ksmbd is doing write access using vfs helpers. There are the cases that
mnt_want_write() is not called in vfs helper. This patch add missing
mnt_want_write() to ksmbd vfs functions.

Cc: stable@vger.kernel.org
Cc: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

->StructureSize2 indicates command payload size. ksmbd should validate
this size with rfc1002 length before accessing it.
This patch remove unneeded check and add the validation for this.

[    8.912583] BUG: KASAN: slab-out-of-bounds in ksmbd_smb2_check_message+0x12a/0xc50
[    8.913051] Read of size 2 at addr ffff88800ac7d92c by task kworker/0:0/7
...
[    8.914967] Call Trace:
[    8.915126]  <TASK>
[    8.915267]  dump_stack_lvl+0x33/0x50
[    8.915506]  print_report+0xcc/0x620
[    8.916558]  kasan_report+0xae/0xe0
[    8.917080]  kasan_check_range+0x35/0x1b0
[    8.917334]  ksmbd_smb2_check_message+0x12a/0xc50
[    8.917935]  ksmbd_verify_smb_message+0xae/0xd0
[    8.918223]  handle_ksmbd_work+0x192/0x820
[    8.918478]  process_one_work+0x419/0x760
[    8.918727]  worker_thread+0x2a2/0x6f0
[    8.919222]  kthread+0x187/0x1d0
[    8.919723]  ret_from_fork+0x1f/0x30
[    8.919954]  </TASK>

Cc: stable@vger.kernel.org
Reported-by: Chih-Yen Chang <cc85nod@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

Pull x86 fix from Borislav Petkov:

 - Set up the kernel CS earlier in the boot process in case EFI boots
   the kernel after bypassing the decompressor and the CS descriptor
   used ends up being the EFI one which is not mapped in the identity
   page table, leading to early SEV/SNP guest communication exceptions
   resulting in the guest crashing

* tag 'x86_urgent_for_v6.4_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/head/64: Switch to KERNEL_CS as soon as new GDT is installed

Pull smb server fixes from Steve French:
 "Five smb3 server fixes, all also for stable:

   - Fix four slab out of bounds warnings: improve checks for protocol
     id, and for small packet length, and for create context parsing,
     and for negotiate context parsing

   - Fix for incorrect dereferencing POSIX ACLs"

* tag '6.4-rc5-smb3-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: validate smb request protocol id
  ksmbd: check the validation of pdu_size in ksmbd_conn_handler_loop
  ksmbd: fix posix_acls and acls dereferencing possible ERR_PTR()
  ksmbd: fix out-of-bound read in parse_lease_state()
  ksmbd: fix out-of-bound read in deassemble_neg_contexts()

Pull i2c fixes from Wolfram Sang:
 "Biggest news is that Andi Shyti steps in for maintaining the
  controller drivers. Thank you very much!

  Other than that, one new driver maintainer and the rest is usual
  driver bugfixes. at24 has a Kconfig dependecy fix"

* tag 'i2c-for-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  MAINTAINERS: Add entries for Renesas RZ/V2M I2C driver
  eeprom: at24: also select REGMAP
  i2c: sprd: Delete i2c adapter in .remove's error path
  i2c: mv64xxx: Fix reading invalid status value in atomic mode
  i2c: designware: fix idx_write_cnt in read loop
  i2c: mchp-pci1xxxx: Avoid cast to incompatible function type
  i2c: img-scb: Fix spelling mistake "innacurate" -> "inaccurate"
  MAINTAINERS: Add myself as I2C host drivers maintainer

Pull soundwire fixes from Vinod Koul:
 "Core fix for missing flag clear, error patch handling in qcom driver
  and BIOS quirk for HP Spectre x360:

   - HP Spectre x360 soundwire DMI quirk

   - Error path handling for qcom driver

   - Core fix for missing clear of alloc_slave_rt"

* tag 'soundwire-6.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
  soundwire: stream: Add missing clear of alloc_slave_rt
  soundwire: qcom: add proper error paths in qcom_swrm_startup()
  soundwire: dmi-quirks: add new mapping for HP Spectre x360

Pull ARM SoC fixes from Arnd Bergmann:
 "Most of the changes this time are for the Qualcomm Snapdragon
  platforms.

  There are bug fixes for error handling in Qualcomm icc-bwmon,
  rpmh-rsc, ramp_controller and rmtfs driver as well as the AMD tee
  firmware driver and a missing initialization in the Arm ff-a firmware
  driver. The Qualcomm RPMh and EDAC drivers need some rework to work
  correctly on all supported chips.

