4.19.81-stable review

This is the start of the stable review cycle for the 4.19.81 release. There are 93 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 Tue 29 Oct 2019 08:27:02 PM UTC. 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-4.19.81-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-4.19.y
and the diffstat can be found below.

thanks,

greg k-h

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

Greg Kroah-Hartman <[email protected]>

    Linux 4.19.81-rc1

Greg KH <[email protected]>
RDMA/cxgb4: Do not dma memory off of the stack

Tejun Heo <[email protected]>
blk-rq-qos: fix first node deletion of rq_qos_del()

Rafael J. Wysocki <[email protected]>
PCI: PM: Fix pci_power_up()

Juergen Gross <[email protected]>
xen/netback: fix error path of xenvif_connect_data()

Rafael J. Wysocki <[email protected]>
cpufreq: Avoid cpufreq_suspend() deadlock on system shutdown

Christophe JAILLET <[email protected]>
memstick: jmb38x_ms: Fix an error handling path in 'jmb38x_ms_probe()'

Qu Wenruo <[email protected]>
btrfs: tracepoints: Fix bad entry members of qgroup events

Filipe Manana <[email protected]>
Btrfs: check for the full sync flag while holding the inode lock during fsync

Filipe Manana <[email protected]>
Btrfs: add missing extents release on file extent cluster relocation error

Qu Wenruo <[email protected]>
btrfs: block-group: Fix a memory leak due to missing btrfs_put_block_group()

Patrick Williams <[email protected]>
pinctrl: armada-37xx: swap polarity on LED group

Patrick Williams <[email protected]>
pinctrl: armada-37xx: fix control of pins 32 and up

Dmitry Torokhov <[email protected]>
pinctrl: cherryview: restore Strago DMI workaround for all versions

Sean Christopherson <[email protected]>
x86/apic/x2apic: Fix a NULL pointer deref when handling a dying cpu

Steve Wahl <[email protected]>
x86/boot/64: Make level2_kernel_pgt pages invalid outside kernel area

Mikulas Patocka <[email protected]>
dm cache: fix bugs when a GFP_NOWAIT allocation fails

Prateek Sood <[email protected]>
tracing: Fix race in perf_trace_buf initialization

Alexander Shishkin <[email protected]>
perf/aux: Fix AUX output stopping

Pavel Shilovsky <[email protected]>
CIFS: Fix use after free of file info structures

Roberto Bergantinos Corpas <[email protected]>

    CIFS: avoid using MID 0xFFFF

Marc Zyngier <[email protected]>
arm64: Enable workaround for Cavium TX2 erratum 219 when running SMT

James Morse <[email protected]>
EDAC/ghes: Fix Use after free in ghes_edac remove path

Helge Deller <[email protected]>
parisc: Fix vmap memory leak in ioremap()/iounmap()

Max Filippov <[email protected]>
xtensa: drop EXPORT_SYMBOL for outs*/ins*

Jane Chu <[email protected]>
mm/memory-failure: poison read receives SIGKILL instead of SIGBUS if mmaped more than once

David Hildenbrand <[email protected]>
hugetlbfs: don't access uninitialized memmaps in pfn_range_valid_gigantic()

Qian Cai <[email protected]>
mm/page_owner: don't access uninitialized memmaps when reading /proc/pagetypeinfo

Qian Cai <[email protected]>
mm/slub: fix a deadlock in show_slab_objects()

David Hildenbrand <[email protected]>
mm/memory-failure.c: don't access uninitialized memmaps in memory_failure()

Faiz Abbas <[email protected]>
mmc: cqhci: Commit descriptors before setting the doorbell

David Hildenbrand <[email protected]>
fs/proc/page.c: don't access uninitialized memmaps in fs/proc/page.c

David Hildenbrand <[email protected]>
drivers/base/memory.c: don't access uninitialized memmaps in soft_offline_page_store()

Hans de Goede <[email protected]>
drm/amdgpu: Bail earlier when amdgpu.cik_/si_support is not set to 1

Thomas Hellstrom <[email protected]>
drm/ttm: Restore ttm prefaulting

Kai-Heng Feng <[email protected]>
drm/edid: Add 6 bpc quirk for SDC panel in Lenovo G50

Will Deacon <[email protected]>
mac80211: Reject malformed SSID elements

Will Deacon <[email protected]>
cfg80211: wext: avoid copying malformed SSIDs

John Garry <[email protected]>
ACPI: CPPC: Set pcc_data[pcc_ss_id] to NULL in acpi_cppc_processor_exit()

Junya Monden <[email protected]>
ASoC: rsnd: Reinitialize bit clock inversion flag for every format setting

Evan Green <[email protected]>
Input: synaptics-rmi4 - avoid processing unknown IRQs

Marco Felsch <[email protected]>
Input: da9063 - fix capability and drop KEY_SLEEP

Bart Van Assche <[email protected]>
scsi: ch: Make it possible to open a ch device multiple times again

Yufen Yu <[email protected]>
scsi: core: try to get module before removing device

Damien Le Moal <[email protected]>
scsi: core: save/restore command resid for error handling

Oliver Neukum <[email protected]>
scsi: sd: Ignore a failure to sync cache due to lack of authorization

Steffen Maier <[email protected]>
scsi: zfcp: fix reaction on bit error threshold notification

Colin Ian King <[email protected]>

    staging: wlan-ng: fix exit return when sme->key_idx >= NUM_WEPKEYS

Paul Burton <[email protected]>
MIPS: tlbex: Fix build_restore_pagemask KScratch restore

Johan Hovold <[email protected]>
USB: ldusb: fix read info leaks

Johan Hovold <[email protected]>
USB: usblp: fix use-after-free on disconnect

Johan Hovold <[email protected]>
USB: ldusb: fix memleak on disconnect

Johan Hovold <[email protected]>

    USB: serial: ti_usb_3410_5052: fix port-close races

Gustavo A. R. Silva <[email protected]>
usb: udc: lpc32xx: fix bad bit shift operation

Lukas Wunner <[email protected]>
ALSA: hda - Force runtime PM on Nvidia HDMI codecs

Szabolcs Szőke <[email protected]>
ALSA: usb-audio: Disable quirks for BOSS Katana amplifiers

Daniel Drake <[email protected]>
ALSA: hda/realtek - Enable headset mic on Asus MJ401TA

Kailang Yang <[email protected]>
ALSA: hda/realtek - Add support for ALC711

Johan Hovold <[email protected]>
USB: legousbtower: fix memleak on disconnect

Matthew Wilcox (Oracle) <[email protected]>
memfd: Fix locking when tagging pins

Xin Long <[email protected]>
sctp: change sctp_prot .no_autobind with true

Biao Huang <[email protected]>
net: stmmac: disable/enable ptp_ref_clk in suspend/resume flow

Xin Long <[email protected]>
net: ipv6: fix listify ip6_rcv_finish in case of forwarding

Cédric Le Goater <[email protected]>
net/ibmvnic: Fix EOI when running in XIVE mode.

Thomas Bogendoerfer <[email protected]>

    net: i82596: fix dma_alloc_attr for sni_82596

Florian Fainelli <[email protected]>

    net: bcmgenet: Set phydev->dev_flags only for internal PHYs

Florian Fainelli <[email protected]>
net: bcmgenet: Fix RGMII_MODE_EN value for GENET v1/2/3

Eric Dumazet <[email protected]>
net: avoid potential infinite loop in tc_ctl_action()

Stefano Brivio <[email protected]>
ipv4: Return -ENETUNREACH if we can't create route but saddr is valid

Wei Wang <[email protected]>
ipv4: fix race condition between route lookup and invalidation

Yi Li <[email protected]>
ocfs2: fix panic due to ocfs2_wq is null

Alex Deucher <[email protected]>
Revert "drm/radeon: Fix EEH during kexec"

Song Liu <[email protected]>
md/raid0: fix warning message for parameter default_layout

Dan Williams <[email protected]>
libata/ahci: Fix PCS quirk application

Jacob Keller <[email protected]>
namespace: fix namespace.pl script to support relative paths

Kai-Heng Feng <[email protected]>
r8152: Set macpassthru in reset_resume callback

Randy Dunlap <[email protected]>
lib: textsearch: fix escapes in example code

Yizhuo <[email protected]>
net: hisilicon: Fix usage of uninitialized variable in function mdio_sc_cfg_reg_write()

Christophe JAILLET <[email protected]>
mips: Loongson: Fix the link time qualifier of 'serial_exit()'

Wen Yang <[email protected]>
net: dsa: rtl8366rb: add missing of_node_put after calling of_get_child_by_name

Pablo Neira Ayuso <[email protected]>
netfilter: nft_connlimit: disable bh on garbage collection

Miaoqing Pan <[email protected]>
mac80211: fix txq null pointer dereference

Miaoqing Pan <[email protected]>
nl80211: fix null pointer dereference

Ross Lagerwall <[email protected]>
xen/efi: Set nonblocking callbacks

Oleksij Rempel <[email protected]>
MIPS: dts: ar9331: fix interrupt-controller size

Michal Vokáč <[email protected]>
net: dsa: qca8k: Use up to 7 ports for all operations

Peter Ujfalusi <[email protected]>
ARM: dts: am4372: Set memory bandwidth limit for DISPC

Navid Emamdoost <[email protected]>

    ieee802154: ca8210: prevent memory leak

Tony Lindgren <[email protected]>
ARM: OMAP2+: Fix warnings with broken omap2_set_init_voltage()

Tony Lindgren <[email protected]>
ARM: OMAP2+: Fix missing reset done flag for am3 and am43

Quinn Tran <[email protected]>
scsi: qla2xxx: Fix unbound sleep in fcport delete path.

Xiang Chen <[email protected]>
scsi: megaraid: disable device when probe failed after enabled device

Stanley Chu <[email protected]>
scsi: ufs: skip shutdown if hba is not powered

Balbir Singh <[email protected]>
nvme-pci: Fix a race in controller removal

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

Diffstat:

 Makefile                                           |   4 +-
 arch/arm/boot/dts/am4372.dtsi                      |   2 +
 .../mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c |   3 +-
 arch/arm/mach-omap2/pm.c                           | 100 ---------------------
 arch/arm/xen/efi.c                                 |   2 +
 arch/arm64/kernel/cpu_errata.c                     |  33 +++++++
 arch/mips/boot/dts/qca/ar9331.dtsi                 |   2 +-
 arch/mips/loongson64/common/serial.c               |   2 +-
 arch/mips/mm/tlbex.c                               |  23 +++--
 arch/parisc/mm/ioremap.c                           |  12 +--
 arch/x86/kernel/apic/x2apic_cluster.c              |   3 +-
 arch/x86/kernel/head64.c                           |  22 ++++-
 arch/x86/xen/efi.c                                 |   2 +
 arch/xtensa/kernel/xtensa_ksyms.c                  |   7 --
 block/blk-rq-qos.h                                 |  13 ++-
 drivers/acpi/cppc_acpi.c                           |   2 +-
 drivers/ata/ahci.c                                 |   4 +-
 drivers/base/core.c                                |   3 +
 drivers/base/memory.c                              |   3 +
 drivers/cpufreq/cpufreq.c                          |  10 ---
 drivers/edac/ghes_edac.c                           |   4 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c            |  35 ++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c            |  35 --------
 drivers/gpu/drm/drm_edid.c                         |   3 +
 drivers/gpu/drm/radeon/radeon_drv.c                |   8 --
 drivers/gpu/drm/ttm/ttm_bo_vm.c                    |  16 ++--
 drivers/infiniband/hw/cxgb4/mem.c                  |  28 +++---
 drivers/input/misc/da9063_onkey.c                  |   5 +-
 drivers/input/rmi4/rmi_driver.c                    |   6 +-
 drivers/md/dm-cache-target.c                       |  28 +-----
 drivers/md/raid0.c                                 |   2 +-
 drivers/memstick/host/jmb38x_ms.c                  |   2 +-
 drivers/mmc/host/cqhci.c                           |   3 +-
 drivers/net/dsa/qca8k.c                            |   4 +-
 drivers/net/dsa/rtl8366rb.c                        |  16 ++--
 drivers/net/ethernet/broadcom/genet/bcmgenet.h     |   1 +
 drivers/net/ethernet/broadcom/genet/bcmmii.c       |  11 ++-
 drivers/net/ethernet/hisilicon/hns_mdio.c          |   6 +-
 drivers/net/ethernet/i825xx/lasi_82596.c           |   4 +-
 drivers/net/ethernet/i825xx/lib82596.c             |   4 +-
 drivers/net/ethernet/i825xx/sni_82596.c            |   4 +-
 drivers/net/ethernet/ibm/ibmvnic.c                 |   8 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |  12 ++-
 drivers/net/ieee802154/ca8210.c                    |   2 +-
 drivers/net/usb/r8152.c                            |   3 +-
 drivers/net/xen-netback/interface.c                |   1 -
 drivers/nvme/host/core.c                           |   5 +-
 drivers/pci/pci.c                                  |  24 +++--
 drivers/pinctrl/intel/pinctrl-cherryview.c         |   4 -
 drivers/pinctrl/mvebu/pinctrl-armada-37xx.c        |  26 +++---
 drivers/s390/scsi/zfcp_fsf.c                       |  16 +++-
 drivers/scsi/ch.c                                  |   1 -
 drivers/scsi/megaraid.c                            |   4 +-
 drivers/scsi/qla2xxx/qla_target.c                  |   4 +
 drivers/scsi/scsi_error.c                          |   3 +
 drivers/scsi/scsi_sysfs.c                          |  11 ++-
 drivers/scsi/sd.c                                  |   3 +-
 drivers/scsi/ufs/ufshcd.c                          |   3 +
 drivers/staging/wlan-ng/cfg80211.c                 |   6 +-
 drivers/usb/class/usblp.c                          |   4 +-
 drivers/usb/gadget/udc/lpc32xx_udc.c               |   6 +-
 drivers/usb/misc/ldusb.c                           |  23 ++---
 drivers/usb/misc/legousbtower.c                    |   5 +-
 drivers/usb/serial/ti_usb_3410_5052.c              |  10 +--
 fs/btrfs/extent-tree.c                             |   1 +
 fs/btrfs/file.c                                    |  36 ++++----
 fs/btrfs/relocation.c                              |   2 +
 fs/cifs/file.c                                     |   6 +-
 fs/cifs/smb1ops.c                                  |   3 +
 fs/ocfs2/journal.c                                 |   3 +-
 fs/ocfs2/localalloc.c                              |   3 +-
 fs/proc/page.c                                     |  28 +++---
 include/scsi/scsi_eh.h                             |   1 +
 include/trace/events/btrfs.h                       |   3 +-
 kernel/events/core.c                               |   2 +-
 kernel/trace/trace_event_perf.c                    |   4 +
 lib/textsearch.c                                   |   4 +-
 mm/hugetlb.c                                       |   5 +-
 mm/memfd.c                                         |  18 ++--
 mm/memory-failure.c                                |  36 ++++----
 mm/page_owner.c                                    |   5 +-
 mm/slub.c                                          |  13 ++-
 net/ipv4/route.c                                   |  11 ++-
 net/ipv6/ip6_input.c                               |   4 +-
 net/mac80211/debugfs_netdev.c                      |  11 ++-
 net/mac80211/mlme.c                                |   5 +-
 net/netfilter/nft_connlimit.c                      |   7 +-
 net/sched/act_api.c                                |  14 +--
 net/sctp/socket.c                                  |   4 +-
 net/wireless/nl80211.c                             |   3 +
 net/wireless/wext-sme.c                            |   8 +-
 scripts/namespace.pl                               |  13 +--
 sound/pci/hda/patch_hdmi.c                         |   2 +
 sound/pci/hda/patch_realtek.c                      |  14 +++
 sound/soc/sh/rcar/core.c                           |   1 +
 sound/usb/pcm.c                                    |   3 +
 96 files changed, 495 insertions(+), 439 deletions(-)

From: Balbir Singh <[email protected]>

[ Upstream commit b224726de5e496dbf78147a66755c3d81e28bdd2 ]

User space programs like udevd may try to read to partitions at the same time the driver detects a namespace is unusable, and may deadlock if revalidate_disk() is called while such a process is waiting to enter the frozen queue. On detecting a dead namespace, move the disk revalidate after unblocking dispatchers that may be holding bd_butex.

changelog Suggested-by: Keith Busch <[email protected]>

---
 drivers/nvme/host/core.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

index ae0b01059fc6d..5d0f99bcc987f 100644
@@ -111,10 +111,13 @@ static void nvme_set_queue_dying(struct nvme_ns *ns)
 	 */
 	if (!ns->disk || test_and_set_bit(NVME_NS_DEAD, &ns->flags))
 		return;
-	revalidate_disk(ns->disk);
 	blk_set_queue_dying(ns->queue);
 	/* Forcibly unquiesce queues to avoid blocking dispatch */
 	blk_mq_unquiesce_queue(ns->queue);
+	/*
+	 * Revalidate after unblocking dispatchers that may be holding bd_butex
+	 */
+	revalidate_disk(ns->disk);
 }
 
 static void nvme_queue_scan(struct nvme_ctrl *ctrl)

2.20.1

From: Stanley Chu <[email protected]>

[ Upstream commit f51913eef23f74c3bd07899dc7f1ed6df9e521d8 ]

In some cases, hba may go through shutdown flow without successful initialization and then make system hang.

For example, if ufshcd_change_power_mode() gets error and leads to ufshcd_hba_exit() to release resources of the host, future shutdown flow may hang the system since the host register will be accessed in unpowered state.

