commit 779dbc2e ("printk: Avoid non-panic CPUs writing
to ringbuffer") disabled non-panic CPUs to further write messages to
ringbuffer after panicked.

Since the commit, non-panicked CPU's are not allowed to write to
ring buffer after panicked and CPU backtrace which is triggered
after panicked to sample non-panicked CPUs' backtrace no longer
serves its function as it has nothing to print.

Fix the issue by allowing non-panicked CPUs to write into ringbuffer
while CPU backtrace is in flight.

Fixes: 779dbc2e ("printk: Avoid non-panic CPUs writing to ringbuffer")
Signed-off-by: Ryo Takakura <takakura@valinux.co.jp>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240812072703.339690-1-takakura@valinux.co.jpSigned-off-by: Petr Mladek <pmladek@suse.com>

Pull printk updates from Petr Mladek:

 - trivial printk changes

The bigger "real" printk work is still being discussed.

* tag 'printk-for-6.11-trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  vsprintf: add missing MODULE_DESCRIPTION() macro
  printk: Rename console_replay_all() and update context

Pull sysctl constification from Joel Granados:
 "Treewide constification of the ctl_table argument of proc_handlers
  using a coccinelle script and some manual code formatting fixups.

  This is a prerequisite to moving the static ctl_table structs into
  read-only data section which will ensure that proc_handler function
  pointers cannot be modified"

* tag 'constfy-sysctl-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl:
  sysctl: treewide: constify the ctl_table argument of proc_handlers

Pull EFI fixes from Ard Biesheuvel:

 - Wipe screen_info after allocating it from the heap - used by arm32
   and EFI zboot, other EFI architectures allocate it statically

 - Revert to allocating boot_params from the heap on x86 when entering
   via the native PE entrypoint, to work around a regression on older
   Dell hardware

* tag 'efi-fixes-for-v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  x86/efistub: Revert to heap allocated boot_params for PE entrypoint
  efi/libstub: Zero initialize heap allocated struct screen_info

Pull kgdb updates from Daniel Thompson:
 "Three small changes this cycle:

   - Clean up an architecture abstraction that is no longer needed
     because all the architectures have converged.

   - Actually use the prompt argument to kdb_position_cursor() instead
     of ignoring it (functionally this fix is a nop but that was due to
     luck rather than good judgement)

   - Fix a -Wformat-security warning"

* tag 'kgdb-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
  kdb: Get rid of redundant kdb_curr_task()
  kdb: Use the passed prompt in kdb_position_cursor()
  kdb: address -Wformat-security warnings

Pull MIPS updates from Thomas Bogendoerfer:

 - Use improved timer sync for Loongson64

 - Fix address of GCR_ACCESS register

 - Add missing MODULE_DESCRIPTION

* tag 'mips_6.11_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  mips: sibyte: add missing MODULE_DESCRIPTION() macro
  MIPS: SMP-CPS: Fix address for GCR_ACCESS register for CM3 and later
  MIPS: Loongson64: Switch to SYNC_R4K

Merge tag 'parisc-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc updates from Helge Deller:
 "The gettimeofday() and clock_gettime() syscalls are now available as
  vDSO functions, and Dave added a patch which allows to use NVMe cards
  in the PCI slots as fast and easy alternative to SCSI discs.

  Summary:

   - add gettimeofday() and clock_gettime() vDSO functions

   - enable PCI_MSI_ARCH_FALLBACKS to allow PCI to PCIe bridge adaptor
     with PCIe NVME card to function in parisc machines

   - allow users to reduce kernel unaligned runtime warnings

   - minor code cleanups"

* tag 'parisc-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Add support for CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
  parisc: Use max() to calculate parisc_tlb_flush_threshold
  parisc: Fix warning at drivers/pci/msi/msi.h:121
  parisc: Add 64-bit gettimeofday() and clock_gettime() vDSO functions
  parisc: Add 32-bit gettimeofday() and clock_gettime() vDSO functions
  parisc: Clean up unistd.h file

Pull UML updates from Richard Weinberger:

 - Support for preemption

 - i386 Rust support

 - Huge cleanup by Benjamin Berg

 - UBSAN support

 - Removal of dead code

* tag 'uml-for-linus-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (41 commits)
  um: vector: always reset vp->opened
  um: vector: remove vp->lock
  um: register power-off handler
  um: line: always fill *error_out in setup_one_line()
  um: remove pcap driver from documentation
  um: Enable preemption in UML
  um: refactor TLB update handling
  um: simplify and consolidate TLB updates
  um: remove force_flush_all from fork_handler
  um: Do not flush MM in flush_thread
  um: Delay flushing syscalls until the thread is restarted
  um: remove copy_context_skas0
  um: remove LDT support
  um: compress memory related stub syscalls while adding them
  um: Rework syscall handling
  um: Add generic stub_syscall6 function
  um: Create signal stack memory assignment in stub_data
  um: Remove stub-data.h include from common-offsets.h
  um: time-travel: fix signal blocking race/hang
  um: time-travel: remove time_exit()
  ...

Merge tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the big set of driver core changes for 6.11-rc1.

  Lots of stuff in here, with not a huge diffstat, but apis are evolving
  which required lots of files to be touched. Highlights of the changes
  in here are:

   - platform remove callback api final fixups (Uwe took many releases
     to get here, finally!)

   - Rust bindings for basic firmware apis and initial driver-core
     interactions.

     It's not all that useful for a "write a whole driver in rust" type
     of thing, but the firmware bindings do help out the phy rust
     drivers, and the driver core bindings give a solid base on which
     others can start their work.

     There is still a long way to go here before we have a multitude of
     rust drivers being added, but it's a great first step.

   - driver core const api changes.

     This reached across all bus types, and there are some fix-ups for
     some not-common bus types that linux-next and 0-day testing shook
     out.