  The DT fixes include:

   - i.MX8 fixes for gpio, pinmux and clock settings

   - ADS touchscreen gpio polarity settings in several machines

   - Address dtb warnings for caches, panel and input-enable properties
     on Qualcomm platforms

   - Incorrect data on qualcomm platforms fir SA8155P power domains,
     SM8550 LLCC, SC7180-lite SDRAM frequencies and SM8550 soundwire

   - Remoteproc firmware paths are corrected for Sony Xperia 10 IV"

* tag 'arm-fixes-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (36 commits)
  firmware: arm_ffa: Set handle field to zero in memory descriptor
  ARM: dts: Fix erroneous ADS touchscreen polarities
  arm64: dts: imx8mn-beacon: Fix SPI CS pinmux
  arm64: dts: imx8-ss-dma: assign default clock rate for lpuarts
  arm64: dts: imx8qm-mek: correct GPIOs for USDHC2 CD and WP signals
  EDAC/qcom: Get rid of hardcoded register offsets
  EDAC/qcom: Remove superfluous return variable assignment in qcom_llcc_core_setup()
  arm64: dts: qcom: sm8550: Use the correct LLCC register scheme
  dt-bindings: cache: qcom,llcc: Fix SM8550 description
  arm64: dts: qcom: sc7180-lite: Fix SDRAM freq for misidentified sc7180-lite boards
  arm64: dts: qcom: sm8550: use uint16 for Soundwire interval
  soc: qcom: rpmhpd: Add SA8155P power domains
  arm64: dts: qcom: Split out SA8155P and use correct RPMh power domains
  dt-bindings: power: qcom,rpmpd: Add SA8155P
  soc: qcom: Rename ice to qcom_ice to avoid module name conflict
  soc: qcom: rmtfs: Fix error code in probe()
  soc: qcom: ramp_controller: Fix an error handling path in qcom_ramp_controller_probe()
  ARM: dts: at91: sama7g5ek: fix debounce delay property for shdwc
  ARM: at91: pm: fix imbalanced reference counter for ethernet devices
  arm64: dts: qcom: sm6375-pdx225: Fix remoteproc firmware paths
  ...

Pull block fixes from Jens Axboe:

 - Fix an issue with the hardware queue nr_active, causing it to become
   imbalanced (Tian)

 - Fix an issue with null_blk not releasing pages if configured as
   memory backed (Nitesh)

 - Fix a locking issue in dasd (Jan)

* tag 'block-6.4-2023-06-09' of git://git.kernel.dk/linux:
  s390/dasd: Use correct lock while counting channel queue length
  null_blk: Fix: memory release when memory_backed=1
  blk-mq: fix blk_mq_hw_ctx active request accounting

Pull virtio bug fixes from Michael Tsirkin:
 "A bunch of fixes all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  tools/virtio: use canonical ftrace path
  vhost_vdpa: support PACKED when setting-getting vring_base
  vhost: support PACKED when setting-getting vring_base
  vhost: Fix worker hangs due to missed wake up calls
  vhost: Fix crash during early vhost_transport_send_pkt calls
  vhost_net: revert upend_idx only on retriable error
  vhost_vdpa: tell vqs about the negotiated
  vdpa/mlx5: Fix hang when cvq commands are triggered during device unregister
  tools/virtio: Add .gitignore for ringtest
  tools/virtio: Fix arm64 ringtest compilation error
  vduse: avoid empty string for dev name
  vhost: use kzalloc() instead of kmalloc() followed by memset()

Pull ceph fixes from Ilya Dryomov:
 "A fix for a potential data corruption in differential backup and
  snapshot-based mirroring scenarios in RBD and a reference counting
  fixup to avoid use-after-free in CephFS, all marked for stable"

* tag 'ceph-for-6.4-rc6' of https://github.com/ceph/ceph-client:
  ceph: fix use-after-free bug for inodes when flushing capsnaps
  rbd: get snapshot context after exclusive lock is ensured to be held
  rbd: move RBD_OBJ_FLAG_COPYUP_ENABLED flag setting

The lock around counting the channel queue length in the BIODASDINFO
ioctl was incorrectly changed to the dasd_block->queue_lock with commit
583d6535 ("dasd: remove dead code"). This can lead to endless list
iterations and a subsequent crash.

The queue_lock is supposed to be used only for queue lists belonging to
dasd_block. For dasd_device related queue lists the ccwdev lock must be
used.

Fix the mentioned issues by correctly using the ccwdev lock instead of
the queue lock.

Fixes: 583d6535

 ("dasd: remove dead code")
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20230609153750.1258763-2-sth@linux.ibm.com


Signed-off-by: Jens Axboe <axboe@kernel.dk>

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix to avoid ISA-disallowed privilege mappings that can result from
   WRITE+EXEC mmap requests from userspace.

 - A fix for kfence to handle the huge pages.

 - A fix to avoid converting misaligned VAs to huge pages.

 - ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE has been selected so kprobe
   can understand user pointers.

