5.4.281-rc1 review

This is the start of the stable review cycle for the 5.4.281 release. There are 43 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 Sat, 27 Jul 2024 14:27:16 +0000. Anything received after that time might be too late.

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

	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.281-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-5.4.y
and the diffstat can be found below.

thanks,

greg k-h

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

Greg Kroah-Hartman <[email protected]>

    Linux 5.4.281-rc1

Jann Horn <[email protected]>
filelock: Fix fcntl/close race recovery compat path

Edson Juliano Drosdeck <[email protected]>
ALSA: hda/realtek: Enable headset mic on Positivo SU C1400

lei lu <[email protected]>
jfs: don't walk off the end of ealist

lei lu <[email protected]>
ocfs2: add bounds checking to ocfs2_check_dir_entry()

Paolo Abeni <[email protected]>
net: relax socket state check at accept time.

Dan Carpenter <[email protected]>
drm/amdgpu: Fix signedness bug in sdma_v4_0_process_trap_irq()

Kuan-Wei Chiu <[email protected]>
ACPI: processor_idle: Fix invalid comparison with insertion sort for latency

Masahiro Yamada <[email protected]>
ARM: 9324/1: fix get_user() broken with veneer

Edward Adam Davis <[email protected]>
hfsplus: fix uninit-value in copy_name

John Hubbard <[email protected]>
selftests/vDSO: fix clang build errors and warnings

Uwe Kleine-König <[email protected]>

    spi: imx: Don't expect DMA for i.MX{25,35,50,51,53} cspi devices

Christian Brauner <[email protected]>
fs: better handle deep ancestor chains in is_subdir()

Tetsuo Handa <[email protected]>
Bluetooth: hci_core: cancel all works upon hci_unregister_dev()

Xingui Yang <[email protected]>
scsi: libsas: Fix exp-attached device scan after probe failure scanned in again after probe failed

Ganesh Goudar <[email protected]>

    powerpc/eeh: avoid possible crash when edev->pdev changes

Anjali K <[email protected]>
powerpc/pseries: Whitelist dtl slub object for copying to userspace

Yunshui Jiang <[email protected]>
net: mac802154: Fix racy device stats updates by DEV_STATS_INC() and DEV_STATS_ADD()

Daniele Palmas <[email protected]>
net: usb: qmi_wwan: add Telit FN912 compositions

Shengjiu Wang <[email protected]>
ALSA: dmaengine_pcm: terminate dmaengine before synchronize

Heiko Carstens <[email protected]>
s390/sclp: Fix sclp_init() cleanup on failure

Ian Ray <[email protected]>
gpio: pca953x: fix pca953x_irq_bus_sync_unlock race

Chen Ni <[email protected]>
can: kvaser_usb: fix return value for hif_usb_send_regout

Primoz Fiser <[email protected]>
ASoC: ti: omap-hdmi: Fix too long driver name

Jai Luthra <[email protected]>
ASoC: ti: davinci-mcasp: Set min period size using FIFO config

Thomas GENTY <[email protected]>
bytcr_rt5640 : inverse jack detect for Archos 101 cesium

Jonathan Denose <[email protected]>
Input: elantech - fix touchpad state on resume for Lenovo N24

Arnd Bergmann <[email protected]>
mips: fix compat_sys_lseek syscall

Kailang Yang <[email protected]>
ALSA: hda/realtek: Add more codec ID to no shutup pins list

Michael Ellerman <[email protected]>
KVM: PPC: Book3S HV: Prevent UAF in kvm_spapr_tce_attach_iommu_group()

Dmitry Antipov <[email protected]>
wifi: cfg80211: wext: add extra SIOCSIWSCAN data check

Alexander Usyskin <[email protected]>
mei: demote client disconnect warning on suspend to debug

Yuntao Wang <[email protected]>
fs/file: fix the check in find_next_fd()

Masahiro Yamada <[email protected]>
kconfig: remove wrong expr_trans_bool()

Masahiro Yamada <[email protected]>
kconfig: gconf: give a proper initial state to the Save button

Eric Dumazet <[email protected]>
ila: block BH in ila_output()

Hans de Goede <[email protected]>
Input: silead - Always support 10 fingers

Dmitry Antipov <[email protected]>

    wifi: mac80211: fix UBSAN noise in ieee80211_prep_hw_scan()

Nicolas Escande <[email protected]>
wifi: mac80211: mesh: init nonpeer_pm to active by default in mesh sdata

Armin Wolf <[email protected]>
ACPI: EC: Avoid returning AE_OK on errors in address space handler

Armin Wolf <[email protected]>
ACPI: EC: Abort address space access upon error

Saurav Kashyap <[email protected]>
scsi: qedf: Set qed_slowpath_params to zero before use

Jann Horn <[email protected]>
filelock: Remove locks reliably when fcntl/close race is detected

Kees Cook <[email protected]>
gcc-plugins: Rename last_stmt() for GCC 14+

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

Diffstat:

 Makefile                                           |  4 +-
 arch/arm/include/asm/uaccess.h                     | 14 +------
 arch/mips/kernel/syscalls/syscall_o32.tbl          |  2 +-
 arch/powerpc/kernel/eeh_pe.c                       |  7 +++-
 arch/powerpc/kvm/book3s_64_vio.c                   | 18 ++++++---
 arch/powerpc/platforms/pseries/setup.c             |  4 +-
 drivers/acpi/ec.c                                  |  9 ++++-
 drivers/acpi/processor_idle.c                      | 40 ++++++++-----------
 drivers/gpio/gpio-pca953x.c                        |  2 +
 drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c             |  2 +-
 drivers/input/mouse/elantech.c                     | 31 +++++++++++++++
 drivers/input/touchscreen/silead.c                 | 19 +++------
 drivers/misc/mei/main.c                            |  2 +-
 drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c   |  2 +-
 drivers/net/usb/qmi_wwan.c                         |  2 +
 drivers/s390/char/sclp.c                           |  1 +
 drivers/scsi/libsas/sas_internal.h                 | 14 +++++++
 drivers/scsi/qedf/qedf_main.c                      |  1 +
 drivers/spi/spi-imx.c                              |  2 +-
 fs/dcache.c                                        | 31 +++++++--------
 fs/file.c                                          |  4 +-
 fs/hfsplus/xattr.c                                 |  2 +-
 fs/jfs/xattr.c                                     | 23 +++++++++--
 fs/locks.c                                         | 18 ++++-----
 fs/ocfs2/dir.c                                     | 46 ++++++++++++++--------
 net/bluetooth/hci_core.c                           |  4 ++
 net/ipv4/af_inet.c                                 |  4 +-
 net/ipv6/ila/ila_lwt.c                             |  7 +++-
 net/mac80211/mesh.c                                |  1 +
 net/mac80211/scan.c                                | 14 +++++--
 net/mac802154/tx.c                                 |  8 ++--
 net/wireless/scan.c                                |  8 +++-
 scripts/gcc-plugins/gcc-common.h                   |  4 ++
 scripts/kconfig/expr.c                             | 29 --------------
 scripts/kconfig/expr.h                             |  1 -
 scripts/kconfig/gconf.c                            |  3 +-
 scripts/kconfig/menu.c                             |  2 -
 sound/core/pcm_dmaengine.c                         | 12 ++++++
 sound/pci/hda/patch_realtek.c                      |  5 +++
 sound/soc/intel/boards/bytcr_rt5640.c              | 11 ++++++
 sound/soc/ti/davinci-mcasp.c                       |  9 ++++-
 sound/soc/ti/omap-hdmi.c                           |  6 +--
 tools/testing/selftests/vDSO/parse_vdso.c          | 16 +++++---
 .../selftests/vDSO/vdso_standalone_test_x86.c      | 18 ++++++++-
 44 files changed, 284 insertions(+), 178 deletions(-)

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Kees Cook <[email protected]>

commit 2e3f65ccfe6b0778b261ad69c9603ae85f210334 upstream.

In GCC 14, last_stmt() was renamed to last_nondebug_stmt(). Add a helper macro to handle the renaming.

---
 scripts/gcc-plugins/gcc-common.h |    4 ++++
 1 file changed, 4 insertions(+)

@@ -977,4 +977,8 @@ static inline void debug_gimple_stmt(con
 #define SET_DECL_MODE(decl, mode)	DECL_MODE(decl) = (mode)
 #endif
 
+#if BUILDING_GCC_VERSION >= 14000
+#define last_stmt(x)			last_nondebug_stmt(x)
+#endif
+
 #endif

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Jann Horn <[email protected]>

commit 3cad1bc010416c6dd780643476bc59ed742436b9 upstream.

When fcntl_setlk() races with close(), it removes the created lock with do_lock_file_wait().
However, LSMs can allow the first do_lock_file_wait() that created the lock while denying the second do_lock_file_wait() that tries to remove the lock. In theory (but AFAIK not in practice), posix_lock_file() could also fail to remove a lock due to GFP_KERNEL allocation failure (when splitting a range in the middle).

After the bug has been triggered, use-after-free reads will occur in lock_get_status() when userspace reads /proc/locks. This can likely be used to read arbitrary kernel memory, but can't corrupt kernel memory. This only affects systems with SELinux / Smack / AppArmor / BPF-LSM in enforcing mode and only works from some security contexts.

Fix it by calling locks_remove_posix() instead, which is designed to reliably get rid of POSIX locks associated with the given file and files_struct and is also used by filp_flush().

---
 fs/locks.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

@@ -2526,8 +2526,9 @@ int fcntl_setlk(unsigned int fd, struct
 	error = do_lock_file_wait(filp, cmd, file_lock);
 
 	/*
-	 * Attempt to detect a close/fcntl race and recover by releasing the
-	 * lock that was just acquired. There is no need to do that when we're
+	 * Detect close/fcntl races and recover by zapping all POSIX locks
+	 * associated with this file and our files_struct, just like on
+	 * filp_flush(). There is no need to do that when we're
 	 * unlocking though, or for OFD locks.
 	 */
 	if (!error && file_lock->fl_type != F_UNLCK &&

@@ -2541,9 +2542,7 @@ int fcntl_setlk(unsigned int fd, struct
 		f = fcheck(fd);
 		spin_unlock(&current->files->file_lock);
 		if (f != filp) {
-			file_lock->fl_type = F_UNLCK;
-			error = do_lock_file_wait(filp, cmd, file_lock);
-			WARN_ON_ONCE(error);
+			locks_remove_posix(filp, &current->files);
 			error = -EBADF;
 		}
 	}

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Saurav Kashyap <[email protected]>

[ Upstream commit 6c3bb589debd763dc4b94803ddf3c13b4fcca776 ]

Zero qed_slowpath_params before use.

---
 drivers/scsi/qedf/qedf_main.c | 1 +
 1 file changed, 1 insertion(+)

index 858058f228191..e0601b5520b78 100644
@@ -3299,6 +3299,7 @@ static int __qedf_probe(struct pci_dev *pdev, int mode)
 	}
 
 	/* Start the Slowpath-process */
+	memset(&slowpath_params, 0, sizeof(struct qed_slowpath_params));
 	slowpath_params.int_mode = QED_INT_MODE_MSIX;
 	slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
 	slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Armin Wolf <[email protected]>

[ Upstream commit f6f172dc6a6d7775b2df6adfd1350700e9a847ec ]

When a multi-byte address space access is requested, acpi_ec_read()/ acpi_ec_write() is being called multiple times.

Abort such operations if a single call to acpi_ec_read() / acpi_ec_write() fails, as the data read from / written to the EC might be incomplete.

