linux-toradex.git/rust/kernel/sync, branch master Linux kernel for Apalis and Colibri modules Merge tag 'rust-fixes-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux 2026-10-29T19:40:12+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-10-29T19:40:12+00:00 fb7bd3a2aad70a76232a7168a505386d0a1396af Pull Rust fixes from Miguel Ojeda: "Toolchain and infrastructure: - Fix 'objtool' warnings for the upcoming Rust 1.101.0 (expected 2026-12-24) by adding one more 'noreturn' function 'kernel' crate: - Fix KCFI failures on every call from C to Rust IRQ handlers and 'hrtimer' callbacks by giving the C enum bindings the correct 'cfi_encoding'. Also prevent the same issue for DMA callbacks taking 'dma_data_direction' - 'workqueue' module: fix a runtime warning when queueing work on the deprecated 'system_wq' by switching to 'system_{percpu,dfl}_wq'" * tag 'rust-fixes-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: rust: dma: declare cfi_encoding for dma_data_direction rust: hrtimer: declare cfi_encoding for hrtimer_restart rust: irq: declare cfi_encoding for irqreturn objtool/rust: add one more `noreturn` Rust function for Rust 1.101.0 rust: workqueue: replace deprecated system_wq with system_{percpu,dfl}_wq 
Pull Rust fixes from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Fix 'objtool' warnings for the upcoming Rust 1.101.0 (expected
     2026-12-24) by adding one more 'noreturn' function

  'kernel' crate:

   - Fix KCFI failures on every call from C to Rust IRQ handlers and
     'hrtimer' callbacks by giving the C enum bindings the correct
     'cfi_encoding'. Also prevent the same issue for DMA callbacks
     taking 'dma_data_direction'

   - 'workqueue' module: fix a runtime warning when queueing work on the
     deprecated 'system_wq' by switching to 'system_{percpu,dfl}_wq'"

* tag 'rust-fixes-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
  rust: dma: declare cfi_encoding for dma_data_direction
  rust: hrtimer: declare cfi_encoding for hrtimer_restart
  rust: irq: declare cfi_encoding for irqreturn
  objtool/rust: add one more `noreturn` Rust function for Rust 1.101.0
  rust: workqueue: replace deprecated system_wq with system_{percpu,dfl}_wq
Merge tag 'driver-core-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core 2026-10-22T04:53:14+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-10-22T04:53:14+00:00 7be4bc52fd9e0e55dc9a2e0232b89427d2c4b614 Pull driver core updates from Danilo Krummrich: "Core: - Add TAINT_FORCED_BIND to taint the kernel and driver module before manual sysfs bind/unbind operations; make add_taint_module() available to driver core and update taint decoding tools and documentation - Constify device_show/store_*() attribute parameters and adapt x86 MCE and perf users to prepare for const dev_ext_attribute instances - Fix UAF in NUMA access node registration failure handling by dropping the device reference with put_device() instead of directly freeing the node debugfs: - Make debugfs_create_str() read-only to eliminate double-free races between concurrent writers; reject writable modes; convert interconnect and SoundWire users to local file operations with mutex-protected strings kobject: - Fix out-of-bounds access in kobject_action_type() when parsing action strings containing embedded NUL bytes - Fix the kobject_set_name() reference in kset_register() kernel-doc Rust: - DMA: - Tie Coherent, CoherentBox and CoherentHandle to the device's bound lifetime to prevent retaining DMA allocations beyond driver unbind; propagate the lifetime through nova-core and the DMA sample driver - I/O: - Require explicit base types for registers and replace relative registers with typed subregion projections; reimplement register!() as a proc macro, support registers using existing types without inline bitfields, and convert nova-core, Tyr and the PCI sample; add AsRepr/AsReprMut and transmute helpers with deferred size checks for representation conversions - Wrap ResourceSize in a transparent newtype with explicit conversions, including checked conversion to usize - PCI: - Add typed PCIe extended capability lookup and SR-IOV accessors for the First VF Offset and decoded VF BAR addresses and widths, keeping raw SR-IOV registers private to preserve PCI core ownership of their state - scatterlist: - Honor the device's maximum segment size as well as the DMA mapping limit when constructing SG tables - Return u32 from SGEntry::dma_len() to match the C segment length type - misc: - Validate auxiliary DeviceId name length explicitly to improve compile-time diagnostics for oversized device ID table entries - Drop unnecessary 'static bounds from debugfs ScopedDir file creation methods to support data containing non-'static references, including DMA buffers Misc: - Add Johan Hovold as driver core maintainer - Simplify platform_device_alloc() by returning early on allocation failure - Fix typos in driver core and kernfs comments" * tag 'driver-core-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (41 commits) rust: pci: add extended capability and SR-IOV support kobject: Fix the kobj_set_name reference in kset_register() kernel-doc rust: io: convert ResourceSize into a transparent newtype rust: scatterlist: return u32 from SGEntry::dma_len() MAINTAINERS: add myself as driver core maintainer debugfs: make debugfs_create_str() read-only soundwire: debugfs: replace writable string helper interconnect: debugfs: replace writable string helper docs: admin-guide: Handle TAINT_FORCED_BIND when parsing /proc/sys/kernel/tainted driver core: platform: Simplify platform_device_alloc() kobject: fix out-of-bounds access in kobject_action_type() rust: scatterlist: honor the device's maximum segment size driver core: add TAINT_FORCED_BIND for when userspace manually messes with devices and drivers module: fix up documentation for add_taint() and add_taint_module() module: pull out add_taint_module() to be public driver core: Constify the signature of device_show/store_*() drivers: perf: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute x86/mce: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute rust: auxiliary: validate DeviceId name length driver core: fix typos in comments ... 
Pull driver core updates from Danilo Krummrich:
 "Core:

   - Add TAINT_FORCED_BIND to taint the kernel and driver module before
     manual sysfs bind/unbind operations; make add_taint_module()
     available to driver core and update taint decoding tools and
     documentation

   - Constify device_show/store_*() attribute parameters and adapt x86
     MCE and perf users to prepare for const dev_ext_attribute instances

   - Fix UAF in NUMA access node registration failure handling by
     dropping the device reference with put_device() instead of directly
     freeing the node

  debugfs:

   - Make debugfs_create_str() read-only to eliminate double-free races
     between concurrent writers; reject writable modes; convert
     interconnect and SoundWire users to local file operations with
     mutex-protected strings

  kobject:

   - Fix out-of-bounds access in kobject_action_type() when parsing
     action strings containing embedded NUL bytes

   - Fix the kobject_set_name() reference in kset_register() kernel-doc

  Rust:

   - DMA:

      - Tie Coherent, CoherentBox and CoherentHandle to the device's
        bound lifetime to prevent retaining DMA allocations beyond
        driver unbind; propagate the lifetime through nova-core and the
        DMA sample driver

   - I/O:

      - Require explicit base types for registers and replace relative
        registers with typed subregion projections; reimplement
        register!() as a proc macro, support registers using existing
        types without inline bitfields, and convert nova-core, Tyr and
        the PCI sample; add AsRepr/AsReprMut and transmute helpers with
        deferred size checks for representation conversions

      - Wrap ResourceSize in a transparent newtype with explicit
        conversions, including checked conversion to usize

   - PCI:

      - Add typed PCIe extended capability lookup and SR-IOV accessors
        for the First VF Offset and decoded VF BAR addresses and widths,
        keeping raw SR-IOV registers private to preserve PCI core
        ownership of their state

   - scatterlist:

      - Honor the device's maximum segment size as well as the DMA
        mapping limit when constructing SG tables

      - Return u32 from SGEntry::dma_len() to match the C segment length
        type

   - misc:

      - Validate auxiliary DeviceId name length explicitly to improve
        compile-time diagnostics for oversized device ID table entries

      - Drop unnecessary 'static bounds from debugfs ScopedDir file
        creation methods to support data containing non-'static
        references, including DMA buffers

  Misc:

   - Add Johan Hovold as driver core maintainer

   - Simplify platform_device_alloc() by returning early on allocation
     failure

   - Fix typos in driver core and kernfs comments"