     This work is being done to help make the rust bindings more safe,
     as well as the C code, moving toward the end-goal of allowing us to
     put driver structures into read-only memory. We aren't there yet,
     but are getting closer.

   - minor devres cleanups and fixes found by code inspection

   - arch_topology minor changes

   - other minor driver core cleanups

  All of these have been in linux-next for a very long time with no
  reported problems"

* tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits)
  ARM: sa1100: make match function take a const pointer
  sysfs/cpu: Make crash_hotplug attribute world-readable
  dio: Have dio_bus_match() callback take a const *
  zorro: make match function take a const pointer
  driver core: module: make module_[add|remove]_driver take a const *
  driver core: make driver_find_device() take a const *
  driver core: make driver_[create|remove]_file take a const *
  firmware_loader: fix soundness issue in `request_internal`
  firmware_loader: annotate doctests as `no_run`
  devres: Correct code style for functions that return a pointer type
  devres: Initialize an uninitialized struct member
  devres: Fix memory leakage caused by driver API devm_free_percpu()
  devres: Fix devm_krealloc() wasting memory
  driver core: platform: Switch to use kmemdup_array()
  driver core: have match() callback in struct bus_type take a const *
  MAINTAINERS: add Rust device abstractions to DRIVER CORE
  device: rust: improve safety comments
  MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer
  MAINTAINERS: add Rust FW abstractions to FIRMWARE LOADER
  firmware: rust: improve safety comments
  ...

Pull watchdog updates from Wim Van Sebroeck:

 - make watchdog_class const

 - rework of the rzg2l_wdt driver

 - other small fixes and improvements

* tag 'linux-watchdog-6.11-rc1' of git://www.linux-watchdog.org/linux-watchdog:
  dt-bindings: watchdog: dlg,da9062-watchdog: Drop blank space
  watchdog: rzn1: Convert comma to semicolon
  watchdog: lenovo_se10_wdt: Convert comma to semicolon
  dt-bindings: watchdog: renesas,wdt: Document RZ/G3S support
  watchdog: rzg2l_wdt: Add suspend/resume support
  watchdog: rzg2l_wdt: Rely on the reset driver for doing proper reset
  watchdog: rzg2l_wdt: Remove comparison with zero
  watchdog: rzg2l_wdt: Remove reset de-assert from probe
  watchdog: rzg2l_wdt: Check return status of pm_runtime_put()
  watchdog: rzg2l_wdt: Use pm_runtime_resume_and_get()
  watchdog: rzg2l_wdt: Make the driver depend on PM
  watchdog: rzg2l_wdt: Restrict the driver to ARCH_RZG2L and ARCH_R9A09G011
  watchdog: imx7ulp_wdt: keep already running watchdog enabled
  watchdog: starfive: Add missing clk_disable_unprepare()
  watchdog: Make watchdog_class const

Pull dma-mapping fix from Christoph Hellwig:

 - fix the order of actions in dmam_free_coherent (Lance Richardson)

* tag 'dma-mapping-6.11-2024-07-24' of git://git.infradead.org/users/hch/dma-mapping:
  dma: fix call order in dmam_free_coherent

Pull phy updates from Vinod Koul:
 "New Support
   - Samsung Exynos gs101 drd combo phy
   - Qualcomm SC8180x USB uniphy, IPQ9574 QMP PCIe phy
   - Airoha EN7581 PCIe phy
   - Freescale i.MX8Q HSIO SerDes phy
   - Starfive jh7110 dphy tx

  Updates:
   - Resume support for j721e-wiz driver
   - Updates to Exynos usbdrd driver
   - Support for optional power domains in g12a usb2-phy driver
   - Debugfs support and updates to zynqmp driver"

* tag 'phy-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (56 commits)
  phy: airoha: Add dtime and Rx AEQ IO registers
  dt-bindings: phy: airoha: Add dtime and Rx AEQ IO registers
  dt-bindings: phy: rockchip-emmc-phy: Convert to dtschema
  dt-bindings: phy: qcom,qmp-usb: fix spelling error
  phy: exynos5-usbdrd: support Exynos USBDRD 3.1 combo phy (HS & SS)
  phy: exynos5-usbdrd: convert Vbus supplies to regulator_bulk
  phy: exynos5-usbdrd: convert (phy) register access clock to clk_bulk
  phy: exynos5-usbdrd: convert core clocks to clk_bulk
  phy: exynos5-usbdrd: support isolating HS and SS ports independently
  dt-bindings: phy: samsung,usb3-drd-phy: add gs101 compatible
  phy: core: Fix documentation of of_phy_get
  phy: starfive: Correct the dphy configure process
  phy: zynqmp: Add debugfs support
  phy: zynqmp: Take the phy mutex in xlate
  phy: zynqmp: Only wait for PLL lock "primary" instances
  phy: zynqmp: Store instance instead of type
  phy: zynqmp: Enable reference clock correctly
  phy: cadence-torrent: Check return value on register read
  phy: Fix the cacography in phy-exynos5250-usb2.c
  phy: phy-rockchip-samsung-hdptx: Select CONFIG_MFD_SYSCON
  ...