---
 drivers/acpi/ec.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

index c7baccd47b89f..43a8941b6743d 100644
@@ -1310,10 +1310,13 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 	if (ec->busy_polling || bits > 8)
 		acpi_ec_burst_enable(ec);
 
-	for (i = 0; i < bytes; ++i, ++address, ++value)
+	for (i = 0; i < bytes; ++i, ++address, ++value) {
 		result = (function == ACPI_READ) ?
 			acpi_ec_read(ec, address, value) :
 			acpi_ec_write(ec, address, *value);
+		if (result < 0)
+			break;
+	}
 
 	if (ec->busy_polling || bits > 8)
 		acpi_ec_burst_disable(ec);

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Armin Wolf <[email protected]>

[ Upstream commit c4bd7f1d78340e63de4d073fd3dbe5391e2996e5 ]

If an error code other than EINVAL, ENODEV or ETIME is returned by acpi_ec_read() / acpi_ec_write(), then AE_OK is incorrectly returned by acpi_ec_space_handler().

Fix this by only returning AE_OK on success, and return AE_ERROR otherwise.

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

index 43a8941b6743d..142578451e381 100644
@@ -1328,8 +1328,10 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 		return AE_NOT_FOUND;
 	case -ETIME:
 		return AE_TIME;
-	default:
+	case 0:
 		return AE_OK;
+	default:
+		return AE_ERROR;
 	}
 }
 

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Nicolas Escande <[email protected]>

[ Upstream commit 6f6291f09a322c1c1578badac8072d049363f4e6 ]

With a ath9k device I can see that:
iw phy phy0 interface add mesh0 type mp
ip link set mesh0 up
iw dev mesh0 scan

Will start a scan with the Power Management bit set in the Frame Control Field. This is because we set this bit depending on the nonpeer_pm variable of the mesh iface sdata and when there are no active links on the interface it remains to NL80211_MESH_POWER_UNKNOWN.

As soon as links starts to be established, it wil switch to NL80211_MESH_POWER_ACTIVE as it is the value set by befault on the per sta nonpeer_pm field.
As we want no power save by default, (as expressed with the per sta ini values), lets init it to the expected default value of NL80211_MESH_POWER_ACTIVE.

Also please note that we cannot change the default value from userspace prior to establishing a link as using NL80211_CMD_SET_MESH_CONFIG will not work before NL80211_CMD_JOIN_MESH has been issued. So too late for our initial scan.

---
 net/mac80211/mesh.c | 1 +
 1 file changed, 1 insertion(+)

index 36978a0e50001..c2d1addaa7ccc 100644
@@ -1525,6 +1525,7 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
 	ifmsh->last_preq = jiffies;
 	ifmsh->next_perr = jiffies;
 	ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
+	ifmsh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
 	/* Allocate all mesh structures when creating the first mesh interface. */
 	if (!mesh_allocated)
 		ieee80211s_init();

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Dmitry Antipov <[email protected]>

[ Upstream commit 92ecbb3ac6f3fe8ae9edf3226c76aa17b6800699 ]

When testing the previous patch with CONFIG_UBSAN_BOUNDS, I've noticed the following:

UBSAN: array-index-out-of-bounds in net/mac80211/scan.c:372:4
index 0 is out of range for type 'struct ieee80211_channel *[]'
CPU: 0 PID: 1435 Comm: wpa_supplicant Not tainted 6.9.0+ #1
Hardware name: LENOVO 20UN005QRT/20UN005QRT <...BIOS details...>
Call Trace:
 <TASK>
 dump_stack_lvl+0x2d/0x90
 __ubsan_handle_out_of_bounds+0xe7/0x140
 ? timerqueue_add+0x98/0xb0
 ieee80211_prep_hw_scan+0x2db/0x480 [mac80211]
 ? __kmalloc+0xe1/0x470
 __ieee80211_start_scan+0x541/0x760 [mac80211]
 rdev_scan+0x1f/0xe0 [cfg80211]
 nl80211_trigger_scan+0x9b6/0xae0 [cfg80211]
 ...<the rest is not too useful...>

Since '__ieee80211_start_scan()' leaves 'hw_scan_req->req.n_channels' uninitialized, actual boundaries of 'hw_scan_req->req.channels' can't be checked in 'ieee80211_prep_hw_scan()'. Although an initialization of 'hw_scan_req->req.n_channels' introduces some confusion around allocated vs. used VLA members, this shouldn't be a problem since everything is correctly adjusted soon in 'ieee80211_prep_hw_scan()'.

Cleanup 'kmalloc()' math in '__ieee80211_start_scan()' by using the convenient 'struct_size()' as well.

---
 net/mac80211/scan.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

index ee65f1f50a0ab..d53018610d8a5 100644
@@ -701,15 +701,21 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
 			local->hw_scan_ies_bufsize *= n_bands;
 		}
 
-		local->hw_scan_req = kmalloc(
-				sizeof(*local->hw_scan_req) +
-				req->n_channels * sizeof(req->channels[0]) +
-				local->hw_scan_ies_bufsize, GFP_KERNEL);
+		local->hw_scan_req = kmalloc(struct_size(local->hw_scan_req,
+							 req.channels,
+							 req->n_channels) +
+					     local->hw_scan_ies_bufsize,
+					     GFP_KERNEL);
 		if (!local->hw_scan_req)
 			return -ENOMEM;
 
 		local->hw_scan_req->req.ssids = req->ssids;
 		local->hw_scan_req->req.n_ssids = req->n_ssids;
+		/* None of the channels are actually set
+		 * up but let UBSAN know the boundaries.
+		 */
+		local->hw_scan_req->req.n_channels = req->n_channels;
+
 		ies = (u8 *)local->hw_scan_req +
 			sizeof(*local->hw_scan_req) +
 			req->n_channels * sizeof(req->channels[0]);

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Hans de Goede <[email protected]>

[ Upstream commit 38a38f5a36da9820680d413972cb733349400532 ]

When support for Silead touchscreens was orginal added some touchscreens with older firmware versions only supported 5 fingers and this was made the default requiring the setting of a "silead,max-fingers=10" uint32 device-property for all touchscreen models which do support 10 fingers.

There are very few models with the old 5 finger fw, so in practice the setting of the "silead,max-fingers=10" is boilerplate which needs to be copy and pasted to every touchscreen config.

Reporting that 10 fingers are supported on devices which only support 5 fingers doesn't cause any problems for userspace in practice, since at max 4 finger gestures are supported anyways. Drop the max_fingers configuration and simply always assume 10 fingers.

---
 drivers/input/touchscreen/silead.c | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

index c8776146f1d1b..467feacdbd7a2 100644
@@ -70,7 +70,6 @@ struct silead_ts_data {
 	struct regulator_bulk_data regulators[2];
 	char fw_name[64];
 	struct touchscreen_properties prop;
-	u32 max_fingers;
 	u32 chip_id;
 	struct input_mt_pos pos[SILEAD_MAX_FINGERS];
 	int slots[SILEAD_MAX_FINGERS];

@@ -98,7 +97,7 @@ static int silead_ts_request_input_dev(struct silead_ts_data *data)
 	input_set_abs_params(data->input, ABS_MT_POSITION_Y, 0, 4095, 0, 0);
 	touchscreen_parse_properties(data->input, true, &data->prop);
 
-	input_mt_init_slots(data->input, data->max_fingers,
+	input_mt_init_slots(data->input, SILEAD_MAX_FINGERS,
 			    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED |
 			    INPUT_MT_TRACK);
 

@@ -145,10 +144,10 @@ static void silead_ts_read_data(struct i2c_client *client)
 		return;
 	}
 
-	if (buf[0] > data->max_fingers) {
+	if (buf[0] > SILEAD_MAX_FINGERS) {
 		dev_warn(dev, "More touches reported then supported %d > %d\n",
-			 buf[0], data->max_fingers);
-		buf[0] = data->max_fingers;
+			 buf[0], SILEAD_MAX_FINGERS);
+		buf[0] = SILEAD_MAX_FINGERS;
 	}
 
 	touch_nr = 0;

@@ -200,7 +199,6 @@ static void silead_ts_read_data(struct i2c_client *client)
 
 static int silead_ts_init(struct i2c_client *client)
 {
-	struct silead_ts_data *data = i2c_get_clientdata(client);
 	int error;
 
 	error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET,

@@ -210,7 +208,7 @@ static int silead_ts_init(struct i2c_client *client)
 	usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);
 
 	error = i2c_smbus_write_byte_data(client, SILEAD_REG_TOUCH_NR,
-					data->max_fingers);
+					  SILEAD_MAX_FINGERS);
 	if (error)
 		goto i2c_write_err;
 	usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX);

@@ -437,13 +435,6 @@ static void silead_ts_read_props(struct i2c_client *client)
 	const char *str;
 	int error;
 
-	error = device_property_read_u32(dev, "silead,max-fingers",
-					 &data->max_fingers);
-	if (error) {
-		dev_dbg(dev, "Max fingers read error %d\n", error);
-		data->max_fingers = 5; /* Most devices handle up-to 5 fingers */
-	}
-
 	error = device_property_read_string(dev, "firmware-name", &str);
 	if (!error)
 		snprintf(data->fw_name, sizeof(data->fw_name),

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Eric Dumazet <[email protected]>

[ Upstream commit cf28ff8e4c02e1ffa850755288ac954b6ff0db8c ]

As explained in commit 1378817486d6 ("tipc: block BH before using dst_cache"), net/core/dst_cache.c helpers need to be called with BH disabled.

ila_output() is called from lwtunnel_output() possibly from process context, and under rcu_read_lock().

We might be interrupted by a softirq, re-enter ila_output() and corrupt dst_cache data structures.

Fix the race by using local_bh_disable().

---
 net/ipv6/ila/ila_lwt.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

index 422dcc691f71c..6a6a30e82810d 100644
@@ -58,7 +58,9 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb)
 		return orig_dst->lwtstate->orig_output(net, sk, skb);
 	}
 
+	local_bh_disable();
 	dst = dst_cache_get(&ilwt->dst_cache);
+	local_bh_enable();
 	if (unlikely(!dst)) {
 		struct ipv6hdr *ip6h = ipv6_hdr(skb);
 		struct flowi6 fl6;

@@ -86,8 +88,11 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb)
 			goto drop;
 		}
 
-		if (ilwt->connected)
+		if (ilwt->connected) {
+			local_bh_disable();
 			dst_cache_set_ip6(&ilwt->dst_cache, dst, &fl6.saddr);
+			local_bh_enable();
+		}
 	}
 
 	skb_dst_set(skb, dst);

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Masahiro Yamada <[email protected]>

[ Upstream commit 46edf4372e336ef3a61c3126e49518099d2e2e6d ]

Currently, the initial state of the "Save" button is always active.

If none of the CONFIG options are changed while loading the .config file, the "Save" button should be greyed out.

This can be fixed by calling conf_read() after widget initialization.

---
 scripts/kconfig/gconf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index e36b342f1065b..9b10f1248da11 100644
@@ -1483,7 +1483,6 @@ int main(int ac, char *av[])
 
 	conf_parse(name);
 	fixup_rootmenu(&rootmenu);
-	conf_read(NULL);
 
 	/* Load the interface and connect signals */
 	init_main_window(glade_file);

@@ -1491,6 +1490,8 @@ int main(int ac, char *av[])
 	init_left_tree();
 	init_right_tree();
 
+	conf_read(NULL);
+
 	switch (view_mode) {
 	case SINGLE_VIEW:
 		display_tree_part();

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Masahiro Yamada <[email protected]>

[ Upstream commit 77a92660d8fe8d29503fae768d9f5eb529c88b36 ]

expr_trans_bool() performs an incorrect transformation.

[Test Code]

    config MODULES
            def_bool y
            modules

    config A
            def_bool y
            select C if B != n

    config B
            def_tristate m

    config C
            tristate

[Result]

CONFIG_MODULES=y
CONFIG_A=y
CONFIG_B=m
CONFIG_C=m

This output is incorrect because CONFIG_C=y is expected.

Documentation/kbuild/kconfig-language.rst clearly explains the function of the '!=' operator:

If the values of both symbols are equal, it returns 'n', otherwise 'y'.

