]> git.ipfire.org Git - thirdparty/kernel/linux.git/log
thirdparty/kernel/linux.git
2 weeks agorust: macros: use `quote!` for `module!` macro
Gary Guo [Mon, 12 Jan 2026 17:07:16 +0000 (17:07 +0000)] 
rust: macros: use `quote!` for `module!` macro

This has no behavioural change, but is good for maintainability. With
`quote!`, we're no longer using string templates, so we don't need to
quote " and {} inside the template anymore. Further more, editors can
now highlight the code template.

This also improves the robustness as it eliminates the need for string
quoting and escaping.

Co-developed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260112170919.1888584-6-gary@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2 weeks agorust: macros: use `syn` to parse `module!` macro
Gary Guo [Mon, 12 Jan 2026 17:07:15 +0000 (17:07 +0000)] 
rust: macros: use `syn` to parse `module!` macro

With `syn` being available in the kernel, use it to parse the complex
custom `module!` macro to replace existing helpers. Only parsing is
changed in this commit, the code generation is untouched.

This has the benefit of better error message when the macro is used
incorrectly, as it can point to a concrete span on what's going wrong.

For example, if a field is specified twice, previously it reads:

    error: proc macro panicked
      --> samples/rust/rust_minimal.rs:7:1
       |
    7  | / module! {
    8  | |     type: RustMinimal,
    9  | |     name: "rust_minimal",
    10 | |     author: "Rust for Linux Contributors",
    11 | |     description: "Rust minimal sample",
    12 | |     license: "GPL",
    13 | |     license: "GPL",
    14 | | }
       | |_^
       |
       = help: message: Duplicated key "license". Keys can only be specified once.

now it reads:

    error: duplicated key "license". Keys can only be specified once.
      --> samples/rust/rust_minimal.rs:13:5
       |
    13 |     license: "GPL",
       |     ^^^^^^^

Reviewed-by: Tamir Duberstein <tamird@gmail.com>
Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Link: https://patch.msgid.link/20260112170919.1888584-5-gary@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2 weeks agorust: macros: convert `#[vtable]` macro to use `syn`
Gary Guo [Mon, 12 Jan 2026 17:07:14 +0000 (17:07 +0000)] 
rust: macros: convert `#[vtable]` macro to use `syn`

`#[vtable]` is converted to use syn. This is more robust than the
previous heuristic-based searching of defined methods and functions.

When doing so, the trait and impl are split into two code paths as the
types are distinct when parsed by `syn`.

Reviewed-by: Tamir Duberstein <tamird@gmail.com>
Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Link: https://patch.msgid.link/20260112170919.1888584-4-gary@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2 weeks agorust: macros: use `quote!` from vendored crate
Gary Guo [Mon, 12 Jan 2026 17:07:13 +0000 (17:07 +0000)] 
rust: macros: use `quote!` from vendored crate

With `quote` crate now vendored in the kernel, we can remove our custom
`quote!` macro implementation and just rely on that crate instead.

The `quote` crate uses types from the `proc-macro2` library so we also
update to use that, and perform conversion in the top-level lib.rs.

Clippy complains about unnecessary `.to_string()` as `proc-macro2`
provides additional `PartialEq` impl, so they are removed.

Reviewed-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Gary Guo <gary@garyguo.net>
Acked-by: David Gow <davidgow@google.com> # for kunit
Link: https://patch.msgid.link/20260112170919.1888584-3-gary@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2 weeks agoMerge tag 'pin-init-v7.0' of https://github.com/Rust-for-Linux/linux into rust-next
Miguel Ojeda [Tue, 27 Jan 2026 13:33:55 +0000 (14:33 +0100)] 
Merge tag 'pin-init-v7.0' of https://github.com/Rust-for-Linux/linux into rust-next

Pull pin-init updates from Benno Lossin:
 "Added:

   - Implement 'InPlaceWrite' for '&'static mut MaybeUninit<T>'. This
     enables users to use external allocation mechanisms such as
     'static_cell'.

   - Add Gary Guo as a Maintainer.

  Changed:

   - Rewrote all proc-macros ('[pin_]init!', '#[pin_data]',
     '#[pinned_drop]', 'derive([Maybe]Zeroable)'), using 'syn' with
     better diagnostics.

   - Support tuple structs in 'derive([Maybe]Zeroable)'.

   - Support attributes on fields in '[pin_]init!' (such as
     '#[cfg(...)]').

   - Add a '#[default_error(<type>)]' attribute to '[pin_]init!' to
     override the default error (when no '? Error' is specified).

   - Support packed structs in '[pin_]init!' with
     '#[disable_initialized_field_access]'.

  Removed:

   - Remove 'try_[pin_]init!' in favor of merging their feature
     with '[pin_]init!'. Update the kernel's own 'try_[pin_]init!'
     macros to use the 'default_error' attribute.

  Fixed:

   - Correct 'T: Sized' bounds to 'T: ?Sized' in the generated
     'PinnedDrop' check by '#[pin_data]'."