* tag 'riscv-for-linus-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: fix kprobe __user string arg print fault issue
  riscv: Check the virtual alignment before choosing a map size
  riscv: Fix kfence now that the linear mapping can be backed by PUD/P4D/PGD
  riscv: mm: Ensure prot of VM_WRITE and VM_EXEC must be readable

Pull s390 fixes from Alexander Gordeev:

 - Avoid linker error for randomly generated config file that has
   CONFIG_BRANCH_PROFILE_NONE enabled and make it similar to riscv, x86
   and also to commit 4bf3ec38 ("s390: disable branch profiling for
   vdso").

 - Currently, if the device is offline and all the channel paths are
   either configured or varied offline, the associated subchannel gets
   unregistered. Don't unregister the subchannel, instead unregister
   offline device.

* tag 's390-6.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/purgatory: disable branch profiling
  s390/cio: unregister device when the only path is gone

Pull gpio fixes from Bartosz Golaszewski:
 "Two fixes for the GPIO testing module and one commit making Andy a
  reviewer for the GPIO subsystem:

   - fix a memory corruption bug in gpio-sim

   - fix inconsistencies in user-space configuration of gpio-sim

   - make Andy Shevchenko a reviewer for the GPIO subsystem"

* tag 'gpio-fixes-for-v6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  MAINTAINERS: add Andy Shevchenko as reviewer for the GPIO subsystem
  gpio: sim: quietly ignore configured lines outside the bank
  gpio: sim: fix memory corruption when adding named lines and unnamed hogs

The canonical location for the tracefs filesystem is at /sys/kernel/tracing.

But, from Documentation/trace/ftrace.rst:

  Before 4.1, all ftrace tracing control files were within the debugfs
  file system, which is typically located at /sys/kernel/debug/tracing.
  For backward compatibility, when mounting the debugfs file system,
  the tracefs file system will be automatically mounted at:

  /sys/kernel/debug/tracing

A few spots in tools/virtio still refer to this older debugfs
path, so let's update them to avoid confusion.

Signed-off-by: Ross Zwisler <zwisler@google.com>
Message-Id: <20230215223350.2658616-6-zwisler@google.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com>

Use the right structs for PACKED or split vqs when setting and
getting the vring base.

Fixes: 4c8cf318

 ("vhost: introduce vDPA-based backend")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230424225031.18947-4-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>

Use the right structs for PACKED or split vqs when setting and
getting the vring base.

Fixes: 4c8cf318

 ("vhost: introduce vDPA-based backend")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230424225031.18947-3-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>

Pull pin control fix from Linus Walleij:
 "A single fix for the Meson driver, nothing else has surfaced so far
  this cycle"

* tag 'pinctrl-v6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: meson-axg: add missing GPIOA_18 gpio group

Pull sound fixes from Takashi Iwai:
 "Lots of small fixes, and almost all are device-specific.

  A few of them are the fixes for the old regressions by the fast kctl
  lookups (introduced around 5.19). Others are ASoC simple-card fixes,
  selftest compile warning fixes, ASoC AMD quirks, various ASoC codec
  fixes as well as usual HD-audio quirks"

* tag 'sound-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (26 commits)
  ALSA: hda/realtek: Enable 4 amplifiers instead of 2 on a HP platform
  ALSA: hda: Fix kctl->id initialization
  ALSA: gus: Fix kctl->id initialization
  ALSA: cmipci: Fix kctl->id initialization
  ALSA: ymfpci: Fix kctl->id initialization
  ALSA: ice1712,ice1724: fix the kcontrol->id initialization
  ALSA: hda/realtek: Add quirk for Clevo NS50AU
  ALSA: hda/realtek: Add quirks for Asus ROG 2024 laptops using CS35L41
  ALSA: hda/realtek: Add "Intel Reference board" and "NUC 13" SSID in the ALC256
  ALSA: hda/realtek: Add Lenovo P3 Tower platform
  ALSA: hda/realtek: Add a quirk for HP Slim Desktop S01
  selftests: alsa: pcm-test: Fix compiler warnings about the format
  ASoC: fsl_sai: Enable BCI bit if SAI works on synchronous mode with BYP asserted
  ASoC: simple-card-utils: fix PCM constraint error check
  ASoC: cs35l56: Remove NULL check from cs35l56_sdw_dai_set_stream()
  ASoC: max98363: limit the number of channel to 1
  ASoC: max98363: Removed 32bit support
  ASoC: mediatek: mt8195: fix use-after-free in driver remove path
  ASoC: mediatek: mt8188: fix use-after-free in driver remove path
  ASoC: amd: yc: Add Thinkpad Neo14 to quirks list for acp6x
  ...