To solve this issue, simply add checking to skip shutdown for above kind of situation.

---
 drivers/scsi/ufs/ufshcd.c | 3 +++
 1 file changed, 3 insertions(+)

index b8b59cfeacd1f..4aaba3e030554 100644
@@ -7874,6 +7874,9 @@ int ufshcd_shutdown(struct ufs_hba *hba)
 {
 	int ret = 0;
 
+	if (!hba->is_powered)
+		goto out;
+
 	if (ufshcd_is_ufs_dev_poweroff(hba) && ufshcd_is_link_off(hba))
 		goto out;
 

2.20.1

From: Xiang Chen <[email protected]>

[ Upstream commit 70054aa39a013fa52eff432f2223b8bd5c0048f8 ]

For pci device, need to disable device when probe failed after enabled device.

---
 drivers/scsi/megaraid.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index 8c7154143a4eb..a84878fbf45d2 100644
@@ -4189,11 +4189,11 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 		 */
 		if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
 		    pdev->subsystem_device == 0xC000)
-		   	return -ENODEV;
+			goto out_disable_device;
 		/* Now check the magic signature byte */
 		pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
 		if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
-			return -ENODEV;
+			goto out_disable_device;
 		/* Ok it is probably a megaraid */
 	}
 

2.20.1

From: Quinn Tran <[email protected]>

[ Upstream commit c3b6a1d397420a0fdd97af2f06abfb78adc370df ]

There are instances, though rare, where a LOGO request cannot be sent out and the thread in free session done can wait indefinitely. Fix this by putting an upper bound to sleep.

---
 drivers/scsi/qla2xxx/qla_target.c | 4 ++++
 1 file changed, 4 insertions(+)

index 7a1cc0b25e594..d6dc320f81a7a 100644
@@ -1023,6 +1023,7 @@ void qlt_free_session_done(struct work_struct *work)
 
 	if (logout_started) {
 		bool traced = false;
+		u16 cnt = 0;
 
 		while (!READ_ONCE(sess->logout_completed)) {
 			if (!traced) {

@@ -1032,6 +1033,9 @@ void qlt_free_session_done(struct work_struct *work)
 				traced = true;
 			}
 			msleep(100);
+			cnt++;
+			if (cnt > 200)
+				break;
 		}
 
 		ql_dbg(ql_dbg_disc, vha, 0xf087,

2.20.1

From: Tony Lindgren <[email protected]>

[ Upstream commit 8ad8041b98c665b6147e607b749586d6e20ba73a ]

For ti,sysc-omap4 compatible devices with no sysstatus register, we do have reset done status available in the SOFTRESET bit that clears when the reset is done. This is documented for example in am437x TRM for DMTIMER_TIOCP_CFG register. The am335x TRM just says that SOFTRESET bit value 1 means reset is ongoing, but it behaves the same way clearing after reset is done.

With the ti-sysc driver handling this automatically based on no sysstatus register defined, we see warnings if SYSC_HAS_RESET_STATUS is missing in the legacy platform data:

ti-sysc 48042000.target-module: sysc_flags 00000222 != 00000022 ti-sysc 48044000.target-module: sysc_flags 00000222 != 00000022 ti-sysc 48046000.target-module: sysc_flags 00000222 != 00000022
...

Let's fix these warnings by adding SYSC_HAS_RESET_STATUS. Let's also remove the useless parentheses while at it.

If it turns out we do have ti,sysc-omap4 compatible devices without a working SOFTRESET bit we can set up additional quirk handling for it.

---
 arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index 9ded7bf972e71..3b8fe014a3e94 100644
@@ -946,7 +946,8 @@ static struct omap_hwmod_class_sysconfig am33xx_timer_sysc = {
 	.rev_offs	= 0x0000,
 	.sysc_offs	= 0x0010,
 	.syss_offs	= 0x0014,
-	.sysc_flags	= (SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET),
+	.sysc_flags	= SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET |
+			  SYSC_HAS_RESET_STATUS,
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
 			  SIDLE_SMART_WKUP),
 	.sysc_fields	= &omap_hwmod_sysc_type2,

2.20.1

From: Tony Lindgren <[email protected]>

[ Upstream commit cf395f7ddb9ebc6b2d28d83b53d18aa4e7c19701 ]

This code is currently unable to find the dts opp tables as ti-cpufreq needs to set them up first based on speed binning.

We stopped initializing the opp tables with platform code years ago for device tree based booting with commit 92d51856d740 ("ARM: OMAP3+: do not register non-dt OPP tables for device tree boot"), and all of mach-omap2 is now booting using device tree.

We currently get the following errors on init:

omap2_set_init_voltage: unable to find boot up OPP for vdd_mpu
omap2_set_init_voltage: unable to set vdd_mpu
omap2_set_init_voltage: unable to find boot up OPP for vdd_core
omap2_set_init_voltage: unable to set vdd_core
omap2_set_init_voltage: unable to find boot up OPP for vdd_iva
omap2_set_init_voltage: unable to set vdd_iva

Let's just drop the unused code. Nowadays ti-cpufreq should be used to to initialize things properly.

---
 arch/arm/mach-omap2/pm.c | 100 ---------------------------------------
 1 file changed, 100 deletions(-)

index ca03af8fe43ff..ddf96adf65ab3 100644
@@ -77,83 +77,6 @@ int omap_pm_clkdms_setup(struct clockdomain *clkdm, void *unused)
 	return 0;
 }
 
-/*
- * This API is to be called during init to set the various voltage
- * domains to the voltage as per the opp table. Typically we boot up
- * at the nominal voltage. So this function finds out the rate of
- * the clock associated with the voltage domain, finds out the correct
- * opp entry and sets the voltage domain to the voltage specified
- * in the opp entry
- */
-static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
-					 const char *oh_name)
-{
-	struct voltagedomain *voltdm;
-	struct clk *clk;
-	struct dev_pm_opp *opp;
-	unsigned long freq, bootup_volt;
-	struct device *dev;
-
-	if (!vdd_name || !clk_name || !oh_name) {
-		pr_err("%s: invalid parameters\n", __func__);
-		goto exit;
-	}
-
-	if (!strncmp(oh_name, "mpu", 3))
-		/* 
-		 * All current OMAPs share voltage rail and clock
-		 * source, so CPU0 is used to represent the MPU-SS.
-		 */
-		dev = get_cpu_device(0);
-	else
-		dev = omap_device_get_by_hwmod_name(oh_name);
-
-	if (IS_ERR(dev)) {
-		pr_err("%s: Unable to get dev pointer for hwmod %s\n",
-			__func__, oh_name);
-		goto exit;
-	}
-
-	voltdm = voltdm_lookup(vdd_name);
-	if (!voltdm) {
-		pr_err("%s: unable to get vdd pointer for vdd_%s\n",
-			__func__, vdd_name);
-		goto exit;
-	}
-
-	clk =  clk_get(NULL, clk_name);
-	if (IS_ERR(clk)) {
-		pr_err("%s: unable to get clk %s\n", __func__, clk_name);
-		goto exit;
-	}
-
-	freq = clk_get_rate(clk);
-	clk_put(clk);
-
-	opp = dev_pm_opp_find_freq_ceil(dev, &freq);
-	if (IS_ERR(opp)) {
-		pr_err("%s: unable to find boot up OPP for vdd_%s\n",
-			__func__, vdd_name);
-		goto exit;
-	}
-
-	bootup_volt = dev_pm_opp_get_voltage(opp);
-	dev_pm_opp_put(opp);
-
-	if (!bootup_volt) {
-		pr_err("%s: unable to find voltage corresponding to the bootup OPP for vdd_%s\n",
-		       __func__, vdd_name);
-		goto exit;
-	}
-
-	voltdm_scale(voltdm, bootup_volt);
-	return 0;
-
-exit:
-	pr_err("%s: unable to set vdd_%s\n", __func__, vdd_name);
-	return -EINVAL;
-}
-
 #ifdef CONFIG_SUSPEND
 static int omap_pm_enter(suspend_state_t suspend_state)
 {

@@ -211,25 +134,6 @@ void omap_common_suspend_init(void *pm_suspend)
 }
 #endif /* CONFIG_SUSPEND */
 
-static void __init omap3_init_voltages(void)
-{
-	if (!soc_is_omap34xx())
-		return;
-
-	omap2_set_init_voltage("mpu_iva", "dpll1_ck", "mpu");
-	omap2_set_init_voltage("core", "l3_ick", "l3_main");
-}
-
-static void __init omap4_init_voltages(void)
-{
-	if (!soc_is_omap44xx())
-		return;
-
-	omap2_set_init_voltage("mpu", "dpll_mpu_ck", "mpu");
-	omap2_set_init_voltage("core", "l3_div_ck", "l3_main_1");
-	omap2_set_init_voltage("iva", "dpll_iva_m5x2_ck", "iva");
-}
-
 int __maybe_unused omap_pm_nop_init(void)
 {
 	return 0;

@@ -249,10 +153,6 @@ int __init omap2_common_pm_late_init(void)
 	omap4_twl_init();
 	omap_voltage_late_init();
 
-	/* Initialize the voltages */
-	omap3_init_voltages();
-	omap4_init_voltages();
-
 	/* Smartreflex device init */
 	omap_devinit_smartreflex();
 

2.20.1

From: Navid Emamdoost <[email protected]>

[ Upstream commit 6402939ec86eaf226c8b8ae00ed983936b164908 ]

In ca8210_probe the allocated pdata needs to be assigned to spi_device->dev.platform_data before calling ca8210_get_platform_data. Othrwise when ca8210_get_platform_data fails pdata cannot be released.

---
 drivers/net/ieee802154/ca8210.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index b2ff903a9cb6e..38a41651e451c 100644
@@ -3151,12 +3151,12 @@ static int ca8210_probe(struct spi_device *spi_device)
 		goto error;
 	}
 
+	priv->spi->dev.platform_data = pdata;
 	ret = ca8210_get_platform_data(priv->spi, pdata);
 	if (ret) {
 		dev_crit(&spi_device->dev, "ca8210_get_platform_data failed\n");
 		goto error;
 	}
-	priv->spi->dev.platform_data = pdata;
 
 	ret = ca8210_dev_com_init(priv);
 	if (ret) {

2.20.1

From: Peter Ujfalusi <[email protected]>

[ Upstream commit f90ec6cdf674248dcad85bf9af6e064bf472b841 ]

Set memory bandwidth limit to filter out resolutions above 720p@60Hz to avoid underflow errors due to the bandwidth needs of higher resolutions.

am43xx can not provide enough bandwidth to DISPC to correctly handle 'high' resolutions.

---
 arch/arm/boot/dts/am4372.dtsi | 2 ++
 1 file changed, 2 insertions(+)

index d4b7c59eec685..cf1e4f747242f 100644
@@ -1142,6 +1142,8 @@
 				ti,hwmods = "dss_dispc";
 				clocks = <&disp_clk>;
 				clock-names = "fck";
+
+				max-memory-bandwidth = <230000000>;
 			};
 
 			rfbi: rfbi@4832a800 {

2.20.1

From: Michal Vokáč <[email protected]>

[ Upstream commit 7ae6d93c8f052b7a77ba56ed0f654e22a2876739 ]

The QCA8K family supports up to 7 ports. So use the existing QCA8K_NUM_PORTS define to allocate the switch structure and limit all operations with the switch ports.

This was not an issue until commit 0394a63acfe2 ("net: dsa: enable and disable all ports") disabled all unused ports. Since the unused ports 7-11 are outside of the correct register range on this switch some registers were rewritten with invalid content.

---
 drivers/net/dsa/qca8k.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index bdd8f2df66303..33232cc9fb04d 100644
@@ -543,7 +543,7 @@ qca8k_setup(struct dsa_switch *ds)
 		    BIT(0) << QCA8K_GLOBAL_FW_CTRL1_UC_DP_S);
 
 	/* Setup connection between CPU port & user ports */
-	for (i = 0; i < DSA_MAX_PORTS; i++) {
+	for (i = 0; i < QCA8K_NUM_PORTS; i++) {
 		/* CPU port gets connected to all user ports of the switch */
 		if (dsa_is_cpu_port(ds, i)) {
 			qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(QCA8K_CPU_PORT),

@@ -897,7 +897,7 @@ qca8k_sw_probe(struct mdio_device *mdiodev)
 	if (id != QCA8K_ID_QCA8337)
 		return -ENODEV;
 
-	priv->ds = dsa_switch_alloc(&mdiodev->dev, DSA_MAX_PORTS);
+	priv->ds = dsa_switch_alloc(&mdiodev->dev, QCA8K_NUM_PORTS);
 	if (!priv->ds)
 		return -ENOMEM;
 

2.20.1

From: Oleksij Rempel <[email protected]>

[ Upstream commit 0889d07f3e4b171c453b2aaf2b257f9074cdf624 ]

It is two registers each of 4 byte.

---
 arch/mips/boot/dts/qca/ar9331.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 2bae201aa3651..1c7bf11f8450b 100644
@@ -99,7 +99,7 @@
 
 			miscintc: interrupt-controller@18060010 {
 				compatible = "qca,ar7240-misc-intc";
-				reg = <0x18060010 0x4>;
+				reg = <0x18060010 0x8>;
 
 				interrupt-parent = <&cpuintc>;
 				interrupts = <6>;

2.20.1

From: Ross Lagerwall <[email protected]>

[ Upstream commit df359f0d09dc029829b66322707a2f558cb720f7 ]

Other parts of the kernel expect these nonblocking EFI callbacks to exist and crash when running under Xen. Since the implementations of xen_efi_set_variable() and xen_efi_query_variable_info() do not take any locks, use them for the nonblocking callbacks too.

---
 arch/arm/xen/efi.c | 2 ++
 arch/x86/xen/efi.c | 2 ++
 2 files changed, 4 insertions(+)

index b4d78959cadf0..bc9a37b3cecd6 100644
@@ -31,7 +31,9 @@ void __init xen_efi_runtime_setup(void)
 	efi.get_variable             = xen_efi_get_variable;
 	efi.get_next_variable        = xen_efi_get_next_variable;
 	efi.set_variable             = xen_efi_set_variable;
+	efi.set_variable_nonblocking = xen_efi_set_variable;
 	efi.query_variable_info      = xen_efi_query_variable_info;
+	efi.query_variable_info_nonblocking = xen_efi_query_variable_info;
 	efi.update_capsule           = xen_efi_update_capsule;
 	efi.query_capsule_caps       = xen_efi_query_capsule_caps;
 	efi.get_next_high_mono_count = xen_efi_get_next_high_mono_count;

index 1804b27f9632a..66bcdeeee639a 100644
@@ -77,7 +77,9 @@ static efi_system_table_t __init *xen_efi_probe(void)
 	efi.get_variable             = xen_efi_get_variable;
 	efi.get_next_variable        = xen_efi_get_next_variable;
 	efi.set_variable             = xen_efi_set_variable;
+	efi.set_variable_nonblocking = xen_efi_set_variable;
 	efi.query_variable_info      = xen_efi_query_variable_info;
+	efi.query_variable_info_nonblocking = xen_efi_query_variable_info;
 	efi.update_capsule           = xen_efi_update_capsule;
 	efi.query_capsule_caps       = xen_efi_query_capsule_caps;
 	efi.get_next_high_mono_count = xen_efi_get_next_high_mono_count;

2.20.1

From: Miaoqing Pan <[email protected]>

[ Upstream commit b501426cf86e70649c983c52f4c823b3c40d72a3 ]

If the interface is not in MESH mode, the command 'iw wlanx mpath del' will cause kernel panic.

The root cause is null pointer access in mpp_flush_by_proxy(), as the pointer 'sdata->u.mesh.mpp_paths' is NULL for non MESH interface.

Unable to handle kernel NULL pointer dereference at virtual address 00000068

[...]
PC is at _raw_spin_lock_bh+0x20/0x5c
LR is at mesh_path_del+0x1c/0x17c [mac80211]
[...]
Process iw (pid: 4537, stack limit = 0xd83e0238)
[...]
[<c021211c>] (_raw_spin_lock_bh) from [<bf8c7648>] (mesh_path_del+0x1c/0x17c [mac80211]) [<bf8c7648>] (mesh_path_del [mac80211]) from [<bf6cdb7c>] (extack_doit+0x20/0x68 [compat]) [<bf6cdb7c>] (extack_doit [compat]) from [<c05c309c>] (genl_rcv_msg+0x274/0x30c) [<c05c309c>] (genl_rcv_msg) from [<c05c25d8>] (netlink_rcv_skb+0x58/0xac) [<c05c25d8>] (netlink_rcv_skb) from [<c05c2e14>] (genl_rcv+0x20/0x34) [<c05c2e14>] (genl_rcv) from [<c05c1f90>] (netlink_unicast+0x11c/0x204) [<c05c1f90>] (netlink_unicast) from [<c05c2420>] (netlink_sendmsg+0x30c/0x370) [<c05c2420>] (netlink_sendmsg) from [<c05886d0>] (sock_sendmsg+0x70/0x84) [<c05886d0>] (sock_sendmsg) from [<c0589f4c>] (___sys_sendmsg.part.3+0x188/0x228) [<c0589f4c>] (___sys_sendmsg.part.3) from [<c058add4>] (__sys_sendmsg+0x4c/0x70) [<c058add4>] (__sys_sendmsg) from [<c0208c80>] (ret_fast_syscall+0x0/0x44)

Code: e2822c02 e2822001 e5832004 f590f000 (e1902f9f)
---[ end trace bbd717600f8f884d ]---

---
 net/wireless/nl80211.c | 3 +++
 1 file changed, 3 insertions(+)

index 334e3181f1c52..a28d6456e93e2 100644
@@ -5843,6 +5843,9 @@ static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
 	if (!rdev->ops->del_mpath)
 		return -EOPNOTSUPP;
 
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+		return -EOPNOTSUPP;
+
 	return rdev_del_mpath(rdev, dev, dst);
 }
 

2.20.1

From: Miaoqing Pan <[email protected]>

[ Upstream commit 8ed31a264065ae92058ce54aa3cc8da8d81dc6d7 ]

If the interface type is P2P_DEVICE or NAN, read the file of '/sys/kernel/debug/ieee80211/phyx/netdev:wlanx/aqm' will get a NULL pointer dereference. As for those interface type, the pointer sdata->vif.txq is NULL.