* tag 'pin-init-v7.0' of https://github.com/Rust-for-Linux/linux:
  rust: pin-init: Implement `InPlaceWrite<T>` for `&'static mut MaybeUninit<T>`
  MAINTAINERS: add Gary Guo to pin-init
  rust: pin-init: internal: init: simplify Zeroable safety check
  rust: pin-init: internal: init: add escape hatch for referencing initialized fields
  rust: pin-init: internal: init: add support for attributes on initializer fields
  rust: init: use `#[default_error(err)]` for the initializer macros
  rust: pin-init: add `#[default_error(<type>)]` attribute to initializer macros
  rust: pin-init: rewrite the initializer macros using `syn`
  rust: pin-init: add `?Sized` bounds to traits in `#[pin_data]` macro
  rust: pin-init: rewrite `#[pin_data]` using `syn`
  rust: pin-init: rewrite the `#[pinned_drop]` attribute macro using `syn`
  rust: pin-init: rewrite `derive(Zeroable)` and `derive(MaybeZeroable)` using `syn`
  rust: pin-init: internal: add utility API for syn error handling
  rust: pin-init: add `syn` dependency and remove `proc-macro[2]` and `quote` workarounds
  rust: pin-init: allow the crate to refer to itself as `pin-init` in doc tests
  rust: pin-init: remove `try_` versions of the initializer macros

2 weeks agoMerge tag 'rust-xarray-for-v6.20-v7.0' of https://github.com/Rust-for-Linux/linux...
Miguel Ojeda [Tue, 27 Jan 2026 11:30:33 +0000 (12:30 +0100)] 
Merge tag 'rust-xarray-for-v6.20-v7.0' of https://github.com/Rust-for-Linux/linux into rust-next

Pull XArray update from Andreas Hindborg:

 - Add '__rust_helper' to XArray abstraction C helpers.

* tag 'rust-xarray-for-v6.20-v7.0' of https://github.com/Rust-for-Linux/linux:
  rust: xarray: add __rust_helper to helpers

2 weeks agoMAINTAINERS: mailmap: update Tamir Duberstein's email address
Tamir Duberstein [Mon, 26 Jan 2026 14:46:53 +0000 (09:46 -0500)] 
MAINTAINERS: mailmap: update Tamir Duberstein's email address

Update Tamir Duberstein's email address to `@kernel.org`.

Signed-off-by: Tamir Duberstein <tamird@kernel.org>
Link: https://patch.msgid.link/20260126-tamird-kernel-org-v1-1-b390d329b0b9@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2 weeks agosamples: rust: remove imports available via prelude
Gary Guo [Fri, 23 Jan 2026 17:19:42 +0000 (17:19 +0000)] 
samples: rust: remove imports available via prelude

These imports are already in scope by importing `kernel::prelude::*` and
does not need to be imported separately.

Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20260123172007.136873-4-gary@garyguo.net
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: workqueue: add __rust_helper to helpers
Alice Ryhl [Mon, 5 Jan 2026 12:42:39 +0000 (12:42 +0000)] 
rust: workqueue: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-26-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: uaccess: add __rust_helper to helpers
Alice Ryhl [Mon, 5 Jan 2026 12:42:36 +0000 (12:42 +0000)] 
rust: uaccess: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-23-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: slab: add __rust_helper to helpers
Alice Ryhl [Mon, 5 Jan 2026 12:42:32 +0000 (12:42 +0000)] 
rust: slab: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-19-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: rbtree: add __rust_helper to helpers
Alice Ryhl [Mon, 5 Jan 2026 12:42:28 +0000 (12:42 +0000)] 
rust: rbtree: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-15-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: of: add __rust_helper to helpers
Alice Ryhl [Mon, 5 Jan 2026 12:42:25 +0000 (12:42 +0000)] 
rust: of: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-12-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: mm: add __rust_helper to helpers
Alice Ryhl [Mon, 5 Jan 2026 12:42:24 +0000 (12:42 +0000)] 
rust: mm: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-11-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: maple_tree: add __rust_helper to helpers
Alice Ryhl [Mon, 5 Jan 2026 12:42:23 +0000 (12:42 +0000)] 
rust: maple_tree: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Acked-by: Andrew Ballance <andrewjballance@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-10-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: err: add __rust_helper to helpers
Alice Ryhl [Mon, 5 Jan 2026 12:42:21 +0000 (12:42 +0000)] 
rust: err: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-8-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: bug: add __rust_helper to helpers
Alice Ryhl [Mon, 5 Jan 2026 12:42:16 +0000 (12:42 +0000)] 
rust: bug: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-3-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agogpu: nova-core: gsp: use () as message type for GspInitDone message
Alexandre Courbot [Mon, 15 Dec 2025 05:49:10 +0000 (14:49 +0900)] 
gpu: nova-core: gsp: use () as message type for GspInitDone message

`GspInitDone` has no payload whatsoever, so the unit type `()` is the
correct way to represent its message content. We can use it now that
`()` implements `FromBytes`.

Reviewed-by: Alistair Popple <apopple@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20251215-transmute_unit-v4-2-477d71ec7c23@nvidia.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: transmute: implement FromBytes and AsBytes for inhabited ZSTs
Alexandre Courbot [Mon, 15 Dec 2025 05:49:09 +0000 (14:49 +0900)] 
rust: transmute: implement FromBytes and AsBytes for inhabited ZSTs

This is useful when using types that may or may not be empty in generic
code relying on these traits. It is also safe because technically a
no-op.

Reviewed-by: Alistair Popple <apopple@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Link: https://patch.msgid.link/20251215-transmute_unit-v4-1-477d71ec7c23@nvidia.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agorust: use consistent backtick formatting for NULL in docs
Peter Novak [Sun, 30 Nov 2025 21:12:33 +0000 (22:12 +0100)] 
rust: use consistent backtick formatting for NULL in docs

Some doc comments use `NULL` while others use plain NULL.  Make it
consistent by adding backticks everywhere, matching the majority of
existing usage.

Signed-off-by: Peter Novak <seimun018r@gmail.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: David Gow <davidgow@google.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20251130211233.367946-1-seimun018r@gmail.com
[ Reworded slightly. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
3 weeks agoMAINTAINERS: add "RUST [RUST-ANALYZER]" entry
Miguel Ojeda [Thu, 15 Jan 2026 21:45:45 +0000 (22:45 +0100)] 
MAINTAINERS: add "RUST [RUST-ANALYZER]" entry

This entry will handle the support for `rust-analyzer`, which at the
moment is essentially about the `scripts/generate_rust_analyzer.py`
script.