Pull ext4 fix from Ted Ts'o:
 "Fix an ext4 regression which breaks remounting r/w file systems that
  have the quota feature enabled"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: only check dquot_initialize_needed() when debugging
  Revert "ext4: don't clear SB_RDONLY when remounting r/w until quota is re-enabled"

Merge tag 'at24-fixes-for-v6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-current

at24 fixes for v6.4-rc6

- fix a Kconfig issue (we need to select REGMAP, not only REGMAP_I2C)

Merge tag 'imx-fixes-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixes

i.MX fixes for 6.4, round 2:

- Fix SPI CS pinmux for the final production version of imx8mn-beacon
  board.
- Fix GPIOs for USDHC2 CD and WP signals on imx8qm-mek board.
- Assign default clock rate for i.MX8 LPUARTs to fix UART failure.

* tag 'imx-fixes-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  arm64: dts: imx8mn-beacon: Fix SPI CS pinmux
  arm64: dts: imx8-ss-dma: assign default clock rate for lpuarts
  arm64: dts: imx8qm-mek: correct GPIOs for USDHC2 CD and WP signals

Link: https://lore.kernel.org/r/20230607141312.GU4199@dragon


Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Pull drm fixes from Dave Airlie:
 "Bit busier and a bit more scattered than usual. amdgpu is the main
  one, with ivpu and msm having a few fixes, then i915, exynos, ast,
  lima, radeon with some misc bits, but overall nothing standing out.

  fb-helper:
   - Fill in fb-helper vars more correctly

  amdgpu:
   - S0ix fixes
   - GPU reset fixes
   - SMU13 fixes
   - SMU11 fixes
   - Misc Display fixes
   - Revert RV/RV2/PCO clock counter changes
   - Fix Stoney xclk value
   - Fix reserved vram debug info

  radeon:
   - Fix a potential use after free

  i915:
   - CDCLK voltage fix for ADL-P
   - eDP wake sync pulse fix
   - Two error handling fixes to selftests

  exynos:
   - Fix wrong return in Exynos vidi driver
   - Fix use-after-free issue to Exynos g2d driver

  ast:
   - resume and modeset fixes for ast

  ivpu:
   - Assorted ivpu fixes

  lima:
   - lima context destroy fix

  msm:
   - Fix max segment size to address splat on newer a6xx
   - Disable PSR by default w/ modparam to re-enable, since there still
     seems to be a lingering issue
   - Fix HPD issue
   - Fix issue with unitialized GMU mutex"

* tag 'drm-fixes-2023-06-09' of git://anongit.freedesktop.org/drm/drm: (32 commits)
  drm/msm/a6xx: initialize GMU mutex earlier
  drm/msm/dp: enable HDP plugin/unplugged interrupts at hpd_enable/disable
  accel/ivpu: Fix sporadic VPU boot failure
  accel/ivpu: Do not use mutex_lock_interruptible
  accel/ivpu: Do not trigger extra VPU reset if the VPU is idle
  drm/amd/display: Reduce sdp bw after urgent to 90%
  drm/amdgpu: change reserved vram info print
  drm/amdgpu: fix xclk freq on CHIP_STONEY
  drm/radeon: fix race condition UAF in radeon_gem_set_domain_ioctl
  Revert "drm/amdgpu: switch to golden tsc registers for raven/raven2"
  Revert "drm/amdgpu: Differentiate between Raven2 and Raven/Picasso according to revision id"
  Revert "drm/amdgpu: change the reference clock for raven/raven2"
  drm/amd/display: add ODM case when looking for first split pipe
  drm/amd: Make lack of `ACPI_FADT_LOW_POWER_S0` or `CONFIG_AMD_PMC` louder during suspend path
  drm/amd/pm: conditionally disable pcie lane switching for some sienna_cichlid SKUs
  drm/amd/pm: Fix power context allocation in SMU13
  drm/amdgpu: fix Null pointer dereference error in amdgpu_device_recover_vram
  drm/amd: Disallow s0ix without BIOS support again
  drm/i915/selftests: Add some missing error propagation
  drm/exynos: fix race condition UAF in exynos_g2d_exec_ioctl
  ...

Pull cgroup fixes from Tejun Heo:

 - Fix css_set reference leaks on fork failures

 - Fix CPU hotplug locking in cgroup_transfer_tasks() which is used by
   cgroup1 cpuset

 - Doc update

* tag 'cgroup-for-6.4-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: Documentation: Clarify usage of memory limits
  cgroup: always put cset in cgroup_css_set_put_fork
  cgroup: fix missing cpus_read_{lock,unlock}() in cgroup_transfer_tasks()

A few more late fixes for v6.4-rc6

+ Fix max segment size to address splat on newer a6xx
+ Disable PSR by default w/ modparam to re-enable, since there
  still seems to be a lingering issue
+ Fix HPD issue
+ Fix issue with unitialized GMU mutex

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGufjVZRNT6YfQ7YUXFC7Cz95wdLF7QHAYkiGfp+3Xc3DQ@mail.gmail.com

Move GMU mutex initialization earlier to make sure that it is always
initialized. a6xx_destroy can be called from ther failure path before
GMU initialization.