Unable to handle kernel NULL pointer dereference at virtual address 00000011
CPU: 1 PID: 30936 Comm: cat Not tainted 4.14.104 #1

task: ffffffc0337e4880 task.stack: ffffff800cd20000 PC is at ieee80211_if_fmt_aqm+0x34/0xa0 [mac80211] LR is at ieee80211_if_fmt_aqm+0x34/0xa0 [mac80211] [...]
Process cat (pid: 30936, stack limit = 0xffffff800cd20000) [...]

[<ffffff8000b7cd00>] ieee80211_if_fmt_aqm+0x34/0xa0 [mac80211]
[<ffffff8000b7c414>] ieee80211_if_read+0x60/0xbc [mac80211]
[<ffffff8000b7ccc4>] ieee80211_if_read_aqm+0x28/0x30 [mac80211]
[<ffffff80082eff94>] full_proxy_read+0x2c/0x48
[<ffffff80081eef00>] __vfs_read+0x2c/0xd4
[<ffffff80081ef084>] vfs_read+0x8c/0x108
[<ffffff80081ef494>] SyS_read+0x40/0x7c

---
 net/mac80211/debugfs_netdev.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

index d37d4acafebf5..316250ae90712 100644
@@ -490,9 +490,14 @@ static ssize_t ieee80211_if_fmt_aqm(
 	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 {
 	struct ieee80211_local *local = sdata->local;
-	struct txq_info *txqi = to_txq_info(sdata->vif.txq);
+	struct txq_info *txqi;
 	int len;
 
+	if (!sdata->vif.txq)
+		return 0;
+
+	txqi = to_txq_info(sdata->vif.txq);
+
 	spin_lock_bh(&local->fq.lock);
 	rcu_read_lock();
 

@@ -659,7 +664,9 @@ static void add_common_files(struct ieee80211_sub_if_data *sdata)
 	DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz);
 	DEBUGFS_ADD(hw_queues);
 
-	if (sdata->local->ops->wake_tx_queue)
+	if (sdata->local->ops->wake_tx_queue &&
+	    sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
+	    sdata->vif.type != NL80211_IFTYPE_NAN)
 		DEBUGFS_ADD(aqm);
 }
 

2.20.1

From: Pablo Neira Ayuso <[email protected]>

[ Upstream commit 34a4c95abd25ab41fb390b985a08a651b1fa0b0f ]

BH must be disabled when invoking nf_conncount_gc_list() to perform garbage collection, otherwise deadlock might happen.

  nf_conncount_add+0x1f/0x50 [nf_conncount]
  nft_connlimit_eval+0x4c/0xe0 [nft_connlimit]
  nft_dynset_eval+0xb5/0x100 [nf_tables]
  nft_do_chain+0xea/0x420 [nf_tables]
  ? sch_direct_xmit+0x111/0x360
  ? noqueue_init+0x10/0x10
  ? __qdisc_run+0x84/0x510
  ? tcp_packet+0x655/0x1610 [nf_conntrack]
  ? ip_finish_output2+0x1a7/0x430
  ? tcp_error+0x130/0x150 [nf_conntrack]
  ? nf_conntrack_in+0x1fc/0x4c0 [nf_conntrack]
  nft_do_chain_ipv4+0x66/0x80 [nf_tables]
  nf_hook_slow+0x44/0xc0
  ip_rcv+0xb5/0xd0
  ? ip_rcv_finish_core.isra.19+0x360/0x360
  __netif_receive_skb_one_core+0x52/0x70
  netif_receive_skb_internal+0x34/0xe0
  napi_gro_receive+0xba/0xe0
  e1000_clean_rx_irq+0x1e9/0x420 [e1000e]
  e1000e_poll+0xbe/0x290 [e1000e]
  net_rx_action+0x149/0x3b0
  __do_softirq+0xde/0x2d8
  irq_exit+0xba/0xc0
  do_IRQ+0x85/0xd0
  common_interrupt+0xf/0xf
  </IRQ>
  RIP: 0010:nf_conncount_gc_list+0x3b/0x130 [nf_conncount]

---
 net/netfilter/nft_connlimit.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

index af1497ab94642..69d6173f91e2b 100644
@@ -218,8 +218,13 @@ static void nft_connlimit_destroy_clone(const struct nft_ctx *ctx,
 static bool nft_connlimit_gc(struct net *net, const struct nft_expr *expr)
 {
 	struct nft_connlimit *priv = nft_expr_priv(expr);
+	bool ret;
 
-	return nf_conncount_gc_list(net, &priv->list);
+	local_bh_disable();
+	ret = nf_conncount_gc_list(net, &priv->list);
+	local_bh_enable();
+
+	return ret;
 }
 
 static struct nft_expr_type nft_connlimit_type;

2.20.1

From: Wen Yang <[email protected]>

[ Upstream commit f32eb9d80470dab05df26b6efd02d653c72e6a11 ]

of_node_put needs to be called when the device node which is got from of_get_child_by_name finished using. irq_domain_add_linear() also calls of_node_get() to increase refcount, so irq_domain will not be affected when it is released.

---
 drivers/net/dsa/rtl8366rb.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

index a4d5049df6928..f4b14b6acd22d 100644
@@ -507,7 +507,8 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
 	irq = of_irq_get(intc, 0);
 	if (irq <= 0) {
 		dev_err(smi->dev, "failed to get parent IRQ\n");
-		return irq ? irq : -EINVAL;
+		ret = irq ? irq : -EINVAL;
+		goto out_put_node;
 	}
 
 	/* This clears the IRQ status register */

@@ -515,7 +516,7 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
 			  &val);
 	if (ret) {
 		dev_err(smi->dev, "can't read interrupt status\n");
-		return ret;
+		goto out_put_node;
 	}
 
 	/* Fetch IRQ edge information from the descriptor */

@@ -537,7 +538,7 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
 				 val);
 	if (ret) {
 		dev_err(smi->dev, "could not configure IRQ polarity\n");
-		return ret;
+		goto out_put_node;
 	}
 
 	ret = devm_request_threaded_irq(smi->dev, irq, NULL,

@@ -545,7 +546,7 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
 					"RTL8366RB", smi);
 	if (ret) {
 		dev_err(smi->dev, "unable to request irq: %d\n", ret);
-		return ret;
+		goto out_put_node;
 	}
 	smi->irqdomain = irq_domain_add_linear(intc,
 					       RTL8366RB_NUM_INTERRUPT,

@@ -553,12 +554,15 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
 					       smi);
 	if (!smi->irqdomain) {
 		dev_err(smi->dev, "failed to create IRQ domain\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto out_put_node;
 	}
 	for (i = 0; i < smi->num_ports; i++)
 		irq_set_parent(irq_create_mapping(smi->irqdomain, i), irq);
 
-	return 0;
+out_put_node:
+	of_node_put(intc);
+	return ret;
 }
 
 static int rtl8366rb_set_addr(struct realtek_smi *smi)

2.20.1

From: Christophe JAILLET <[email protected]>

[ Upstream commit 25b69a889b638b0b7e51e2c4fe717a66bec0e566 ]

'exit' functions should be marked as __exit, not __init.

---
 arch/mips/loongson64/common/serial.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index ffefc1cb26121..98c3a7feb10f8 100644
@@ -110,7 +110,7 @@ static int __init serial_init(void)
 }
 module_init(serial_init);
 
-static void __init serial_exit(void)
+static void __exit serial_exit(void)
 {
 	platform_device_unregister(&uart8250_device);
 }

2.20.1

From: Yizhuo <[email protected]>

[ Upstream commit 53de429f4e88f538f7a8ec2b18be8c0cd9b2c8e1 ]

In function mdio_sc_cfg_reg_write(), variable "reg_value" could be uninitialized if regmap_read() fails. However, "reg_value" is used to decide the control flow later in the if statement, which is potentially unsafe.

---
 drivers/net/ethernet/hisilicon/hns_mdio.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

index baf5cc251f329..9a3bc0994a1db 100644
@@ -156,11 +156,15 @@ static int mdio_sc_cfg_reg_write(struct hns_mdio_device *mdio_dev,
 {
 	u32 time_cnt;
 	u32 reg_value;
+	int ret;
 
 	regmap_write(mdio_dev->subctrl_vbase, cfg_reg, set_val);
 
 	for (time_cnt = MDIO_TIMEOUT; time_cnt; time_cnt--) {
-		regmap_read(mdio_dev->subctrl_vbase, st_reg, &reg_value);
+		ret = regmap_read(mdio_dev->subctrl_vbase, st_reg, &reg_value);
+		if (ret)
+			return ret;
+
 		reg_value &= st_msk;
 		if ((!!check_st) == (!!reg_value))
 			break;

2.20.1

From: Randy Dunlap <[email protected]>

[ Upstream commit 2105b52e30debe7f19f3218598d8ae777dcc6776 ]

This textsearch code example does not need the '\' escapes and they can be misleading to someone reading the example. Also, gcc and sparse warn that the "\%d" is an unknown escape sequence.

---
 lib/textsearch.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index 5939549c0e7bc..9135c29add624 100644
@@ -93,9 +93,9 @@
  *       goto errout;
  *   }
  *
- *   pos = textsearch_find_continuous(conf, \&state, example, strlen(example));
+ *   pos = textsearch_find_continuous(conf, &state, example, strlen(example));
  *   if (pos != UINT_MAX)
- *       panic("Oh my god, dancing chickens at \%d\n", pos);
+ *       panic("Oh my god, dancing chickens at %d\n", pos);
  *
  *   textsearch_destroy(conf);
  */

2.20.1

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

[ Upstream commit a54cdeeb04fc719e4c7f19d6e28dba7ea86cee5b ]

r8152 may fail to establish network connection after resume from system suspend.

If the USB port connects to r8152 lost its power during system suspend, the MAC address was written before is lost. The reason is that The MAC address doesn't get written again in its reset_resume callback.

So let's set MAC address again in reset_resume callback. Also remove unnecessary lock as no other locking attempt will happen during reset_resume.

---
 drivers/net/usb/r8152.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

index a065a6184f7e4..a291e5f2daef6 100644
@@ -4474,10 +4474,9 @@ static int rtl8152_reset_resume(struct usb_interface *intf)
 	struct r8152 *tp = usb_get_intfdata(intf);
 
 	clear_bit(SELECTIVE_SUSPEND, &tp->flags);
-	mutex_lock(&tp->control);
 	tp->rtl_ops.init(tp);
 	queue_delayed_work(system_long_wq, &tp->hw_phy_work, 0);
-	mutex_unlock(&tp->control);
+	set_ethernet_addr(tp);
 	return rtl8152_resume(intf);
 }
 

2.20.1

From: Jacob Keller <[email protected]>

[ Upstream commit 82fdd12b95727640c9a8233c09d602e4518e71f7 ]

The namespace.pl script does not work properly if objtree is not set to an absolute path. The do_nm function is run from within the find function, which changes directories.

Because of this, appending objtree, $File::Find::dir, and $source, will return a path which is not valid from the current directory.

This used to work when objtree was set to an absolute path when using "make namespacecheck". It appears to have not worked when calling ./scripts/namespace.pl directly.

This behavior was changed in 7e1c04779efd ("kbuild: Use relative path for $(objtree)", 2014-05-14)

Rather than fixing the Makefile to set objtree to an absolute path, just fix namespace.pl to work when srctree and objtree are relative. Also fix the script to use an absolute path for these by default.

Use the File::Spec module for this purpose. It's been part of perl 5 since 5.005.

The curdir() function is used to get the current directory when the objtree and srctree aren't set in the environment.

rel2abs() is used to convert possibly relative objtree and srctree environment variables to absolute paths.

Finally, the catfile() function is used instead of string appending paths together, since this is more robust when joining paths together.

---
 scripts/namespace.pl | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

index 6135574a6f394..1da7bca201a42 100755
@@ -65,13 +65,14 @@
 use warnings;
 use strict;
 use File::Find;
+use File::Spec;
 
 my $nm = ($ENV{'NM'} || "nm") . " -p";
 my $objdump = ($ENV{'OBJDUMP'} || "objdump") . " -s -j .comment";
-my $srctree = "";
-my $objtree = "";
-$srctree = "$ENV{'srctree'}/" if (exists($ENV{'srctree'}));
-$objtree = "$ENV{'objtree'}/" if (exists($ENV{'objtree'}));
+my $srctree = File::Spec->curdir();
+my $objtree = File::Spec->curdir();
+$srctree = File::Spec->rel2abs($ENV{'srctree'}) if (exists($ENV{'srctree'}));
+$objtree = File::Spec->rel2abs($ENV{'objtree'}) if (exists($ENV{'objtree'}));
 
 if ($#ARGV != -1) {
 	print STDERR "usage: $0 takes no parameters\n";

@@ -231,9 +232,9 @@ sub do_nm
 	}
 	($source = $basename) =~ s/\.o$//;
 	if (-e "$source.c" || -e "$source.S") {
-		$source = "$objtree$File::Find::dir/$source";
+		$source = File::Spec->catfile($objtree, $File::Find::dir, $source)
 	} else {
-		$source = "$srctree$File::Find::dir/$source";
+		$source = File::Spec->catfile($srctree, $File::Find::dir, $source)
 	}
 	if (! -e "$source.c" && ! -e "$source.S") {
 		# No obvious source, exclude the object if it is conglomerate

2.20.1

From: Dan Williams <[email protected]>

[ Upstream commit 09d6ac8dc51a033ae0043c1fe40b4d02563c2496 ]

Commit c312ef176399 "libata/ahci: Drop PCS quirk for Denverton and beyond" got the polarity wrong on the check for which board-ids should have the quirk applied. The board type board_ahci_pcs7 is defined at the end of the list such that "pcs7" boards can be special cased in the future if they need the quirk. All prior Intel board ids "< board_ahci_pcs7" should proceed with applying the quirk.

---
 drivers/ata/ahci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

index 5d110b1362e74..fa1c5a4429579 100644
@@ -1633,7 +1633,9 @@ static void ahci_intel_pcs_quirk(struct pci_dev *pdev, struct ahci_host_priv *hp
 	 */
 	if (!id || id->vendor != PCI_VENDOR_ID_INTEL)
 		return;
-	if (((enum board_ids) id->driver_data) < board_ahci_pcs7)
+
+	/* Skip applying the quirk on Denverton and beyond */
+	if (((enum board_ids) id->driver_data) >= board_ahci_pcs7)
 		return;
 
 	/*

2.20.1

From: Song Liu <[email protected]>

[ Upstream commit 3874d73e06c9b9dc15de0b7382fc223986d75571 ]

The message should match the parameter, i.e. raid0.default_layout.

---
 drivers/md/raid0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 43fa7dbf844b0..3cafbfd655f5d 100644
@@ -158,7 +158,7 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
 	} else {
 		pr_err("md/raid0:%s: cannot assemble multi-zone RAID0 with default_layout setting\n",
 		       mdname(mddev));
-		pr_err("md/raid0: please set raid.default_layout to 1 or 2\n");
+		pr_err("md/raid0: please set raid0.default_layout to 1 or 2\n");
 		err = -ENOTSUPP;
 		goto abort;
 	}

2.20.1

From: Alex Deucher <[email protected]>

[ Upstream commit 8d13c187c42e110625d60094668a8f778c092879 ]

This reverts commit 6f7fe9a93e6c09bf988c5059403f5f88e17e21e6.

This breaks some boards. Maybe just enable this on PPC for now?

---
 drivers/gpu/drm/radeon/radeon_drv.c | 8 --------
 1 file changed, 8 deletions(-)

index d83310751a8e4..c26f09b47ecb2 100644
@@ -395,19 +395,11 @@ radeon_pci_remove(struct pci_dev *pdev)
 static void
 radeon_pci_shutdown(struct pci_dev *pdev)
 {
-	struct drm_device *ddev = pci_get_drvdata(pdev);
-
 	/* if we are running in a VM, make sure the device
 	 * torn down properly on reboot/shutdown
 	 */
 	if (radeon_device_is_virtual())
 		radeon_pci_remove(pdev);
-
-	/* Some adapters need to be suspended before a
-	* shutdown occurs in order to prevent an error
-	* during kexec.
-	*/
-	radeon_suspend_kms(ddev, true, true, false);
 }
 
 static int radeon_pmops_suspend(struct device *dev)

2.20.1

From: Yi Li <[email protected]>

commit b918c43021baaa3648de09e19a4a3dd555a45f40 upstream.

mount.ocfs2 failed when reading ocfs2 filesystem superblock encounters an error. ocfs2_initialize_super() returns before allocating ocfs2_wq. ocfs2_dismount_volume() triggers the following panic.