Therefore, the statement:

    select C if B != n

should be equivalent to:

select C if y

Or, more simply:

select C

Hence, the symbol C should be selected by the value of A, which is 'y'.

However, expr_trans_bool() wrongly transforms it to:

select C if B

Therefore, the symbol C is selected by (A && B), which is 'm'.

The comment block of expr_trans_bool() correctly explains its intention:

* bool FOO!=n => FOO

    ^^^^

If FOO is bool, FOO!=n can be simplified into FOO. This is correct.

However, the actual code performs this transformation when FOO is tristate:

    if (e->left.sym->type == S_TRISTATE) {
                             ^^^^^^^^^^

While it can be fixed to S_BOOLEAN, there is no point in doing so because expr_tranform() already transforms FOO!=n to FOO when FOO is bool. (see the "case E_UNEQUAL" part)

expr_trans_bool() is wrong and unnecessary.

---
 scripts/kconfig/expr.c | 29 -----------------------------
 scripts/kconfig/expr.h |  1 -
 scripts/kconfig/menu.c |  2 --
 3 files changed, 32 deletions(-)

index 9f1de58e9f0c9..9e409418534b8 100644
@@ -397,35 +397,6 @@ static struct expr *expr_eliminate_yn(struct expr *e)
 	return e;
 }
 
-/*
- * bool FOO!=n => FOO
- */
-struct expr *expr_trans_bool(struct expr *e)
-{
-	if (!e)
-		return NULL;
-	switch (e->type) {
-	case E_AND:
-	case E_OR:
-	case E_NOT:
-		e->left.expr = expr_trans_bool(e->left.expr);
-		e->right.expr = expr_trans_bool(e->right.expr);
-		break;
-	case E_UNEQUAL:
-		// FOO!=n -> FOO
-		if (e->left.sym->type == S_TRISTATE) {
-			if (e->right.sym == &symbol_no) {
-				e->type = E_SYMBOL;
-				e->right.sym = NULL;
-			}
-		}
-		break;
-	default:
-		;
-	}
-	return e;
-}
-
 /*
  * e1 || e2 -> ?
  */

index 017843c9a4f42..fbbd8ebe852a1 100644
@@ -302,7 +302,6 @@ struct expr *expr_copy(const struct expr *org);
 void expr_free(struct expr *e);
 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
 tristate expr_calc_value(struct expr *e);
-struct expr *expr_trans_bool(struct expr *e);
 struct expr *expr_eliminate_dups(struct expr *e);
 struct expr *expr_transform(struct expr *e);
 int expr_contains_symbol(struct expr *dep, struct symbol *sym);

index d9d16469859ab..2c95e8a7ef165 100644
@@ -387,8 +387,6 @@ void menu_finalize(struct menu *parent)
 				dep = expr_transform(dep);
 				dep = expr_alloc_and(expr_copy(basedep), dep);
 				dep = expr_eliminate_dups(dep);
-				if (menu->sym && menu->sym->type != S_TRISTATE)
-					dep = expr_trans_bool(dep);
 				prop->visible.expr = dep;
 
 				/*

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Yuntao Wang <[email protected]>

[ Upstream commit ed8c7fbdfe117abbef81f65428ba263118ef298a ]

The maximum possible return value of find_next_zero_bit(fdt->full_fds_bits, maxbit, bitbit) is maxbit. This return value, multiplied by BITS_PER_LONG, gives the value of bitbit, which can never be greater than maxfd, it can only be equal to maxfd at most, so the following check 'if (bitbit > maxfd)' will never be true.

Moreover, when bitbit equals maxfd, it indicates that there are no unused fds, and the function can directly return.

Fix this check.

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

index e56059fa1b309..64892b7444191 100644
@@ -462,12 +462,12 @@ struct files_struct init_files = {
 
 static unsigned int find_next_fd(struct fdtable *fdt, unsigned int start)
 {
-	unsigned int maxfd = fdt->max_fds;
+	unsigned int maxfd = fdt->max_fds; /* always multiple of BITS_PER_LONG */
 	unsigned int maxbit = maxfd / BITS_PER_LONG;
 	unsigned int bitbit = start / BITS_PER_LONG;
 
 	bitbit = find_next_zero_bit(fdt->full_fds_bits, maxbit, bitbit) * BITS_PER_LONG;
-	if (bitbit > maxfd)
+	if (bitbit >= maxfd)
 		return maxfd;
 	if (bitbit > start)
 		start = bitbit;

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Alexander Usyskin <[email protected]>

[ Upstream commit 1db5322b7e6b58e1b304ce69a50e9dca798ca95b ]

Change level for the "not connected" client message in the write callback from error to debug.

The MEI driver currently disconnects all clients upon system suspend. This behavior is by design and user-space applications with open connections before the suspend are expected to handle errors upon resume, by reopening their handles, reconnecting,
and retrying their operations.

However, the current driver implementation logs an error message every time a write operation is attempted on a disconnected client. Since this is a normal and expected flow after system resume logging this as an error can be misleading.

---
 drivers/misc/mei/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 7310b476323c2..5cd29deb79858 100644
@@ -268,7 +268,7 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
 	}
 
 	if (!mei_cl_is_connected(cl)) {
-		cl_err(dev, cl, "is not connected");
+		cl_dbg(dev, cl, "is not connected");
 		rets = -ENODEV;
 		goto out;
 	}

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Dmitry Antipov <[email protected]>

[ Upstream commit 6ef09cdc5ba0f93826c09d810c141a8d103a80fc ]

In 'cfg80211_wext_siwscan()', add extra check whether number of channels passed via 'ioctl(sock, SIOCSIWSCAN, ...)' doesn't exceed IW_MAX_FREQUENCIES and reject invalid request with -EINVAL otherwise.

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

index a1c53d4b6711b..c74882e3c3096 100644
@@ -2212,10 +2212,14 @@ int cfg80211_wext_siwscan(struct net_device *dev,
 	wiphy = &rdev->wiphy;
 
 	/* Determine number of channels, needed to allocate creq */
-	if (wreq && wreq->num_channels)
+	if (wreq && wreq->num_channels) {
+		/* Passed from userspace so should be checked */
+		if (unlikely(wreq->num_channels > IW_MAX_FREQUENCIES))
+			return -EINVAL;
 		n_channels = wreq->num_channels;
-	else
+	} else {
 		n_channels = ieee80211_get_num_supported_channels(wiphy);
+	}
 
 	creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
 		       n_channels * sizeof(void *),

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Michael Ellerman <[email protected]>

[ Upstream commit a986fa57fd81a1430e00b3c6cf8a325d6f894a63 ]

Al reported a possible use-after-free (UAF) in kvm_spapr_tce_attach_iommu_group().

It looks up stt from tablefd, but then continues to use it after doing fdput() on the returned fd. After the fdput() the tablefd is free to be closed by another thread. The close calls kvm_spapr_tce_release() and then release_spapr_tce_table() (via call_rcu()) which frees stt.

Although there are calls to rcu_read_lock() in kvm_spapr_tce_attach_iommu_group() they are not sufficient to prevent the UAF, because stt is used outside the locked regions.

With an artifcial delay after the fdput() and a userspace program which triggers the race, KASAN detects the UAF:

  BUG: KASAN: slab-use-after-free in kvm_spapr_tce_attach_iommu_group+0x298/0x720 [kvm]
  Read of size 4 at addr c000200027552c30 by task kvm-vfio/2505
  CPU: 54 PID: 2505 Comm: kvm-vfio Not tainted 6.10.0-rc3-next-20240612-dirty #1
  Hardware name: 8335-GTH POWER9 0x4e1202 opal:skiboot-v6.5.3-35-g1851b2a06 PowerNV
  Call Trace:
    dump_stack_lvl+0xb4/0x108 (unreliable)
    print_report+0x2b4/0x6ec
    kasan_report+0x118/0x2b0
    __asan_load4+0xb8/0xd0
    kvm_spapr_tce_attach_iommu_group+0x298/0x720 [kvm]
    kvm_vfio_set_attr+0x524/0xac0 [kvm]
    kvm_device_ioctl+0x144/0x240 [kvm]
    sys_ioctl+0x62c/0x1810
    system_call_exception+0x190/0x440
    system_call_vectored_common+0x15c/0x2ec
  ...
  Freed by task 0:
   ...
   kfree+0xec/0x3e0
   release_spapr_tce_table+0xd4/0x11c [kvm]
   rcu_core+0x568/0x16a0
   handle_softirqs+0x23c/0x920
   do_softirq_own_stack+0x6c/0x90
   do_softirq_own_stack+0x58/0x90
   __irq_exit_rcu+0x218/0x2d0
   irq_exit+0x30/0x80
   arch_local_irq_restore+0x128/0x230
   arch_local_irq_enable+0x1c/0x30
   cpuidle_enter_state+0x134/0x5cc
   cpuidle_enter+0x6c/0xb0
   call_cpuidle+0x7c/0x100
   do_idle+0x394/0x410
   cpu_startup_entry+0x60/0x70
   start_secondary+0x3fc/0x410
   start_secondary_prolog+0x10/0x14

Fix it by delaying the fdput() until stt is no longer in use, which is effectively the entire function. To keep the patch minimal add a call to fdput() at each of the existing return paths. Future work can convert the function to goto or __cleanup style cleanup.

With the fix in place the test case no longer triggers the UAF.

---
 arch/powerpc/kvm/book3s_64_vio.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

index 4518a0f2d6c69..ac80b49e4f011 100644
@@ -118,14 +118,16 @@ extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
 	}
 	rcu_read_unlock();
 
-	fdput(f);
-
-	if (!found)
+	if (!found) {
+		fdput(f);
 		return -EINVAL;
+	}
 
 	table_group = iommu_group_get_iommudata(grp);
-	if (WARN_ON(!table_group))
+	if (WARN_ON(!table_group)) {
+		fdput(f);
 		return -EFAULT;
+	}
 
 	for (i = 0; i < IOMMU_TABLE_GROUP_MAX_TABLES; ++i) {
 		struct iommu_table *tbltmp = table_group->tables[i];

@@ -146,8 +148,10 @@ extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
 			break;
 		}
 	}
-	if (!tbl)
+	if (!tbl) {
+		fdput(f);
 		return -EINVAL;
+	}
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(stit, &stt->iommu_tables, next) {

@@ -158,6 +162,7 @@ extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
 			/* stit is being destroyed */
 			iommu_tce_table_put(tbl);
 			rcu_read_unlock();
+			fdput(f);
 			return -ENOTTY;
 		}
 		/*

@@ -165,6 +170,7 @@ extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
 		 * its KVM reference counter and can return.
 		 */
 		rcu_read_unlock();
+		fdput(f);
 		return 0;
 	}
 	rcu_read_unlock();

@@ -172,6 +178,7 @@ extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
 	stit = kzalloc(sizeof(*stit), GFP_KERNEL);
 	if (!stit) {
 		iommu_tce_table_put(tbl);
+		fdput(f);
 		return -ENOMEM;
 	}
 

@@ -180,6 +187,7 @@ extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
 
 	list_add_rcu(&stit->next, &stt->iommu_tables);
 
+	fdput(f);
 	return 0;
 }
 

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Kailang Yang <[email protected]>

[ Upstream commit 70794b9563fe011988bcf6a081af9777e63e8d37 ]

If it enter to runtime D3 state, it didn't shutup Headset MIC pin.