This fixes the following backtrace:

------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 0 PID: 58 at kernel/locking/mutex.c:582 __mutex_lock+0x1ec/0x3d0
Modules linked in:
CPU: 0 PID: 58 Comm: kworker/u16:1 Not tainted 6.3.0-rc5-00155-g187c06436519 #565
Hardware name: Qualcomm Technologies, Inc. SM8350 HDK (DT)
Workqueue: events_unbound deferred_probe_work_func
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __mutex_lock+0x1ec/0x3d0
lr : __mutex_lock+0x1ec/0x3d0
sp : ffff800008993620
x29: ffff800008993620 x28: 0000000000000002 x27: ffff47b253c52800
x26: 0000000001000606 x25: ffff47b240bb2810 x24: fffffffffffffff4
x23: 0000000000000000 x22: ffffc38bba15ac14 x21: 0000000000000002
x20: ffff800008993690 x19: ffff47b2430cc668 x18: fffffffffffe98f0
x17: 6f74616c75676572 x16: 20796d6d75642067 x15: 0000000000000038
x14: 0000000000000000 x13: ffffc38bbba050b8 x12: 0000000000000666
x11: 0000000000000222 x10: ffffc38bbba603e8 x9 : ffffc38bbba050b8
x8 : 00000000ffffefff x7 : ffffc38bbba5d0b8 x6 : 0000000000000222
x5 : 000000000000bff4 x4 : 40000000fffff222 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff47b240cb1880
Call trace:
 __mutex_lock+0x1ec/0x3d0
 mutex_lock_nested+0x2c/0x38
 a6xx_destroy+0xa0/0x138
 a6xx_gpu_init+0x41c/0x618
 adreno_bind+0x188/0x290
 component_bind_all+0x118/0x248
 msm_drm_bind+0x1c0/0x670
 try_to_bring_up_aggregate_device+0x164/0x1d0
 __component_add+0xa8/0x16c
 component_add+0x14/0x20
 dsi_dev_attach+0x20/0x2c
 dsi_host_attach+0x9c/0x144
 devm_mipi_dsi_attach+0x34/0xac
 lt9611uxc_attach_dsi.isra.0+0x84/0xfc
 lt9611uxc_probe+0x5b8/0x67c
 i2c_device_probe+0x1ac/0x358
 really_probe+0x148/0x2ac
 __driver_probe_device+0x78/0xe0
 driver_probe_device+0x3c/0x160
 __device_attach_driver+0xb8/0x138
 bus_for_each_drv+0x84/0xe0
 __device_attach+0x9c/0x188
 device_initial_probe+0x14/0x20
 bus_probe_device+0xac/0xb0
 deferred_probe_work_func+0x8c/0xc8
 process_one_work+0x2bc/0x594
 worker_thread+0x228/0x438
 kthread+0x108/0x10c
 ret_from_fork+0x10/0x20
irq event stamp: 299345
hardirqs last  enabled at (299345): [<ffffc38bb9ba61e4>] put_cpu_partial+0x1c8/0x22c
hardirqs last disabled at (299344): [<ffffc38bb9ba61dc>] put_cpu_partial+0x1c0/0x22c
softirqs last  enabled at (296752): [<ffffc38bb9890434>] _stext+0x434/0x4e8
softirqs last disabled at (296741): [<ffffc38bb989669c>] ____do_softirq+0x10/0x1c
---[ end trace 0000000000000000 ]---

Fixes: 4cd15a3e

 ("drm/msm/a6xx: Make GPU destroy a bit safer")
Cc: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/531540/


Signed-off-by: Rob Clark <robdclark@chromium.org>

The internal_hpd flag is set to true by dp_bridge_hpd_enable() and set to
false by dp_bridge_hpd_disable() to handle GPIO pinmuxed into DP controller
case. HDP related interrupts can not be enabled until internal_hpd is set
to true. At current implementation dp_display_config_hpd() will initialize
DP host controller first followed by enabling HDP related interrupts if
internal_hpd was true at that time. Enable HDP related interrupts depends on
internal_hpd status may leave system with DP driver host is in running state
but without HDP related interrupts being enabled. This will prevent external
display from being detected. Eliminated this dependency by moving HDP related
interrupts enable/disable be done at dp_bridge_hpd_enable/disable() directly
regardless of internal_hpd status.