  Oct 15 16:09:27 cnwarekv-205120 kernel: On-disk corruption discovered.Please run fsck.ocfs2 once the filesystem is unmounted.
  Oct 15 16:09:27 cnwarekv-205120 kernel: (mount.ocfs2,22804,44): ocfs2_read_locked_inode:537 ERROR: status = -30
  Oct 15 16:09:27 cnwarekv-205120 kernel: (mount.ocfs2,22804,44): ocfs2_init_global_system_inodes:458 ERROR: status = -30
  Oct 15 16:09:27 cnwarekv-205120 kernel: (mount.ocfs2,22804,44): ocfs2_init_global_system_inodes:491 ERROR: status = -30
  Oct 15 16:09:27 cnwarekv-205120 kernel: (mount.ocfs2,22804,44): ocfs2_initialize_super:2313 ERROR: status = -30
  Oct 15 16:09:27 cnwarekv-205120 kernel: (mount.ocfs2,22804,44): ocfs2_fill_super:1033 ERROR: status = -30
  ------------[ cut here ]------------
  Oops: 0002 [#1] SMP NOPTI
  CPU: 1 PID: 11753 Comm: mount.ocfs2 Tainted: G  E
        4.14.148-200.ckv.x86_64 #1
  Hardware name: Sugon H320-G30/35N16-US, BIOS 0SSDX017 12/21/2018
  task: ffff967af0520000 task.stack: ffffa5f05484000
  RIP: 0010:mutex_lock+0x19/0x20
  Call Trace:
    flush_workqueue+0x81/0x460
    ocfs2_shutdown_local_alloc+0x47/0x440 [ocfs2]
    ocfs2_dismount_volume+0x84/0x400 [ocfs2]
    ocfs2_fill_super+0xa4/0x1270 [ocfs2]
    ? ocfs2_initialize_super.isa.211+0xf20/0xf20 [ocfs2]
    mount_bdev+0x17f/0x1c0
    mount_fs+0x3a/0x160

---
 fs/ocfs2/journal.c    |    3 ++-
 fs/ocfs2/localalloc.c |    3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

@@ -231,7 +231,8 @@ void ocfs2_recovery_exit(struct ocfs2_su
 	/* At this point, we know that no more recovery threads can be
 	 * launched, so wait for any recovery completion work to
 	 * complete. */
-	flush_workqueue(osb->ocfs2_wq);
+	if (osb->ocfs2_wq)
+		flush_workqueue(osb->ocfs2_wq);
 
 	/*
 	 * Now that recovery is shut down, and the osb is about to be

@@ -391,7 +391,8 @@ void ocfs2_shutdown_local_alloc(struct o
 	struct ocfs2_dinode *alloc = NULL;
 
 	cancel_delayed_work(&osb->la_enable_wq);
-	flush_workqueue(osb->ocfs2_wq);
+	if (osb->ocfs2_wq)
+		flush_workqueue(osb->ocfs2_wq);
 
 	if (osb->local_alloc_state == OCFS2_LA_UNUSED)
 		goto out;

From: Wei Wang <[email protected]>

[ Upstream commit 5018c59607a511cdee743b629c76206d9c9e6d7b ]

Jesse and Ido reported the following race condition:
<CPU A, t0> - Received packet A is forwarded and cached dst entry is taken from the nexthop ('nhc->nhc_rth_input'). Calls skb_dst_set()

<t1> - Given Jesse has busy routers ("ingesting full BGP routing tables from multiple ISPs"), route is added / deleted and rt_cache_flush() is called

<CPU B, t2> - Received packet B tries to use the same cached dst entry from t0, but rt_cache_valid() is no longer true and it is replaced in rt_cache_route() by the newer one. This calls dst_dev_put() on the original dst entry which assigns the blackhole netdev to 'dst->dev'

<CPU A, t3> - dst_input(skb) is called on packet A and it is dropped due to 'dst->dev' being the blackhole netdev

There are 2 issues in the v4 routing code:
1. A per-netns counter is used to do the validation of the route. That means whenever a route is changed in the netns, users of all routes in the netns needs to redo lookup. v6 has an implementation of only updating fn_sernum for routes that are affected.
2. When rt_cache_valid() returns false, rt_cache_route() is called to throw away the current cache, and create a new one. This seems unnecessary because as long as this route does not change, the route cache does not need to be recreated.

To fully solve the above 2 issues, it probably needs quite some code changes and requires careful testing, and does not suite for net branch.

So this patch only tries to add the deleted cached rt into the uncached list, so user could still be able to use it to receive packets until it's done.

---
 net/ipv4/route.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -1476,7 +1476,7 @@ static bool rt_cache_route(struct fib_nh
 	prev = cmpxchg(p, orig, rt);
 	if (prev == orig) {
 		if (orig) {
-			dst_dev_put(&orig->dst);
+			rt_add_uncached_list(orig);
 			dst_release(&orig->dst);
 		}
 	} else {

From: Stefano Brivio <[email protected]>

[ Upstream commit 595e0651d0296bad2491a4a29a7a43eae6328b02 ]

...instead of -EINVAL. An issue was found with older kernel versions while unplugging a NFS client with pending RPCs, and the wrong error code here prevented it from recovering once link is back up with a configured address.

Incidentally, this is not an issue anymore since commit 4f8943f80883 ("SUNRPC: Replace direct task wakeups from softirq context"), included in 5.2-rc7, had the effect of decoupling the forwarding of this error by using SO_ERROR in xs_wake_error(), as pointed out by Benjamin Coddington.

To the best of my knowledge, this isn't currently causing any further issue, but the error code doesn't look appropriate anyway, and we might hit this in other paths as well.

In detail, as analysed by Gonzalo Siero, once the route is deleted because the interface is down, and can't be resolved and we return -EINVAL here, this ends up, courtesy of inet_sk_rebuild_header(), as the socket error seen by tcp_write_err(), called by tcp_retransmit_timer().

In turn, tcp_write_err() indirectly calls xs_error_report(), which wakes up the RPC pending tasks with a status of -EINVAL. This is then seen by call_status() in the SUN RPC implementation, which aborts the RPC call calling rpc_exit(), instead of handling this as a potentially temporary condition, i.e. as a timeout.

Return -EINVAL only if the input parameters passed to ip_route_output_key_hash_rcu() are actually invalid (this is the case if the specified source address is multicast, limited broadcast or all zeroes), but return -ENETUNREACH in all cases where, at the given moment, the given source address doesn't allow resolving the route.

While at it, drop the initialisation of err to -ENETUNREACH, which was added to __ip_route_output_key() back then by commit 0315e3827048 ("net: Fix behaviour of unreachable, blackhole and prohibit routes"), but actually had no effect, as it was, and is, overwritten by the fib_lookup() return code assignment, and anyway ignored in all other branches, including the if (fl4->saddr) one:
I find this rather confusing, as it would look like -ENETUNREACH is the "default" error, while that statement has no effect.

Also note that after commit fc75fc8339e7 ("ipv4: dont create routes on down devices"), we would get -ENETUNREACH if the device is down, but -EINVAL if the source address is specified and we can't resolve the route, and this appears to be rather inconsistent.

---
 net/ipv4/route.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

@@ -2381,14 +2381,17 @@ struct rtable *ip_route_output_key_hash_
 	int orig_oif = fl4->flowi4_oif;
 	unsigned int flags = 0;
 	struct rtable *rth;
-	int err = -ENETUNREACH;
+	int err;
 
 	if (fl4->saddr) {
-		rth = ERR_PTR(-EINVAL);
 		if (ipv4_is_multicast(fl4->saddr) ||
 		    ipv4_is_lbcast(fl4->saddr) ||
-		    ipv4_is_zeronet(fl4->saddr))
+		    ipv4_is_zeronet(fl4->saddr)) {
+			rth = ERR_PTR(-EINVAL);
 			goto out;
+		}
+
+		rth = ERR_PTR(-ENETUNREACH);
 
 		/* I removed check for oif == dev_out->oif here.
 		   It was wrong for two reasons:

From: Eric Dumazet <[email protected]>

[ Upstream commit 39f13ea2f61b439ebe0060393e9c39925c9ee28c ]

tc_ctl_action() has the ability to loop forever if tcf_action_add() returns -EAGAIN.

This special case has been done in case a module needed to be loaded, but it turns out that tcf_add_notify() could also return -EAGAIN if the socket sk_rcvbuf limit is hit.

We need to separate the two cases, and only loop for the module loading case.

While we are at it, add a limit of 10 attempts since unbounded loops are always scary.

syzbot repro was something like :

socket(PF_NETLINK, SOCK_RAW|SOCK_NONBLOCK, NETLINK_ROUTE) = 3
write(3, ..., 38) = 38
setsockopt(3, SOL_SOCKET, SO_RCVBUF, [0], 4) = 0
sendmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{..., 388}], msg_controllen=0, msg_flags=0x10}, ...)

NMI backtrace for cpu 0

CPU: 0 PID: 1054 Comm: khungtaskd Not tainted 5.4.0-rc1+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0x9d0/0xef0 kernel/hung_task.c:289
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8859 Comm: syz-executor910 Not tainted 5.4.0-rc1+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:751 [inline]
RIP: 0010:lockdep_hardirqs_off+0x1df/0x2e0 kernel/locking/lockdep.c:3453
Code: 5c 08 00 00 5b 41 5c 41 5d 5d c3 48 c7 c0 58 1d f3 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 d3 00 00 00 <48> 83 3d 21 9e 99 07 00 0f 84 b9 00 00 00 9c 58 0f 1f 44 00 00 f6
RSP: 0018:ffff8880a6f3f1b8 EFLAGS: 00000046
RAX: 1ffffffff11e63ab RBX: ffff88808c9c6080 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88808c9c6914
RBP: ffff8880a6f3f1d0 R08: ffff88808c9c6080 R09: fffffbfff16be5d1
R10: fffffbfff16be5d0 R11: 0000000000000003 R12: ffffffff8746591f
R13: ffff88808c9c6080 R14: ffffffff8746591f R15: 0000000000000003
FS:  00000000011e4880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000a8920000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 trace_hardirqs_off+0x62/0x240 kernel/trace/trace_preemptirq.c:45
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
 _raw_spin_lock_irqsave+0x6f/0xcd kernel/locking/spinlock.c:159
 __wake_up_common_lock+0xc8/0x150 kernel/sched/wait.c:122
 __wake_up+0xe/0x10 kernel/sched/wait.c:142
 netlink_unlock_table net/netlink/af_netlink.c:466 [inline]
 netlink_unlock_table net/netlink/af_netlink.c:463 [inline]
 netlink_broadcast_filtered+0x705/0xb80 net/netlink/af_netlink.c:1514
 netlink_broadcast+0x3a/0x50 net/netlink/af_netlink.c:1534
 rtnetlink_send+0xdd/0x110 net/core/rtnetlink.c:714
 tcf_add_notify net/sched/act_api.c:1343 [inline]
 tcf_action_add+0x243/0x370 net/sched/act_api.c:1362
 tc_ctl_action+0x3b5/0x4bc net/sched/act_api.c:1410
 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:5386
 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5404
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:657
 ___sys_sendmsg+0x803/0x920 net/socket.c:2311
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356
 __do_sys_sendmsg net/socket.c:2365 [inline]
 __se_sys_sendmsg net/socket.c:2363 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440939

---
 net/sched/act_api.c |   14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

@@ -1307,11 +1307,16 @@ static int tcf_action_add(struct net *ne
 			  struct netlink_ext_ack *extack)
 {
 	size_t attr_size = 0;
-	int ret = 0;
+	int loop, ret;
 	struct tc_action *actions[TCA_ACT_MAX_PRIO] = {};
 
-	ret = tcf_action_init(net, NULL, nla, NULL, NULL, ovr, 0, actions,
-			      &attr_size, true, extack);
+	for (loop = 0; loop < 10; loop++) {
+		ret = tcf_action_init(net, NULL, nla, NULL, NULL, ovr, 0,
+				      actions, &attr_size, true, extack);
+		if (ret != -EAGAIN)
+			break;
+	}
+
 	if (ret < 0)
 		return ret;
 	ret = tcf_add_notify(net, n, actions, portid, attr_size, extack);

@@ -1361,11 +1366,8 @@ static int tc_ctl_action(struct sk_buff
 		 */
 		if (n->nlmsg_flags & NLM_F_REPLACE)
 			ovr = 1;
-replay:
 		ret = tcf_action_add(net, tca[TCA_ACT_TAB], n, portid, ovr,
 				     extack);
-		if (ret == -EAGAIN)
-			goto replay;
 		break;
 	case RTM_DELACTION:
 		ret = tca_action_gd(net, tca[TCA_ACT_TAB], n,

From: Florian Fainelli <[email protected]>

[ Upstream commit efb86fede98cdc70b674692ff617b1162f642c49 ]

The RGMII_MODE_EN bit value was 0 for GENET versions 1 through 3, and became 6 for GENET v4 and above, account for that difference.

---
 drivers/net/ethernet/broadcom/genet/bcmgenet.h |    1 +
 drivers/net/ethernet/broadcom/genet/bcmmii.c   |    6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

@@ -369,6 +369,7 @@ struct bcmgenet_mib_counters {
 #define  EXT_PWR_DOWN_PHY_EN		(1 << 20)
 
 #define EXT_RGMII_OOB_CTRL		0x0C
+#define  RGMII_MODE_EN_V123		(1 << 0)
 #define  RGMII_LINK			(1 << 4)
 #define  OOB_DISABLE			(1 << 5)
 #define  RGMII_MODE_EN			(1 << 6)

@@ -261,7 +261,11 @@ int bcmgenet_mii_config(struct net_devic
 	 */
 	if (priv->ext_phy) {
 		reg = bcmgenet_ext_readl(priv, EXT_RGMII_OOB_CTRL);
-		reg |= RGMII_MODE_EN | id_mode_dis;
+		reg |= id_mode_dis;
+		if (GENET_IS_V1(priv) || GENET_IS_V2(priv) || GENET_IS_V3(priv))
+			reg |= RGMII_MODE_EN_V123;
+		else
+			reg |= RGMII_MODE_EN;
 		bcmgenet_ext_writel(priv, reg, EXT_RGMII_OOB_CTRL);
 	}
 

From: Florian Fainelli <[email protected]>

[ Upstream commit 92696286f3bb37ba50e4bd8d1beb24afb759a799 ]

phydev->dev_flags is entirely dependent on the PHY device driver which is going to be used, setting the internal GENET PHY revision in those bits only makes sense when drivers/net/phy/bcm7xxx.c is the PHY driver being used.

---
 drivers/net/ethernet/broadcom/genet/bcmmii.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

@@ -280,11 +280,12 @@ int bcmgenet_mii_probe(struct net_device
 	struct bcmgenet_priv *priv = netdev_priv(dev);
 	struct device_node *dn = priv->pdev->dev.of_node;
 	struct phy_device *phydev;
-	u32 phy_flags;
+	u32 phy_flags = 0;
 	int ret;
 
 	/* Communicate the integrated PHY revision */
-	phy_flags = priv->gphy_rev;
+	if (priv->internal_phy)
+		phy_flags = priv->gphy_rev;
 
 	/* Initialize link state variables that bcmgenet_mii_setup() uses */
 	priv->old_link = -1;

From: Thomas Bogendoerfer <[email protected]>

[ Upstream commit 61c1d33daf7b5146f44d4363b3322f8cda6a6c43 ]

Commit 7f683b920479 ("i825xx: switch to switch to dma_alloc_attrs") switched dma allocation over to dma_alloc_attr, but didn't convert the SNI part to request consistent DMA memory. This broke sni_82596 since driver doesn't do dma_cache_sync for performance reasons. Fix this by using different DMA_ATTRs for lasi_82596 and sni_82596.

---
 drivers/net/ethernet/i825xx/lasi_82596.c |    4 +++-
 drivers/net/ethernet/i825xx/lib82596.c   |    4 ++--
 drivers/net/ethernet/i825xx/sni_82596.c  |    4 +++-
 3 files changed, 8 insertions(+), 4 deletions(-)

@@ -96,6 +96,8 @@
 
 #define OPT_SWAP_PORT	0x0001	/* Need to wordswp on the MPU port */
 
+#define LIB82596_DMA_ATTR	DMA_ATTR_NON_CONSISTENT
+
 #define DMA_WBACK(ndev, addr, len) \
 	do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_TO_DEVICE); } while (0)
 

@@ -199,7 +201,7 @@ static int __exit lan_remove_chip(struct
 
 	unregister_netdev (dev);
 	dma_free_attrs(&pdev->dev, sizeof(struct i596_private), lp->dma,
-		       lp->dma_addr, DMA_ATTR_NON_CONSISTENT);
+		       lp->dma_addr, LIB82596_DMA_ATTR);
 	free_netdev (dev);
 	return 0;
 }

@@ -1065,7 +1065,7 @@ static int i82596_probe(struct net_devic
 
 	dma = dma_alloc_attrs(dev->dev.parent, sizeof(struct i596_dma),
 			      &lp->dma_addr, GFP_KERNEL,
-			      DMA_ATTR_NON_CONSISTENT);
+			      LIB82596_DMA_ATTR);
 	if (!dma) {
 		printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__);
 		return -ENOMEM;

@@ -1087,7 +1087,7 @@ static int i82596_probe(struct net_devic
 	i = register_netdev(dev);
 	if (i) {
 		dma_free_attrs(dev->dev.parent, sizeof(struct i596_dma),
-			       dma, lp->dma_addr, DMA_ATTR_NON_CONSISTENT);
+			       dma, lp->dma_addr, LIB82596_DMA_ATTR);
 		return i;
 	}
 

@@ -23,6 +23,8 @@
 
 static const char sni_82596_string[] = "snirm_82596";
 
+#define LIB82596_DMA_ATTR	0
+
 #define DMA_WBACK(priv, addr, len)     do { } while (0)
 #define DMA_INV(priv, addr, len)       do { } while (0)
 #define DMA_WBACK_INV(priv, addr, len) do { } while (0)

@@ -151,7 +153,7 @@ static int sni_82596_driver_remove(struc
 
 	unregister_netdev(dev);
 	dma_free_attrs(dev->dev.parent, sizeof(struct i596_private), lp->dma,
-		       lp->dma_addr, DMA_ATTR_NON_CONSISTENT);
+		       lp->dma_addr, LIB82596_DMA_ATTR);
 	iounmap(lp->ca);
 	iounmap(lp->mpu_port);
 	free_netdev (dev);

From: "C�dric Le Goater" <[email protected]>

[ Upstream commit 11d49ce9f7946dfed4dcf5dbde865c78058b50ab ]

pSeries machines on POWER9 processors can run with the XICS (legacy) interrupt mode or with the XIVE exploitation interrupt mode. These interrupt contollers have different interfaces for interrupt management : XICS uses hcalls and XIVE loads and stores on a page. H_EOI being a XICS interface the enable_scrq_irq() routine can fail when the machine runs in XIVE mode.