It is one more subentry of the Rust subsystem. The new branch is
already part of linux-next and will be used to send PRs to be merged
into rust-next.

Tamir and Jesung will take care of it. They have both been active around
the `rust-analyzer` support for a while.

Acked-by: Tamir Duberstein <tamird@kernel.org>
Acked-by: Jesung Yang <y.j3ms.n@gmail.com>
Acked-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://patch.msgid.link/20260115214545.63262-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
4 weeks agorust: rbtree: reduce unsafe blocks on pointer derefs
Onur Özkan [Thu, 13 Nov 2025 14:45:47 +0000 (17:45 +0300)] 
rust: rbtree: reduce unsafe blocks on pointer derefs

Refactors parts of the get() and find_best_match()
traversal logic to minimize the scope of unsafe blocks
and avoid duplicating same safety comments.

One of the removed comments was also misleading:

    // SAFETY: `node` is a non-null node...
    Ordering::Equal => return Some(unsafe { &(*this).value }),

as `node` should have been `this`.

No functional changes intended; this is purely a safety
improvement that reduces the amount of unsafe blocks
while keeping all invariants intact.

[ Alice writes:

    "One consequence of creating a &_ to the bindings::rb_node struct means
    that we assert immutability for the entire struct and not just the
    rb_left/rb_right fields, but I have verified that this is ok."

      - Miguel ]

Signed-off-by: Onur Özkan <work@onurozkan.dev>
Reviewed-by: Charalampos Mitrodimas <charmitro@posteo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251113144547.502-1-work@onurozkan.dev
[ Reworded title and replaced `cursor_lower_bound()` with
  `find_best_match()` in message. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
4 weeks agorust: kunit: replace `kernel::c_str!` with C-Strings
Tamir Duberstein [Mon, 22 Dec 2025 12:28:27 +0000 (13:28 +0100)] 
rust: kunit: replace `kernel::c_str!` with C-Strings

C-String literals were added in Rust 1.77. Replace instances of
`kernel::c_str!` with C-String literals where possible.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: David Gow <davidgow@google.com>
Link: https://patch.msgid.link/20251222-cstr-kunit-v1-1-39d999672f35@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
4 weeks agosamples: rust: i2c: replace `kernel::c_str!` with C-Strings
Tamir Duberstein [Mon, 22 Dec 2025 12:14:33 +0000 (13:14 +0100)] 
samples: rust: i2c: replace `kernel::c_str!` with C-Strings

C-String literals were added in Rust 1.77. Replace instances of
`kernel::c_str!` with C-String literals where possible.

Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Acked-by: Igor Korotin <igor.korotin.linux@gmail.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Link: https://patch.msgid.link/20251222-cstr-i2c-v1-2-df1c258d4615@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
4 weeks agorust: i2c: replace `kernel::c_str!` with C-Strings
Tamir Duberstein [Mon, 22 Dec 2025 12:14:32 +0000 (13:14 +0100)] 
rust: i2c: replace `kernel::c_str!` with C-Strings

C-String literals were added in Rust 1.77. Replace instances of
`kernel::c_str!` with C-String literals where possible.

Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Acked-by: Igor Korotin <igor.korotin.linux@gmail.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Link: https://patch.msgid.link/20251222-cstr-i2c-v1-1-df1c258d4615@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
4 weeks agorust: ptr: replace unneeded use of `build_assert`
Alexandre Courbot [Tue, 16 Dec 2025 08:24:49 +0000 (17:24 +0900)] 
rust: ptr: replace unneeded use of `build_assert`

Since `ALIGN` is a const parameter, this assertion can be done in const
context using the `assert!` macro.

Suggested-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251216-ptr_assert-v1-1-d8b2d5c5741d@nvidia.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
4 weeks agorust: build_assert: add instructions for use with function arguments
Alexandre Courbot [Mon, 8 Dec 2025 02:46:59 +0000 (11:46 +0900)] 
rust: build_assert: add instructions for use with function arguments

`build_assert` relies on the compiler to optimize out its error path,
lest build fails with the dreaded error:

    ERROR: modpost: "rust_build_error" [path/to/module.ko] undefined!

It has been observed that very trivial code performing I/O accesses
(sometimes even using an immediate value) would seemingly randomly fail
with this error whenever `CLIPPY=1` was set. The same behavior was also
observed until different, very similar conditions [1][2].

The cause appears to be that the failing function is eventually using
`build_assert` with its argument, but is only annotated with
`#[inline]`. This gives the compiler freedom to not inline the function,
which it notably did when Clippy was active, triggering the error.

The fix is to annotate functions passing their argument to
`build_assert` with `#[inline(always)]`, telling the compiler to be as
aggressive as possible with their inlining. This is also the correct
behavior as inlining is mandatory for correct behavior in these cases.

Add a paragraph instructing to annotate such functions with
`#[inline(always)]` in `build_assert`'s documentation, and split its
example to illustrate.

Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://patch.msgid.link/20251208-io-build-assert-v3-1-98aded02c1ea@nvidia.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
4 weeks agorust: conclude the Rust experiment
Miguel Ojeda [Sat, 13 Dec 2025 00:00:42 +0000 (01:00 +0100)] 
rust: conclude the Rust experiment

The Rust support was merged in v6.1 into mainline in order to help
determine whether Rust as a language was suitable for the kernel,
i.e. worth the tradeoffs, technically, procedurally and socially.

At the 2025 Linux Kernel Maintainers Summit, the experiment has just
been deemed concluded [1].

Thus remove the section -- it was not fully true already anyway, since
there are already uses of Rust in production out there, some well-known
Linux distributions enable it and it is already in millions of devices
via Android.