* tag 'driver-core-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (41 commits)
  rust: pci: add extended capability and SR-IOV support
  kobject: Fix the kobj_set_name reference in kset_register() kernel-doc
  rust: io: convert ResourceSize into a transparent newtype
  rust: scatterlist: return u32 from SGEntry::dma_len()
  MAINTAINERS: add myself as driver core maintainer
  debugfs: make debugfs_create_str() read-only
  soundwire: debugfs: replace writable string helper
  interconnect: debugfs: replace writable string helper
  docs: admin-guide: Handle TAINT_FORCED_BIND when parsing /proc/sys/kernel/tainted
  driver core: platform: Simplify platform_device_alloc()
  kobject: fix out-of-bounds access in kobject_action_type()
  rust: scatterlist: honor the device's maximum segment size
  driver core: add TAINT_FORCED_BIND for when userspace manually messes with devices and drivers
  module: fix up documentation for add_taint() and add_taint_module()
  module: pull out add_taint_module() to be public
  driver core: Constify the signature of device_show/store_*()
  drivers: perf: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute
  x86/mce: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute
  rust: auxiliary: validate DeviceId name length
  driver core: fix typos in comments
  ...
rust: workqueue: replace deprecated system_wq with system_{percpu,dfl}_wq 2026-10-20T23:30:34+00:00 Danilo Krummrich dakr@kernel.org 2026-10-14T09:08:35+00:00 10ff62c6bb0baf9c2f77f92d2bcdaf6566c31191 system_wq is deprecated and triggers a runtime warning: [ 0.857414] workqueue: work func ...WorkItemPointerKy0_E3runB7_ enqueued on deprecated workqueue. Use system_{percpu|dfl}_wq instead. Replace system() with system_percpu() and system_dfl(), to match the previous behavior of the deprecated system() and convert doc examples and tests to system_dfl(). system_unbound_wq is deprecated in the same way, in favor of system_dfl_wq. Since system_unbound() has no users, just remove it as well. Fixes: 64d8eae3f895 ("workqueue: Add warnings and fallback if system_{unbound}_wq is used") Signed-off-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Boqun Feng <boqun@kernel.org> Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Gary Guo <gary@garyguo.net> Acked-by: Marco Crivellari <marco.crivellari@suse.com> Acked-by: Tejun Heo <tj@kernel.org> Link: https://patch.msgid.link/20261014-rust-workqueue-system-fix-v2-1-c018b8f870f9@google.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org> 
system_wq is deprecated and triggers a runtime warning:

	[    0.857414] workqueue: work func ...WorkItemPointerKy0_E3runB7_ enqueued on deprecated workqueue. Use system_{percpu|dfl}_wq instead.

Replace system() with system_percpu() and system_dfl(), to match the
previous behavior of the deprecated system() and convert doc examples
and tests to system_dfl().

system_unbound_wq is deprecated in the same way, in favor of
system_dfl_wq. Since system_unbound() has no users, just remove it as
well.

Fixes: 64d8eae3f895 ("workqueue: Add warnings and fallback if system_{unbound}_wq is used")
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Boqun Feng <boqun@kernel.org>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Acked-by: Marco Crivellari <marco.crivellari@suse.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://patch.msgid.link/20261014-rust-workqueue-system-fix-v2-1-c018b8f870f9@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
rust: add pr_*_ratelimited! macros for printing 2026-10-12T05:03:26+00:00 Alice Ryhl aliceryhl@google.com 2026-10-07T14:30:03+00:00 ecdfcc7f2974c368fb932b16dd3c2deb4a8cbdb0 Printing can be very expensive if it occurs often, so printing that can be triggered by userspace should be rate limited. For this purpose, add a Rust wrapper around `struct ratelimit_state` and use it in the new macros. The new files will fall under the catch-all RUST maintainers entry. Tested-by: Alvin Sun <alvin.sun@linux.dev> Reviewed-by: Carlos Llamas <cmllamas@google.com> Link: https://github.com/Rust-for-Linux/linux/issues/122 Acked-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20261007-pr-ratelimited-v6-3-f14accd4ea3b@google.com [ Removed unused link reference definitions. On the `static`, allowed the `non_upper_case_globals` lint so that `kernel` users (and users providing their own name) do not warn. Reworded title for typo. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> 
Printing can be very expensive if it occurs often, so printing that can
be triggered by userspace should be rate limited. For this purpose, add
a Rust wrapper around `struct ratelimit_state` and use it in the new
macros.