Fix that by calling the EOI handler of the interrupt chip.

---
 drivers/net/ethernet/ibm/ibmvnic.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

@@ -2731,12 +2731,10 @@ static int enable_scrq_irq(struct ibmvni
 
 	if (adapter->resetting &&
 	    adapter->reset_reason == VNIC_RESET_MOBILITY) {
-		u64 val = (0xff000000) | scrq->hw_irq;
+		struct irq_desc *desc = irq_to_desc(scrq->irq);
+		struct irq_chip *chip = irq_desc_get_chip(desc);
 
-		rc = plpar_hcall_norets(H_EOI, val);
-		if (rc)
-			dev_err(dev, "H_EOI FAILED irq 0x%llx. rc=%ld\n",
-				val, rc);
+		chip->irq_eoi(&desc->irq_data);
 	}
 
 	rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,

From: Xin Long <[email protected]>

[ Upstream commit c7a42eb49212f93a800560662d17d5293960d3c3 ]

We need a similar fix for ipv6 as Commit 0761680d5215 ("net: ipv4: fix listify ip_rcv_finish in case of forwarding") does for ipv4.

This issue can be reprocuded by syzbot since Commit 323ebb61e32b ("net:
use listified RX for handling GRO_NORMAL skbs") on net-next. The call trace was:

kernel BUG at include/linux/skbuff.h:2225!

  RIP: 0010:__skb_pull include/linux/skbuff.h:2225 [inline]
  RIP: 0010:skb_pull+0xea/0x110 net/core/skbuff.c:1902
  Call Trace:
    sctp_inq_pop+0x2f1/0xd80 net/sctp/inqueue.c:202
    sctp_endpoint_bh_rcv+0x184/0x8d0 net/sctp/endpointola.c:385
    sctp_inq_push+0x1e4/0x280 net/sctp/inqueue.c:80
    sctp_rcv+0x2807/0x3590 net/sctp/input.c:256
    sctp6_rcv+0x17/0x30 net/sctp/ipv6.c:1049
    ip6_protocol_deliver_rcu+0x2fe/0x1660 net/ipv6/ip6_input.c:397
    ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:438
    NF_HOOK include/linux/netfilter.h:305 [inline]
    NF_HOOK include/linux/netfilter.h:299 [inline]
    ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:447
    dst_input include/net/dst.h:442 [inline]
    ip6_sublist_rcv_finish+0x98/0x1e0 net/ipv6/ip6_input.c:84
    ip6_list_rcv_finish net/ipv6/ip6_input.c:118 [inline]
    ip6_sublist_rcv+0x80c/0xcf0 net/ipv6/ip6_input.c:282
    ipv6_list_rcv+0x373/0x4b0 net/ipv6/ip6_input.c:316
    __netif_receive_skb_list_ptype net/core/dev.c:5049 [inline]
    __netif_receive_skb_list_core+0x5fc/0x9d0 net/core/dev.c:5097
    __netif_receive_skb_list net/core/dev.c:5149 [inline]
    netif_receive_skb_list_internal+0x7eb/0xe60 net/core/dev.c:5244
    gro_normal_list.part.0+0x1e/0xb0 net/core/dev.c:5757
    gro_normal_list net/core/dev.c:5755 [inline]
    gro_normal_one net/core/dev.c:5769 [inline]
    napi_frags_finish net/core/dev.c:5782 [inline]
    napi_gro_frags+0xa6a/0xea0 net/core/dev.c:5855
    tun_get_user+0x2e98/0x3fa0 drivers/net/tun.c:1974
    tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2020

---
 net/ipv6/ip6_input.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

@@ -80,8 +80,10 @@ static void ip6_sublist_rcv_finish(struc
 {
 	struct sk_buff *skb, *next;
 
-	list_for_each_entry_safe(skb, next, head, list)
+	list_for_each_entry_safe(skb, next, head, list) {
+		skb_list_del_init(skb);
 		dst_input(skb);
+	}
 }
 
 static void ip6_list_rcv_finish(struct net *net, struct sock *sk,

From: Biao Huang <[email protected]>

[ Upstream commit e497c20e203680aba9ccf7bb475959595908ca7e ]

disable ptp_ref_clk in suspend flow, and enable it in resume flow.

---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

@@ -4522,8 +4522,10 @@ int stmmac_suspend(struct device *dev)
 		stmmac_mac_set(priv, priv->ioaddr, false);
 		pinctrl_pm_select_sleep_state(priv->device);
 		/* Disable clock in case of PWM is off */
-		clk_disable(priv->plat->pclk);
-		clk_disable(priv->plat->stmmac_clk);
+		if (priv->plat->clk_ptp_ref)
+			clk_disable_unprepare(priv->plat->clk_ptp_ref);
+		clk_disable_unprepare(priv->plat->pclk);
+		clk_disable_unprepare(priv->plat->stmmac_clk);
 	}
 	mutex_unlock(&priv->lock);
 

@@ -4588,8 +4590,10 @@ int stmmac_resume(struct device *dev)
 	} else {
 		pinctrl_pm_select_default_state(priv->device);
 		/* enable the clk previously disabled */
-		clk_enable(priv->plat->stmmac_clk);
-		clk_enable(priv->plat->pclk);
+		clk_prepare_enable(priv->plat->stmmac_clk);
+		clk_prepare_enable(priv->plat->pclk);
+		if (priv->plat->clk_ptp_ref)
+			clk_prepare_enable(priv->plat->clk_ptp_ref);
 		/* reset the phy so that it's ready */
 		if (priv->mii)
 			stmmac_mdio_reset(priv->mii);

From: Xin Long <[email protected]>

[ Upstream commit 63dfb7938b13fa2c2fbcb45f34d065769eb09414 ]

syzbot reported a memory leak:

  BUG: memory leak, unreferenced object 0xffff888120b3d380 (size 64):
  backtrace:

    [...] slab_alloc mm/slab.c:3319 [inline]
    [...] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [...] sctp_bucket_create net/sctp/socket.c:8523 [inline]
    [...] sctp_get_port_local+0x189/0x5a0 net/sctp/socket.c:8270
    [...] sctp_do_bind+0xcc/0x200 net/sctp/socket.c:402
    [...] sctp_bindx_add+0x4b/0xd0 net/sctp/socket.c:497
    [...] sctp_setsockopt_bindx+0x156/0x1b0 net/sctp/socket.c:1022
    [...] sctp_setsockopt net/sctp/socket.c:4641 [inline]
    [...] sctp_setsockopt+0xaea/0x2dc0 net/sctp/socket.c:4611
    [...] sock_common_setsockopt+0x38/0x50 net/core/sock.c:3147
    [...] __sys_setsockopt+0x10f/0x220 net/socket.c:2084
    [...] __do_sys_setsockopt net/socket.c:2100 [inline]

It was caused by when sending msgs without binding a port, in the path:
inet_sendmsg() -> inet_send_prepare() -> inet_autobind() -> .get_port/sctp_get_port(), sp->bind_hash will be set while bp->port is not. Later when binding another port by sctp_setsockopt_bindx(), a new bucket will be created as bp->port is not set.

sctp's autobind is supposed to call sctp_autobind() where it does all things including setting bp->port. Since sctp_autobind() is called in sctp_sendmsg() if the sk is not yet bound, it should have skipped the auto bind.

THis patch is to avoid calling inet_autobind() in inet_send_prepare() by changing sctp_prot .no_autobind with true, also remove the unused .get_port.

---
 net/sctp/socket.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -8957,7 +8957,7 @@ struct proto sctp_prot = {
 	.backlog_rcv =	sctp_backlog_rcv,
 	.hash        =	sctp_hash,
 	.unhash      =	sctp_unhash,
-	.get_port    =	sctp_get_port,
+	.no_autobind =	true,
 	.obj_size    =  sizeof(struct sctp_sock),
 	.useroffset  =  offsetof(struct sctp_sock, subscribe),
 	.usersize    =  offsetof(struct sctp_sock, initmsg) -

@@ -8999,7 +8999,7 @@ struct proto sctpv6_prot = {
 	.backlog_rcv	= sctp_backlog_rcv,
 	.hash		= sctp_hash,
 	.unhash		= sctp_unhash,
-	.get_port	= sctp_get_port,
+	.no_autobind	= true,
 	.obj_size	= sizeof(struct sctp6_sock),
 	.useroffset	= offsetof(struct sctp6_sock, sctp.subscribe),
 	.usersize	= offsetof(struct sctp6_sock, sctp.initmsg) -

From: Matthew Wilcox (Oracle) <[email protected]>

The RCU lock is insufficient to protect the radix tree iteration as a deletion from the tree can occur before we take the spinlock to tag the entry. In 4.19, this has manifested as a bug with the following trace:

kernel BUG at lib/radix-tree.c:1429!
invalid opcode: 0000 [#1] SMP KASAN PTI

CPU: 7 PID: 6935 Comm: syz-executor.2 Not tainted 4.19.36 #25
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
RIP: 0010:radix_tree_tag_set+0x200/0x2f0 lib/radix-tree.c:1429
Code: 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 89 44 24 10 e8 a3 29 7e fe 48 8b 44 24 10 48 0f ab 03 e9 d2 fe ff ff e8 90 29 7e fe <0f> 0b 48 c7 c7 e0 5a 87 84 e8 f0 e7 08 ff 4c 89 ef e8 4a ff ac fe
RSP: 0018:ffff88837b13fb60 EFLAGS: 00010016
RAX: 0000000000040000 RBX: ffff8883c5515d58 RCX: ffffffff82cb2ef0
RDX: 0000000000000b72 RSI: ffffc90004cf2000 RDI: ffff8883c5515d98
RBP: ffff88837b13fb98 R08: ffffed106f627f7e R09: ffffed106f627f7e
R10: 0000000000000001 R11: ffffed106f627f7d R12: 0000000000000004
R13: ffffea000d7fea80 R14: 1ffff1106f627f6f R15: 0000000000000002
FS:  00007fa1b8df2700(0000) GS:ffff8883e2fc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa1b8df1db8 CR3: 000000037d4d2001 CR4: 0000000000160ee0
Call Trace:
 memfd_tag_pins mm/memfd.c:51 [inline]
 memfd_wait_for_pins+0x2c5/0x12d0 mm/memfd.c:81
 memfd_add_seals mm/memfd.c:215 [inline]
 memfd_fcntl+0x33d/0x4a0 mm/memfd.c:247
 do_fcntl+0x589/0xeb0 fs/fcntl.c:421
 __do_sys_fcntl fs/fcntl.c:463 [inline]
 __se_sys_fcntl fs/fcntl.c:448 [inline]
 __x64_sys_fcntl+0x12d/0x180 fs/fcntl.c:448
 do_syscall_64+0xc8/0x580 arch/x86/entry/common.c:293

The problem does not occur in mainline due to the XArray rewrite which changed the locking to exclude modification of the tree during iteration. At the time, nobody realised this was a bugfix. Backport the locking changes to stable.

---
 mm/memfd.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

index 2bb5e257080e9..5859705dafe19 100644
@@ -34,11 +34,12 @@ static void memfd_tag_pins(struct address_space *mapping)
 	void __rcu **slot;
 	pgoff_t start;
 	struct page *page;
+	unsigned int tagged = 0;
 
 	lru_add_drain();
 	start = 0;
-	rcu_read_lock();
 
+	xa_lock_irq(&mapping->i_pages);
 	radix_tree_for_each_slot(slot, &mapping->i_pages, &iter, start) {
 		page = radix_tree_deref_slot(slot);
 		if (!page || radix_tree_exception(page)) {

@@ -47,18 +48,19 @@ static void memfd_tag_pins(struct address_space *mapping)
 				continue;
 			}
 		} else if (page_count(page) - page_mapcount(page) > 1) {
-			xa_lock_irq(&mapping->i_pages);
 			radix_tree_tag_set(&mapping->i_pages, iter.index,
 					   MEMFD_TAG_PINNED);
-			xa_unlock_irq(&mapping->i_pages);
 		}
 
-		if (need_resched()) {
-			slot = radix_tree_iter_resume(slot, &iter);
-			cond_resched_rcu();
-		}
+		if (++tagged % 1024)
+			continue;
+
+		slot = radix_tree_iter_resume(slot, &iter);
+		xa_unlock_irq(&mapping->i_pages);
+		cond_resched();
+		xa_lock_irq(&mapping->i_pages);
 	}
-	rcu_read_unlock();
+	xa_unlock_irq(&mapping->i_pages);
 }
 
 /*

2.20.1

From: Johan Hovold <[email protected]>

commit b6c03e5f7b463efcafd1ce141bd5a8fc4e583ae2 upstream.

If disconnect() races with release() after a process has been interrupted, release() could end up returning early and the driver would fail to free its driver data.

---
 drivers/usb/misc/legousbtower.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

@@ -419,10 +419,7 @@ static int tower_release (struct inode *
 		goto exit;
 	}
 
-	if (mutex_lock_interruptible(&dev->lock)) {
-	        retval = -ERESTARTSYS;
-		goto exit;
-	}
+	mutex_lock(&dev->lock);
 
 	if (dev->open_count != 1) {
 		dev_dbg(&dev->udev->dev, "%s: device not opened exactly once\n",

From: Kailang Yang <[email protected]>

commit 83629532ce45ef9df1f297b419b9ea112045685d upstream.

Support new codec ALC711.

---
 sound/pci/hda/patch_realtek.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -405,6 +405,7 @@ static void alc_fill_eapd_coef(struct hd
 	case 0x10ec0700:
 	case 0x10ec0701:
 	case 0x10ec0703:
+	case 0x10ec0711:
 		alc_update_coef_idx(codec, 0x10, 1<<15, 0);
 		break;
 	case 0x10ec0662:

@@ -7752,6 +7753,7 @@ static int patch_alc269(struct hda_codec
 	case 0x10ec0700:
 	case 0x10ec0701:
 	case 0x10ec0703:
+	case 0x10ec0711:
 		spec->codec_variant = ALC269_TYPE_ALC700;
 		spec->gen.mixer_nid = 0; /* ALC700 does not have any loopback mixer path */
 		alc_update_coef_idx(codec, 0x4a, 1 << 15, 0); /* Combo jack auto trigger control */

@@ -8883,6 +8885,7 @@ static const struct hda_device_id snd_hd
 	HDA_CODEC_ENTRY(0x10ec0700, "ALC700", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0701, "ALC701", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0703, "ALC703", patch_alc269),
+	HDA_CODEC_ENTRY(0x10ec0711, "ALC711", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0867, "ALC891", patch_alc662),
 	HDA_CODEC_ENTRY(0x10ec0880, "ALC880", patch_alc880),
 	HDA_CODEC_ENTRY(0x10ec0882, "ALC882", patch_alc882),

From: Daniel Drake <[email protected]>

commit 8c8967a7dc01a25f57a0757fdca10987773cd1f2 upstream.

On Asus MJ401TA (with Realtek ALC256), the headset mic is connected to pin 0x19, with default configuration value 0x411111f0 (indicating no physical connection).

Enable this by quirking the pin. Mic jack detection was also tested and found to be working.

This enables use of the headset mic on this product.