---
 sound/pci/hda/patch_realtek.c | 4 ++++
 1 file changed, 4 insertions(+)

index 8a411a6fe0b7c..ff3a90e2e35cc 100644
@@ -520,10 +520,14 @@ static void alc_shutup_pins(struct hda_codec *codec)
 	switch (codec->core.vendor_id) {
 	case 0x10ec0236:
 	case 0x10ec0256:
+	case 0x10ec0257:
 	case 0x19e58326:
 	case 0x10ec0283:
+	case 0x10ec0285:
 	case 0x10ec0286:
+	case 0x10ec0287:
 	case 0x10ec0288:
+	case 0x10ec0295:
 	case 0x10ec0298:
 		alc_headset_mic_no_shutup(codec);
 		break;

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Arnd Bergmann <[email protected]>

[ Upstream commit 0d5679a0aae2d8cda72169452c32e5cb88a7ab33 ]

This is almost compatible, but passing a negative offset should result in a EINVAL error, but on mips o32 compat mode would seek to a large 32-bit byte offset.

Use compat_sys_lseek() to correctly sign-extend the argument.

---
 arch/mips/kernel/syscalls/syscall_o32.tbl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 353539ea4140a..5f2c2636e7a4f 100644
@@ -27,7 +27,7 @@
 17	o32	break				sys_ni_syscall
 # 18 was sys_stat
 18	o32	unused18			sys_ni_syscall
-19	o32	lseek				sys_lseek
+19	o32	lseek				sys_lseek			compat_sys_lseek
 20	o32	getpid				sys_getpid
 21	o32	mount				sys_mount			compat_sys_mount
 22	o32	umount				sys_oldumount

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Jonathan Denose <[email protected]>

[ Upstream commit a69ce592cbe0417664bc5a075205aa75c2ec1273 ]

The Lenovo N24 on resume becomes stuck in a state where it sends incorrect packets, causing elantech_packet_check_v4 to fail. The only way for the device to resume sending the correct packets is for it to be disabled and then re-enabled.

This change adds a dmi check to trigger this behavior on resume.

---
 drivers/input/mouse/elantech.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

index 9ff89bfda7a24..8e286e023916f 100644
@@ -1476,16 +1476,47 @@ static void elantech_disconnect(struct psmouse *psmouse)
 	psmouse->private = NULL;
 }
 
+/*
+ * Some hw_version 4 models fail to properly activate absolute mode on
+ * resume without going through disable/enable cycle.
+ */
+static const struct dmi_system_id elantech_needs_reenable[] = {
+#if defined(CONFIG_DMI) && defined(CONFIG_X86)
+	{
+		/* Lenovo N24 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "81AF"),
+		},
+	},
+#endif
+	{ }
+};
+
 /*
  * Put the touchpad back into absolute mode when reconnecting
  */
 static int elantech_reconnect(struct psmouse *psmouse)
 {
+	int err;
+
 	psmouse_reset(psmouse);
 
 	if (elantech_detect(psmouse, 0))
 		return -1;
 
+	if (dmi_check_system(elantech_needs_reenable)) {
+		err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE);
+		if (err)
+			psmouse_warn(psmouse, "failed to deactivate mouse on %s: %d\n",
+				     psmouse->ps2dev.serio->phys, err);
+
+		err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE);
+		if (err)
+			psmouse_warn(psmouse, "failed to reactivate mouse on %s: %d\n",
+				     psmouse->ps2dev.serio->phys, err);
+	}
+
 	if (elantech_set_absolute_mode(psmouse)) {
 		psmouse_err(psmouse,
 			    "failed to put touchpad back into absolute mode.\n");

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Thomas GENTY <[email protected]>

[ Upstream commit e3209a1827646daaab744aa6a5767b1f57fb5385 ]

When headphones are plugged in, they appear absent; when they are removed, they appear present.
Add a specific entry in bytcr_rt5640 for this device

---
 sound/soc/intel/boards/bytcr_rt5640.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

index c740dec00f83b..057ecfe2c8b5c 100644
@@ -465,6 +465,17 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
 					BYT_RT5640_SSP0_AIF1 |
 					BYT_RT5640_MCLK_EN),
 	},
+	{
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ARCHOS"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ARCHOS 101 CESIUM"),
+		},
+		.driver_data = (void *)(BYTCR_INPUT_DEFAULTS |
+					BYT_RT5640_JD_NOT_INV |
+					BYT_RT5640_DIFF_MIC |
+					BYT_RT5640_SSP0_AIF1 |
+					BYT_RT5640_MCLK_EN),
+	},
 	{
 		.matches = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ARCHOS"),

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Jai Luthra <[email protected]>

[ Upstream commit c5dcf8ab10606e76c1d8a0ec77f27d84a392e874 ]

The minimum period size was enforced to 64 as older devices integrating McASP with EDMA used an internal FIFO of 64 samples.

With UDMA based platforms this internal McASP FIFO is optional, as the DMA engine internally does some buffering which is already accounted for when registering the platform. So we should read the actual FIFO configuration (txnumevt/rxnumevt) instead of hardcoding frames.min to 64.

---
 sound/soc/ti/davinci-mcasp.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

index dc40b5c5d501e..b7a0806772027 100644
@@ -1422,10 +1422,11 @@ static int davinci_mcasp_hw_rule_min_periodsize(
 {
 	struct snd_interval *period_size = hw_param_interval(params,
 						SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
+	u8 numevt = *((u8 *)rule->private);
 	struct snd_interval frames;
 
 	snd_interval_any(&frames);
-	frames.min = 64;
+	frames.min = numevt;
 	frames.integer = 1;
 
 	return snd_interval_refine(period_size, &frames);

@@ -1440,6 +1441,7 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream,
 	u32 max_channels = 0;
 	int i, dir, ret;
 	int tdm_slots = mcasp->tdm_slots;
+	u8 *numevt;
 
 	/* Do not allow more then one stream per direction */
 	if (mcasp->substreams[substream->stream])

@@ -1539,9 +1541,12 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream,
 			return ret;
 	}
 
+	numevt = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
+			 &mcasp->txnumevt :
+			 &mcasp->rxnumevt;
 	snd_pcm_hw_rule_add(substream->runtime, 0,
 			    SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-			    davinci_mcasp_hw_rule_min_periodsize, NULL,
+			    davinci_mcasp_hw_rule_min_periodsize, numevt,
 			    SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1);
 
 	return 0;

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Primoz Fiser <[email protected]>

[ Upstream commit 524d3f126362b6033e92cbe107ae2158d7fbff94 ]

Set driver name to "HDMI". This simplifies the code and gets rid of the following error messages:

ASoC: driver name too long 'HDMI 58040000.encoder' -> 'HDMI_58040000_e'

---
 sound/soc/ti/omap-hdmi.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

index def2a0ce88863..e4f661c5349ef 100644
@@ -353,11 +353,7 @@ static int omap_hdmi_audio_probe(struct platform_device *pdev)
 	if (!card)
 		return -ENOMEM;
 
-	card->name = devm_kasprintf(dev, GFP_KERNEL,
-				    "HDMI %s", dev_name(ad->dssdev));
-	if (!card->name)
-		return -ENOMEM;
-
+	card->name = "HDMI";
 	card->owner = THIS_MODULE;
 	card->dai_link =
 		devm_kzalloc(dev, sizeof(*(card->dai_link)), GFP_KERNEL);

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Chen Ni <[email protected]>

[ Upstream commit 0d34d8163fd87978a6abd792e2d8ad849f4c3d57 ]

As the potential failure of usb_submit_urb(), it should be better to return the err variable to catch the error.

---
 drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 411b3adb1d9ea..a96b223984070 100644
@@ -266,7 +266,7 @@ int kvaser_usb_send_cmd_async(struct kvaser_usb_net_priv *priv, void *cmd,
 	}
 	usb_free_urb(urb);
 
-	return 0;
+	return err;
 }
 
 int kvaser_usb_can_rx_over_error(struct net_device *netdev)

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Ian Ray <[email protected]>

[ Upstream commit bfc6444b57dc7186b6acc964705d7516cbaf3904 ]

Ensure that `i2c_lock' is held when setting interrupt latch and mask in pca953x_irq_bus_sync_unlock() in order to avoid races.

The other (non-probe) call site pca953x_gpio_set_multiple() ensures the lock is held before calling pca953x_write_regs().

The problem occurred when a request raced against irq_bus_sync_unlock() approximately once per thousand reboots on an i.MX8MP based system.

* Normal case

   0-0022: write register AI|3a {03,02,00,00,01} Input latch P0
   0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0
   0-0022: write register AI|08 {ff,00,00,00,00} Output P3
   0-0022: write register AI|12 {fc,00,00,00,00} Config P3

* Race case

   0-0022: write register AI|08 {ff,00,00,00,00} Output P3
   0-0022: write register AI|08 {03,02,00,00,01} *** Wrong register ***
   0-0022: write register AI|12 {fc,00,00,00,00} Config P3
   0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0

---
 drivers/gpio/gpio-pca953x.c | 2 ++
 1 file changed, 2 insertions(+)

index c81d73d5e0159..d4c81373929af 100644
@@ -696,6 +696,8 @@ static void pca953x_irq_bus_sync_unlock(struct irq_data *d)
 	pca953x_read_regs(chip, chip->regs->direction, reg_direction);
 
 	if (chip->driver_data & PCA_PCAL) {
+		guard(mutex)(&chip->i2c_lock);
+
 		/* Enable latch on interrupt-enabled inputs */
 		pca953x_write_regs(chip, PCAL953X_IN_LATCH, chip->irq_mask);
 

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Heiko Carstens <[email protected]>

[ Upstream commit 6434b33faaa063df500af355ee6c3942e0f8d982 ]

If sclp_init() fails it only partially cleans up: if there are multiple failing calls to sclp_init() sclp_state_change_event will be added several times to sclp_reg_list, which results in the following warning:

------------[ cut here ]------------
list_add double add: new=000003ffe1598c10, prev=000003ffe1598bf0, next=000003ffe1598c10.
WARNING: CPU: 0 PID: 1 at lib/list_debug.c:35 __list_add_valid_or_report+0xde/0xf8
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.10.0-rc3
Krnl PSW : 0404c00180000000 000003ffe0d6076a (__list_add_valid_or_report+0xe2/0xf8)
           R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 RI:0 EA:3
...
Call Trace:
 [<000003ffe0d6076a>] __list_add_valid_or_report+0xe2/0xf8
([<000003ffe0d60766>] __list_add_valid_or_report+0xde/0xf8)
 [<000003ffe0a8d37e>] sclp_init+0x40e/0x450
 [<000003ffe00009f2>] do_one_initcall+0x42/0x1e0
 [<000003ffe15b77a6>] do_initcalls+0x126/0x150
 [<000003ffe15b7a0a>] kernel_init_freeable+0x1ba/0x1f8
 [<000003ffe0d6650e>] kernel_init+0x2e/0x180
 [<000003ffe000301c>] __ret_from_fork+0x3c/0x60
 [<000003ffe0d759ca>] ret_from_fork+0xa/0x30

Fix this by removing sclp_state_change_event from sclp_reg_list when sclp_init() fails.

---
 drivers/s390/char/sclp.c | 1 +
 1 file changed, 1 insertion(+)

index d2ab3f07c008c..8296e6bc229ee 100644
@@ -1208,6 +1208,7 @@ sclp_init(void)
 fail_unregister_reboot_notifier:
 	unregister_reboot_notifier(&sclp_reboot_notifier);
 fail_init_state_uninitialized:
+	list_del(&sclp_state_change_event.list);
 	sclp_init_state = sclp_init_state_uninitialized;
 	free_page((unsigned long) sclp_read_sccb);
 	free_page((unsigned long) sclp_init_sccb);

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Shengjiu Wang <[email protected]>

[ Upstream commit 6a7db25aad8ce6512b366d2ce1d0e60bac00a09d ]

When dmaengine supports pause function, in suspend state, dmaengine_pause() is called instead of dmaengine_terminate_async(),

In end of playback stream, the runtime->state will go to SNDRV_PCM_STATE_DRAINING, if system suspend & resume happen at this time, application will not resume playback stream, the stream will be closed directly, the dmaengine_terminate_async() will not be called before the dmaengine_synchronize(), which violates the call sequence for dmaengine_synchronize().