Pull soundwire updates from Vinod Koul:

 - Simplification across subsystem using cleanup.h

 - Support for debugfs to read/write commands

 - Few Intel and Qualcomm driver updates

* tag 'soundwire-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
  soundwire: debugfs: simplify with cleanup.h
  soundwire: cadence: simplify with cleanup.h
  soundwire: intel_ace2x: simplify with cleanup.h
  soundwire: intel_ace2x: simplify return path in hw_params
  soundwire: intel: simplify with cleanup.h
  soundwire: intel: simplify return path in hw_params
  soundwire: amd_init: simplify with cleanup.h
  soundwire: amd: simplify with cleanup.h
  soundwire: amd: simplify return path in hw_params
  soundwire: intel_auxdevice: start the bus at default frequency
  soundwire: intel_auxdevice: add cs42l43 codec to wake_capable_list
  drivers:soundwire: qcom: cleanup port maask calculations
  soundwire: bus: simplify by using local slave->prop
  soundwire: generic_bandwidth_allocation: change port_bo parameter to pointer
  soundwire: Intel: clarify Copyright information
  soundwire: intel_ace2.x: add AC timing extensions for PantherLake
  soundwire: bus: add stream refcount
  soundwire: debugfs: add interface to read/write commands

Pull dmaengine updates from Vinod Koul:
 "New support:

   - New dmaengine_prep_peripheral_dma_vec() to support transfers using
     dma vectors and documentation and user in AXI dma

   - STMicro STM32 DMA3 support and new capabilities of cyclic dma

  Updates:

   - Yaml conversion for Freescale imx dma and qdma bindings,
     sprd sc9860 dma binding

   - Altera msgdma updates for descriptor management"

* tag 'dmaengine-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (35 commits)
  dt-bindings: fsl-qdma: fix interrupts 'if' check logic
  dt-bindings: dma: sprd,sc9860-dma: convert to YAML
  dmaengine: fsl-dpaa2-qdma: add missing MODULE_DESCRIPTION() macro
  dmaengine: ti: add missing MODULE_DESCRIPTION() macros
  dmaengine: ti: cppi41: add missing MODULE_DESCRIPTION() macro
  dmaengine: virt-dma: add missing MODULE_DESCRIPTION() macro
  dmaengine: ti: k3-udma: Fix BCHAN count with UHC and HC channels
  dmaengine: sh: rz-dmac: Fix lockdep assert warning
  dmaengine: qcom: gpi: clean up the IRQ disable/enable in gpi_reset_chan()
  dmaengine: fsl-edma: change the memory access from local into remote mode in i.MX 8QM
  dmaengine: qcom: gpi: remove unused struct 'reg_info'
  dmaengine: moxart-dma: remove unused struct 'moxart_filter_data'
  dt-bindings: fsl-qdma: Convert to yaml format
  dmaengine: fsl-edma: remove redundant "idle" field from fsl_chan
  dmaengine: fsl-edma: request per-channel IRQ only when channel is allocated
  dmaengine: stm32-dma3: defer channel registration to specify channel name
  dmaengine: add channel device name to channel registration
  dmaengine: stm32-dma3: improve residue granularity
  dmaengine: stm32-dma3: add device_pause and device_resume ops
  dmaengine: stm32-dma3: add DMA_MEMCPY capability
  ...

const qualify the struct ctl_table argument in the proc_handler function
signatures. This is a prerequisite to moving the static ctl_table
structs into .rodata data which will ensure that proc_handler function
pointers cannot be modified.

This patch has been generated by the following coccinelle script:

```
  virtual patch

  @r1@
  identifier ctl, write, buffer, lenp, ppos;
  identifier func !~ "appldata_(timer|interval)_handler|sched_(rt|rr)_handler|rds_tcp_skbuf_handler|proc_sctp_do_(hmac_alg|rto_min|rto_max|udp_port|alpha_beta|auth|probe_interval)";
  @@

  int func(
  - struct ctl_table *ctl
  + const struct ctl_table *ctl
    ,int write, void *buffer, size_t *lenp, loff_t *ppos);

  @r2@
  identifier func, ctl, write, buffer, lenp, ppos;
  @@

  int func(
  - struct ctl_table *ctl
  + const struct ctl_table *ctl
    ,int write, void *buffer, size_t *lenp, loff_t *ppos)
  { ... }

  @r3@
  identifier func;
  @@

  int func(
  - struct ctl_table *
  + const struct ctl_table *
    ,int , void *, size_t *, loff_t *);

  @r4@
  identifier func, ctl;
  @@

  int func(
  - struct ctl_table *ctl
  + const struct ctl_table *ctl
    ,int , void *, size_t *, loff_t *);

  @r5@
  identifier func, write, buffer, lenp, ppos;
  @@

  int func(
  - struct ctl_table *
  + const struct ctl_table *
    ,int write, void *buffer, size_t *lenp, loff_t *ppos);

```

* Code formatting was adjusted in xfs_sysctl.c to comply with code
  conventions. The xfs_stats_clear_proc_handler,
  xfs_panic_mask_proc_handler and xfs_deprecated_dointvec_minmax where
  adjusted.

* The ctl_table argument in proc_watchdog_common was const qualified.
  This is called from a proc_handler itself and is calling back into
  another proc_handler, making it necessary to change it as part of the
  proc_handler migration.
Co-developed-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Co-developed-by: Joel Granados <j.granados@samsung.com>
Signed-off-by: Joel Granados <j.granados@samsung.com>

Pull random number generator updates from Jason Donenfeld:
 "This adds getrandom() support to the vDSO.

  First, it adds a new kind of mapping to mmap(2), MAP_DROPPABLE, which
  lets the kernel zero out pages anytime under memory pressure, which
  enables allocating memory that never gets swapped to disk but also
  doesn't count as being mlocked.

  Then, the vDSO implementation of getrandom() is introduced in a
  generic manner and hooked into random.c.

  Next, this is implemented on x86. (Also, though it's not ready for
  this pull, somebody has begun an arm64 implementation already)

  Finally, two vDSO selftests are added.

  There are also two housekeeping cleanup commits"

* tag 'random-6.11-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
  MAINTAINERS: add random.h headers to RNG subsection
  random: note that RNDGETPOOL was removed in 2.6.9-rc2
  selftests/vDSO: add tests for vgetrandom
  x86: vdso: Wire up getrandom() vDSO implementation
  random: introduce generic vDSO getrandom() implementation
  mm: add MAP_DROPPABLE for designating always lazily freeable mappings

Pull vfs fixes from Christian Brauner:
 "VFS:

   - The new 64bit mount ids start after the old mount id, i.e., at the
     first non-32 bit value. However, we started counting one id too
     late and thus lost 4294967296 as the first valid id. Fix that.