---
 sound/pci/hda/patch_realtek.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

@@ -5677,6 +5677,7 @@ enum {
 	ALC225_FIXUP_WYSE_AUTO_MUTE,
 	ALC225_FIXUP_WYSE_DISABLE_MIC_VREF,
 	ALC286_FIXUP_ACER_AIO_HEADSET_MIC,
+	ALC256_FIXUP_ASUS_HEADSET_MIC,
 	ALC256_FIXUP_ASUS_MIC_NO_PRESENCE,
 	ALC299_FIXUP_PREDATOR_SPK,
 	ALC294_FIXUP_ASUS_INTSPK_HEADSET_MIC,

@@ -6693,6 +6694,15 @@ static const struct hda_fixup alc269_fix
 		.chained = true,
 		.chain_id = ALC286_FIXUP_ACER_AIO_MIC_NO_PRESENCE
 	},
+	[ALC256_FIXUP_ASUS_HEADSET_MIC] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x19, 0x03a11020 }, /* headset mic with jack detect */
+			{ }
+		},
+		.chained = true,
+		.chain_id = ALC256_FIXUP_ASUS_HEADSET_MODE
+	},
 	[ALC256_FIXUP_ASUS_MIC_NO_PRESENCE] = {
 		.type = HDA_FIXUP_PINS,
 		.v.pins = (const struct hda_pintbl[]) {

@@ -6889,6 +6899,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x1043, 0x1517, "Asus Zenbook UX31A", ALC269VB_FIXUP_ASUS_ZENBOOK_UX31A),
 	SND_PCI_QUIRK(0x1043, 0x16e3, "ASUS UX50", ALC269_FIXUP_STEREO_DMIC),
 	SND_PCI_QUIRK(0x1043, 0x17d1, "ASUS UX431FL", ALC294_FIXUP_ASUS_INTSPK_HEADSET_MIC),
+	SND_PCI_QUIRK(0x1043, 0x18b1, "Asus MJ401TA", ALC256_FIXUP_ASUS_HEADSET_MIC),
 	SND_PCI_QUIRK(0x1043, 0x1a13, "Asus G73Jw", ALC269_FIXUP_ASUS_G73JW),
 	SND_PCI_QUIRK(0x1043, 0x1a30, "ASUS X705UD", ALC256_FIXUP_ASUS_MIC),
 	SND_PCI_QUIRK(0x1043, 0x1b13, "Asus U41SV", ALC269_FIXUP_INV_DMIC),

From: Szabolcs Szőke <[email protected]>

commit 7571b6a17fcc5e4f6903f065a82d0e38011346ed upstream.

BOSS Katana amplifiers cannot be used for recording or playback if quirks are applied

---
 sound/usb/pcm.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -355,6 +355,9 @@ static int set_sync_ep_implicit_fb_quirk
 		ep = 0x81;
 		ifnum = 1;
 		goto add_sync_ep_from_ifnum;
+	case USB_ID(0x0582, 0x01d8): /* BOSS Katana */
+		/* BOSS Katana amplifiers do not need quirks */
+		return 0;
 	}
 
 	if (attr == USB_ENDPOINT_SYNC_ASYNC &&

From: Lukas Wunner <[email protected]>

commit 94989e318b2f11e217e86bee058088064fa9a2e9 upstream.

Przemysław Kopa reports that since commit b516ea586d71 ("PCI: Enable NVIDIA HDA controllers"), the discrete GPU Nvidia GeForce GT 540M on his 2011 Samsung laptop refuses to runtime suspend, resulting in a power regression and excessive heat.

Rivera Valdez witnesses the same issue with a GeForce GT 525M (GF108M) of the same era, as does another Arch Linux user named "R0AR" with a more recent GeForce GTX 1050 Ti (GP107M).

The commit exposes the discrete GPU's HDA controller and all four codecs on the controller do not set the CLKSTOP and EPSS bits in the Supported Power States Response. They also do not set the PS-ClkStopOk bit in the Get Power State Response. hda_codec_runtime_suspend() therefore does not call snd_hdac_codec_link_down(), which prevents each codec and the PCI device from runtime suspending.

The same issue is present on some AMD discrete GPUs and we addressed it by forcing runtime PM despite the bits not being set, see commit 57cb54e53bdd ("ALSA: hda - Force to link down at runtime suspend on ATI/AMD HDMI").

Do the same for Nvidia HDMI codecs.

---
 sound/pci/hda/patch_hdmi.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -3264,6 +3264,8 @@ static int patch_nvhdmi(struct hda_codec
 		nvhdmi_chmap_cea_alloc_validate_get_type;
 	spec->chmap.ops.chmap_validate = nvhdmi_chmap_validate;
 
+	codec->link_down_at_suspend = 1;
+
 	return 0;
 }
 

From: Gustavo A. R. Silva <[email protected]>

commit b987b66ac3a2bc2f7b03a0ba48a07dc553100c07 upstream.

It seems that the right variable to use in this case is *i*, instead of *n*, otherwise there is an undefined behavior when right shifiting by more than 31 bits when multiplying n by 8; notice that *n* can take values equal or greater than 4 (4, 8, 16, ...).

Also, notice that under the current conditions (bl = 3), we are skiping the handling of bytes 3, 7, 31... So, fix this by updating this logic and limit *bl* up to 4 instead of up to 3.

This fix is based on function udc_stuff_fifo().

Addresses-Coverity-ID: 1454834 ("Bad bit shift operation")

---
 drivers/usb/gadget/udc/lpc32xx_udc.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

@@ -1165,11 +1165,11 @@ static void udc_pop_fifo(struct lpc32xx_
 			tmp = readl(USBD_RXDATA(udc->udp_baseaddr));
 
 			bl = bytes - n;
-			if (bl > 3)
-				bl = 3;
+			if (bl > 4)
+				bl = 4;
 
 			for (i = 0; i < bl; i++)
-				data[n + i] = (u8) ((tmp >> (n * 8)) & 0xFF);
+				data[n + i] = (u8) ((tmp >> (i * 8)) & 0xFF);
 		}
 		break;
 

From: Johan Hovold <[email protected]>

commit 6f1d1dc8d540a9aa6e39b9cb86d3a67bbc1c8d8d upstream.

Fix races between closing a port and opening or closing another port on the same device which could lead to a failure to start or stop the shared interrupt URB. The latter could potentially cause a use-after-free or worse in the completion handler on driver unbind.

---
 drivers/usb/serial/ti_usb_3410_5052.c |   10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

@@ -776,7 +776,6 @@ static void ti_close(struct usb_serial_p
 	struct ti_port *tport;
 	int port_number;
 	int status;
-	int do_unlock;
 	unsigned long flags;
 
 	tdev = usb_get_serial_data(port->serial);

@@ -800,16 +799,13 @@ static void ti_close(struct usb_serial_p
 			"%s - cannot send close port command, %d\n"
 							, __func__, status);
 
-	/* if mutex_lock is interrupted, continue anyway */
-	do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
+	mutex_lock(&tdev->td_open_close_lock);
 	--tport->tp_tdev->td_open_port_count;
-	if (tport->tp_tdev->td_open_port_count <= 0) {
+	if (tport->tp_tdev->td_open_port_count == 0) {
 		/* last port is closed, shut down interrupt urb */
 		usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
-		tport->tp_tdev->td_open_port_count = 0;
 	}
-	if (do_unlock)
-		mutex_unlock(&tdev->td_open_close_lock);
+	mutex_unlock(&tdev->td_open_close_lock);
 }
 
 

From: Johan Hovold <[email protected]>

commit b14a39048c1156cfee76228bf449852da2f14df8 upstream.

If disconnect() races with release() after a process has been interrupted, release() could end up returning early and the driver would fail to free its driver data.

---
 drivers/usb/misc/ldusb.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

@@ -380,10 +380,7 @@ static int ld_usb_release(struct inode *
 		goto exit;
 	}
 
-	if (mutex_lock_interruptible(&dev->mutex)) {
-		retval = -ERESTARTSYS;
-		goto exit;
-	}
+	mutex_lock(&dev->mutex);
 
 	if (dev->open_count != 1) {
 		retval = -ENODEV;

From: Johan Hovold <[email protected]>

commit 7a759197974894213621aa65f0571b51904733d6 upstream.

A recent commit addressing a runtime PM use-count regression, introduced a use-after-free by not making sure we held a reference to the struct usb_interface for the lifetime of the driver data.

---
 drivers/usb/class/usblp.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

@@ -445,6 +445,7 @@ static void usblp_cleanup(struct usblp *
 	kfree(usblp->readbuf);
 	kfree(usblp->device_id_string);
 	kfree(usblp->statusbuf);
+	usb_put_intf(usblp->intf);
 	kfree(usblp);
 }
 

@@ -1107,7 +1108,7 @@ static int usblp_probe(struct usb_interf
 	init_waitqueue_head(&usblp->wwait);
 	init_usb_anchor(&usblp->urbs);
 	usblp->ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
-	usblp->intf = intf;
+	usblp->intf = usb_get_intf(intf);
 
 	/* Malloc device ID string buffer to the largest expected length,
 	 * since we can re-query it on an ioctl and a dynamic string

@@ -1196,6 +1197,7 @@ abort:
 	kfree(usblp->readbuf);
 	kfree(usblp->statusbuf);
 	kfree(usblp->device_id_string);
+	usb_put_intf(usblp->intf);
 	kfree(usblp);
 abort_ret:
 	return retval;

From: Johan Hovold <[email protected]>

commit 7a6f22d7479b7a0b68eadd308a997dd64dda7dae upstream.

Fix broken read implementation, which could be used to trigger slab info leaks.

The driver failed to check if the custom ring buffer was still empty when waking up after having waited for more data. This would happen on every interrupt-in completion, even if no data had been added to the ring buffer (e.g. on disconnect events).

Due to missing sanity checks and uninitialised (kmalloced) ring-buffer entries, this meant that huge slab info leaks could easily be triggered.

Note that the empty-buffer check after wakeup is enough to fix the info leak on disconnect, but let's clear the buffer on allocation and add a sanity check to read() to prevent further leaks.

---
 drivers/usb/misc/ldusb.c |   18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

@@ -464,7 +464,7 @@ static ssize_t ld_usb_read(struct file *
 
 	/* wait for data */
 	spin_lock_irq(&dev->rbsl);
-	if (dev->ring_head == dev->ring_tail) {
+	while (dev->ring_head == dev->ring_tail) {
 		dev->interrupt_in_done = 0;
 		spin_unlock_irq(&dev->rbsl);
 		if (file->f_flags & O_NONBLOCK) {

@@ -474,12 +474,17 @@ static ssize_t ld_usb_read(struct file *
 		retval = wait_event_interruptible(dev->read_wait, dev->interrupt_in_done);
 		if (retval < 0)
 			goto unlock_exit;
-	} else {
-		spin_unlock_irq(&dev->rbsl);
+
+		spin_lock_irq(&dev->rbsl);
 	}
+	spin_unlock_irq(&dev->rbsl);
 
 	/* actual_buffer contains actual_length + interrupt_in_buffer */
 	actual_buffer = (size_t *)(dev->ring_buffer + dev->ring_tail * (sizeof(size_t)+dev->interrupt_in_endpoint_size));
+	if (*actual_buffer > dev->interrupt_in_endpoint_size) {
+		retval = -EIO;
+		goto unlock_exit;
+	}
 	bytes_to_read = min(count, *actual_buffer);
 	if (bytes_to_read < *actual_buffer)
 		dev_warn(&dev->intf->dev, "Read buffer overflow, %zd bytes dropped\n",

@@ -690,10 +695,9 @@ static int ld_usb_probe(struct usb_inter
 		dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n");
 
 	dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint);
-	dev->ring_buffer =
-		kmalloc_array(ring_buffer_size,
-			      sizeof(size_t) + dev->interrupt_in_endpoint_size,
-			      GFP_KERNEL);
+	dev->ring_buffer = kcalloc(ring_buffer_size,
+			sizeof(size_t) + dev->interrupt_in_endpoint_size,
+			GFP_KERNEL);
 	if (!dev->ring_buffer)
 		goto error;
 	dev->interrupt_in_buffer = kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL);

From: Paul Burton <[email protected]>

commit b42aa3fd5957e4daf4b69129e5ce752a2a53e7d6 upstream.

build_restore_pagemask() will restore the value of register $1/$at when its restore_scratch argument is non-zero, and aims to do so by filling a branch delay slot. Commit 0b24cae4d535 ("MIPS: Add missing EHB in mtc0 -> mfc0 sequence.") added an EHB instruction (Execution Hazard Barrier) prior to restoring $1 from a KScratch register, in order to resolve a hazard that can result in stale values of the KScratch register being observed. In particular, P-class CPUs from MIPS with out of order execution pipelines such as the P5600 & P6600 are affected.

Unfortunately this EHB instruction was inserted in the branch delay slot causing the MFC0 instruction which performs the restoration to no longer execute along with the branch. The result is that the $1 register isn't actually restored, ie. the TLB refill exception handler clobbers it - which is exactly the problem the EHB is meant to avoid for the P-class CPUs.

Similarly build_get_pgd_vmalloc() will restore the value of $1/$at when its mode argument equals refill_scratch, and suffers from the same problem.

Fix this by in both cases moving the EHB earlier in the emitted code. There's no reason it needs to immediately precede the MFC0 - it simply needs to be between the MTC0 & MFC0.

This bug only affects Cavium Octeon systems which use build_fast_tlb_refill_handler().

---
 arch/mips/mm/tlbex.c |   23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

@@ -654,6 +654,13 @@ static void build_restore_pagemask(u32 *
 				   int restore_scratch)
 {
 	if (restore_scratch) {
+		/*
+		 * Ensure the MFC0 below observes the value written to the
+		 * KScratch register by the prior MTC0.
+		 */
+		if (scratch_reg >= 0)
+			uasm_i_ehb(p);
+
 		/* Reset default page size */
 		if (PM_DEFAULT_MASK >> 16) {
 			uasm_i_lui(p, tmp, PM_DEFAULT_MASK >> 16);

@@ -668,12 +675,10 @@ static void build_restore_pagemask(u32 *
 			uasm_i_mtc0(p, 0, C0_PAGEMASK);
 			uasm_il_b(p, r, lid);
 		}
-		if (scratch_reg >= 0) {
-			uasm_i_ehb(p);
+		if (scratch_reg >= 0)
 			UASM_i_MFC0(p, 1, c0_kscratch(), scratch_reg);
-		} else {
+		else
 			UASM_i_LW(p, 1, scratchpad_offset(0), 0);
-		}
 	} else {
 		/* Reset default page size */
 		if (PM_DEFAULT_MASK >> 16) {

@@ -922,6 +927,10 @@ build_get_pgd_vmalloc64(u32 **p, struct
 	}
 	if (mode != not_refill && check_for_high_segbits) {
 		uasm_l_large_segbits_fault(l, *p);
+
+		if (mode == refill_scratch && scratch_reg >= 0)
+			uasm_i_ehb(p);
+
 		/*
 		 * We get here if we are an xsseg address, or if we are
 		 * an xuseg address above (PGDIR_SHIFT+PGDIR_BITS) boundary.

@@ -938,12 +947,10 @@ build_get_pgd_vmalloc64(u32 **p, struct
 		uasm_i_jr(p, ptr);
 
 		if (mode == refill_scratch) {
-			if (scratch_reg >= 0) {
-				uasm_i_ehb(p);
+			if (scratch_reg >= 0)
 				UASM_i_MFC0(p, 1, c0_kscratch(), scratch_reg);
-			} else {
+			else
 				UASM_i_LW(p, 1, scratchpad_offset(0), 0);
-			}
 		} else {
 			uasm_i_nop(p);
 		}

From: Colin Ian King <[email protected]>

commit 153c5d8191c26165dbbd2646448ca7207f7796d0 upstream.

Currently the exit return path when sme->key_idx >= NUM_WEPKEYS is via label 'exit' and this checks if result is non-zero, however result has not been initialized and contains garbage. Fix this by replacing the goto with a return with the error code.

Addresses-Coverity: ("Uninitialized scalar variable")

---
 drivers/staging/wlan-ng/cfg80211.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

@@ -476,10 +476,8 @@ static int prism2_connect(struct wiphy *
 	/* Set the encryption - we only support wep */
 	if (is_wep) {
 		if (sme->key) {
-			if (sme->key_idx >= NUM_WEPKEYS) {
-				err = -EINVAL;
-				goto exit;
-			}
+			if (sme->key_idx >= NUM_WEPKEYS)
+				return -EINVAL;
 
 			result = prism2_domibset_uint32(wlandev,
 				DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,

From: Steffen Maier <[email protected]>

commit 2190168aaea42c31bff7b9a967e7b045f07df095 upstream.

On excessive bit errors for the FCP channel ingress fibre path, the channel notifies us. Previously, we only emitted a kernel message and a trace record. Since performance can become suboptimal with I/O timeouts due to bit errors, we now stop using an FCP device by default on channel notification so multipath on top can timely failover to other paths. A new module parameter zfcp.ber_stop can be used to get zfcp old behavior.

User explanation of new kernel message:

* Description:
* The FCP channel reported that its bit error threshold has been exceeded.
* These errors might result from a problem with the physical components
* of the local fibre link into the FCP channel.
* The problem might be damage or malfunction of the cable or
* cable connection between the FCP channel and
* the adjacent fabric switch port or the point-to-point peer.
* Find details about the errors in the HBA trace for the FCP device.
* The zfcp device driver closed down the FCP device
* to limit the performance impact from possible I/O command timeouts.
* User action:
* Check for problems on the local fibre link, ensure that fibre optics are
* clean and functional, and all cables are properly plugged.
* After the repair action, you can manually recover the FCP device by
* writing "0" into its "failed" sysfs attribute.
* If recovery through sysfs is not possible, set the CHPID of the device
* offline and back online on the service element.