Obviously, this does not mean that everything works for every kernel
configuration, architecture, toolchain etc., or that there won't be
new issues. There is still a ton of work to do in all areas, from the
kernel to upstream Rust, GCC and other projects. And, in fact, certain
combinations (such as the mixed GCC+LLVM builds and the upcoming GCC
support) are still quite experimental but getting there.

But the experiment is done, i.e. Rust is here to stay.

I hope this signals commitment from the kernel to companies and other
entities to invest more into it, e.g. into giving time to their kernel
developers to train themselves in Rust.

Thanks to the many kernel maintainers that gave the project their
support and patience throughout these years, and to the many other
developers, whether in the kernel or in other projects, that have
made this possible. I had a long list of 173 names in the credits of
the original pull that merged the support into the kernel [2], and now
such a list would be way longer, so I will not even try to compose one,
but again, thanks a lot, everybody.

Link: https://lwn.net/Articles/1050174/
Link: https://git.kernel.org/linus/8aebac82933f
Reviewed-by: Gary Guo <gary@garyguo.net>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Benno Lossin <lossin@kernel.org>
Acked-by: Andreas Hindborg <a.hindborg@kernel.org>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251213000042.23072-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
4 weeks agoLinux 6.19-rc6 v6.19-rc6
Linus Torvalds [Sun, 18 Jan 2026 23:42:45 +0000 (15:42 -0800)] 
Linux 6.19-rc6

4 weeks agoMerge tag 'landlock-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mic...
Linus Torvalds [Sun, 18 Jan 2026 23:15:47 +0000 (15:15 -0800)] 
Merge tag 'landlock-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux

Pull landlock fixes from Mickaël Salaün:
 "This fixes TCP handling, tests, documentation, non-audit elided code,
  and minor cosmetic changes"

* tag 'landlock-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
  landlock: Clarify documentation for the IOCTL access right
  selftests/landlock: Properly close a file descriptor
  landlock: Improve the comment for domain_is_scoped
  selftests/landlock: Use scoped_base_variants.h for ptrace_test
  selftests/landlock: Fix missing semicolon
  selftests/landlock: Fix typo in fs_test
  landlock: Optimize stack usage when !CONFIG_AUDIT
  landlock: Fix spelling
  landlock: Clean up hook_ptrace_access_check()
  landlock: Improve erratum documentation
  landlock: Remove useless include
  landlock: Fix wrong type usage
  selftests/landlock: NULL-terminate unix pathname addresses
  selftests/landlock: Remove invalid unix socket bind()
  selftests/landlock: Add missing connect(minimal AF_UNSPEC) test
  selftests/landlock: Fix TCP bind(AF_UNSPEC) test case
  landlock: Fix TCP handling of short AF_UNSPEC addresses
  landlock: Fix formatting

4 weeks agoMerge tag 'cgroup-for-6.19-rc5-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Jan 2026 22:30:27 +0000 (14:30 -0800)] 
Merge tag 'cgroup-for-6.19-rc5-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup fixes from Tejun Heo:

 - Add Chen Ridong as cpuset reviewer

 - Add SPDX license identifiers to cgroup files that were missing them

* tag 'cgroup-for-6.19-rc5-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  kernel: cgroup: Add LGPL-2.1 SPDX license ID to legacy_freezer.c
  kernel: cgroup: Add SPDX-License-Identifier lines
  MAINTAINERS: Add Chen Ridong as cpuset reviewer

4 weeks agoMerge tag 'ext4_for_linus-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Jan 2026 22:01:20 +0000 (14:01 -0800)] 
Merge tag 'ext4_for_linus-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:

 - Fix an inconsistency in structure size on 32-bit platforms caused by
   padding differences for the new EXT4_IOC_[GS]ET_TUNE_SB_PARAM ioctls

 - Fix a buffer leak on the error path when dropping the refcount an
   xattr value stored in an inode

 - Fix missing locking on the error path for the file defragmentation
   ioctl leading to a BUG

* tag 'ext4_for_linus-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref
  ext4: add missing down_write_data_sem in mext_move_extent().
  ext4: fix ext4_tune_sb_params padding

4 weeks agoMerge tag 'dmaengine-fix-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul...
Linus Torvalds [Sun, 18 Jan 2026 21:38:31 +0000 (13:38 -0800)] 
Merge tag 'dmaengine-fix-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine fixes from Vinod Koul:
 "A bunch of driver fixes for:

   - dma mask fix for mmp pdma driver

   - Xilinx regmap max register, uninitialized addr_width fix

   - device leak fix for bunch of drivers in the subsystem

   - stm32 dmamux, TI crossbar driver fixes for device & of node leak
     and route allocation cleanup

   - Tegra use afer free fix

   - Memory leak fix in Qualcomm gpi and omap-dma driver

   - compatible fix for apple driver"

* tag 'dmaengine-fix-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (25 commits)
  dmaengine: apple-admac: Add "apple,t8103-admac" compatible
  dmaengine: omap-dma: fix dma_pool resource leak in error paths
  dmaengine: qcom: gpi: Fix memory leak in gpi_peripheral_config()
  dmaengine: sh: rz-dmac: Fix rz_dmac_terminate_all()
  dmaengine: xilinx_dma: Fix uninitialized addr_width when "xlnx,addrwidth" property is missing
  dmaengine: tegra-adma: Fix use-after-free
  dmaengine: fsl-edma: Fix clk leak on alloc_chan_resources failure
  dmaengine: mmp_pdma: Fix race condition in mmp_pdma_residue()
  dmaengine: ti: k3-udma: fix device leak on udma lookup
  dmaengine: ti: dma-crossbar: clean up dra7x route allocation error paths
  dmaengine: ti: dma-crossbar: fix device leak on am335x route allocation
  dmaengine: ti: dma-crossbar: fix device leak on dra7x route allocation
  dmaengine: stm32: dmamux: clean up route allocation error labels
  dmaengine: stm32: dmamux: fix OF node leak on route allocation failure
  dmaengine: stm32: dmamux: fix device leak on route allocation
  dmaengine: sh: rz-dmac: fix device leak on probe failure
  dmaengine: lpc32xx-dmamux: fix device leak on route allocation
  dmaengine: lpc18xx-dmamux: fix device leak on route allocation
  dmaengine: idxd: fix device leaks on compat bind and unbind
  dmaengine: dw: dmamux: fix OF node leak on route allocation failure
  ...