Changes in V3:
-- dp_catalog_ctrl_hpd_enable() and dp_catalog_ctrl_hpd_disable()
-- rewording ocmmit text

Changes in V4:
-- replace dp_display_config_hpd() with dp_display_host_start()
-- move enable_irq() at dp_display_host_start();

Changes in V5:
-- replace dp_display_host_start() with dp_display_host_init()

Changes in V6:
-- squash remove enable_irq() and disable_irq()

Fixes: cd198cad

 ("drm/msm/dp: Rely on hpd_enable/disable callbacks")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Tested-by: Leonard Lausen <leonard@lausen.nl> # on sc7180 lazor
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Tested-by: Bjorn Andersson <andersson@kernel.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Link: https://lore.kernel.org/r/1684878756-17830-1-git-send-email-quic_khsieh@quicinc.com


Signed-off-by: Rob Clark <robdclark@chromium.org>

drm-misc-fixes for v6.4-rc6:
- resume and modeset fixes for ast.
- Fill in fb-helper vars more correctly.
- Assorted ivpu fixes.
- lima context destroy fix.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ea6b88ec-b653-3781-0b68-cd0275c27923@linux.intel.com

Merge tag 'exynos-drm-fixes-for-v6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos

 into drm-fixes

Two fixups
- Fix wrong return in Exynos vidi driver.
- Fix use-after-free issue to Exynos g2d driver.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230607043148.43303-1-inki.dae@samsung.com

Merge tag 'drm-intel-fixes-2023-06-08' of git://anongit.freedesktop.org/drm/drm-intel

 into drm-fixes

CDCLK voltage fix for ADL-P and eDP wake sync pulse fix.
Two error handling fixes to selftests (to appease static checkers)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZIGUHBz7+LsqN2nm@jlahtine-mobl.ger.corp.intel.com

Merge tag 'amd-drm-fixes-6.4-2023-06-07' of https://gitlab.freedesktop.org/agd5f/linux

 into drm-fixes

amd-drm-fixes-6.4-2023-06-07:

amdgpu:
- S0ix fixes
- GPU reset fixes
- SMU13 fixes
- SMU11 fixes
- Misc Display fixes
- Revert RV/RV2/PCO clock counter changes
- Fix Stoney xclk value
- Fix reserved vram debug info

radeon:
- Fix a potential use after free

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230607213740.7723-1-alexander.deucher@amd.com

Pull arm64 fixes from Will Deacon:
 "Two tiny arm64 fixes for -rc6.

  One fixes a build breakage when MAX_ORDER can be nonsensical if
  CONFIG_EXPERT=y and the other fixes the address masking for perf's
  page fault software events so that it is consistent amongst them:

   - Fix build breakage due to bogus MAX_ORDER definitions on !4k pages

   - Avoid masking fault address for perf software events"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: pass original fault address to handle_mm_fault() in PER_VMA_LOCK block
  arm64: Remove the ARCH_FORCE_MAX_ORDER config input prompt

We can race where we have added work to the work_list, but
vhost_task_fn has passed that check but not yet set us into
TASK_INTERRUPTIBLE. wake_up_process will see us in TASK_RUNNING and
just return.

This bug was intoduced in commit f9010dbd ("fork, vhost: Use
CLONE_THREAD to fix freezer/ps regression") when I moved the setting
of TASK_INTERRUPTIBLE to simplfy the code and avoid get_signal from
logging warnings about being in the wrong state. This moves the setting
of TASK_INTERRUPTIBLE back to before we test if we need to stop the
task to avoid a possible race there as well. We then have vhost_worker
set TASK_RUNNING if it finds work similar to before.

Fixes: f9010dbd

 ("fork, vhost: Use CLONE_THREAD to fix freezer/ps regression")
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230607192338.6041-3-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

If userspace does VHOST_VSOCK_SET_GUEST_CID before VHOST_SET_OWNER we
can race where:
1. thread0 calls vhost_transport_send_pkt -> vhost_work_queue
2. thread1 does VHOST_SET_OWNER which calls vhost_worker_create.
3. vhost_worker_create will set the dev->worker pointer before setting
the worker->vtsk pointer.
4. thread0's vhost_work_queue will see the dev->worker pointer is
set and try to call vhost_task_wake using not yet set worker->vtsk
pointer.
5. We then crash since vtsk is NULL.

Before commit 6e890c5d ("vhost: use vhost_tasks for worker
threads"), we only had the worker pointer so we could just check it to
see if VHOST_SET_OWNER has been done. After that commit we have the
vhost_worker and vhost_task pointer, so we can now hit the bug above.

This patch embeds the vhost_worker in the vhost_dev and moves the work
list initialization back to vhost_dev_init, so we can just check the
worker.vtsk pointer to check if VHOST_SET_OWNER has been done like
before.

Fixes: 6e890c5d

 ("vhost: use vhost_tasks for worker threads")
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230607192338.6041-2-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reported-by:  <syzbot+d0d442c22fa8db45ff0e@syzkaller.appspotmail.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>

Fix possible virtqueue used buffers leak and corresponding stuck
in case of temporary -EIO from sendmsg() which is produced by
tun driver while backend device is not up.

In case of no-retriable error and zcopy do not revert upend_idx
to pass packet data (that is update used_idx in corresponding
vhost_zerocopy_signal_used()) as if packet data has been
transferred successfully.

v2: set vq->heads[ubuf->desc].len equal to VHOST_DMA_DONE_LEN
in case of fake successful transmit.