---
 drivers/s390/scsi/zfcp_fsf.c |   16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

@@ -21,6 +21,11 @@
 
 struct kmem_cache *zfcp_fsf_qtcb_cache;
 
+static bool ber_stop = true;
+module_param(ber_stop, bool, 0600);
+MODULE_PARM_DESC(ber_stop,
+		 "Shuts down FCP devices for FCP channels that report a bit-error count in excess of its threshold (default on)");
+
 static void zfcp_fsf_request_timeout_handler(struct timer_list *t)
 {
 	struct zfcp_fsf_req *fsf_req = from_timer(fsf_req, t, timer);

@@ -230,10 +235,15 @@ static void zfcp_fsf_status_read_handler
 	case FSF_STATUS_READ_SENSE_DATA_AVAIL:
 		break;
 	case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
-		dev_warn(&adapter->ccw_device->dev,
-			 "The error threshold for checksum statistics "
-			 "has been exceeded\n");
 		zfcp_dbf_hba_bit_err("fssrh_3", req);
+		if (ber_stop) {
+			dev_warn(&adapter->ccw_device->dev,
+				 "All paths over this FCP device are disused because of excessive bit errors\n");
+			zfcp_erp_adapter_shutdown(adapter, 0, "fssrh_b");
+		} else {
+			dev_warn(&adapter->ccw_device->dev,
+				 "The error threshold for checksum statistics has been exceeded\n");
+		}
 		break;
 	case FSF_STATUS_READ_LINK_DOWN:
 		zfcp_fsf_status_read_link_down(req);

From: Oliver Neukum <[email protected]>

commit 21e3d6c81179bbdfa279efc8de456c34b814cfd2 upstream.

I've got a report about a UAS drive enclosure reporting back Sense: Logical unit access not authorized if the drive it holds is password protected. While the drive is obviously unusable in that state as a mass storage device, it still exists as a sd device and when the system is asked to perform a suspend of the drive, it will be sent a SYNCHRONIZE CACHE. If that fails due to password protection, the error must be ignored.

---
 drivers/scsi/sd.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

@@ -1646,7 +1646,8 @@ static int sd_sync_cache(struct scsi_dis
 		/* we need to evaluate the error return  */
 		if (scsi_sense_valid(sshdr) &&
 			(sshdr->asc == 0x3a ||	/* medium not present */
-			 sshdr->asc == 0x20))	/* invalid command */
+			 sshdr->asc == 0x20 ||	/* invalid command */
+			 (sshdr->asc == 0x74 && sshdr->ascq == 0x71)))	/* drive is password locked */
 				/* this is no error here */
 				return 0;
 

From: Damien Le Moal <[email protected]>

commit 8f8fed0cdbbd6cdbf28d9ebe662f45765d2f7d39 upstream.

When a non-passthrough command is terminated with CHECK CONDITION, request sense is executed by hijacking the command descriptor. Since scsi_eh_prep_cmnd() and scsi_eh_restore_cmnd() do not save/restore the original command resid, the value returned on failure of the original command is lost and replaced with the value set by the execution of the request sense command. This value may in many instances be unaligned to the device sector size, causing sd_done() to print a warning message about the incorrect unaligned resid before the command is retried.

Fix this problem by saving the original command residual in struct scsi_eh_save using scsi_eh_prep_cmnd() and restoring it in scsi_eh_restore_cmnd(). In addition, to make sure that the request sense command is executed with a correctly initialized command structure, also reset the residual to 0 in scsi_eh_prep_cmnd() after saving the original command value in struct scsi_eh_save.

---
 drivers/scsi/scsi_error.c |    3 +++
 include/scsi/scsi_eh.h    |    1 +
 2 files changed, 4 insertions(+)

@@ -970,6 +970,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd
 	ses->sdb = scmd->sdb;
 	ses->next_rq = scmd->request->next_rq;
 	ses->result = scmd->result;
+	ses->resid_len = scmd->req.resid_len;
 	ses->underflow = scmd->underflow;
 	ses->prot_op = scmd->prot_op;
 	ses->eh_eflags = scmd->eh_eflags;

@@ -981,6 +982,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd
 	memset(&scmd->sdb, 0, sizeof(scmd->sdb));
 	scmd->request->next_rq = NULL;
 	scmd->result = 0;
+	scmd->req.resid_len = 0;
 
 	if (sense_bytes) {
 		scmd->sdb.length = min_t(unsigned, SCSI_SENSE_BUFFERSIZE,

@@ -1034,6 +1036,7 @@ void scsi_eh_restore_cmnd(struct scsi_cm
 	scmd->sdb = ses->sdb;
 	scmd->request->next_rq = ses->next_rq;
 	scmd->result = ses->result;
+	scmd->req.resid_len = ses->resid_len;
 	scmd->underflow = ses->underflow;
 	scmd->prot_op = ses->prot_op;
 	scmd->eh_eflags = ses->eh_eflags;

@@ -32,6 +32,7 @@ extern int scsi_ioctl_reset(struct scsi_
 struct scsi_eh_save {
 	/* saved state */
 	int result;
+	unsigned int resid_len;
 	int eh_eflags;
 	enum dma_data_direction data_direction;
 	unsigned underflow;

From: Yufen Yu <[email protected]>

commit 77c301287ebae86cc71d03eb3806f271cb14da79 upstream.

We have a test case like block/001 in blktests, which will create a scsi device by loading scsi_debug module and then try to delete the device by sysfs interface. At the same time, it may remove the scsi_debug module.

And getting a invalid paging request BUG_ON as following:

[   34.625854] BUG: unable to handle page fault for address: ffffffffa0016bb8
[   34.629189] Oops: 0000 [#1] SMP PTI
[   34.629618] CPU: 1 PID: 450 Comm: bash Tainted: G        W         5.4.0-rc3+ #473
[   34.632524] RIP: 0010:scsi_proc_hostdir_rm+0x5/0xa0
[   34.643555] CR2: ffffffffa0016bb8 CR3: 000000012cd88000 CR4: 00000000000006e0
[   34.644545] Call Trace:
[   34.644907]  scsi_host_dev_release+0x6b/0x1f0
[   34.645511]  device_release+0x74/0x110
[   34.646046]  kobject_put+0x116/0x390
[   34.646559]  put_device+0x17/0x30
[   34.647041]  scsi_target_dev_release+0x2b/0x40
[   34.647652]  device_release+0x74/0x110
[   34.648186]  kobject_put+0x116/0x390
[   34.648691]  put_device+0x17/0x30
[   34.649157]  scsi_device_dev_release_usercontext+0x2e8/0x360
[   34.649953]  execute_in_process_context+0x29/0x80
[   34.650603]  scsi_device_dev_release+0x20/0x30
[   34.651221]  device_release+0x74/0x110
[   34.651732]  kobject_put+0x116/0x390
[   34.652230]  sysfs_unbreak_active_protection+0x3f/0x50
[   34.652935]  sdev_store_delete.cold.4+0x71/0x8f
[   34.653579]  dev_attr_store+0x1b/0x40
[   34.654103]  sysfs_kf_write+0x3d/0x60
[   34.654603]  kernfs_fop_write+0x174/0x250
[   34.655165]  __vfs_write+0x1f/0x60
[   34.655639]  vfs_write+0xc7/0x280
[   34.656117]  ksys_write+0x6d/0x140
[   34.656591]  __x64_sys_write+0x1e/0x30
[   34.657114]  do_syscall_64+0xb1/0x400
[   34.657627]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   34.658335] RIP: 0033:0x7f156f337130

During deleting scsi target, the scsi_debug module have been removed. Then, sdebug_driver_template belonged to the module cannot be accessd, resulting in scsi_proc_hostdir_rm() BUG_ON.

To fix the bug, we add scsi_device_get() in sdev_store_delete() to try to increase refcount of module, avoiding the module been removed.

---
 drivers/scsi/scsi_sysfs.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

@@ -723,6 +723,14 @@ sdev_store_delete(struct device *dev, st
 		  const char *buf, size_t count)
 {
 	struct kernfs_node *kn;
+	struct scsi_device *sdev = to_scsi_device(dev);
+
+	/*
+	 * We need to try to get module, avoiding the module been removed
+	 * during delete.
+	 */
+	if (scsi_device_get(sdev))
+		return -ENODEV;
 
 	kn = sysfs_break_active_protection(&dev->kobj, &attr->attr);
 	WARN_ON_ONCE(!kn);

@@ -737,9 +745,10 @@ sdev_store_delete(struct device *dev, st
 	 * state into SDEV_DEL.
 	 */
 	device_remove_file(dev, attr);
-	scsi_remove_device(to_scsi_device(dev));
+	scsi_remove_device(sdev);
 	if (kn)
 		sysfs_unbreak_active_protection(kn);
+	scsi_device_put(sdev);
 	return count;
 };
 static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);

From: Bart Van Assche <[email protected]>

commit 6a0990eaa768dfb7064f06777743acc6d392084b upstream.

Clearing ch->device in ch_release() is wrong because that pointer must remain valid until ch_remove() is called. This patch fixes the following crash the second time a ch device is opened:

BUG: kernel NULL pointer dereference, address: 0000000000000790
RIP: 0010:scsi_device_get+0x5/0x60
Call Trace:
 ch_open+0x4c/0xa0 [ch]
 chrdev_open+0xa2/0x1c0
 do_dentry_open+0x13a/0x380
 path_openat+0x591/0x1470
 do_filp_open+0x91/0x100
 do_sys_open+0x184/0x220
 do_syscall_64+0x5f/0x1a0
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

---
 drivers/scsi/ch.c |    1 -
 1 file changed, 1 deletion(-)

@@ -578,7 +578,6 @@ ch_release(struct inode *inode, struct f
 	scsi_changer *ch = file->private_data;
 
 	scsi_device_put(ch->device);
-	ch->device = NULL;
 	file->private_data = NULL;
 	kref_put(&ch->ref, ch_destroy);
 	return 0;

From: Marco Felsch <[email protected]>

commit afce285b859cea91c182015fc9858ea58c26cd0e upstream.

Since commit f889beaaab1c ("Input: da9063 - report KEY_POWER instead of KEY_SLEEP during power key-press") KEY_SLEEP isn't supported anymore. This caused input device to not generate any events if "dlg,disable-key-power" is set.

Fix this by unconditionally setting KEY_POWER capability, and not declaring KEY_SLEEP.

---
 drivers/input/misc/da9063_onkey.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

@@ -248,10 +248,7 @@ static int da9063_onkey_probe(struct pla
 	onkey->input->phys = onkey->phys;
 	onkey->input->dev.parent = &pdev->dev;
 
-	if (onkey->key_power)
-		input_set_capability(onkey->input, EV_KEY, KEY_POWER);
-
-	input_set_capability(onkey->input, EV_KEY, KEY_SLEEP);
+	input_set_capability(onkey->input, EV_KEY, KEY_POWER);
 
 	INIT_DELAYED_WORK(&onkey->work, da9063_poll_on);
 

From: Evan Green <[email protected]>

commit 363c53875aef8fce69d4a2d0873919ccc7d9e2ad upstream.

rmi_process_interrupt_requests() calls handle_nested_irq() for each interrupt status bit it finds. If the irq domain mapping for this bit had not yet been set up, then it ends up calling handle_nested_irq(0), which causes a NULL pointer dereference.

There's already code that masks the irq_status bits coming out of the hardware with current_irq_mask, presumably to avoid this situation. However current_irq_mask seems to more reflect the actual mask set in the hardware rather than the IRQs software has set up and registered for. For example, in rmi_driver_reset_handler(), the current_irq_mask is initialized based on what is read from the hardware. If the reset value of this mask enables IRQs that Linux has not set up yet, then we end up in this situation.

There appears to be a third unused bitmask that used to serve this purpose, fn_irq_bits. Use that bitmask instead of current_irq_mask to avoid calling handle_nested_irq() on IRQs that have not yet been set up.

---
 drivers/input/rmi4/rmi_driver.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

@@ -149,7 +149,7 @@ static int rmi_process_interrupt_request
 	}
 
 	mutex_lock(&data->irq_mutex);
-	bitmap_and(data->irq_status, data->irq_status, data->current_irq_mask,
+	bitmap_and(data->irq_status, data->irq_status, data->fn_irq_bits,
 	       data->irq_count);
 	/*
 	 * At this point, irq_status has all bits that are set in the

@@ -388,6 +388,8 @@ static int rmi_driver_set_irq_bits(struc
 	bitmap_copy(data->current_irq_mask, data->new_irq_mask,
 		    data->num_of_irq_regs);
 
+	bitmap_or(data->fn_irq_bits, data->fn_irq_bits, mask, data->irq_count);
+
 error_unlock:
 	mutex_unlock(&data->irq_mutex);
 	return error;

@@ -401,6 +403,8 @@ static int rmi_driver_clear_irq_bits(str
 	struct device *dev = &rmi_dev->dev;
 
 	mutex_lock(&data->irq_mutex);
+	bitmap_andnot(data->fn_irq_bits,
+		      data->fn_irq_bits, mask, data->irq_count);
 	bitmap_andnot(data->new_irq_mask,
 		  data->current_irq_mask, mask, data->irq_count);
 

From: Junya Monden <[email protected]>

commit 22e58665a01006d05f0239621f7d41cacca96cc4 upstream.

Unlike other format-related DAI parameters, rdai->bit_clk_inv flag is not properly re-initialized when setting format for new stream processing. The inversion, if requested, is then applied not to default, but to a previous value, which leads to SCKP bit in SSICR register being set incorrectly.
Fix this by re-setting the flag to its initial value, determined by format.

---
 sound/soc/sh/rcar/core.c |    1 +
 1 file changed, 1 insertion(+)

@@ -674,6 +674,7 @@ static int rsnd_soc_dai_set_fmt(struct s
 	}
 
 	/* set format */
+	rdai->bit_clk_inv = 0;
 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_I2S:
 		rdai->sys_delay = 0;

From: John Garry <[email protected]>

commit 56a0b978d42f58c7e3ba715cf65af487d427524d upstream.

When enabling KASAN and DEBUG_TEST_DRIVER_REMOVE, I find this KASAN warning:

[   20.872057] BUG: KASAN: use-after-free in pcc_data_alloc+0x40/0xb8
[   20.878226] Read of size 4 at addr ffff00236cdeb684 by task swapper/0/1
[   20.884826]
[   20.886309] CPU: 19 PID: 1 Comm: swapper/0 Not tainted 5.4.0-rc1-00009-ge7f7df3db5bf-dirty #289
[   20.894994] Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI RC0 - V1.16.01 03/15/2019
[   20.903505] Call trace:
[   20.905942]  dump_backtrace+0x0/0x200
[   20.909593]  show_stack+0x14/0x20
[   20.912899]  dump_stack+0xd4/0x130
[   20.916291]  print_address_description.isra.9+0x6c/0x3b8
[   20.921592]  __kasan_report+0x12c/0x23c
[   20.925417]  kasan_report+0xc/0x18
[   20.928808]  __asan_load4+0x94/0xb8
[   20.932286]  pcc_data_alloc+0x40/0xb8
[   20.935938]  acpi_cppc_processor_probe+0x4e8/0xb08
[   20.940717]  __acpi_processor_start+0x48/0xb0
[   20.945062]  acpi_processor_start+0x40/0x60
[   20.949235]  really_probe+0x118/0x548
[   20.952887]  driver_probe_device+0x7c/0x148
[   20.957059]  device_driver_attach+0x94/0xa0
[   20.961231]  __driver_attach+0xa4/0x110
[   20.965055]  bus_for_each_dev+0xe8/0x158
[   20.968966]  driver_attach+0x30/0x40
[   20.972531]  bus_add_driver+0x234/0x2f0
[   20.976356]  driver_register+0xbc/0x1d0
[   20.980182]  acpi_processor_driver_init+0x40/0xe4
[   20.984875]  do_one_initcall+0xb4/0x254
[   20.988700]  kernel_init_freeable+0x24c/0x2f8
[   20.993047]  kernel_init+0x10/0x118
[   20.996524]  ret_from_fork+0x10/0x18
[   21.000087]
[   21.001567] Allocated by task 1:
[   21.004785]  save_stack+0x28/0xc8
[   21.008089]  __kasan_kmalloc.isra.9+0xbc/0xd8
[   21.012435]  kasan_kmalloc+0xc/0x18
[   21.015913]  pcc_data_alloc+0x94/0xb8
[   21.019564]  acpi_cppc_processor_probe+0x4e8/0xb08
[   21.024343]  __acpi_processor_start+0x48/0xb0
[   21.028689]  acpi_processor_start+0x40/0x60
[   21.032860]  really_probe+0x118/0x548
[   21.036512]  driver_probe_device+0x7c/0x148
[   21.040684]  device_driver_attach+0x94/0xa0
[   21.044855]  __driver_attach+0xa4/0x110
[   21.048680]  bus_for_each_dev+0xe8/0x158
[   21.052591]  driver_attach+0x30/0x40
[   21.056155]  bus_add_driver+0x234/0x2f0
[   21.059980]  driver_register+0xbc/0x1d0
[   21.063805]  acpi_processor_driver_init+0x40/0xe4
[   21.068497]  do_one_initcall+0xb4/0x254
[   21.072322]  kernel_init_freeable+0x24c/0x2f8
[   21.076667]  kernel_init+0x10/0x118
[   21.080144]  ret_from_fork+0x10/0x18
[   21.083707]
[   21.085186] Freed by task 1:
[   21.088056]  save_stack+0x28/0xc8
[   21.091360]  __kasan_slab_free+0x118/0x180
[   21.095445]  kasan_slab_free+0x10/0x18
[   21.099183]  kfree+0x80/0x268
[   21.102139]  acpi_cppc_processor_exit+0x1a8/0x1b8
[   21.106832]  acpi_processor_stop+0x70/0x80
[   21.110917]  really_probe+0x174/0x548
[   21.114568]  driver_probe_device+0x7c/0x148
[   21.118740]  device_driver_attach+0x94/0xa0
[   21.122912]  __driver_attach+0xa4/0x110
[   21.126736]  bus_for_each_dev+0xe8/0x158
[   21.130648]  driver_attach+0x30/0x40
[   21.134212]  bus_add_driver+0x234/0x2f0
[   21.0x10/0x18
[   21.161764]
[   21.163244] The buggy address belongs to the object at ffff00236cdeb600
[   21.163244]  which belongs to the cache kmalloc-256 of size 256
[   21.175750] The buggy address is located 132 bytes inside of
[   21.175750]  256-byte region [ffff00236cdeb600, ffff00236cdeb700)
[   21.187473] The buggy address belongs to the page:
[   21.192254] page:fffffe008d937a00 refcount:1 mapcount:0 mapping:ffff002370c0fa00 index:0x0 compound_mapcount: 0
[   21.202331] flags: 0x1ffff00000010200(slab|head)
[   21.206940] raw: 1ffff00000010200 dead000000000100 dead000000000122 ffff002370c0fa00
[   21.214671] raw: 0000000000000000 00000000802a002a 00000001ffffffff 0000000000000000
[   21.222400] page dumped because: kasan: bad access detected
[   21.227959]
[   21.229438] Memory state around the buggy address:
[   21.234218]  ffff00236cdeb580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   21.241427]  ffff00236cdeb600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   21.248637] >ffff00236cdeb680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   21.255845]                    ^
[   21.259062]  ffff00236cdeb700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   21.266272]  ffff00236cdeb780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   21.273480] ==================================================================

It seems that global pcc_data[pcc_ss_id] can be freed in acpi_cppc_processor_exit(), but we may later reference this value, so NULLify it when freed.