   - Update a few comments on some vfs_*() creation helpers.

   - Move copying of the xattr name out from the locks required to start
     a filesystem write.

   - Extend the filelock lock UAF fix to the compat code as well.

   - Now that we added the ability to look up an inode under RCU it's
     possible that lockless hash lookup can find and lock an inode after
     it gets I_FREEING set. It then waits until inode teardown in
     evict() is finished.

     The flag however is still set after evict() has woken up all
     waiters. If the inode lock is taken late enough on the waiting side
     after hash removal and wakeup happened the waiting thread will
     never be woken.

     Before RCU based lookup this was synchronized via the
     inode_hash_lock. But since unhashing requires the inode lock as
     well we can check whether the inode is unhashed while holding inode
     lock even without holding inode_hash_lock.

  pidfd:

   - The nsproxy structure contains nearly all of the namespaces
     associated with a task. When a namespace type isn't supported
     nsproxy might contain a NULL pointer or always point to the initial
     namespace type. The logic isn't consistent. So when deriving
     namespace fds we need to ensure that the namespace type is
     supported.

     First, so that we don't risk dereferncing NULL pointers. The
     correct bigger fix would be to change all namespaces to always set
     a valid namespace pointer in struct nsproxy independent of whether
     or not it is compiled in. But that requires quite a few changes.

     Second, so that we don't allow deriving namespace fds when the
     namespace type doesn't exist and thus when they couldn't also be
     derived via /proc/self/ns/.

   - Add missing selftests for the new pidfd ioctls to derive namespace
     fds. This simply extends the already existing testsuite.

  netfs:

   - Fix debug logging and fix kconfig variable name so it actually
     works.

   - Fix writeback that goes both to the server and cache. The streams
     are only activated once a subreq is added. When a server write
     happens the subreq doesn't need to have finished by the time the
     cache write is started. If the server write has already finished by
     the time the cache write is about to start the cache write will
     operate on a folio that might already have been reused. Fix this by
     preactivating the cache write.

   - Limit cachefiles subreq size for cache writes to MAX_RW_COUNT"

* tag 'vfs-6.11-rc1.fixes.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  inode: clarify what's locked
  vfs: Fix potential circular locking through setxattr() and removexattr()
  filelock: Fix fcntl/close race recovery compat path
  fs: use all available ids
  cachefiles: Set the max subreq size for cache writes to MAX_RW_COUNT
  netfs: Fix writeback that needs to go to both server and cache
  pidfs: add selftests for new namespace ioctls
  pidfs: handle kernels without namespaces cleanly
  pidfs: when time ns disabled add check for ioctl
  vfs: correct the comments of vfs_*() helpers
  vfs: handle __wait_on_freeing_inode() and evict() race
  netfs: Rename CONFIG_FSCACHE_DEBUG to CONFIG_NETFS_DEBUG
  netfs: Revert "netfs: Switch debug logging to pr_debug()"

Commit e3ec0fe9 ("hostfs: Convert hostfs_read_folio() to use a
folio") simplified hostfs_read_folio(), but in the process of converting
to using folios natively also mis-used the folio_zero_tail() function
due to the very confusing API of that function.

Very arguably it's folio_zero_tail() API itself that is buggy, since it
would make more sense (and the documentation kind of implies) that the
third argument would be the pointer to the beginning of the folio
buffer.

But no, the third argument to folio_zero_tail() is where we should start
zeroing the tail (even if we already also pass in the offset separately
as the second argument).

So fix the hostfs caller, and we can leave any folio_zero_tail() sanity
cleanup for later.
Reported-and-tested-by: Maciej Żenczykowski <maze@google.com>
Fixes: e3ec0fe9 ("hostfs: Convert hostfs_read_folio() to use a folio")
Link: https://lore.kernel.org/all/CANP3RGceNzwdb7w=vPf5=7BCid5HVQDmz1K5kC9JG42+HVAh_g@mail.gmail.com/
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Christian Brauner <brauner@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

In __wait_on_freeing_inode() we warn in case the inode_hash_lock is held
but the inode is unhashed. We then release the inode_lock. So using
"locked" as parameter name is confusing. Use is_inode_hash_locked as
parameter name instead.
Signed-off-by: Christian Brauner <brauner@kernel.org>

When using cachefiles, lockdep may emit something similar to the circular
locking dependency notice below.  The problem appears to stem from the
following:

 (1) Cachefiles manipulates xattrs on the files in its cache when called
     from ->writepages().

 (2) The setxattr() and removexattr() system call handlers get the name
     (and value) from userspace after taking the sb_writers lock, putting
     accesses of the vma->vm_lock and mm->mmap_lock inside of that.

 (3) The afs filesystem uses a per-inode lock to prevent multiple
     revalidation RPCs and in writeback vs truncate to prevent parallel
     operations from deadlocking against the server on one side and local
     page locks on the other.

Fix this by moving the getting of the name and value in {get,remove}xattr()
outside of the sb_writers lock.  This also has the minor benefits that we
don't need to reget these in the event of a retry and we never try to take
the sb_writers lock in the event we can't pull the name and value into the
kernel.

Alternative approaches that might fix this include moving the dispatch of a
write to the cache off to a workqueue or trying to do without the
validation lock in afs.  Note that this might also affect other filesystems
that use netfslib and/or cachefiles.