This behavior also happens for capture streams, but there is no SNDRV_PCM_STATE_DRAINING state for capture. So use dmaengine_tx_status() to check the DMA status if the status is DMA_PAUSED, then call dmaengine_terminate_async() to terminate dmaengine before dmaengine_synchronize().

---
 sound/core/pcm_dmaengine.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

index 5d9a24ca6f3ec..6c0d0a43baa11 100644
@@ -345,6 +345,12 @@ EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open_request_chan);
 int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream)
 {
 	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
+	struct dma_tx_state state;
+	enum dma_status status;
+
+	status = dmaengine_tx_status(prtd->dma_chan, prtd->cookie, &state);
+	if (status == DMA_PAUSED)
+		dmaengine_terminate_async(prtd->dma_chan);
 
 	dmaengine_synchronize(prtd->dma_chan);
 	kfree(prtd);

@@ -362,6 +368,12 @@ EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close);
 int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream)
 {
 	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
+	struct dma_tx_state state;
+	enum dma_status status;
+
+	status = dmaengine_tx_status(prtd->dma_chan, prtd->cookie, &state);
+	if (status == DMA_PAUSED)
+		dmaengine_terminate_async(prtd->dma_chan);
 
 	dmaengine_synchronize(prtd->dma_chan);
 	dma_release_channel(prtd->dma_chan);

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Daniele Palmas <[email protected]>

[ Upstream commit 77453e2b015b5ced5b3f45364dd5a72dfc3bdecb ]

Add the following Telit FN912 compositions:

0x3000: rmnet + tty (AT/NMEA) + tty (AT) + tty (diag)

T:  Bus=03 Lev=01 Prnt=03 Port=07 Cnt=01 Dev#=  8 Spd=480  MxCh= 0
D:  Ver= 2.01 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1bc7 ProdID=3000 Rev=05.15
S:  Manufacturer=Telit Cinterion
S:  Product=FN912
S:  SerialNumber=92c4c4d8
C:  #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan
E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=32ms
I:  If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=60 Driver=option
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=84(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=86(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
I:  If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms

0x3001: rmnet + tty (AT) + tty (diag) + DPL (data packet logging) + adb

T:  Bus=03 Lev=01 Prnt=03 Port=07 Cnt=01 Dev#=  7 Spd=480  MxCh= 0
D:  Ver= 2.01 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1bc7 ProdID=3001 Rev=05.15
S:  Manufacturer=Telit Cinterion
S:  Product=FN912
S:  SerialNumber=92c4c4d8
C:  #Ifs= 5 Cfg#= 1 Atr=e0 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan
E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=32ms
I:  If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=84(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:  If#= 3 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=80 Driver=(none)
E:  Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:  If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=usbfs
E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms

---
 drivers/net/usb/qmi_wwan.c | 2 ++
 1 file changed, 2 insertions(+)

index 7cad9850e6f15..17aa52ed892b5 100644
@@ -1334,6 +1334,8 @@ static const struct usb_device_id products[] = {
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1260, 2)},	/* Telit LE910Cx */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1261, 2)},	/* Telit LE910Cx */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1900, 1)},	/* Telit LN940 series */
+	{QMI_QUIRK_SET_DTR(0x1bc7, 0x3000, 0)},	/* Telit FN912 series */
+	{QMI_QUIRK_SET_DTR(0x1bc7, 0x3001, 0)},	/* Telit FN912 series */
 	{QMI_FIXED_INTF(0x1c9e, 0x9801, 3)},	/* Telewell TW-3G HSPA+ */
 	{QMI_FIXED_INTF(0x1c9e, 0x9803, 4)},	/* Telewell TW-3G HSPA+ */
 	{QMI_FIXED_INTF(0x1c9e, 0x9b01, 3)},	/* XS Stick W100-2 from 4G Systems */

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Yunshui Jiang <[email protected]>

[ Upstream commit b8ec0dc3845f6c9089573cb5c2c4b05f7fc10728 ]

mac802154 devices update their dev->stats fields locklessly. Therefore these counters should be updated atomically. Adopt SMP safe DEV_STATS_INC() and DEV_STATS_ADD() to achieve this.

Message-ID: <[email protected]>

---
 net/mac802154/tx.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

index c829e4a753256..7cea95d0b78f9 100644
@@ -34,8 +34,8 @@ void ieee802154_xmit_worker(struct work_struct *work)
 	if (res)
 		goto err_tx;
 
-	dev->stats.tx_packets++;
-	dev->stats.tx_bytes += skb->len;
+	DEV_STATS_INC(dev, tx_packets);
+	DEV_STATS_ADD(dev, tx_bytes, skb->len);
 
 	ieee802154_xmit_complete(&local->hw, skb, false);
 

@@ -86,8 +86,8 @@ ieee802154_tx(struct ieee802154_local *local, struct sk_buff *skb)
 			goto err_tx;
 		}
 
-		dev->stats.tx_packets++;
-		dev->stats.tx_bytes += len;
+		DEV_STATS_INC(dev, tx_packets);
+		DEV_STATS_ADD(dev, tx_bytes, len);
 	} else {
 		local->tx_skb = skb;
 		queue_work(local->workqueue, &local->tx_work);

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Anjali K <[email protected]>

[ Upstream commit 1a14150e1656f7a332a943154fc486504db4d586 ]

Reading the dispatch trace log from /sys/kernel/debug/powerpc/dtl/cpu-* results in a BUG() when the config CONFIG_HARDENED_USERCOPY is enabled as shown below.

    kernel BUG at mm/usercopy.c:102!
    Oops: Exception in kernel mode, sig: 5 [#1]
    LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries
    Modules linked in: xfs libcrc32c dm_service_time sd_mod t10_pi sg ibmvfc
    scsi_transport_fc ibmveth pseries_wdt dm_multipath dm_mirror dm_region_hash dm_log dm_mod fuse
    CPU: 27 PID: 1815 Comm: python3 Not tainted 6.10.0-rc3 #85
    Hardware name: IBM,9040-MRX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NM1060_042) hv:phyp pSeries
    NIP:  c0000000005d23d4 LR: c0000000005d23d0 CTR: 00000000006ee6f8
    REGS: c000000120c078c0 TRAP: 0700   Not tainted  (6.10.0-rc3)
    MSR:  8000000000029033 <SF,EE,ME,IR,DR,RI,LE>  CR: 2828220f  XER: 0000000e
    CFAR: c0000000001fdc80 IRQMASK: 0
    [ ... GPRs omitted ... ]
    NIP [c0000000005d23d4] usercopy_abort+0x78/0xb0
    LR [c0000000005d23d0] usercopy_abort+0x74/0xb0
    Call Trace:
     usercopy_abort+0x74/0xb0 (unreliable)
     __check_heap_object+0xf8/0x120
     check_heap_object+0x218/0x240
     __check_object_size+0x84/0x1a4
     dtl_file_read+0x17c/0x2c4
     full_proxy_read+0x8c/0x110
     vfs_read+0xdc/0x3a0
     ksys_read+0x84/0x144
     system_call_exception+0x124/0x330
     system_call_vectored_common+0x15c/0x2ec
    --- interrupt: 3000 at 0x7fff81f3ab34

Commit 6d07d1cd300f ("usercopy: Restrict non-usercopy caches to size 0") requires that only whitelisted areas in slab/slub objects can be copied to userspace when usercopy hardening is enabled using CONFIG_HARDENED_USERCOPY. Dtl contains hypervisor dispatch events which are expected to be read by privileged users. Hence mark this safe for user access.
Specify useroffset=0 and usersize=DISPATCH_LOG_BYTES to whitelist the entire object.

---
 arch/powerpc/platforms/pseries/setup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index d5abb25865e36..bc1a4e024529b 100644
@@ -305,8 +305,8 @@ static int alloc_dispatch_log_kmem_cache(void)
 {
 	void (*ctor)(void *) = get_dtl_cache_ctor();
 
-	dtl_cache = kmem_cache_create("dtl", DISPATCH_LOG_BYTES,
-						DISPATCH_LOG_BYTES, 0, ctor);
+	dtl_cache = kmem_cache_create_usercopy("dtl", DISPATCH_LOG_BYTES,
+						DISPATCH_LOG_BYTES, 0, 0, DISPATCH_LOG_BYTES, ctor);
 	if (!dtl_cache) {
 		pr_warn("Failed to create dispatch trace log buffer cache\n");
 		pr_warn("Stolen time statistics will be unreliable\n");

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Ganesh Goudar <[email protected]>

[ Upstream commit a1216e62d039bf63a539bbe718536ec789a853dd ]

If a PCI device is removed during eeh_pe_report_edev(), edev->pdev will change and can cause a crash, hold the PCI rescan/remove lock while taking a copy of edev->pdev->bus.

---
 arch/powerpc/kernel/eeh_pe.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

index 177852e39a253..4b6b1846e4d23 100644
@@ -922,6 +922,7 @@ struct pci_bus *eeh_pe_bus_get(struct eeh_pe *pe)
 {
 	struct eeh_dev *edev;
 	struct pci_dev *pdev;
+	struct pci_bus *bus = NULL;
 
 	if (pe->type & EEH_PE_PHB)
 		return pe->phb->bus;

@@ -932,9 +933,11 @@ struct pci_bus *eeh_pe_bus_get(struct eeh_pe *pe)
 
 	/* Retrieve the parent PCI bus of first (top) PCI device */
 	edev = list_first_entry_or_null(&pe->edevs, struct eeh_dev, entry);
+	pci_lock_rescan_remove();
 	pdev = eeh_dev_to_pci_dev(edev);
 	if (pdev)
-		return pdev->bus;
+		bus = pdev->bus;
+	pci_unlock_rescan_remove();
 
-	return NULL;
+	return bus;
 }

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Xingui Yang <[email protected]>

[ Upstream commit ab2068a6fb84751836a84c26ca72b3beb349619d ]

The expander phy will be treated as broadcast flutter in the next revalidation after the exp-attached end device probe failed, as follows:

[78779.654026] sas: broadcast received: 0
[78779.654037] sas: REVALIDATING DOMAIN on port 0, pid:10
[78779.654680] sas: ex 500e004aaaaaaa1f phy05 change count has changed
[78779.662977] sas: ex 500e004aaaaaaa1f phy05 originated BROADCAST(CHANGE)
[78779.662986] sas: ex 500e004aaaaaaa1f phy05 new device attached
[78779.663079] sas: ex 500e004aaaaaaa1f phy05:U:8 attached: 500e004aaaaaaa05 (stp)
[78779.693542] hisi_sas_v3_hw 0000:b4:02.0: dev[16:5] found
[78779.701155] sas: done REVALIDATING DOMAIN on port 0, pid:10, res 0x0
[78779.707864] sas: Enter sas_scsi_recover_host busy: 0 failed: 0
...
[78835.161307] sas: --- Exit sas_scsi_recover_host: busy: 0 failed: 0 tries: 1
[78835.171344] sas: sas_probe_sata: for exp-attached device 500e004aaaaaaa05 returned -19
[78835.180879] hisi_sas_v3_hw 0000:b4:02.0: dev[16:5] is gone
[78835.187487] sas: broadcast received: 0
[78835.187504] sas: REVALIDATING DOMAIN on port 0, pid:10
[78835.188263] sas: ex 500e004aaaaaaa1f phy05 change count has changed
[78835.195870] sas: ex 500e004aaaaaaa1f phy05 originated BROADCAST(CHANGE)
[78835.195875] sas: ex 500e004aaaaaaa1f rediscovering phy05
[78835.196022] sas: ex 500e004aaaaaaa1f phy05:U:A attached: 500e004aaaaaaa05 (stp)
[78835.196026] sas: ex 500e004aaaaaaa1f phy05 broadcast flutter
[78835.197615] sas: done REVALIDATING DOMAIN on port 0, pid:10, res 0x0

The cause of the problem is that the related ex_phy's attached_sas_addr was not cleared after the end device probe failed, so reset it.