4 weeks agoMerge tag 'phy-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Linus Torvalds [Sun, 18 Jan 2026 21:18:40 +0000 (13:18 -0800)] 
Merge tag 'phy-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy

Pull phy fixes from Vinod Koul:
 "A bunch of driver fixes:

   - Freescale typec orientation switch fix, clearing register fix,
     assertion of phy reset during power on

   - Qualcomm pcs register clear before using

   - stm one off fix

   - TI runtimepm error handling, regmap leak fixes

   - Rockchip gadget mode disconnection and disruption fixes

   - Tegra register level fix

   - Broadcom pointer cast warning fix"

* tag 'phy-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy:
  phy: freescale: imx8m-pcie: assert phy reset during power on
  phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy_probe()
  phy: broadcom: ns-usb3: Fix Wvoid-pointer-to-enum-cast warning (again)
  phy: tegra: xusb: Explicitly configure HS_DISCON_LEVEL to 0x7
  phy: rockchip: inno-usb2: fix communication disruption in gadget mode
  phy: rockchip: inno-usb2: fix disconnection in gadget mode
  phy: ti: gmii-sel: fix regmap leak on probe failure
  phy: sparx5-serdes: make it selectable for ARCH_LAN969X
  phy: ti: da8xx-usb: Handle devm_pm_runtime_enable() errors
  phy: stm32-usphyc: Fix off by one in probe()
  phy: qcom-qusb2: Fix NULL pointer dereference on early suspend
  phy: fsl-imx8mq-usb: Clear the PCS_TX_SWING_FULL field before using it
  dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Update pcie phy bindings for qcs8300
  phy: fsl-imx8mq-usb: fix typec orientation switch when built as module

4 weeks agoMerge tag 'soundwire-6.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 18 Jan 2026 20:29:12 +0000 (12:29 -0800)] 
Merge tag 'soundwire-6.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire

Pull soundwire fix from Vinod Koul:

 - Single off-by-one fix for allocating slave id

* tag 'soundwire-6.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
  soundwire: bus: fix off-by-one when allocating slave IDs

4 weeks agoMerge tag 'usb-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 18 Jan 2026 20:09:13 +0000 (12:09 -0800)] 
Merge tag 'usb-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB fixes and new device ids for 6.19-rc6

  Included in here are:

   - new usb-serial device ids

   - dwc3-apple driver fixes to get things working properly on that
     hardware platform

   - ohci/uhci platfrom driver module soft-deps with ehci to remove a
     runtime warning that sometimes shows up on some platforms.

   - quirk for broken devices that can not handle reading the BOS
     descriptor from them without going crazy.

   - usb-serial driver fixes

   - xhci driver fixes

   - usb gadget driver fixes

  All of these except for the last xhci fix has been in linux-next for a
  while. The xhci fix has been reported by others to solve the issue for
  them, so should be ok"

* tag 'usb-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  xhci: sideband: don't dereference freed ring when removing sideband endpoint
  usb: gadget: uvc: retry vb2_reqbufs() with vb_vmalloc_memops if use_sg fail
  usb: gadget: uvc: return error from uvcg_queue_init()
  usb: gadget: uvc: fix interval_duration calculation
  usb: gadget: uvc: fix req_payload_size calculation
  usb: dwc3: apple: Ignore USB role switches to the active role
  usb: host: xhci-tegra: Use platform_get_irq_optional() for wake IRQs
  USB: OHCI/UHCI: Add soft dependencies on ehci_platform
  usb: dwc3: apple: Set USB2 PHY mode before dwc3 init
  USB: serial: f81232: fix incomplete serial port generation
  USB: serial: ftdi_sio: add support for PICAXE AXE027 cable
  USB: serial: option: add Telit LE910 MBIM composition
  usb: core: add USB_QUIRK_NO_BOS for devices that hang on BOS descriptor
  dt-bindings: usb: qcom,dwc3: Correct MSM8994 interrupts
  dt-bindings: usb: qcom,dwc3: Correct IPQ5018 interrupts
  tcpm: allow looking for role_sw device in the main node
  usb: dwc3: Check for USB4 IP_NAME

4 weeks agoMerge tag 'i2c-for-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sun, 18 Jan 2026 20:00:35 +0000 (12:00 -0800)] 
Merge tag 'i2c-for-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:

 - riic, imx-lpi2c: suspend/resume fixes

 - qcom-geni: DMA handling fix

 - iproc: correct DT binding description

* tag 'i2c-for-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: imx-lpi2c: change to PIO mode in system-wide suspend/resume progress
  i2c: qcom-geni: make sure I2C hub controllers can't use SE DMA
  i2c: riic: Move suspend handling to NOIRQ phase
  dt-bindings: i2c: brcm,iproc-i2c: Allow 2 reg entries for brcm,iproc-nic-i2c

4 weeks agoMerge tag 'edac_urgent_for_v6.19_rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Jan 2026 19:39:56 +0000 (11:39 -0800)] 
Merge tag 'edac_urgent_for_v6.19_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras

Pull EDAC fixes from Borislav Petkov:
 "Make sure the memory-mapped memory controller registers BAR gets
  unmapped when the driver memory allocation fails

  Fix that in both x38 and i3200 EDAC drivers as former has copied the
  bug from the latter, it looks like"

* tag 'edac_urgent_for_v6.19_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  EDAC/x38: Fix a resource leak in x38_probe1()
  EDAC/i3200: Fix a resource leak in i3200_probe1()

4 weeks agoMerge tag 'x86-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 18 Jan 2026 19:34:11 +0000 (11:34 -0800)] 
Merge tag 'x86-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc x86 fixes from Ingo Molnar:

 - Fix resctrl initialization on Hygon CPUs

 - Fix resctrl memory bandwidth counters on Hygon CPUs

 - Fix x86 self-tests build bug

* tag 'x86-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/x86: Add selftests include path for kselftest.h after centralization
  x86/resctrl: Fix memory bandwidth counter width for Hygon
  x86/resctrl: Add missing resctrl initialization for Hygon

4 weeks agoMerge tag 'timers-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Jan 2026 18:56:32 +0000 (10:56 -0800)] 
Merge tag 'timers-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Ingo Molnar:
 "Fix the update_needs_ipi() check in the hrtimer code that may result
  in incorrect skipping of hrtimer IPIs"

* tag 'timers-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  hrtimer: Fix softirq base check in update_needs_ipi()

4 weeks agoMerge tag 'sched-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Jan 2026 18:17:40 +0000 (10:17 -0800)] 
Merge tag 'sched-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc deadline scheduler fixes, mainly for a new category of bugs that
  were discovered and fixed recently:

   - Fix a race condition in the DL server

   - Fix a DL server bug which can result in incorrectly going idle when
     there's work available

   - Fix DL server bug which triggers a WARN() due to broken
     get_prio_dl() logic and subsequent misbehavior

   - Fix double update_rq_clock() calls

   - Fix setscheduler() assumption about static priorities

   - Make sure balancing callbacks are always called

   - Plus a handful of preparatory commits for the fixes"

* tag 'sched-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/deadline: Use ENQUEUE_MOVE to allow priority change
  sched: Deadline has dynamic priority
  sched: Audit MOVE vs balance_callbacks
  sched: Fold rq-pin swizzle into __balance_callbacks()
  sched/deadline: Avoid double update_rq_clock()
  sched/deadline: Ensure get_prio_dl() is up-to-date
  sched/deadline: Fix server stopping with runnable tasks
  sched: Provide idle_rq() helper
  sched/deadline: Fix potential race in dl_add_task_root_domain()
  sched/deadline: Remove unnecessary comment in dl_add_task_root_domain()

4 weeks agoMerge tag 'objtool-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Jan 2026 17:09:32 +0000 (09:09 -0800)] 
Merge tag 'objtool-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fixes from Ingo Molnar:
 "Fix two objtool build failures that trigger in uncommon build
  environments"

* tag 'objtool-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: fix build failure due to missing libopcodes check
  objtool: fix compilation failure with the x32 toolchain

4 weeks agoMerge tag 'irq-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 18 Jan 2026 17:08:27 +0000 (09:08 -0800)] 
Merge tag 'irq-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fix from Ingo Molnar:
 "Fix a riscv-imsic irqchip driver regression"

* tag 'irq-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/riscv-imsic: Revert "Remove redundant irq_data lookups"

4 weeks agoext4: fix iloc.bh leak in ext4_xattr_inode_update_ref
Yang Erkun [Sat, 13 Dec 2025 05:57:06 +0000 (13:57 +0800)] 
ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref

The error branch for ext4_xattr_inode_update_ref forget to release the
refcount for iloc.bh. Find this when review code.

Fixes: 57295e835408 ("ext4: guard against EA inode refcount underflow in xattr update")
Signed-off-by: Yang Erkun <yangerkun@huawei.com>
Reviewed-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20251213055706.3417529-1-yangerkun@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
4 weeks agoext4: add missing down_write_data_sem in mext_move_extent().
Julian Sun [Mon, 8 Dec 2025 12:37:13 +0000 (20:37 +0800)] 
ext4: add missing down_write_data_sem in mext_move_extent().

Commit 962e8a01eab9 ("ext4: introduce mext_move_extent()") attempts to
call ext4_swap_extents() on the failure path to recover the swapped
extents, but fails to acquire locks for the two inode->i_data_sem,
triggering the BUG_ON statement in ext4_swap_extents().

This issue can be fixed by calling ext4_double_down_write_data_sem()
before ext4_swap_extents().

Signed-off-by: Julian Sun <sunjunchao@bytedance.com>
Reported-by: syzbot+4ea6bd8737669b423aae@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/69368649.a70a0220.38f243.0093.GAE@google.com/
Fixes: 962e8a01eab9 ("ext4: introduce mext_move_extent()")
Reviewed-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://patch.msgid.link/20251208123713.1971068-1-sunjunchao@bytedance.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
4 weeks agoext4: fix ext4_tune_sb_params padding
Arnd Bergmann [Thu, 4 Dec 2025 10:19:10 +0000 (11:19 +0100)] 
ext4: fix ext4_tune_sb_params padding

The padding at the end of struct ext4_tune_sb_params is architecture
specific and in particular is different between x86-32 and x86-64,
since the __u64 member only enforces struct alignment on the latter.

This shows up as a new warning when test-building the headers with
-Wpadded:

include/linux/ext4.h:144:1: error: padding struct size to alignment boundary with 4 bytes [-Werror=padded]

All members inside the structure are naturally aligned, so the only
difference here is the amount of padding at the end. Make the padding
explicit, to have a consistent sizeof(struct ext4_tune_sb_params) of
232 on all architectures and avoid adding compat ioctl handling for
EXT4_IOC_GET_TUNE_SB_PARAM/EXT4_IOC_SET_TUNE_SB_PARAM.