The new files will fall under the catch-all RUST maintainers entry.

Tested-by: Alvin Sun <alvin.sun@linux.dev>
Reviewed-by: Carlos Llamas <cmllamas@google.com>
Link: https://github.com/Rust-for-Linux/linux/issues/122
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20261007-pr-ratelimited-v6-3-f14accd4ea3b@google.com
[ Removed unused link reference definitions. On the `static`, allowed
  the `non_upper_case_globals` lint so that `kernel` users (and users
  providing their own name) do not warn. Reworded title for typo.
    - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
rust: sync: add const constructor for raw_spinlock_t 2026-10-12T05:03:26+00:00 Alice Ryhl aliceryhl@google.com 2026-10-07T14:30:02+00:00 107a25d62c40ef47b2284ee37fdefc1d3f5d013b The abstractions for pr_*_ratelimited! need to construct a global `struct ratelimit_state`, which contains a `raw_spinlock_t` field. Thus, add a const constructor for the `raw_spinlock_t` type. The SPINLOCK_OWNER_INIT constant isn't mirrored via a const helper because bindgen generates a 'static mut' instead of a constant from the pointer constant., The __ARCH_SPIN_LOCK_UNLOCKED constant cannot be translated by bindgen because it's a define for a struct without type annotations, so it's explicitly declared in Rust. Reviewed-by: Boqun Feng <boqun@kernel.org> Reviewed-by: Carlos Llamas <cmllamas@google.com> Acked-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20261007-pr-ratelimited-v6-2-f14accd4ea3b@google.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org> 
The abstractions for pr_*_ratelimited! need to construct a global
`struct ratelimit_state`, which contains a `raw_spinlock_t` field. Thus,
add a const constructor for the `raw_spinlock_t` type.

The SPINLOCK_OWNER_INIT constant isn't mirrored via a const helper
because bindgen generates a 'static mut' instead of a constant from the
pointer constant.,

The __ARCH_SPIN_LOCK_UNLOCKED constant cannot be translated by bindgen
because it's a define for a struct without type annotations, so it's
explicitly declared in Rust.

Reviewed-by: Boqun Feng <boqun@kernel.org>
Reviewed-by: Carlos Llamas <cmllamas@google.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20261007-pr-ratelimited-v6-2-f14accd4ea3b@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
rust: sync: move lockdep types to rust/kernel/sync/lockdep.rs 2026-10-12T05:02:12+00:00 Alice Ryhl aliceryhl@google.com 2026-10-07T14:30:01+00:00 3a4e0ee57c5563aa997ea6d6b887a915e035e8e0 The lockdep types are currently stored directly in rust/kernel/sync.rs, but there are starting to be too many of them to keep them in that file. Thus, move them to a submodule. The new module is listed under LOCKING PRIMITIVES in the MAINTAINERS file. For commonly used lockdep logic it's useful to keep re-exports in kernel::sync, and this also avoids the need to update any users. Reviewed-by: Gary Guo <gary@garyguo.net> Reviewed-by: Boqun Feng <boqun@kernel.org> Reviewed-by: Carlos Llamas <cmllamas@google.com> Acked-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20261007-pr-ratelimited-v6-1-f14accd4ea3b@google.com [ Used the "kernel vertical" imports style. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> 
The lockdep types are currently stored directly in rust/kernel/sync.rs,
but there are starting to be too many of them to keep them in that file.
Thus, move them to a submodule. The new module is listed under LOCKING
PRIMITIVES in the MAINTAINERS file.

For commonly used lockdep logic it's useful to keep re-exports in
kernel::sync, and this also avoids the need to update any users.

Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun@kernel.org>
Reviewed-by: Carlos Llamas <cmllamas@google.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20261007-pr-ratelimited-v6-1-f14accd4ea3b@google.com
[ Used the "kernel vertical" imports style. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
rust: mem: add `transmute` with deferred size check 2026-09-06T11:39:26+00:00 Gary Guo gary@garyguo.net 2026-09-01T16:50:26+00:00 1fc1f82756b1ff872c04950747925f7dcf5c1d8a Implement a `transmute/safe_transmute` that checks size at monomorphization time instead of type-checking time. This allows more cases where we know that the size matches but this is not generically checkable. The signature is equivalent to the unstable `transmute_neo` function in the standard library. A safe variant is provided to use with types implementing `FromBytes` and `IntoBytes`. Existing users of `transmute_copy` to bypass size checks are converted. Signed-off-by: Gary Guo <gary@garyguo.net> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Acked-by: Miguel Ojeda <ojeda@kernel.org> Link: https://patch.msgid.link/20260901-typed_register-v4-2-5552b1d59525@garyguo.net [ Fix doc heading to use plural "Examples", add missing closing code block delimiter and fix a few other nits. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> 
Implement a `transmute/safe_transmute` that checks size at
monomorphization time instead of type-checking time. This allows more cases
where we know that the size matches but this is not generically checkable.

The signature is equivalent to the unstable `transmute_neo` function in the
standard library. A safe variant is provided to use with types implementing
`FromBytes` and `IntoBytes`.

Existing users of `transmute_copy` to bypass size checks are converted.

Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://patch.msgid.link/20260901-typed_register-v4-2-5552b1d59525@garyguo.net
[ Fix doc heading to use plural "Examples", add missing closing code
  block delimiter and fix a few other nits. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Merge tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc 2026-08-25T16:38:50+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-08-25T16:38:50+00:00 93e4b3076b5f2d853462b9777d083c77fc0b7b23 Pull char/misc/IIO/etc driver updates from Greg KH: "Here is the big set of char, misc, iio, counter, fpga, and other small driver subsystems for 7.3-rc1. Overall, due to some driver removals we only added a bit more code than removed, which was a nice change. Highlights in this merge request are: - Loads of IIO driver updates and additions - binder driver updates (more on that below...) - Removal of the SGI XP and GRU drivers as they are not used anymore and turn out to be pretty insecure overall - Removal of the obsolete ibmasm driver as it's not being used anymore - Coresight driver updates and additions - Mei driver udpates - Counter driver updates - FPGA driver updates - ICC driver updates - lots and lots of other tiny driver updates to resolve reported issues All of these have been in linux-next for a while" * tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (513 commits) iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF iio: adc: pac1921: fix wrong channel used in trigger handler read iio: light: gp2ap002: re-enable irq if runtime suspend fails iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes iio: light: apds9306: fix PM reference leak in apds9306_read_data() iio: gyro: mpu3050: fix sign of raw angular velocity readings iio: srf04: fix pm_runtime handling on probe error path iio: adc: ad4080: configure backend data size iio: adc: adi-axi-adc: add data size support for AD408X backend iio: chemical: atlas-sensor: fix PM reference leak in buffer postenable iio: dac: ad5446: fix OF module device table iio: light: opt4001: Fix reversed GENMASK() arguments in fault count mask iio: light: opt4001: Reject integration times with a non-zero seconds part iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem() iio: light: opt4001: Fix power down clearing bits of the wrong register iio: light: opt4060: Fix incorrect register name in threshold read error message iio: light: opt4060: Fix pointer type passed to div_u64_rem() iio: light: opt4060: Reject integration times with a non-zero seconds part iio: light: ltrf216a: fix runtime PM reference leak in error path iio: pressure: dps310: fix NULL pointer dereference on ACPI probe ... 
Pull char/misc/IIO/etc driver updates from Greg KH:
 "Here is the big set of char, misc, iio, counter, fpga, and other small
  driver subsystems for 7.3-rc1.

  Overall, due to some driver removals we only added a bit more code
  than removed, which was a nice change. Highlights in this merge
  request are:

   - Loads of IIO driver updates and additions

   - binder driver updates (more on that below...)

