEW_NDV0	(0x0 << 3)		/* Channel x Next Descriptor View 0 */
 #define		AT_XDMAC_CNDC_NDVIEW_NDV1	(0x1 << 3)		/* Channel x Next Descriptor View 1 */
 #define		AT_XDMAC_CNDC_NDVIEW_NDV2	(0x2 << 3)		/* Channel x Next Descriptor View 2 */
@@ -359,7 +360,8 @@ static void at_xdmac_start_xfer(struct a
 	 */
 	if (at_xdmac_chan_is_cyclic(atchan))
 		reg = AT_XDMAC_CNDC_NDVIEW_NDV1;
-	else if (first->lld.mbr_ubc & AT_XDMAC_MBR_UBC_NDV3)
+	else if ((first->lld.mbr_ubc &
+		  AT_XDMAC_CNDC_NDVIEW_MASK) == AT_XDMAC_MBR_UBC_NDV3)
 		reg = AT_XDMAC_CNDC_NDVIEW_NDV3;
 	else
 		reg = AT_XDMAC_CNDC_NDVIEW_NDV2;
author maintainer
#175 lore raw

PATCH 175/186 dmaengine: at_xdmac: Fix at_xdmac_lld struct definition

In reply to Greg Kroah-Hartman

From: Tudor Ambarus <[email protected]>

commit 912f7c6f7fac273f40e621447cf17d14b50d6e5b upstream.

The hardware channel next descriptor view structure contains just fields of 32 bits, while dma_addr_t can be of type u64 or u32 depending on CONFIG_ARCH_DMA_ADDR_T_64BIT. Force u32 to comply with what the hardware expects.

Fixes e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver")
---
 drivers/dma/at_xdmac.c |   18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)
drivers/dma/at_xdmac.c +9 -9
@@ -232,15 +232,15 @@ struct at_xdmac {
 
 /* Linked List Descriptor */
 struct at_xdmac_lld {
-	dma_addr_t	mbr_nda;	/* Next Descriptor Member */
-	u32		mbr_ubc;	/* Microblock Control Member */
-	dma_addr_t	mbr_sa;		/* Source Address Member */
-	dma_addr_t	mbr_da;		/* Destination Address Member */
-	u32		mbr_cfg;	/* Configuration Register */
-	u32		mbr_bc;		/* Block Control Register */
-	u32		mbr_ds;		/* Data Stride Register */
-	u32		mbr_sus;	/* Source Microblock Stride Register */
-	u32		mbr_dus;	/* Destination Microblock Stride Register */
+	u32 mbr_nda;	/* Next Descriptor Member */
+	u32 mbr_ubc;	/* Microblock Control Member */
+	u32 mbr_sa;	/* Source Address Member */
+	u32 mbr_da;	/* Destination Address Member */
+	u32 mbr_cfg;	/* Configuration Register */
+	u32 mbr_bc;	/* Block Control Register */
+	u32 mbr_ds;	/* Data Stride Register */
+	u32 mbr_sus;	/* Source Microblock Stride Register */
+	u32 mbr_dus;	/* Destination Microblock Stride Register */
 };
 
 /* 64-bit alignment needed to update CNDA and CUBC registers in an atomic way. */