Also remove the useless setting of data "pcc_channel_acquired", which we're about to free.

---
 drivers/acpi/cppc_acpi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -909,8 +909,8 @@ void acpi_cppc_processor_exit(struct acp
 			pcc_data[pcc_ss_id]->refcount--;
 			if (!pcc_data[pcc_ss_id]->refcount) {
 				pcc_mbox_free_channel(pcc_data[pcc_ss_id]->pcc_channel);
-				pcc_data[pcc_ss_id]->pcc_channel_acquired = 0;
 				kfree(pcc_data[pcc_ss_id]);
+				pcc_data[pcc_ss_id] = NULL;
 			}
 		}
 	}

From: Will Deacon <[email protected]>

commit 4ac2813cc867ae563a1ba5a9414bfb554e5796fa upstream.

Ensure the SSID element is bounds-checked prior to invoking memcpy() with its length field, when copying to userspace.

---
 net/wireless/wext-sme.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

@@ -202,6 +202,7 @@ int cfg80211_mgd_wext_giwessid(struct ne
 			       struct iw_point *data, char *ssid)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int ret = 0;
 
 	/* call only for station! */
 	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))

@@ -219,7 +220,10 @@ int cfg80211_mgd_wext_giwessid(struct ne
 		if (ie) {
 			data->flags = 1;
 			data->length = ie[1];
-			memcpy(ssid, ie + 2, data->length);
+			if (data->length > IW_ESSID_MAX_SIZE)
+				ret = -EINVAL;
+			else
+				memcpy(ssid, ie + 2, data->length);
 		}
 		rcu_read_unlock();
 	} else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {

@@ -229,7 +233,7 @@ int cfg80211_mgd_wext_giwessid(struct ne
 	}
 	wdev_unlock(wdev);
 
-	return 0;
+	return ret;
 }
 
 int cfg80211_mgd_wext_siwap(struct net_device *dev,

From: Will Deacon <[email protected]>

commit 4152561f5da3fca92af7179dd538ea89e248f9d0 upstream.

Although this shouldn't occur in practice, it's a good idea to bounds check the length field of the SSID element prior to using it for things like allocations or memcpy operations.

---
 net/mac80211/mlme.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

@@ -2554,7 +2554,8 @@ struct sk_buff *ieee80211_ap_probereq_ge
 
 	rcu_read_lock();
 	ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
-	if (WARN_ON_ONCE(ssid == NULL))
+	if (WARN_ONCE(!ssid || ssid[1] > IEEE80211_MAX_SSID_LEN,
+		      "invalid SSID element (len=%d)", ssid ? ssid[1] : -1))
 		ssid_len = 0;
 	else
 		ssid_len = ssid[1];

@@ -5039,7 +5040,7 @@ int ieee80211_mgd_assoc(struct ieee80211
 
 	rcu_read_lock();
 	ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
-	if (!ssidie) {
+	if (!ssidie || ssidie[1] > sizeof(assoc_data->ssid)) {
 		rcu_read_unlock();
 		kfree(assoc_data);
 		return -EINVAL;

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

commit 11bcf5f78905b90baae8fb01e16650664ed0cb00 upstream.

Another panel that needs 6BPC quirk.

---
 drivers/gpu/drm/drm_edid.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -166,6 +166,9 @@ static const struct edid_quirk {
 	/* Medion MD 30217 PG */
 	{ "MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75 },
 
+	/* Lenovo G50 */
+	{ "SDC", 18514, EDID_QUIRK_FORCE_6BPC },
+
 	/* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */
 	{ "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC },
 

From: Thomas Hellstrom <[email protected]>

commit 941f2f72dbbe0cf8c2d6e0b180a8021a0ec477fa upstream.

Commit 4daa4fba3a38 ("gpu: drm: ttm: Adding new return type vm_fault_t") broke TTM prefaulting. Since vmf_insert_mixed() typically always returns VM_FAULT_NOPAGE, prefaulting stops after the second PTE.

Restore (almost) the original behaviour. Unfortunately we can no longer with the new vm_fault_t return type determine whether a prefaulting PTE insertion hit an already populated PTE, and terminate the insertion loop. Instead we continue with the pre-determined number of prefaults.

---
 drivers/gpu/drm/ttm/ttm_bo_vm.c |   16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

@@ -273,15 +273,13 @@ static vm_fault_t ttm_bo_vm_fault(struct
 		else
 			ret = vmf_insert_pfn(&cvma, address, pfn);
 
-		/*
-		 * Somebody beat us to this PTE or prefaulting to
-		 * an already populated PTE, or prefaulting error.
-		 */
-
-		if (unlikely((ret == VM_FAULT_NOPAGE && i > 0)))
-			break;
-		else if (unlikely(ret & VM_FAULT_ERROR))
-			goto out_io_unlock;
+		/* Never error on prefaulted PTEs */
+		if (unlikely((ret & VM_FAULT_ERROR))) {
+			if (i == 0)
+				goto out_io_unlock;
+			else
+				break;
+		}
 
 		address += PAGE_SIZE;
 		if (unlikely(++page_offset >= page_last))

From: Hans de Goede <[email protected]>

commit 984d7a929ad68b7be9990fc9c5cfa5d5c9fc7942 upstream.

Bail from the pci_driver probe function instead of from the drm_driver load function.

This avoid /dev/dri/card0 temporarily getting registered and then unregistered again, sending unwanted add / remove udev events to userspace.

Specifically this avoids triggering the (userspace) bug fixed by this plymouth merge-request:
https://gitlab.freedesktop.org/plymouth/plymouth/merge_requests/59

Note that despite that being a userspace bug, not sending unnecessary udev events is a good idea in general.

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c |   35 ++++++++++++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c |   35 --------------------------------
 2 files changed, 35 insertions(+), 35 deletions(-)

@@ -841,6 +841,41 @@ static int amdgpu_pci_probe(struct pci_d
 	if (ret == -EPROBE_DEFER)
 		return ret;
 
+#ifdef CONFIG_DRM_AMDGPU_SI
+	if (!amdgpu_si_support) {
+		switch (flags & AMD_ASIC_MASK) {
+		case CHIP_TAHITI:
+		case CHIP_PITCAIRN:
+		case CHIP_VERDE:
+		case CHIP_OLAND:
+		case CHIP_HAINAN:
+			dev_info(&pdev->dev,
+				 "SI support provided by radeon.\n");
+			dev_info(&pdev->dev,
+				 "Use radeon.si_support=0 amdgpu.si_support=1 to override.\n"
+				);
+			return -ENODEV;
+		}
+	}
+#endif
+#ifdef CONFIG_DRM_AMDGPU_CIK
+	if (!amdgpu_cik_support) {
+		switch (flags & AMD_ASIC_MASK) {
+		case CHIP_KAVERI:
+		case CHIP_BONAIRE:
+		case CHIP_HAWAII:
+		case CHIP_KABINI:
+		case CHIP_MULLINS:
+			dev_info(&pdev->dev,
+				 "CIK support provided by radeon.\n");
+			dev_info(&pdev->dev,
+				 "Use radeon.cik_support=0 amdgpu.cik_support=1 to override.\n"
+				);
+			return -ENODEV;
+		}
+	}
+#endif
+
 	/* Get rid of things like offb */
 	ret = amdgpu_kick_out_firmware_fb(pdev);
 	if (ret)

@@ -87,41 +87,6 @@ int amdgpu_driver_load_kms(struct drm_de
 	struct amdgpu_device *adev;
 	int r, acpi_status;
 
-#ifdef CONFIG_DRM_AMDGPU_SI
-	if (!amdgpu_si_support) {
-		switch (flags & AMD_ASIC_MASK) {
-		case CHIP_TAHITI:
-		case CHIP_PITCAIRN:
-		case CHIP_VERDE:
-		case CHIP_OLAND:
-		case CHIP_HAINAN:
-			dev_info(dev->dev,
-				 "SI support provided by radeon.\n");
-			dev_info(dev->dev,
-				 "Use radeon.si_support=0 amdgpu.si_support=1 to override.\n"
-				);
-			return -ENODEV;
-		}
-	}
-#endif
-#ifdef CONFIG_DRM_AMDGPU_CIK
-	if (!amdgpu_cik_support) {
-		switch (flags & AMD_ASIC_MASK) {
-		case CHIP_KAVERI:
-		case CHIP_BONAIRE:
-		case CHIP_HAWAII:
-		case CHIP_KABINI:
-		case CHIP_MULLINS:
-			dev_info(dev->dev,
-				 "CIK support provided by radeon.\n");
-			dev_info(dev->dev,
-				 "Use radeon.cik_support=0 amdgpu.cik_support=1 to override.\n"
-				);
-			return -ENODEV;
-		}
-	}
-#endif
-
 	adev = kzalloc(sizeof(struct amdgpu_device), GFP_KERNEL);
 	if (adev == NULL) {
 		return -ENOMEM;

From: David Hildenbrand <[email protected]>

commit 641fe2e9387a36f9ee01d7c69382d1fe147a5e98 upstream.

Uninitialized memmaps contain garbage and in the worst case trigger kernel BUGs, especially with CONFIG_PAGE_POISONING. They should not get touched.

Right now, when trying to soft-offline a PFN that resides on a memory block that was never onlined, one gets a misleading error with CONFIG_PAGE_POISONING:

  :/# echo 5637144576 > /sys/devices/system/memory/soft_offline_page
  [   23.097167] soft offline: 0x150000 page already poisoned

But the actual result depends on the garbage in the memmap.

soft_offline_page() can only work with online pages, it returns -EIO in case of ZONE_DEVICE. Make sure to only forward pages that are online (iow, managed by the buddy) and, therefore, have an initialized memmap.

Add a check against pfn_to_online_page() and similarly return -EIO.

---
 drivers/base/memory.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -554,6 +554,9 @@ store_soft_offline_page(struct device *d
 	pfn >>= PAGE_SHIFT;
 	if (!pfn_valid(pfn))
 		return -ENXIO;
+	/* Only online pages can be soft-offlined (esp., not ZONE_DEVICE). */
+	if (!pfn_to_online_page(pfn))
+		return -EIO;
 	ret = soft_offline_page(pfn_to_page(pfn), 0);
 	return ret == 0 ? count : ret;
 }

From: David Hildenbrand <[email protected]>

commit aad5f69bc161af489dbb5934868bd347282f0764 upstream.

There are three places where we access uninitialized memmaps, namely:
- /proc/kpagecount
- /proc/kpageflags
- /proc/kpagecgroup

We have initialized memmaps either when the section is online or when the page was initialized to the ZONE_DEVICE. Uninitialized memmaps contain garbage and in the worst case trigger kernel BUGs, especially with CONFIG_PAGE_POISONING.

For example, not onlining a DIMM during boot and calling /proc/kpagecount with CONFIG_PAGE_POISONING:

  :/# cat /proc/kpagecount > tmp.test
  BUG: unable to handle page fault for address: fffffffffffffffe
  #PF: supervisor read access in kernel mode
  #PF: error_code(0x0000) - not-present page
  PGD 114616067 P4D 114616067 PUD 114618067 PMD 0
  Oops: 0000 [#1] SMP NOPTI
  CPU: 0 PID: 469 Comm: cat Not tainted 5.4.0-rc1-next-20191004+ #11
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.4
  RIP: 0010:kpagecount_read+0xce/0x1e0
  Code: e8 09 83 e0 3f 48 0f a3 02 73 2d 4c 89 e7 48 c1 e7 06 48 03 3d ab 51 01 01 74 1d 48 8b 57 08 480
  RSP: 0018:ffffa14e409b7e78 EFLAGS: 00010202
  RAX: fffffffffffffffe RBX: 0000000000020000 RCX: 0000000000000000
  RDX: 0000000000000001 RSI: 00007f76b5595000 RDI: fffff35645000000
  RBP: 00007f76b5595000 R08: 0000000000000001 R09: 0000000000000000
  R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000140000
  R13: 0000000000020000 R14: 00007f76b5595000 R15: ffffa14e409b7f08
  FS:  00007f76b577d580(0000) GS:ffff8f41bd400000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: fffffffffffffffe CR3: 0000000078960000 CR4: 00000000000006f0
  Call Trace:
   proc_reg_read+0x3c/0x60
   vfs_read+0xc5/0x180
   ksys_read+0x68/0xe0
   do_syscall_64+0x5c/0xa0
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

For now, let's drop support for ZONE_DEVICE from the three pseudo files in order to fix this. To distinguish offline memory (with garbage memmap) from ZONE_DEVICE memory with properly initialized memmaps, we would have to check get_dev_pagemap() and pfn_zone_device_reserved() right now. The usage of both (especially, special casing devmem) is frowned upon and needs to be reworked.

The fundamental issue we have is:

	if (pfn_to_online_page(pfn)) {
		/* memmap initialized */
	} else if (pfn_valid(pfn)) {
		/*
		 * ???
		 * a) offline memory. memmap garbage.
		 * b) devmem: memmap initialized to ZONE_DEVICE.
		 * c) devmem: reserved for driver. memmap garbage.
		 * (d) devmem: memmap currently initializing - garbage)
		 */
	}

We'll leave the pfn_zone_device_reserved() check in stable_page_flags() in place as that function is also used from memory failure. We now no longer dump information about pages that are not in use anymore - offline.

---
 fs/proc/page.c |   28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

@@ -42,10 +42,12 @@ static ssize_t kpagecount_read(struct fi
 		return -EINVAL;
 
 	while (count > 0) {
-		if (pfn_valid(pfn))
-			ppage = pfn_to_page(pfn);
-		else
-			ppage = NULL;
+		/*
+		 * TODO: ZONE_DEVICE support requires to identify
+		 * memmaps that were actually initialized.
+		 */
+		ppage = pfn_to_online_page(pfn);
+
 		if (!ppage || PageSlab(ppage))
 			pcount = 0;
 		else

@@ -216,10 +218,11 @@ static ssize_t kpageflags_read(struct fi
 		return -EINVAL;
 
 	while (count > 0) {
-		if (pfn_valid(pfn))
-			ppage = pfn_to_page(pfn);
-		else
-			ppage = NULL;
+		/*
+		 * TODO: ZONE_DEVICE support requires to identify
+		 * memmaps that were actually initialized.
+		 */
+		ppage = pfn_to_online_page(pfn);
 
 		if (put_user(stable_page_flags(ppage), out)) {
 			ret = -EFAULT;

@@ -261,10 +264,11 @@ static ssize_t kpagecgroup_read(struct f
 		return -EINVAL;
 
 	while (count > 0) {
-		if (pfn_valid(pfn))
-			ppage = pfn_to_page(pfn);
-		else
-			ppage = NULL;
+		/*
+		 * TODO: ZONE_DEVICE support requires to identify
+		 * memmaps that were actually initialized.
+		 */
+		ppage = pfn_to_online_page(pfn);
 
 		if (ppage)
 			ino = page_cgroup_ino(ppage);

From: Faiz Abbas <[email protected]>

commit c07d0073b9ec80a139d07ebf78e9c30d2a28279e upstream.

Add a write memory barrier to make sure that descriptors are actually written to memory, before ringing the doorbell.

---
 drivers/mmc/host/cqhci.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

@@ -617,7 +617,8 @@ static int cqhci_request(struct mmc_host
 	cq_host->slot[tag].flags = 0;
 
 	cq_host->qcnt += 1;
-
+	/* Make sure descriptors are ready before ringing the doorbell */
+	wmb();
 	cqhci_writel(cq_host, 1 << tag, CQHCI_TDBR);
 	if (!(cqhci_readl(cq_host, CQHCI_TDBR) & (1 << tag)))
 		pr_debug("%s: cqhci: doorbell not set for tag %d\n",

From: David Hildenbrand <[email protected]>

commit 96c804a6ae8c59a9092b3d5dd581198472063184 upstream.

We should check for pfn_to_online_page() to not access uninitialized memmaps. Reshuffle the code so we don't have to duplicate the error message.

---
 mm/memory-failure.c |   14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)