Signed-off-by: Andrey Smetanin <asmetanin@yandex-team.ru>
Message-Id: <20230424204411.24888-1-asmetanin@yandex-team.ru>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Andrey Smetanin <asmetanin@yandex-team.ru>
Acked-by: Jason Wang <jasowang@redhat.com>

As is done in the net, iscsi, and vsock vhost support, let the vdpa vqs
know about the features that have been negotiated.  This allows vhost
to more safely make decisions based on the features, such as when using
PACKED vs split queues.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230424225031.18947-2-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Currently the vdpa device is unregistered after the workqueue that
processes vq commands is disabled. However, the device unregister
process can still send commands to the cvq (a vlan delete for example)
which leads to a hang because the handing workqueue has been disabled
and the command never finishes:

 [ 2263.095764] rcu: INFO: rcu_sched self-detected stall on CPU
 [ 2263.096307] rcu:        9-....: (5250 ticks this GP) idle=dac4/1/0x4000000000000000 softirq=111009/111009 fqs=2544
 [ 2263.097154] rcu:        (t=5251 jiffies g=393549 q=347 ncpus=10)
 [ 2263.097648] CPU: 9 PID: 94300 Comm: kworker/u20:2 Not tainted 6.3.0-rc6_for_upstream_min_debug_2023_04_14_00_02 #1
 [ 2263.098535] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
 [ 2263.099481] Workqueue: mlx5_events mlx5_vhca_state_work_handler [mlx5_core]
 [ 2263.100143] RIP: 0010:virtnet_send_command+0x109/0x170
 [ 2263.100621] Code: 1d df f5 ff 85 c0 78 5c 48 8b 7b 08 e8 d0 c5 f5 ff 84 c0 75 11 eb 22 48 8b 7b 08 e8 01 b7 f5 ff 84 c0 75 15 f3 90 48 8b 7b 08 <48> 8d 74 24 04 e8 8d c5 f5 ff 48 85 c0 74 de 48 8b 83 f8 00 00 00
 [ 2263.102148] RSP: 0018:ffff888139cf36e8 EFLAGS: 00000246
 [ 2263.102624] RAX: 0000000000000000 RBX: ffff888166bea940 RCX: 0000000000000001
 [ 2263.103244] RDX: 0000000000000000 RSI: ffff888139cf36ec RDI: ffff888146763800
 [ 2263.103864] RBP: ffff888139cf3710 R08: ffff88810d201000 R09: 0000000000000000
 [ 2263.104473] R10: 0000000000000002 R11: 0000000000000003 R12: 0000000000000002
 [ 2263.105082] R13: 0000000000000002 R14: ffff888114528400 R15: ffff888166bea000
 [ 2263.105689] FS:  0000000000000000(0000) GS:ffff88852cc80000(0000) knlGS:0000000000000000
 [ 2263.106404] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 [ 2263.106925] CR2: 00007f31f394b000 CR3: 000000010615b006 CR4: 0000000000370ea0
 [ 2263.107542] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 [ 2263.108163] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 [ 2263.108769] Call Trace:
 [ 2263.109059]  <TASK>
 [ 2263.109320]  ? check_preempt_wakeup+0x11f/0x230
 [ 2263.109750]  virtnet_vlan_rx_kill_vid+0x5a/0xa0
 [ 2263.110180]  vlan_vid_del+0x9c/0x170
 [ 2263.110546]  vlan_device_event+0x351/0x760 [8021q]
 [ 2263.111004]  raw_notifier_call_chain+0x41/0x60
 [ 2263.111426]  dev_close_many+0xcb/0x120
 [ 2263.111808]  unregister_netdevice_many_notify+0x130/0x770
 [ 2263.112297]  ? wq_worker_running+0xa/0x30
 [ 2263.112688]  unregister_netdevice_queue+0x89/0xc0
 [ 2263.113128]  unregister_netdev+0x18/0x20
 [ 2263.113512]  virtnet_remove+0x4f/0x230
 [ 2263.113885]  virtio_dev_remove+0x31/0x70
 [ 2263.114273]  device_release_driver_internal+0x18f/0x1f0
 [ 2263.114746]  bus_remove_device+0xc6/0x130
 [ 2263.115146]  device_del+0x173/0x3c0
 [ 2263.115502]  ? kernfs_find_ns+0x35/0xd0
 [ 2263.115895]  device_unregister+0x1a/0x60
 [ 2263.116279]  unregister_virtio_device+0x11/0x20
 [ 2263.116706]  device_release_driver_internal+0x18f/0x1f0
 [ 2263.117182]  bus_remove_device+0xc6/0x130
 [ 2263.117576]  device_del+0x173/0x3c0
 [ 2263.117929]  ? vdpa_dev_remove+0x20/0x20 [vdpa]
 [ 2263.118364]  device_unregister+0x1a/0x60
 [ 2263.118752]  mlx5_vdpa_dev_del+0x4c/0x80 [mlx5_vdpa]
 [ 2263.119232]  vdpa_match_remove+0x21/0x30 [vdpa]
 [ 2263.119663]  bus_for_each_dev+0x71/0xc0
 [ 2263.120054]  vdpa_mgmtdev_unregister+0x57/0x70 [vdpa]
 [ 2263.120520]  mlx5v_remove+0x12/0x20 [mlx5_vdpa]
 [ 2263.120953]  auxiliary_bus_remove+0x18/0x30
 [ 2263.121356]  device_release_driver_internal+0x18f/0x1f0
 [ 2263.121830]  bus_remove_device+0xc6/0x130
 [ 2263.122223]  device_del+0x173/0x3c0
 [ 2263.122581]  ? devl_param_driverinit_value_get+0x29/0x90
 [ 2263.123070]  mlx5_rescan_drivers_locked+0xc4/0x2d0 [mlx5_core]
 [ 2263.123633]  mlx5_unregister_device+0x54/0x80 [mlx5_core]
 [ 2263.124169]  mlx5_uninit_one+0x54/0x150 [mlx5_core]
 [ 2263.124656]  mlx5_sf_dev_remove+0x45/0x90 [mlx5_core]
 [ 2263.125153]  auxiliary_bus_remove+0x18/0x30
 [ 2263.125560]  device_release_driver_internal+0x18f/0x1f0
 [ 2263.126052]  bus_remove_device+0xc6/0x130
 [ 2263.126451]  device_del+0x173/0x3c0
 [ 2263.126815]  mlx5_sf_dev_remove+0x39/0xf0 [mlx5_core]
 [ 2263.127318]  mlx5_sf_dev_state_change_handler+0x178/0x270 [mlx5_core]
 [ 2263.127920]  blocking_notifier_call_chain+0x5a/0x80
 [ 2263.128379]  mlx5_vhca_state_work_handler+0x151/0x200 [mlx5_core]
 [ 2263.128951]  process_one_work+0x1bb/0x3c0
 [ 2263.129355]  ? process_one_work+0x3c0/0x3c0
 [ 2263.129766]  worker_thread+0x4d/0x3c0
 [ 2263.130140]  ? process_one_work+0x3c0/0x3c0
 [ 2263.130548]  kthread+0xb9/0xe0
 [ 2263.130895]  ? kthread_complete_and_exit+0x20/0x20
 [ 2263.131349]  ret_from_fork+0x1f/0x30
 [ 2263.131717]  </TASK>