This is an ABI break on x86-32 but hopefully this can go into 6.18.y early
enough as a fixup so no actual users will be affected.  Alternatively, the
kernel could handle the ioctl commands for both sizes (232 and 228 bytes)
on all architectures.

Fixes: 04a91570ac67 ("ext4: implemet new ioctls to set and get superblock parameters")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20251204101914.1037148-1-arnd@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
4 weeks agoMerge tag 'for-6.19-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
Linus Torvalds [Sun, 18 Jan 2026 03:29:32 +0000 (19:29 -0800)] 
Merge tag 'for-6.19-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - with large folios in use, fix partial incorrect update of a reflinked
   range

 - fix potential deadlock in iget when lookup fails and eviction is
   needed

 - in send, validate inline extent type while detecting file holes

 - fix memory leak after an error when creating a space info

 - remove zone statistics from sysfs again, the output size limitations
   make it unusable, we'll do it in another way in another release

 - test fixes:
     - return proper error codes from block remapping tests
     - fix tree root leaks in qgroup tests after errors

* tag 'for-6.19-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: remove zoned statistics from sysfs
  btrfs: fix memory leaks in create_space_info() error paths
  btrfs: invalidate pages instead of truncate after reflinking
  btrfs: update the Kconfig string for CONFIG_BTRFS_EXPERIMENTAL
  btrfs: send: check for inline extents in range_is_hole_in_parent()
  btrfs: tests: fix return 0 on rmap test failure
  btrfs: tests: fix root tree leak in btrfs_test_qgroups()
  btrfs: release path before iget_failed() in btrfs_read_locked_inode()

4 weeks agoMerge tag 'loongarch-fixes-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 18 Jan 2026 03:24:48 +0000 (19:24 -0800)] 
Merge tag 'loongarch-fixes-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
 "Remove redundant code in head.S, fix PMU counter allocation for mixed-
  type event groups, fix a lot of dts build warnings, and fix kvm_device
  memory leaks"

* tag 'loongarch-fixes-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: KVM: Fix kvm_device leak in kvm_pch_pic_destroy()
  LoongArch: KVM: Fix kvm_device leak in kvm_eiointc_destroy()
  LoongArch: KVM: Fix kvm_device leak in kvm_ipi_destroy()
  LoongArch: dts: loongson-2k1000: Fix i2c-gpio node names
  LoongArch: dts: loongson-2k2000: Add default interrupt controller address cells
  LoongArch: dts: loongson-2k1000: Add default interrupt controller address cells
  LoongArch: dts: loongson-2k0500: Add default interrupt controller address cells
  LoongArch: dts: Describe PCI sideband IRQ through interrupt-extended
  LoongArch: Fix PMU counter allocation for mixed-type event groups
  LoongArch: Remove redundant code in head.S

4 weeks agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Sat, 17 Jan 2026 16:52:45 +0000 (08:52 -0800)] 
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:
 "An arm64/mpam fix to use non-atomic bitops on struct mmap_props member
  (atomicity not required).

  For kunit testing, the structure is packed to avoid memcmp() errors
  but this affects atomic bitops as they have strict alignment
  requirements.

  Also remove a duplicate include in the mpam driver"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm_mpam: Use non-atomic bitops when modifying feature bitmap
  arm_mpam: Remove duplicate linux/srcu.h header

4 weeks agoselftests/x86: Add selftests include path for kselftest.h after centralization
Bala-Vignesh-Reddy [Wed, 22 Oct 2025 06:29:48 +0000 (11:59 +0530)] 
selftests/x86: Add selftests include path for kselftest.h after centralization

The previous change centralizing kselftest.h include path in lib.mk caused x86
selftests to fail, as x86 Makefile overwrites CFLAGS using ":=", dropping the
include path added in lib.mk. Therefore, helpers.h could not find kselftest.h
during compilation.

Fix this by adding the tools/testing/sefltest to CFLAGS in x86 Makefile.

  [ bp: Correct commit ID in Fixes: ]

Fixes: e6fbd1759c9e ("selftests: complete kselftest include centralization")
Closes: https://lore.kernel.org/lkml/CA+G9fYvKjQcCBMfXA-z2YuL2L+3Qd-pJjEUDX8PDdz2-EEQd=Q@mail.gmail.com/T/#m83fd330231287fc9d6c921155bee16c591db7360
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Bala-Vignesh-Reddy <reddybalavignesh9979@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Tested-by: Brendan Jackman <jackmanb@google.com>
Link: https://patch.msgid.link/20251022062948.162852-1-reddybalavignesh9979@gmail.com
4 weeks agorust: pin-init: Implement `InPlaceWrite<T>` for `&'static mut MaybeUninit<T>`
Oleksandr Babak [Thu, 8 Jan 2026 12:43:16 +0000 (13:43 +0100)] 
rust: pin-init: Implement `InPlaceWrite<T>` for `&'static mut MaybeUninit<T>`

This feature allows users to use `&'static mut MaybeUninit<T>` as a
place to initialize the value. It mirrors an existing implemetation
for `Box<MaybeUninit>`, but enables users to use external allocation
mechanisms such as `static_cell` [1].

Signed-off-by: Oleksandr Babak <alexanderbabak@proton.me>
Link: https://crates.io/crates/static_cell
[ Added link to `static_cell` - Benno ]
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agoMAINTAINERS: add Gary Guo to pin-init
Benno Lossin [Fri, 16 Jan 2026 10:54:30 +0000 (11:54 +0100)] 
MAINTAINERS: add Gary Guo to pin-init

Gary has been involved in pin-init since the very beginning. He created
his own version before I even joined Rust-for-Linux, contributed ideas
to my solution, and reviewed it. With the removal of the declarative
macro mess, he is also going to be a maintainer of pin-init.