---
 drivers/scsi/libsas/sas_internal.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

index 01f1738ce6dff..3fb8a64f571d5 100644
@@ -111,6 +111,20 @@ static inline void sas_fail_probe(struct domain_device *dev, const char *func, i
 		func, dev->parent ? "exp-attached" :
 		"direct-attached",
 		SAS_ADDR(dev->sas_addr), err);
+
+	/*
+	 * If the device probe failed, the expander phy attached address
+	 * needs to be reset so that the phy will not be treated as flutter
+	 * in the next revalidation
+	 */
+	if (dev->parent && !dev_is_expander(dev->dev_type)) {
+		struct sas_phy *phy = dev->phy;
+		struct domain_device *parent = dev->parent;
+		struct ex_phy *ex_phy = &parent->ex_dev.ex_phy[phy->number];
+
+		memset(ex_phy->attached_sas_addr, 0, SAS_ADDR_SIZE);
+	}
+
 	sas_unregister_dev(dev->port, dev);
 }
 

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Tetsuo Handa <[email protected]>

[ Upstream commit 0d151a103775dd9645c78c97f77d6e2a5298d913 ]

syzbot is reporting that calling hci_release_dev() from hci_error_reset() due to hci_dev_put() from hci_error_reset() can cause deadlock at destroy_workqueue(), for hci_error_reset() is called from hdev->req_workqueue which destroy_workqueue() needs to flush.

We need to make sure that hdev->{rx_work,cmd_work,tx_work} which are queued into hdev->workqueue and hdev->{power_on,error_reset} which are queued into hdev->req_workqueue are no longer running by the moment

       destroy_workqueue(hdev->workqueue);
       destroy_workqueue(hdev->req_workqueue);

are called from hci_release_dev().

Call cancel_work_sync() on these work items from hci_unregister_dev() as soon as hdev->list is removed from hci_dev_list.

---
 net/bluetooth/hci_core.c | 4 ++++
 1 file changed, 4 insertions(+)

index c60204b639ab7..71a7e42097cc0 100644
@@ -3412,7 +3412,11 @@ void hci_unregister_dev(struct hci_dev *hdev)
 	list_del(&hdev->list);
 	write_unlock(&hci_dev_list_lock);
 
+	cancel_work_sync(&hdev->rx_work);
+	cancel_work_sync(&hdev->cmd_work);
+	cancel_work_sync(&hdev->tx_work);
 	cancel_work_sync(&hdev->power_on);
+	cancel_work_sync(&hdev->error_reset);
 
 	hci_dev_do_close(hdev);
 

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Christian Brauner <[email protected]>

[ Upstream commit 391b59b045004d5b985d033263ccba3e941a7740 ]

Jan reported that 'cd ..' may take a long time in deep directory hierarchies under a bind-mount. If concurrent renames happen it is possible to livelock in is_subdir() because it will keep retrying.

Change is_subdir() from simply retrying over and over to retry once and then acquire the rename lock to handle deep ancestor chains better. The list of alternatives to this approach were less then pleasant. Change the scope of rcu lock to cover the whole walk while at it.

A big thanks to Jan and Linus. Both Jan and Linus had proposed effectively the same thing just that one version ended up being slightly more elegant.

---
 fs/dcache.c | 31 ++++++++++++++-----------------
 1 file changed, 14 insertions(+), 17 deletions(-)

index c58b5e5cb045d..78081bdc49311 100644
@@ -3073,28 +3073,25 @@ EXPORT_SYMBOL(d_splice_alias);
   
 bool is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
 {
-	bool result;
+	bool subdir;
 	unsigned seq;
 
 	if (new_dentry == old_dentry)
 		return true;
 
-	do {
-		/* for restarting inner loop in case of seq retry */
-		seq = read_seqbegin(&rename_lock);
-		/*
-		 * Need rcu_readlock to protect against the d_parent trashing
-		 * due to d_move
-		 */
-		rcu_read_lock();
-		if (d_ancestor(old_dentry, new_dentry))
-			result = true;
-		else
-			result = false;
-		rcu_read_unlock();
-	} while (read_seqretry(&rename_lock, seq));
-
-	return result;
+	/* Access d_parent under rcu as d_move() may change it. */
+	rcu_read_lock();
+	seq = read_seqbegin(&rename_lock);
+	subdir = d_ancestor(old_dentry, new_dentry);
+	 /* Try lockless once... */
+	if (read_seqretry(&rename_lock, seq)) {
+		/* ...else acquire lock for progress even on deep chains. */
+		read_seqlock_excl(&rename_lock);
+		subdir = d_ancestor(old_dentry, new_dentry);
+		read_sequnlock_excl(&rename_lock);
+	}
+	rcu_read_unlock();
+	return subdir;
 }
 EXPORT_SYMBOL(is_subdir);
 

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Uwe Kleine-König <[email protected]>

[ Upstream commit ce1dac560a74220f2e53845ec0723b562288aed4 ]

While in commit 2dd33f9cec90 ("spi: imx: support DMA for imx35") it was claimed that DMA works on i.MX25, i.MX31 and i.MX35 the respective device trees don't add DMA channels. The Reference manuals of i.MX31 and i.MX25 also don't mention the CSPI core being DMA capable. (I didn't check the others.)

Since commit e267a5b3ec59 ("spi: spi-imx: Use dev_err_probe for failed DMA channel requests") this results in an error message

spi_imx 43fa4000.spi: error -ENODEV: can't get the TX DMA channel!

during boot. However that isn't fatal and the driver gets loaded just fine, just without using DMA.

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

index 67f31183c1180..8c9bafee58f9f 100644
@@ -993,7 +993,7 @@ static struct spi_imx_devtype_data imx35_cspi_devtype_data = {
 	.rx_available = mx31_rx_available,
 	.reset = mx31_reset,
 	.fifo_size = 8,
-	.has_dmamode = true,
+	.has_dmamode = false,
 	.dynamic_burst = false,
 	.has_slavemode = false,
 	.devtype = IMX35_CSPI,

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: John Hubbard <[email protected]>

[ Upstream commit 73810cd45b99c6c418e1c6a487b52c1e74edb20d ]

When building with clang, via:

make LLVM=1 -C tools/testing/selftests

...there are several warnings, and an error. This fixes all of those and allows these tests to run and pass.

1. Fix linker error (undefined reference to memcpy) by providing a local version of memcpy.

2. clang complains about using this form:

    if (g = h & 0xf0000000)

...so factor out the assignment into a separate step.

3. The code is passing a signed const char* to elf_hash(), which expects a const unsigned char *. There are several callers, so fix this at the source by allowing the function to accept a signed argument, and then converting to unsigned operations, once inside the function.

4. clang doesn't have __attribute__((externally_visible)) and generates a warning to that effect. Fortunately, gcc 12 and gcc 13 do not seem to require that attribute in order to build, run and pass tests here, so remove it.

---
 tools/testing/selftests/vDSO/parse_vdso.c      | 16 +++++++++++-----
 .../selftests/vDSO/vdso_standalone_test_x86.c  | 18 ++++++++++++++++--
 2 files changed, 27 insertions(+), 7 deletions(-)

index 1dbb4b87268fa..9ef3ad3789c17 100644
@@ -77,14 +77,20 @@ static struct vdso_info
 	ELF(Verdef) *verdef;
 } vdso_info;
 
-/* Straight from the ELF specification. */
-static unsigned long elf_hash(const unsigned char *name)
+/*
+ * Straight from the ELF specification...and then tweaked slightly, in order to
+ * avoid a few clang warnings.
+ */
+static unsigned long elf_hash(const char *name)
 {
 	unsigned long h = 0, g;
-	while (*name)
+	const unsigned char *uch_name = (const unsigned char *)name;
+
+	while (*uch_name)
 	{
-		h = (h << 4) + *name++;
-		if (g = h & 0xf0000000)
+		h = (h << 4) + *uch_name++;
+		g = h & 0xf0000000;
+		if (g)
 			h ^= g >> 24;
 		h &= ~g;
 	}

index 5ac4b00acfbcd..64c369fa43893 100644
@@ -20,7 +20,7 @@ extern void *vdso_sym(const char *version, const char *name);
 extern void vdso_init_from_sysinfo_ehdr(uintptr_t base);
 extern void vdso_init_from_auxv(void *auxv);
 
-/* We need a libc functions... */
+/* We need some libc functions... */
 int strcmp(const char *a, const char *b)
 {
 	/* This implementation is buggy: it never returns -1. */

@@ -36,6 +36,20 @@ int strcmp(const char *a, const char *b)
 	return 0;
 }
 
+/*
+ * The clang build needs this, although gcc does not.
+ * Stolen from lib/string.c.
+ */
+void *memcpy(void *dest, const void *src, size_t count)
+{
+	char *tmp = dest;
+	const char *s = src;
+
+	while (count--)
+		*tmp++ = *s++;
+	return dest;
+}
+
 /* ...and two syscalls.  This is x86-specific. */
 static inline long x86_syscall3(long nr, long a0, long a1, long a2)
 {

@@ -72,7 +86,7 @@ void to_base10(char *lastdig, time_t n)
 	}
 }
 
-__attribute__((externally_visible)) void c_main(void **stack)
+void c_main(void **stack)
 {
 	/* Parse the stack */
 	long argc = (long)*stack;

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Edward Adam Davis <[email protected]>

[ Upstream commit 0570730c16307a72f8241df12363f76600baf57d ]

[syzbot reported]

BUG: KMSAN: uninit-value in sized_strscpy+0xc4/0x160
 sized_strscpy+0xc4/0x160
 copy_name+0x2af/0x320 fs/hfsplus/xattr.c:411
 hfsplus_listxattr+0x11e9/0x1a50 fs/hfsplus/xattr.c:750
 vfs_listxattr fs/xattr.c:493 [inline]
 listxattr+0x1f3/0x6b0 fs/xattr.c:840
 path_listxattr fs/xattr.c:864 [inline]
 __do_sys_listxattr fs/xattr.c:876 [inline]
 __se_sys_listxattr fs/xattr.c:873 [inline]
 __x64_sys_listxattr+0x16b/0x2f0 fs/xattr.c:873
 x64_sys_call+0x2ba0/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:195
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:

 slab_post_alloc_hook mm/slub.c:3877 [inline]
 slab_alloc_node mm/slub.c:3918 [inline]
 kmalloc_trace+0x57b/0xbe0 mm/slub.c:4065
 kmalloc include/linux/slab.h:628 [inline]
 hfsplus_listxattr+0x4cc/0x1a50 fs/hfsplus/xattr.c:699
 vfs_listxattr fs/xattr.c:493 [inline]
 listxattr+0x1f3/0x6b0 fs/xattr.c:840
 path_listxattr fs/xattr.c:864 [inline]
 __do_sys_listxattr fs/xattr.c:876 [inline]
 __se_sys_listxattr fs/xattr.c:873 [inline]
 __x64_sys_listxattr+0x16b/0x2f0 fs/xattr.c:873
 x64_sys_call+0x2ba0/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:195
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

[Fix]
When allocating memory to strbuf, initialize memory to 0.

---
 fs/hfsplus/xattr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index bb0b27d88e502..d91f76ef18d9b 100644
@@ -700,7 +700,7 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size)
 		return err;
 	}
 
-	strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN +
+	strbuf = kzalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN +
 			XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL);
 	if (!strbuf) {
 		res = -ENOMEM;

2.43.0

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Masahiro Yamada <[email protected]>

commit 24d3ba0a7b44c1617c27f5045eecc4f34752ab03 upstream.