The fix is to disable and destroy the workqueue after the device
unregister. It is expected that vhost will not trigger kicks after
the unregister. But even if it would, the wq is disabled already by
setting the pointer to NULL (done so in the referenced commit).

Fixes: ad6dc1da

 ("vdpa/mlx5: Avoid processing works if workqueue was destroyed")
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Message-Id: <20230516095800.3549932-1-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Acked-by: Jason Wang <jasowang@redhat.com>

Ignore executables for ringtest.

Signed-off-by: Rong Tao <rongtao@cestc.cn>
Message-Id: <tencent_C121802C93CB4095C6D7D95113442E830A07@qq.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Add cpu_relax() for arm64 instead of directly assert(), and add assert.h
header file. Also, add smp_wmb and smp_mb for arm64.

Compilation error as follows, avoid __always_inline undefined.

    $ make
    cc -Wall -pthread -O2 -ggdb -flto -fwhole-program -c -o ring.o ring.c
    In file included from ring.c:10:
    main.h: In function ‘busy_wait’:
    main.h:99:21: warning: implicit declaration of function ‘assert’
    [-Wimplicit-function-declaration]
    99 | #define cpu_relax() assert(0)
        |                     ^~~~~~
    main.h:107:17: note: in expansion of macro ‘cpu_relax’
    107 |                 cpu_relax();
        |                 ^~~~~~~~~
    main.h:12:1: note: ‘assert’ is defined in header ‘<assert.h>’; did you
    forget to ‘#include <assert.h>’?
    11 | #include <stdbool.h>
    +++ |+#include <assert.h>
    12 |
    main.h: At top level:
    main.h:143:23: error: expected ‘;’ before ‘void’
    143 | static __always_inline
        |                       ^
        |                       ;
    144 | void __read_once_size(const volatile void *p, void *res, int
    size)
        | ~~~~
    main.h:158:23: error: expected ‘;’ before ‘void’
    158 | static __always_inline void __write_once_size(volatile void *p,
    void *res, int size)
        |                       ^~~~~
        |                       ;
    make: *** [<builtin>: ring.o] Error 1

Signed-off-by: Rong Tao <rongtao@cestc.cn>
Message-Id: <tencent_F53E159DD7925174445D830DA19FACF44B07@qq.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>