   - Removal of the SGI XP and GRU drivers as they are not used anymore
     and turn out to be pretty insecure overall

   - Removal of the obsolete ibmasm driver as it's not being used
     anymore

   - Coresight driver updates and additions

   - Mei driver udpates

   - Counter driver updates

   - FPGA driver updates

   - ICC driver updates

   - lots and lots of other tiny driver updates to resolve reported
     issues

  All of these have been in linux-next for a while"

* tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (513 commits)
  iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF
  iio: adc: pac1921: fix wrong channel used in trigger handler read
  iio: light: gp2ap002: re-enable irq if runtime suspend fails
  iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
  iio: light: apds9306: fix PM reference leak in apds9306_read_data()
  iio: gyro: mpu3050: fix sign of raw angular velocity readings
  iio: srf04: fix pm_runtime handling on probe error path
  iio: adc: ad4080: configure backend data size
  iio: adc: adi-axi-adc: add data size support for AD408X backend
  iio: chemical: atlas-sensor: fix PM reference leak in buffer postenable
  iio: dac: ad5446: fix OF module device table
  iio: light: opt4001: Fix reversed GENMASK() arguments in fault count mask
  iio: light: opt4001: Reject integration times with a non-zero seconds part
  iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem()
  iio: light: opt4001: Fix power down clearing bits of the wrong register
  iio: light: opt4060: Fix incorrect register name in threshold read error message
  iio: light: opt4060: Fix pointer type passed to div_u64_rem()
  iio: light: opt4060: Reject integration times with a non-zero seconds part
  iio: light: ltrf216a: fix runtime PM reference leak in error path
  iio: pressure: dps310: fix NULL pointer dereference on ACPI probe
  ...
Merge tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux 2026-08-24T01:00:22+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-08-24T01:00:22+00:00 83684c4e4d62cb02b2e4d0d18963d1035439278e Pull RCU updates from Paul McKenney: "Make expedited grace periods expedite normal RCU callbacks Miscellaneous fixes: - Improve diagnostic output with character task states - Mark accesses to inform KCSAN of concurrency design - Move from kmalloc() to kmalloc_obj() - Documentation updates - Improve handling of RCU deferred quiescent states - Clean up unused function arguments and structure fields - Reduce show_rcu_gp_kthreads() stack space Tasks RCU updates: - Clean up after SRCU re-implementation of Tasks Trace RCU - Mark accesses to inform KCSAN of concurrency design - Add ->lazy_timer status to diagnostic output - Remove an unnecessary memory barrier - Fix a data race, courtesy of KCSAN - Documentation updates - Convert cond_resched_tasks_rcu_qs() from macro to static inline function SRCU updates: - Add Rust helpers for SRCU - Avoid losing queued work at cleanup_srcu_struct() time Torture-test updates: - Preparation work for immediate RCU priority deboosting - Test RCU readers from real interrupt handlers (as opposed to softirq) - Simplify code through use of cpumask_next_wrap() - Improve diagnostic output with character task states - Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier - Test an RCU Tasks Trace grace period implying an RCU grace period - Make RCU Tasks Trace torturing track reader batches - Fix a data race, courtesy of KCSAN - Plug a shuffle_tmp_mask memory leak on kthread spawn failure" * tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits) rcu: Add closing parenthesis in comment in rcu_read_unlock_strict() rcutorture: Make {,s}rcu_read_delay() better handle forward-progress testing rcutorture: Announce declining to forward-progress test torture: Don't leak shuffle_tmp_mask when shuffler kthread fails to start rcutorture: Use this_cpu_inc() for rcu_torture_count[] and rcu_torture_batch[] rcutorture: Make RCU Tasks Trace track Reader Batches rcutorture: Test RCU Tasks Trace GP implying RCU GP rcutorture: Add a stall_only module parameter rcutorture: Add nwriters module parameter rcutorture: Use task_state_to_char() for task-state reporting rcutorture: Use cpumask_next_wrap() in rcu_torture_preempt() rcutorture: Test RCU readers from hardware interrupt handlers rcutorture: Check for immediate deboosting at reader end srcu: Queue sdp->work when the delay timer is successfully deleted rcu-tasks: Convert cond_resched_tasks_rcu_qs() to static inline rcu-tasks: Fix some comments for call_rcu_tasks() and call_rcu_tasks_rude() rcu-tasks: Rename tasks_rcu_exit_srcu_stall_timer to tasks_rcu_exit_stall_timer rcu: Mark interrupts-enabled accesses to rdp->cpu_no_qs.s rcu: Reduce stack usage in show_rcu_gp_kthreads() rcu: Mark accesses to ->rcu_urgent_qs and ->rcu_need_heavy_qs ... 
Pull RCU updates from Paul McKenney:
 "Make expedited grace periods expedite normal RCU callbacks