 ======================================================
 WARNING: possible circular locking dependency detected
 6.10.0-build2+ #956 Not tainted
 ------------------------------------------------------
 fsstress/6050 is trying to acquire lock:
 ffff888138fd82f0 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_fault+0x26e/0x8b0

 but task is already holding lock:
 ffff888113f26d18 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x165/0x250

 which lock already depends on the new lock.

 the existing dependency chain (in reverse order) is:

 -> #4 (&vma->vm_lock->lock){++++}-{3:3}:
        __lock_acquire+0xaf0/0xd80
        lock_acquire.part.0+0x103/0x280
        down_write+0x3b/0x50
        vma_start_write+0x6b/0xa0
        vma_link+0xcc/0x140
        insert_vm_struct+0xb7/0xf0
        alloc_bprm+0x2c1/0x390
        kernel_execve+0x65/0x1a0
        call_usermodehelper_exec_async+0x14d/0x190
        ret_from_fork+0x24/0x40
        ret_from_fork_asm+0x1a/0x30

 -> #3 (&mm->mmap_lock){++++}-{3:3}:
        __lock_acquire+0xaf0/0xd80
        lock_acquire.part.0+0x103/0x280
        __might_fault+0x7c/0xb0
        strncpy_from_user+0x25/0x160
        removexattr+0x7f/0x100
        __do_sys_fremovexattr+0x7e/0xb0
        do_syscall_64+0x9f/0x100
        entry_SYSCALL_64_after_hwframe+0x76/0x7e

 -> #2 (sb_writers#14){.+.+}-{0:0}:
        __lock_acquire+0xaf0/0xd80
        lock_acquire.part.0+0x103/0x280
        percpu_down_read+0x3c/0x90
        vfs_iocb_iter_write+0xe9/0x1d0
        __cachefiles_write+0x367/0x430
        cachefiles_issue_write+0x299/0x2f0
        netfs_advance_write+0x117/0x140
        netfs_write_folio.isra.0+0x5ca/0x6e0
        netfs_writepages+0x230/0x2f0
        afs_writepages+0x4d/0x70
        do_writepages+0x1e8/0x3e0
        filemap_fdatawrite_wbc+0x84/0xa0
        __filemap_fdatawrite_range+0xa8/0xf0
        file_write_and_wait_range+0x59/0x90
        afs_release+0x10f/0x270
        __fput+0x25f/0x3d0
        __do_sys_close+0x43/0x70
        do_syscall_64+0x9f/0x100
        entry_SYSCALL_64_after_hwframe+0x76/0x7e

 -> #1 (&vnode->validate_lock){++++}-{3:3}:
        __lock_acquire+0xaf0/0xd80
        lock_acquire.part.0+0x103/0x280
        down_read+0x95/0x200
        afs_writepages+0x37/0x70
        do_writepages+0x1e8/0x3e0
        filemap_fdatawrite_wbc+0x84/0xa0
        filemap_invalidate_inode+0x167/0x1e0
        netfs_unbuffered_write_iter+0x1bd/0x2d0
        vfs_write+0x22e/0x320
        ksys_write+0xbc/0x130
        do_syscall_64+0x9f/0x100
        entry_SYSCALL_64_after_hwframe+0x76/0x7e

 -> #0 (mapping.invalidate_lock#3){++++}-{3:3}:
        check_noncircular+0x119/0x160
        check_prev_add+0x195/0x430
        __lock_acquire+0xaf0/0xd80
        lock_acquire.part.0+0x103/0x280
        down_read+0x95/0x200
        filemap_fault+0x26e/0x8b0
        __do_fault+0x57/0xd0
        do_pte_missing+0x23b/0x320
        __handle_mm_fault+0x2d4/0x320
        handle_mm_fault+0x14f/0x260
        do_user_addr_fault+0x2a2/0x500
        exc_page_fault+0x71/0x90
        asm_exc_page_fault+0x22/0x30

 other info that might help us debug this:

 Chain exists of:
   mapping.invalidate_lock#3 --> &mm->mmap_lock --> &vma->vm_lock->lock

  Possible unsafe locking scenario:

        CPU0                    CPU1
        ----                    ----
   rlock(&vma->vm_lock->lock);
                                lock(&mm->mmap_lock);
                                lock(&vma->vm_lock->lock);
   rlock(mapping.invalidate_lock#3);

  *** DEADLOCK ***

 1 lock held by fsstress/6050:
  #0: ffff888113f26d18 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x165/0x250

 stack backtrace:
 CPU: 0 PID: 6050 Comm: fsstress Not tainted 6.10.0-build2+ #956
 Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014
 Call Trace:
  <TASK>
  dump_stack_lvl+0x57/0x80
  check_noncircular+0x119/0x160
  ? queued_spin_lock_slowpath+0x4be/0x510
  ? __pfx_check_noncircular+0x10/0x10
  ? __pfx_queued_spin_lock_slowpath+0x10/0x10
  ? mark_lock+0x47/0x160
  ? init_chain_block+0x9c/0xc0
  ? add_chain_block+0x84/0xf0
  check_prev_add+0x195/0x430
  __lock_acquire+0xaf0/0xd80
  ? __pfx___lock_acquire+0x10/0x10
  ? __lock_release.isra.0+0x13b/0x230
  lock_acquire.part.0+0x103/0x280
  ? filemap_fault+0x26e/0x8b0
  ? __pfx_lock_acquire.part.0+0x10/0x10
  ? rcu_is_watching+0x34/0x60
  ? lock_acquire+0xd7/0x120
  down_read+0x95/0x200
  ? filemap_fault+0x26e/0x8b0
  ? __pfx_down_read+0x10/0x10
  ? __filemap_get_folio+0x25/0x1a0
  filemap_fault+0x26e/0x8b0
  ? __pfx_filemap_fault+0x10/0x10
  ? find_held_lock+0x7c/0x90
  ? __pfx___lock_release.isra.0+0x10/0x10
  ? __pte_offset_map+0x99/0x110
  __do_fault+0x57/0xd0
  do_pte_missing+0x23b/0x320
  __handle_mm_fault+0x2d4/0x320
  ? __pfx___handle_mm_fault+0x10/0x10
  handle_mm_fault+0x14f/0x260
  do_user_addr_fault+0x2a2/0x500
  exc_page_fault+0x71/0x90
  asm_exc_page_fault+0x22/0x30
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/2136178.1721725194@warthog.procyon.org.uk
cc: Alexander Viro <viro@zeniv.linux.org.uk>
cc: Christian Brauner <brauner@kernel.org>
cc: Jan Kara <jack@suse.cz>
cc: Jeff Layton <jlayton@kernel.org>
cc: Gao Xiang <xiang@kernel.org>
cc: Matthew Wilcox <willy@infradead.org>
cc: netfs@lists.linux.dev
cc: linux-erofs@lists.ozlabs.org
cc: linux-fsdevel@vger.kernel.org
[brauner: fix minor issues]
Signed-off-by: Christian Brauner <brauner@kernel.org>

When I wrote commit 3cad1bc0 ("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.