The 32-bit ARM kernel stops working if the kernel grows to the point where veneers for __get_user_* are created.

AAPCS32 [1] states, "Register r12 (IP) may be used by a linker as a scratch register between a routine and any subroutine it calls. It can also be used within a routine to hold intermediate values between subroutine calls."

However, bl instructions buried within the inline asm are unpredictable for compilers; hence, "ip" must be added to the clobber list.

This becomes critical when veneers for __get_user_* are created because veneers use the ip register since commit 02e541db0540 ("ARM: 8323/1:
force linker to use PIC veneers").

[1]: https://github.com/ARM-software/abi-aa/blob/2023Q1/aapcs32/aapcs32.rst

---
 arch/arm/include/asm/uaccess.h |   14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

@@ -143,16 +143,6 @@ extern int __get_user_64t_1(void *);
 extern int __get_user_64t_2(void *);
 extern int __get_user_64t_4(void *);
 
-#define __GUP_CLOBBER_1	"lr", "cc"
-#ifdef CONFIG_CPU_USE_DOMAINS
-#define __GUP_CLOBBER_2	"ip", "lr", "cc"
-#else
-#define __GUP_CLOBBER_2 "lr", "cc"
-#endif
-#define __GUP_CLOBBER_4	"lr", "cc"
-#define __GUP_CLOBBER_32t_8 "lr", "cc"
-#define __GUP_CLOBBER_8	"lr", "cc"
-
 #define __get_user_x(__r2, __p, __e, __l, __s)				\
 	   __asm__ __volatile__ (					\
 		__asmeq("%0", "r0") __asmeq("%1", "r2")			\

@@ -160,7 +150,7 @@ extern int __get_user_64t_4(void *);
 		"bl	__get_user_" #__s				\
 		: "=&r" (__e), "=r" (__r2)				\
 		: "0" (__p), "r" (__l)					\
-		: __GUP_CLOBBER_##__s)
+		: "ip", "lr", "cc")
 
 /* narrowing a double-word get into a single 32bit word register: */
 #ifdef __ARMEB__

@@ -182,7 +172,7 @@ extern int __get_user_64t_4(void *);
 		"bl	__get_user_64t_" #__s				\
 		: "=&r" (__e), "=r" (__r2)				\
 		: "0" (__p), "r" (__l)					\
-		: __GUP_CLOBBER_##__s)
+		: "ip", "lr", "cc")
 #else
 #define __get_user_x_64t __get_user_x
 #endif

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Kuan-Wei Chiu <[email protected]>

commit 233323f9b9f828cd7cd5145ad811c1990b692542 upstream.

The acpi_cst_latency_cmp() comparison function currently used for sorting C-state latencies does not satisfy transitivity, causing incorrect sorting results.

Specifically, if there are two valid acpi_processor_cx elements A and B and one invalid element C, it may occur that A < B, A = C, and B = C. Sorting algorithms assume that if A < B and A = C, then C < B, leading to incorrect ordering.

Given the small size of the array (<=8), we replace the library sort function with a simple insertion sort that properly ignores invalid elements and sorts valid ones based on latency. This change ensures correct ordering of the C-state latencies.

---
 drivers/acpi/processor_idle.c |   40 ++++++++++++++++------------------------
 1 file changed, 16 insertions(+), 24 deletions(-)

@@ -16,7 +16,6 @@
 #include <linux/acpi.h>
 #include <linux/dmi.h>
 #include <linux/sched.h>       /* need_resched() */
-#include <linux/sort.h>
 #include <linux/tick.h>
 #include <linux/cpuidle.h>
 #include <linux/cpu.h>

@@ -541,28 +540,24 @@ static void acpi_processor_power_verify_
 	return;
 }
 
-static int acpi_cst_latency_cmp(const void *a, const void *b)
+static void acpi_cst_latency_sort(struct acpi_processor_cx *states, size_t length)
 {
-	const struct acpi_processor_cx *x = a, *y = b;
+	int i, j, k;
 
-	if (!(x->valid && y->valid))
-		return 0;
-	if (x->latency > y->latency)
-		return 1;
-	if (x->latency < y->latency)
-		return -1;
-	return 0;
-}
-static void acpi_cst_latency_swap(void *a, void *b, int n)
-{
-	struct acpi_processor_cx *x = a, *y = b;
-	u32 tmp;
+	for (i = 1; i < length; i++) {
+		if (!states[i].valid)
+			continue;
 
-	if (!(x->valid && y->valid))
-		return;
-	tmp = x->latency;
-	x->latency = y->latency;
-	y->latency = tmp;
+		for (j = i - 1, k = i; j >= 0; j--) {
+			if (!states[j].valid)
+				continue;
+
+			if (states[j].latency > states[k].latency)
+				swap(states[j].latency, states[k].latency);
+
+			k = j;
+		}
+	}
 }
 
 static int acpi_processor_power_verify(struct acpi_processor *pr)

@@ -607,10 +602,7 @@ static int acpi_processor_power_verify(s
 
 	if (buggy_latency) {
 		pr_notice("FW issue: working around C-state latencies out of order\n");
-		sort(&pr->power.states[1], max_cstate,
-		     sizeof(struct acpi_processor_cx),
-		     acpi_cst_latency_cmp,
-		     acpi_cst_latency_swap);
+		acpi_cst_latency_sort(&pr->power.states[1], max_cstate);
 	}
 
 	lapic_timer_propagate_broadcast(pr);

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Dan Carpenter <[email protected]>

commit 6769a23697f17f9bf9365ca8ed62fe37e361a05a upstream.

The "instance" variable needs to be signed for the error handling to work.

---
 drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -2003,7 +2003,7 @@ static int sdma_v4_0_process_trap_irq(st
 				      struct amdgpu_irq_src *source,
 				      struct amdgpu_iv_entry *entry)
 {
-	uint32_t instance;
+	int instance;
 
 	DRM_DEBUG("IH: SDMA trap\n");
 	instance = sdma_v4_0_irq_id_to_seq(entry->client_id);

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Paolo Abeni <[email protected]>

commit 26afda78cda3da974fd4c287962c169e9462c495 upstream.

Christoph reported the following splat:

WARNING: CPU: 1 PID: 772 at net/ipv4/af_inet.c:761 __inet_accept+0x1f4/0x4a0
Modules linked in:
CPU: 1 PID: 772 Comm: syz-executor510 Not tainted 6.9.0-rc7-g7da7119fe22b #56
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7 04/01/2014
RIP: 0010:__inet_accept+0x1f4/0x4a0 net/ipv4/af_inet.c:759
Code: 04 38 84 c0 0f 85 87 00 00 00 41 c7 04 24 03 00 00 00 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 ec b7 da fd <0f> 0b e9 7f fe ff ff e8 e0 b7 da fd 0f 0b e9 fe fe ff ff 89 d9 80
RSP: 0018:ffffc90000c2fc58 EFLAGS: 00010293
RAX: ffffffff836bdd14 RBX: 0000000000000000 RCX: ffff888104668000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff836bdb89 R09: fffff52000185f64
R10: dffffc0000000000 R11: fffff52000185f64 R12: dffffc0000000000
R13: 1ffff92000185f98 R14: ffff88810754d880 R15: ffff8881007b7800
FS:  000000001c772880(0000) GS:ffff88811b280000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb9fcf2e178 CR3: 00000001045d2002 CR4: 0000000000770ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
 <TASK>
 inet_accept+0x138/0x1d0 net/ipv4/af_inet.c:786
 do_accept+0x435/0x620 net/socket.c:1929
 __sys_accept4_file net/socket.c:1969 [inline]
 __sys_accept4+0x9b/0x110 net/socket.c:1999
 __do_sys_accept net/socket.c:2016 [inline]
 __se_sys_accept net/socket.c:2013 [inline]
 __x64_sys_accept+0x7d/0x90 net/socket.c:2013
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0x100 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x4315f9
Code: fd ff 48 81 c4 80 00 00 00 e9 f1 fe ff ff 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 ab b4 fd ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffdb26d9c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002b
RAX: ffffffffffffffda RBX: 0000000000400300 RCX: 00000000004315f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000006e1018 R08: 0000000000400300 R09: 0000000000400300
R10: 0000000000400300 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000040cdf0 R14: 000000000040ce80 R15: 0000000000000055
 </TASK>

The reproducer invokes shutdown() before entering the listener status. After commit 94062790aedb ("tcp: defer shutdown(SEND_SHUTDOWN) for TCP_SYN_RECV sockets"), the above causes the child to reach the accept syscall in FIN_WAIT1 status.

Eric noted we can relax the existing assertion in __inet_accept()

---
 net/ipv4/af_inet.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

@@ -749,7 +749,9 @@ int inet_accept(struct socket *sock, str
 	sock_rps_record_flow(sk2);
 	WARN_ON(!((1 << sk2->sk_state) &
 		  (TCPF_ESTABLISHED | TCPF_SYN_RECV |
-		  TCPF_CLOSE_WAIT | TCPF_CLOSE)));
+		   TCPF_FIN_WAIT1 | TCPF_FIN_WAIT2 |
+		   TCPF_CLOSING | TCPF_CLOSE_WAIT |
+		   TCPF_CLOSE)));
 
 	sock_graft(sk2, newsock);
 

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: lei lu <[email protected]>

commit 255547c6bb8940a97eea94ef9d464ea5967763fb upstream.

This adds sanity checks for ocfs2_dir_entry to make sure all members of ocfs2_dir_entry don't stray beyond valid memory region.

---
 fs/ocfs2/dir.c |   46 +++++++++++++++++++++++++++++-----------------
 1 file changed, 29 insertions(+), 17 deletions(-)

@@ -296,13 +296,16 @@ out:
  * bh passed here can be an inode block or a dir data block, depending
  * on the inode inline data flag.
  */
-static int ocfs2_check_dir_entry(struct inode * dir,
-				 struct ocfs2_dir_entry * de,
-				 struct buffer_head * bh,
+static int ocfs2_check_dir_entry(struct inode *dir,
+				 struct ocfs2_dir_entry *de,
+				 struct buffer_head *bh,
+				 char *buf,
+				 unsigned int size,
 				 unsigned long offset)
 {
 	const char *error_msg = NULL;
 	const int rlen = le16_to_cpu(de->rec_len);
+	const unsigned long next_offset = ((char *) de - buf) + rlen;
 
 	if (unlikely(rlen < OCFS2_DIR_REC_LEN(1)))
 		error_msg = "rec_len is smaller than minimal";

@@ -310,9 +313,11 @@ static int ocfs2_check_dir_entry(struct
 		error_msg = "rec_len % 4 != 0";
 	else if (unlikely(rlen < OCFS2_DIR_REC_LEN(de->name_len)))
 		error_msg = "rec_len is too small for name_len";
-	else if (unlikely(
-		 ((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize))
-		error_msg = "directory entry across blocks";
+	else if (unlikely(next_offset > size))
+		error_msg = "directory entry overrun";
+	else if (unlikely(next_offset > size - OCFS2_DIR_REC_LEN(1)) &&
+		 next_offset != size)
+		error_msg = "directory entry too close to end";
 
 	if (unlikely(error_msg != NULL))
 		mlog(ML_ERROR, "bad entry in directory #%llu: %s - "

@@ -354,16 +359,17 @@ static inline int ocfs2_search_dirblock(
 	de_buf = first_de;
 	dlimit = de_buf + bytes;
 
-	while (de_buf < dlimit) {
+	while (de_buf < dlimit - OCFS2_DIR_MEMBER_LEN) {
 		/* this code is executed quadratically often */
 		/* do minimal checking `by hand' */
 
 		de = (struct ocfs2_dir_entry *) de_buf;
 