  Miscellaneous fixes:
   - Improve diagnostic output with character task states
   - Mark accesses to inform KCSAN of concurrency design
   - Move from kmalloc() to kmalloc_obj()
   - Documentation updates
   - Improve handling of RCU deferred quiescent states
   - Clean up unused function arguments and structure fields
   - Reduce show_rcu_gp_kthreads() stack space

  Tasks RCU updates:
   - Clean up after SRCU re-implementation of Tasks Trace RCU
   - Mark accesses to inform KCSAN of concurrency design
   - Add ->lazy_timer status to diagnostic output
   - Remove an unnecessary memory barrier
   - Fix a data race, courtesy of KCSAN
   - Documentation updates
   - Convert cond_resched_tasks_rcu_qs() from macro to static inline
     function

  SRCU updates:
   - Add Rust helpers for SRCU
   - Avoid losing queued work at cleanup_srcu_struct() time

  Torture-test updates:
   - Preparation work for immediate RCU priority deboosting
   - Test RCU readers from real interrupt handlers (as opposed to
     softirq)
   - Simplify code through use of cpumask_next_wrap()
   - Improve diagnostic output with character task states
   - Add rcutorture.nwriters parameter to allow lightweight stall
     testing, and rcutorture.stall_only to make doing so easier
   - Test an RCU Tasks Trace grace period implying an RCU grace period
   - Make RCU Tasks Trace torturing track reader batches
   - Fix a data race, courtesy of KCSAN
   - Plug a shuffle_tmp_mask memory leak on kthread spawn failure"

* tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits)
  rcu: Add closing parenthesis in comment in rcu_read_unlock_strict()
  rcutorture: Make {,s}rcu_read_delay() better handle forward-progress testing
  rcutorture: Announce declining to forward-progress test
  torture: Don't leak shuffle_tmp_mask when shuffler kthread fails to start
  rcutorture: Use this_cpu_inc() for rcu_torture_count[] and rcu_torture_batch[]
  rcutorture: Make RCU Tasks Trace track Reader Batches
  rcutorture: Test RCU Tasks Trace GP implying RCU GP
  rcutorture: Add a stall_only module parameter
  rcutorture: Add nwriters module parameter
  rcutorture: Use task_state_to_char() for task-state reporting
  rcutorture: Use cpumask_next_wrap() in rcu_torture_preempt()
  rcutorture: Test RCU readers from hardware interrupt handlers
  rcutorture: Check for immediate deboosting at reader end
  srcu: Queue sdp->work when the delay timer is successfully deleted
  rcu-tasks: Convert cond_resched_tasks_rcu_qs() to static inline
  rcu-tasks: Fix some comments for call_rcu_tasks() and call_rcu_tasks_rude()
  rcu-tasks: Rename tasks_rcu_exit_srcu_stall_timer to tasks_rcu_exit_stall_timer
  rcu: Mark interrupts-enabled accesses to rdp->cpu_no_qs.s
  rcu: Reduce stack usage in show_rcu_gp_kthreads()
  rcu: Mark accesses to ->rcu_urgent_qs and ->rcu_need_heavy_qs
  ...
Merge tag 'locking-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2026-08-18T20:07:17+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-08-18T20:07:17+00:00 dfa35434d7f20142fedd7120277b1044a0a2bb64 Pull locking updates from Ingo Molnar: "Futexes: - Use runtime constants for futex_hash computation (K Prateek Nayak, Peter Zijlstra) - Optimise the size check get_futex_key() (Sebastian Andrzej Siewior) - Avoid private hash use-after-free on final put (Felix Hoffmann) - Tell kmemleak we're not leaking __futex_queues (Peter Zijlstra) Rust integration updates: - Implement refcounted interrupt disable and SpinLockIrq for Rust (Boqun Feng, Heiko Carstens, Joel Fernandes, Lyude Paul) - Rust sync: add helpers for mb, dma_mb and friends; add generic memory barriers and use LKMM atomics instead of Rust atomics in the revocable code (Gary Guo) - Add abstraction and integrate synchronize_rcu() (Philipp Stanner) Lock debugging: - Add qspinlock contended_release tracepoint (Dmitry Ilvokhin, Peter Zijlstra) - Enable the printing of held locks of remote running tasks and print task CPU (Ingo Molnar) - percpu-rwsem: Annotate intentional data race in readers_active_check() (Sun Shaojie) Misc fixes and updates by Boqun Feng, Peter Zijlstra, Fangrui Song, Naveen Kumar Chaudhary and Thomas Huth" * tag 'locking-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits) rust: sync: Introduce SpinLockIrq::lock_with() and friends rust: sync: Add SpinLockIrq rust: sync: Use super::* in spinlock.rs rust: helper: Add spin_{un,}lock_irq_{enable,disable}() helpers rust: Introduce interrupt module s390/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS arm64: sched/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS preempt: Introduce HAS_SEPARATE_PREEMPT_RESCHED_BITS sched: Avoid signed comparison of preempt_count() in __cant_migrate() sched: Remove the unused preempt_offset parameter of __cant_sleep() locking: Switch to _irq_{disable,enable}() variants in cleanup guards irq: Add KUnit test for refcounted interrupt enable/disable irq,spin_lock: Add counted interrupt disabling/enabling openrisc: Include <linux/cpumask.h> in smp.h preempt: Introduce __preempt_count_{sub,add}_return() preempt: Introduce HARDIRQ_DISABLE_BITS preempt: Track NMI nesting to separate per-CPU counter futex: Tell kmemleak we're not leaking __futex_queues x86/paravirt: Trace contended_release on unlock tracing/lock: Use TRACE_EVENT_FN() for contended_release ... 
Pull locking updates from Ingo Molnar:
 "Futexes:

   - Use runtime constants for futex_hash computation (K Prateek Nayak,
     Peter Zijlstra)

   - Optimise the size check get_futex_key() (Sebastian Andrzej Siewior)

   - Avoid private hash use-after-free on final put (Felix Hoffmann)

   - Tell kmemleak we're not leaking __futex_queues (Peter Zijlstra)

  Rust integration updates:

   - Implement refcounted interrupt disable and SpinLockIrq for Rust
     (Boqun Feng, Heiko Carstens, Joel Fernandes, Lyude Paul)

   - Rust sync: add helpers for mb, dma_mb and friends; add generic
     memory barriers and use LKMM atomics instead of Rust atomics in the
     revocable code (Gary Guo)

   - Add abstraction and integrate synchronize_rcu() (Philipp Stanner)

  Lock debugging:

   - Add qspinlock contended_release tracepoint (Dmitry Ilvokhin, Peter
     Zijlstra)

   - Enable the printing of held locks of remote running tasks and print
     task CPU (Ingo Molnar)

   - percpu-rwsem: Annotate intentional data race in readers_active_check()
     (Sun Shaojie)

  Misc fixes and updates by Boqun Feng, Peter Zijlstra, Fangrui Song,
  Naveen Kumar Chaudhary and Thomas Huth"

* tag 'locking-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
  rust: sync: Introduce SpinLockIrq::lock_with() and friends
  rust: sync: Add SpinLockIrq
  rust: sync: Use super::* in spinlock.rs
  rust: helper: Add spin_{un,}lock_irq_{enable,disable}() helpers
  rust: Introduce interrupt module
  s390/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
  arm64: sched/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
  preempt: Introduce HAS_SEPARATE_PREEMPT_RESCHED_BITS
  sched: Avoid signed comparison of preempt_count() in __cant_migrate()
  sched: Remove the unused preempt_offset parameter of __cant_sleep()
  locking: Switch to _irq_{disable,enable}() variants in cleanup guards
  irq: Add KUnit test for refcounted interrupt enable/disable
  irq,spin_lock: Add counted interrupt disabling/enabling
  openrisc: Include <linux/cpumask.h> in smp.h
  preempt: Introduce __preempt_count_{sub,add}_return()
  preempt: Introduce HARDIRQ_DISABLE_BITS
  preempt: Track NMI nesting to separate per-CPU counter
  futex: Tell kmemleak we're not leaking __futex_queues
  x86/paravirt: Trace contended_release on unlock
  tracing/lock: Use TRACE_EVENT_FN() for contended_release
  ...