Fixes: c293621b ("[PATCH] stale POSIX lock handling")
Cc: stable@kernel.org
Link: https://bugs.chromium.org/p/project-zero/issues/detail?id=2563Signed-off-by: Jann Horn <jannh@google.com>
Link: https://lore.kernel.org/r/20240723-fs-lock-recover-compatfix-v1-1-148096719529@google.comSigned-off-by: Christian Brauner <brauner@kernel.org>

The counter is unconditionally incremented for each mount allocation.
If we set it to 1ULL << 32 we're losing 4294967296 as the first valid
non-32 bit mount id.

Link: https://lore.kernel.org/r/20240719-work-mount-namespace-v1-1-834113cab0d2@kernel.orgReviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

Set the maximum size of a subrequest that writes to cachefiles to be
MAX_RW_COUNT so that we don't overrun the maximum write we can make to the
backing filesystem.
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/1599005.1721398742@warthog.procyon.org.uk
cc: Jeff Layton <jlayton@kernel.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

When netfslib is performing writeback (ie. ->writepages), it maintains two
parallel streams of writes, one to the server and one to the cache, but it
doesn't mark either stream of writes as active until it gets some data that
needs to be written to that stream.

This is done because some folios will only be written to the cache
(e.g. copying to the cache on read is done by marking the folios and
letting writeback do the actual work) and sometimes we'll only be writing
to the server (e.g. if there's no cache).

Now, since we don't actually dispatch uploads and cache writes in parallel,
but rather flip between the streams, depending on which has the lowest
so-far-issued offset, and don't wait for the subreqs to finish before
flipping, we can end up in a situation where, say, we issue a write to the
server and this completes before we start the write to the cache.

But because we only activate a stream when we first add a subreq to it, the
result collection code may run before we manage to activate the stream -
resulting in the folio being cleaned and having the writeback-in-progress
mark removed.  At this point, the folio no longer belongs to us.

This is only really a problem for folios that need to be written to both
streams - and in that case, the upload to the server is started first,
followed by the write to the cache - and the cache write may see a bad
folio.

Fix this by activating the cache stream up front if there's a cache
available.  If there's a cache, then all data is going to be written to it.

Fixes: 288ace2f ("netfs: New writeback implementation")
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/1599053.1721398818@warthog.procyon.org.uk
cc: Jeff Layton <jlayton@kernel.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

Add selftests to verify that deriving namespace file descriptors from
pidfd file descriptors works correctly.

Link: https://lore.kernel.org/r/20240722-work-pidfs-69dbea91edab@braunerSigned-off-by: Christian Brauner <brauner@kernel.org>

The nsproxy structure contains nearly all of the namespaces associated
with a task. When a given namespace type is not supported by this kernel
the rules whether the corresponding pointer in struct nsproxy is NULL or
always init_<ns_type>_ns differ per namespace. Ideally, that wouldn't be
the case and for all namespace types we'd always set it to
init_<ns_type>_ns when the corresponding namespace type isn't supported.

Make sure we handle all namespaces where the pointer in struct nsproxy
can be NULL when the namespace type isn't supported.

Link: https://lore.kernel.org/r/20240722-work-pidfs-e6a83030f63e@brauner
Fixes: 5b08bd40 ("pidfs: allow retrieval of namespace file descriptors") # mainline only
Signed-off-by: Christian Brauner <brauner@kernel.org>

syzbot call pidfd_ioctl() with cmd "PIDFD_GET_TIME_NAMESPACE" and disabled
CONFIG_TIME_NS, since time_ns is NULL, it will make NULL ponter deref in
open_namespace.

Fixes: 5b08bd40 ("pidfs: allow retrieval of namespace file descriptors") # mainline only
Reported-and-tested-by: syzbot+34a0ee986f61f15da35d@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=34a0ee986f61f15da35dSigned-off-by: Edward Adam Davis <eadavis@qq.com>
Link: https://lore.kernel.org/r/tencent_7FAE8DB725EE0DD69236DDABDDDE195E4F07@qq.comSigned-off-by: Christian Brauner <brauner@kernel.org>

correct the comments of vfs_*() helpers in fs/namei.c, including:
1. vfs_create()
2. vfs_mknod()
3. vfs_mkdir()
4. vfs_rmdir()
5. vfs_symlink()

All of them come from the same commit:
6521f891 "namei: prepare for idmapped mounts"

The @dentry is actually the dentry of child directory rather than
base directory(parent directory), and thus the @dir has to be
modified due to the change of @dentry.
Signed-off-by: Congjie Zhou <zcjie0802@qq.com>
Link: https://lore.kernel.org/r/tencent_2FCF6CC9E10DC8A27AE58A5A0FE4FCE96D0A@qq.comSigned-off-by: Christian Brauner <brauner@kernel.org>

Lockless hash lookup can find and lock the inode after it gets the
I_FREEING flag set, at which point it blocks waiting for teardown in
evict() to finish.

However, the flag is still set even after evict() wakes up all waiters.

This results in a race where if the inode lock is taken late enough, it
can happen after both hash removal and wakeups, meaning there is nobody
to wake the racing thread up.