-		if (de_buf + namelen <= dlimit &&
+		if (de->name + namelen <= dlimit &&
 		    ocfs2_match(namelen, name, de)) {
 			/* found a match - just to be sure, do a full check */
-			if (!ocfs2_check_dir_entry(dir, de, bh, offset)) {
+			if (!ocfs2_check_dir_entry(dir, de, bh, first_de,
+						   bytes, offset)) {
 				ret = -1;
 				goto bail;
 			}

@@ -1140,7 +1146,7 @@ static int __ocfs2_delete_entry(handle_t
 	pde = NULL;
 	de = (struct ocfs2_dir_entry *) first_de;
 	while (i < bytes) {
-		if (!ocfs2_check_dir_entry(dir, de, bh, i)) {
+		if (!ocfs2_check_dir_entry(dir, de, bh, first_de, bytes, i)) {
 			status = -EIO;
 			mlog_errno(status);
 			goto bail;

@@ -1640,7 +1646,8 @@ int __ocfs2_add_entry(handle_t *handle,
 		/* These checks should've already been passed by the
 		 * prepare function, but I guess we can leave them
 		 * here anyway. */
-		if (!ocfs2_check_dir_entry(dir, de, insert_bh, offset)) {
+		if (!ocfs2_check_dir_entry(dir, de, insert_bh, data_start,
+					   size, offset)) {
 			retval = -ENOENT;
 			goto bail;
 		}

@@ -1778,7 +1785,8 @@ static int ocfs2_dir_foreach_blk_id(stru
 		}
 
 		de = (struct ocfs2_dir_entry *) (data->id_data + ctx->pos);
-		if (!ocfs2_check_dir_entry(inode, de, di_bh, ctx->pos)) {
+		if (!ocfs2_check_dir_entry(inode, de, di_bh, (char *)data->id_data,
+					   i_size_read(inode), ctx->pos)) {
 			/* On error, skip the f_pos to the end. */
 			ctx->pos = i_size_read(inode);
 			break;

@@ -1871,7 +1879,8 @@ static int ocfs2_dir_foreach_blk_el(stru
 		while (ctx->pos < i_size_read(inode)
 		       && offset < sb->s_blocksize) {
 			de = (struct ocfs2_dir_entry *) (bh->b_data + offset);
-			if (!ocfs2_check_dir_entry(inode, de, bh, offset)) {
+			if (!ocfs2_check_dir_entry(inode, de, bh, bh->b_data,
+						   sb->s_blocksize, offset)) {
 				/* On error, skip the f_pos to the
 				   next block. */
 				ctx->pos = (ctx->pos | (sb->s_blocksize - 1)) + 1;

@@ -3343,7 +3352,7 @@ static int ocfs2_find_dir_space_id(struc
 	struct super_block *sb = dir->i_sb;
 	struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
 	struct ocfs2_dir_entry *de, *last_de = NULL;
-	char *de_buf, *limit;
+	char *first_de, *de_buf, *limit;
 	unsigned long offset = 0;
 	unsigned int rec_len, new_rec_len, free_space = dir->i_sb->s_blocksize;
 

@@ -3356,14 +3365,16 @@ static int ocfs2_find_dir_space_id(struc
 	else
 		free_space = dir->i_sb->s_blocksize - i_size_read(dir);
 
-	de_buf = di->id2.i_data.id_data;
+	first_de = di->id2.i_data.id_data;
+	de_buf = first_de;
 	limit = de_buf + i_size_read(dir);
 	rec_len = OCFS2_DIR_REC_LEN(namelen);
 
 	while (de_buf < limit) {
 		de = (struct ocfs2_dir_entry *)de_buf;
 
-		if (!ocfs2_check_dir_entry(dir, de, di_bh, offset)) {
+		if (!ocfs2_check_dir_entry(dir, de, di_bh, first_de,
+					   i_size_read(dir), offset)) {
 			ret = -ENOENT;
 			goto out;
 		}

@@ -3445,7 +3456,8 @@ static int ocfs2_find_dir_space_el(struc
 			/* move to next block */
 			de = (struct ocfs2_dir_entry *) bh->b_data;
 		}
-		if (!ocfs2_check_dir_entry(dir, de, bh, offset)) {
+		if (!ocfs2_check_dir_entry(dir, de, bh, bh->b_data, blocksize,
+					   offset)) {
 			status = -ENOENT;
 			goto bail;
 		}

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: lei lu <[email protected]>

commit d0fa70aca54c8643248e89061da23752506ec0d4 upstream.

Add a check before visiting the members of ea to make sure each ea stays within the ealist.

---
 fs/jfs/xattr.c |   23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

@@ -797,7 +797,7 @@ ssize_t __jfs_getxattr(struct inode *ino
 		       size_t buf_size)
 {
 	struct jfs_ea_list *ealist;
-	struct jfs_ea *ea;
+	struct jfs_ea *ea, *ealist_end;
 	struct ea_buffer ea_buf;
 	int xattr_size;
 	ssize_t size;

@@ -817,9 +817,16 @@ ssize_t __jfs_getxattr(struct inode *ino
 		goto not_found;
 
 	ealist = (struct jfs_ea_list *) ea_buf.xattr;
+	ealist_end = END_EALIST(ealist);
 
 	/* Find the named attribute */
-	for (ea = FIRST_EA(ealist); ea < END_EALIST(ealist); ea = NEXT_EA(ea))
+	for (ea = FIRST_EA(ealist); ea < ealist_end; ea = NEXT_EA(ea)) {
+		if (unlikely(ea + 1 > ealist_end) ||
+		    unlikely(NEXT_EA(ea) > ealist_end)) {
+			size = -EUCLEAN;
+			goto release;
+		}
+
 		if ((namelen == ea->namelen) &&
 		    memcmp(name, ea->name, namelen) == 0) {
 			/* Found it */

@@ -834,6 +841,7 @@ ssize_t __jfs_getxattr(struct inode *ino
 			memcpy(data, value, size);
 			goto release;
 		}
+	}
       not_found:
 	size = -ENODATA;
       release:

@@ -861,7 +869,7 @@ ssize_t jfs_listxattr(struct dentry * de
 	ssize_t size = 0;
 	int xattr_size;
 	struct jfs_ea_list *ealist;
-	struct jfs_ea *ea;
+	struct jfs_ea *ea, *ealist_end;
 	struct ea_buffer ea_buf;
 
 	down_read(&JFS_IP(inode)->xattr_sem);

@@ -876,9 +884,16 @@ ssize_t jfs_listxattr(struct dentry * de
 		goto release;
 
 	ealist = (struct jfs_ea_list *) ea_buf.xattr;
+	ealist_end = END_EALIST(ealist);
 
 	/* compute required size of list */
-	for (ea = FIRST_EA(ealist); ea < END_EALIST(ealist); ea = NEXT_EA(ea)) {
+	for (ea = FIRST_EA(ealist); ea < ealist_end; ea = NEXT_EA(ea)) {
+		if (unlikely(ea + 1 > ealist_end) ||
+		    unlikely(NEXT_EA(ea) > ealist_end)) {
+			size = -EUCLEAN;
+			goto release;
+		}
+
 		if (can_list(ea))
 			size += name_size(ea) + 1;
 	}

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Edson Juliano Drosdeck <[email protected]>

commit 8fc1e8b230771442133d5cf5fa4313277aa2bb8b upstream.

Positivo SU C1400 is equipped with ALC256, and it needs ALC269_FIXUP_ASPIRE_HEADSET_MIC quirk to make its headset mic work.

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

@@ -8335,6 +8335,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x10cf, 0x1845, "Lifebook U904", ALC269_FIXUP_LIFEBOOK_EXTMIC),
 	SND_PCI_QUIRK(0x10ec, 0x10f2, "Intel Reference board", ALC700_FIXUP_INTEL_REFERENCE),
 	SND_PCI_QUIRK(0x10ec, 0x118c, "Medion EE4254 MD62100", ALC256_FIXUP_MEDION_HEADSET_NO_PRESENCE),
+	SND_PCI_QUIRK(0x10ec, 0x119e, "Positivo SU C1400", ALC269_FIXUP_ASPIRE_HEADSET_MIC),
 	SND_PCI_QUIRK(0x10ec, 0x11bc, "VAIO VJFE-IL", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
 	SND_PCI_QUIRK(0x10ec, 0x1230, "Intel Reference board", ALC295_FIXUP_CHROME_BOOK),
 	SND_PCI_QUIRK(0x10ec, 0x124c, "Intel Reference board", ALC295_FIXUP_CHROME_BOOK),

5.4-stable review patch. If anyone has any objections, please let me know.

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

From: Jann Horn <[email protected]>

commit f8138f2ad2f745b9a1c696a05b749eabe44337ea upstream.

When I wrote commit 3cad1bc01041 ("filelock: Remove locks reliably when fcntl/close race is detected"), I missed that there are two copies of the code I was patching: The normal version, and the version for 64-bit offsets on 32-bit kernels.
Thanks to Greg KH for stumbling over this while doing the stable backport...

Apply exactly the same fix to the compat path for 32-bit kernels.

---
 fs/locks.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

@@ -2656,8 +2656,9 @@ int fcntl_setlk64(unsigned int fd, struc
 	error = do_lock_file_wait(filp, cmd, file_lock);
 
 	/*
-	 * Attempt to detect a close/fcntl race and recover by releasing the
-	 * lock that was just acquired. There is no need to do that when we're
+	 * Detect close/fcntl races and recover by zapping all POSIX locks
+	 * associated with this file and our files_struct, just like on
+	 * filp_flush(). There is no need to do that when we're
 	 * unlocking though, or for OFD locks.
 	 */
 	if (!error && file_lock->fl_type != F_UNLCK &&

@@ -2671,9 +2672,7 @@ int fcntl_setlk64(unsigned int fd, struc
 		f = fcheck(fd);
 		spin_unlock(&current->files->file_lock);
 		if (f != filp) {
-			file_lock->fl_type = F_UNLCK;
-			error = do_lock_file_wait(filp, cmd, file_lock);
-			WARN_ON_ONCE(error);
+			locks_remove_posix(filp, &current->files);
 			error = -EBADF;
 		}
 	}

The following build errors noticed while building arm and arm64 configs with toolchains gcc-12 and clang-18 on stable-rc linux-5.4.y

First seen on today builds 25-July-2024.

GOOD: 4fb5a81f1046 ("Linux 5.4.280-rc2")
BAD: 13f3efb40ee1 ("Linux 5.4.281-rc1")

Build errors:
-------
drivers/gpio/gpio-pca953x.c: In function 'pca953x_irq_bus_sync_unlock':
drivers/gpio/gpio-pca953x.c:699:17: error: implicit declaration of function 'guard' [-Werror=implicit-function-declaration]

  699 |                 guard(mutex)(&chip->i2c_lock);
      |                 ^~~~~

drivers/gpio/gpio-pca953x.c:699:23: error: 'mutex' undeclared (first use in this function)
699 | guard(mutex)(&chip->i2c_lock);
| ^~~~~

metadata:
------
config: https://storage.tuxsuite.com/public/linaro/lkft/builds/2jkAGMFVlBW89jcWOIsv80LLLSa/config
download_url:
https://storage.tuxsuite.com/public/linaro/lkft/builds/2jkAGMFVlBW89jcWOIsv80LLLSa/
git_describe: v5.4.280-44-g13f3efb40ee1
git_repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git_sha: 13f3efb40ee1218ae1933c1a9f876c2a86c48664
git_short_log: 13f3efb40ee1 ("Linux 5.4.281-rc1")

--
Linaro LKFT
https://lkft.linaro.org

Now fixed for 4.19 and 5.4 trees, thanks!

greg k-h

Hello,

This rc kernel passed ChromeOS CQ tests:
https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/5741618/1?tab=checks

Thanks,

Hi Greg,

No problems seen on x86_64 and aarch64 with our testing.

Thanks,
Harshit

Compiled and booted on my test system. No dmesg regressions.

thanks,
-- Shuah