This worked prior to RCU-based lookup because the entire ordeal was
synchronized with the inode hash lock.

Since unhashing requires the inode lock, we can safely check whether it
happened after acquiring it.

Link: https://lore.kernel.org/v9fs/20240717102458.649b60be@kernel.org/Reported-by: Dominique Martinet <asmadeus@codewreck.org>
Fixes: 7180f8d9 ("vfs: add rcu-based find_inode variants for iget ops")
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://lore.kernel.org/r/20240718151838.611807-1-mjguzik@gmail.comReviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>

CONFIG_FSCACHE_DEBUG should have been renamed to CONFIG_NETFS_DEBUG, so do
that now.
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/1410796.1721333406@warthog.procyon.org.uk
cc: Uwe Kleine-König <ukleinek@kernel.org>
cc: Christian Brauner <brauner@kernel.org>
cc: Jeff Layton <jlayton@kernel.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

Revert commit 163eae0f to get back the
original operation of the debugging macros.
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20240608151352.22860-2-ukleinek@kernel.org
Link: https://lore.kernel.org/r/1410685.1721333252@warthog.procyon.org.uk
cc: Uwe Kleine-König <ukleinek@kernel.org>
cc: Christian Brauner <brauner@kernel.org>
cc: Jeff Layton <jlayton@kernel.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

Merge tag 'perf-tools-fixes-for-v6.11-2024-07-23' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tools fixes from Namhyung Kim:
 "Two fixes for building perf and other tools:

   - Fix breakage in tracing tools due to pkg-config for
     libtrace{event,fs}

   - Fix build of perf when libunwind is used"

* tag 'perf-tools-fixes-for-v6.11-2024-07-23' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
  perf dso: Fix build when libunwind is enabled
  tools/latency: Use pkg-config in lib_setup of Makefile.config
  tools/rtla: Use pkg-config in lib_setup of Makefile.config
  tools/verification: Use pkg-config in lib_setup of Makefile.config
  tools: Make pkg-config dependency checks usable by other tools
  perf build: Warn if libtracefs is not found

Pull execve fix from Kees Cook:
 "This moves the exec and binfmt_elf tests out of your way and into the
  tests/ subdirectory, following the newly ratified KUnit naming
  conventions. :)"

* tag 'execve-v6.11-rc1-fix1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  execve: Move KUnit tests to tests/ subdirectory

Allow users to disable kernel warnings for unaligned memory
accesses from kernel via the /proc/sys/kernel/ignore-unaligned-usertrap
procfs entry.
That way users can disable those warnings in case they happen too
often.
Signed-off-by: Helge Deller <deller@gmx.de>

Pull f2fs updates from Jaegeuk Kim:
 "A pretty small update including mostly minor bug fixes in zoned
  storage along with the large section support.

  Enhancements:
   - add support for FS_IOC_GETFSSYSFSPATH
   - enable atgc dynamically if conditions are met
   - use new ioprio Macro to get ckpt thread ioprio level
   - remove unreachable lazytime mount option parsing

  Bug fixes:
   - fix null reference error when checking end of zone
   - fix start segno of large section
   - fix to cover read extent cache access with lock
   - don't dirty inode for readonly filesystem
   - allocate a new section if curseg is not the first seg in its zone
   - only fragment segment in the same section
   - truncate preallocated blocks in f2fs_file_open()
   - fix to avoid use SSR allocate when do defragment
   - fix to force buffered IO on inline_data inode

  And some minor code clean-ups and sanity checks"

* tag 'f2fs-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (26 commits)
  f2fs: clean up addrs_per_{inode,block}()
  f2fs: clean up F2FS_I()
  f2fs: use meta inode for GC of COW file
  f2fs: use meta inode for GC of atomic file
  f2fs: only fragment segment in the same section
  f2fs: fix to update user block counts in block_operations()
  f2fs: remove unreachable lazytime mount option parsing
  f2fs: fix null reference error when checking end of zone
  f2fs: fix start segno of large section
  f2fs: remove redundant sanity check in sanity_check_inode()
  f2fs: assign CURSEG_ALL_DATA_ATGC if blkaddr is valid
  f2fs: fix to use mnt_{want,drop}_write_file replace file_{start,end}_wrtie
  f2fs: clean up set REQ_RAHEAD given rac
  f2fs: enable atgc dynamically if conditions are met
  f2fs: fix to truncate preallocated blocks in f2fs_file_open()
  f2fs: fix to cover read extent cache access with lock
  f2fs: fix return value of f2fs_convert_inline_inode()
  f2fs: use new ioprio Macro to get ckpt thread ioprio level
  f2fs: fix to don't dirty inode for readonly filesystem
  f2fs: fix to avoid use SSR allocate when do defragment
  ...

Pull jfs updates from David Kleikamp:
 "Folio conversion from Matthew Wilcox and a few various fixes"

* tag 'jfs-6.11' of github.com:kleikamp/linux-shaggy:
  jfs: don't walk off the end of ealist
  jfs: Fix shift-out-of-bounds in dbDiscardAG
  jfs: Fix array-index-out-of-bounds in diFree
  jfs: fix null ptr deref in dtInsertEntry
  jfs: Remove use of folio error flag
  fs: Remove i_blocks_per_page
  jfs: Change metapage->page to metapage->folio
  jfs: Convert force_metapage to use a folio
  jfs: Convert inc_io to take a folio
  jfs: Convert page_to_mp to folio_to_mp
  jfs; Convert __invalidate_metapages to use a folio
  jfs: Convert dec_io to take a folio
  jfs: Convert drop_metapage and remove_metapage to take a folio
  jfs; Convert release_metapage to use a folio
  jfs: Convert insert_metapage() to take a folio
  jfs: Convert __get_metapage to use a folio
  jfs: Convert metapage_writepage to metapage_write_folio
  jfs: Convert metapage_read_folio to use folio APIs

Pull Kbuild updates from Masahiro Yamada:

 - Remove tristate choice support from Kconfig

 - Stop using the PROVIDE() directive in the linker script

 - Reduce the number of links for the combination of CONFIG_KALLSYMS and
   CONFIG_DEBUG_INFO_BTF

 - Enable the warning for symbol reference to .exit.* sections by
   default

 - Fix warnings in RPM package builds

 - Improve scripts/make_fit.py to generate a FIT image with separate
   base DTB and overlays

 - Improve choice value calculation in Kconfig

 - Fix conditional prompt behavior in choice in Kconfig

 - Remove support for the uncommon EMAIL environment variable in Debian
   package builds

 - Remove support for the uncommon "name <email>" form for the DEBEMAIL
   environment variable

 - Raise the minimum supported GNU Make version to 4.0

 - Remove stale code for the absolute kallsyms

 - Move header files commonly used for host programs to scripts/include/

 - Introduce the pacman-pkg target to generate a pacman package used in
   Arch Linux

 - Clean up Kconfig

* tag 'kbuild-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (65 commits)
  kbuild: doc: gcc to CC change
  kallsyms: change sym_entry::percpu_absolute to bool type
  kallsyms: unify seq and start_pos fields of struct sym_entry
  kallsyms: add more original symbol type/name in comment lines
  kallsyms: use \t instead of a tab in printf()
  kallsyms: avoid repeated calculation of array size for markers
  kbuild: add script and target to generate pacman package
  modpost: use generic macros for hash table implementation
  kbuild: move some helper headers from scripts/kconfig/ to scripts/include/
  Makefile: add comment to discourage tools/* addition for kernel builds
  kbuild: clean up scripts/remove-stale-files
  kconfig: recursive checks drop file/lineno
  kbuild: rpm-pkg: introduce a simple changelog section for kernel.spec
  kallsyms: get rid of code for absolute kallsyms
  kbuild: Create INSTALL_PATH directory if it does not exist
  kbuild: Abort make on install failures
  kconfig: remove 'e1' and 'e2' macros from expression deduplication
  kconfig: remove SYMBOL_CHOICEVAL flag
  kconfig: add const qualifiers to several function arguments
  kconfig: call expr_eliminate_yn() at least once in expr_eliminate_dups()
  ...

Pull rpmsg updates from Bjorn Andersson:

 - fix interrupt handling in the stm32 remoteproc driver when being
   attached to an already running remote processor

 - fix invalid kernel-doc and add missing MODULE_DESCRIPTION() in the
   rpmsg char driver

* tag 'rpmsg-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
  rpmsg: char: add missing MODULE_DESCRIPTION() macro
  remoteproc: stm32_rproc: Fix mailbox interrupts queuing
  rpmsg: char: Fix rpmsg_eptdev structure documentation

Pull remoteproc updates from Bjorn Andersson:

 - The maximum amount of DDR memory used by the Mediatek MT8188/MT8195
   SCP is increased to handle new use cases. Handling of optional L1TCM
   memory is made actually optional.

 - An optimization is introduced to only clear the unused portion of IPI
   shared buffers, rather than the entire buffer before writing the
   message.

 - Detection for IPC-only mode in the TI K3 DSP remoteproc driver is
   corrected. The loglevel of a debug print in the same is lowered from
   error.

 - Support for attaching to an running remote processor is added to the
   Xilinx R5F.

 - An in-kernel implementation of the Qualcomm "protected domain mapper"
   (aka service registry) service is introduced, to remove the
   dependency on a userspace implementation to detect when the battery
   monitor and USB Type-C port manager becomes available. This is then
   integrated with the Qualcomm remoteproc driver.

 - The Qualcomm PAS remoteproc driver gains support for attempting to
   bust hwspinlocks held by the remote processor when it
   crashed/stopped.

 - The TI OMAP remoteproc driver is transitioned to use devres helpers
   for various forms of allocations.

 - Parsing of memory-regions in the i.MX remoteproc driver is improved
   to avoid a NULL pointer dereference if the phandle reference is
   empty. of_node reference counting is corrected in the same.

* tag 'rproc-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
  remoteproc: mediatek: Increase MT8188/MT8195 SCP core0 DRAM size
  remoteproc: k3-dsp: Fix log levels where appropriate
  remoteproc: xlnx: Add attach detach support
  remoteproc: qcom: select AUXILIARY_BUS
  remoteproc: k3-r5: Fix IPC-only mode detection
  remoteproc: mediatek: Don't attempt to remap l1tcm memory if missing
  remoteproc: qcom: enable in-kernel PD mapper
  dt-bindings: remoteproc: imx_rproc: Add minItems for power-domain
  remoteproc: imx_rproc: Fix refcount mistake in imx_rproc_addr_init
  remoteproc: omap: Use devm_rproc_add() helper
  remoteproc: omap: Use devm action to release reserved memory
  remoteproc: omap: Use devm_rproc_alloc() helper
  remoteproc: imx_rproc: Skip over memory region when node value is NULL
  dt-bindings: remoteproc: k3-dsp: Correct optional sram properties for AM62A SoCs
  remoteproc: qcom_q6v5_pas: Add hwspinlock bust on stop
  soc: qcom: smem: Add qcom_smem_bust_hwspin_lock_by_host()
  remoteproc: mediatek: Zero out only remaining bytes of IPI buffer

Pull hwspinlock updates from Bjorn Andersson:
 "This introduces a mechanism in the hardware spinlock framework, and
  the Qualcomm TCSR mutex driver, for allowing clients to bust locks
  held by a remote processor in the event that this enters a faulty
  state while holding the shared lock"

* tag 'hwlock-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
  hwspinlock: qcom: implement bust operation
  hwspinlock: Introduce hwspin_lock_bust()