Acked-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: internal: init: simplify Zeroable safety check
Benno Lossin [Fri, 16 Jan 2026 10:54:29 +0000 (11:54 +0100)] 
rust: pin-init: internal: init: simplify Zeroable safety check

The `Zeroable` type check uses a small dance with a raw pointer to aid
type inference. It turns out that this is not necessary and type
inference is powerful enough to resolve any ambiguity. Thus remove it.

Suggested-by: Gary Guo <gary@garyguo.net>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: internal: init: add escape hatch for referencing initialized fields
Benno Lossin [Fri, 16 Jan 2026 10:54:28 +0000 (11:54 +0100)] 
rust: pin-init: internal: init: add escape hatch for referencing initialized fields

The initializer macro emits mutable references for already initialized
fields, which allows modifying or accessing them later in code blocks or
when initializing other fields. This behavior results in compiler errors
when combining with packed structs, since those do not permit creating
references to misaligned fields. For example:

    #[repr(C, packed)]
    struct Foo {
        a: i8,
        b: i32,
    }

    fn main() {
        let _ = init!(Foo { a: -42, b: 42 });
    }

This will lead to an error like this:

    error[E0793]: reference to field of packed struct is unaligned
      --> tests/ui/compile-fail/init/packed_struct.rs:10:13
       |
    10 |     let _ = init!(Foo { a: -42, b: 42 });
       |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       |
       = note: this struct is 1-byte aligned, but the type of this field may require higher alignment
       = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
       = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
       = note: this error originates in the macro `init` (in Nightly builds, run with -Z macro-backtrace for more info)

This was requested by Janne Grunau [1] and will most certainly be used
by the kernel when we eventually end up with trying to initialize packed
structs.

Thus add an initializer attribute `#[disable_initialized_field_access]`
that does what the name suggests: do not generate references to already
initialized fields.

There is space for future work: add yet another attribute which can be
applied on fields of initializers that ask for said field to be made
accessible. We can add that when the need arises.

Requested-by: Janne Grunau <j@jannau.net>
Link: https://lore.kernel.org/all/20251206170214.GE1097212@robin.jannau.net
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: internal: init: add support for attributes on initializer fields
Benno Lossin [Fri, 16 Jan 2026 10:54:27 +0000 (11:54 +0100)] 
rust: pin-init: internal: init: add support for attributes on initializer fields

Initializer fields ought to support the same attributes that are allowed
in struct initializers on fields. For example, `cfg` or lint levels such
as `expect`, `allow` etc. Add parsing support for these attributes using
syn to initializer fields and adjust the macro expansion accordingly.

Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: init: use `#[default_error(err)]` for the initializer macros
Benno Lossin [Fri, 16 Jan 2026 10:54:26 +0000 (11:54 +0100)] 
rust: init: use `#[default_error(err)]` for the initializer macros

Initializer macros should use this attribute instead of manually parsing
the macro's input. This is because the syntax is now parsed using `syn`,
which permits more complex constructs to be parsed. In addition, this
ensures that the kernel's initializer marcos will have the exact same
syntax as the ones from pin-init.

Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: add `#[default_error(<type>)]` attribute to initializer macros
Benno Lossin [Fri, 16 Jan 2026 10:54:25 +0000 (11:54 +0100)] 
rust: pin-init: add `#[default_error(<type>)]` attribute to initializer macros

The `#[default_error(<type>)]` attribute can be used to supply a default
type as the error used for the `[pin_]init!` macros. This way one can
easily define custom `try_[pin_]init!` variants that default to your
project specific error type. Just write the following declarative macro:

    macro_rules! try_init {
        ($($args:tt)*) => {
            ::pin_init::init!(
                #[default_error(YourCustomErrorType)]
                $($args)*
            )
        }
    }

Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: rewrite the initializer macros using `syn`
Benno Lossin [Fri, 16 Jan 2026 10:54:24 +0000 (11:54 +0100)] 
rust: pin-init: rewrite the initializer macros using `syn`

Rewrite the initializer macros `[pin_]init!` using `syn`. No functional
changes intended aside from improved error messages on syntactic and
semantical errors. For example if one forgets to use `<-` with an
initializer (and instead uses `:`):

    impl Bar {
        fn new() -> impl PinInit<Self> { ... }
    }

    impl Foo {
        fn new() -> impl PinInit<Self> {
            pin_init!(Self { bar: Bar::new() })
        }
    }

Then the declarative macro would report:

    error[E0308]: mismatched types
      --> tests/ui/compile-fail/init/colon_instead_of_arrow.rs:21:9
       |
    14 |     fn new() -> impl PinInit<Self> {
       |                 ------------------ the found opaque type
    ...
    21 |         pin_init!(Self { bar: Bar::new() })
       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       |         |
       |         expected `Bar`, found opaque type
       |         arguments to this function are incorrect
       |
       = note:   expected struct `Bar`
               found opaque type `impl pin_init::PinInit<Bar>`
    note: function defined here
      --> $RUST/core/src/ptr/mod.rs
       |
       | pub const unsafe fn write<T>(dst: *mut T, src: T) {
       |                     ^^^^^
       = note: this error originates in the macro `$crate::__init_internal` which comes from the expansion of the macro `pin_init` (in Nightly builds, run with -Z macro-backtrace for more info)

And the new error is:

    error[E0308]: mismatched types
      --> tests/ui/compile-fail/init/colon_instead_of_arrow.rs:21:31
       |
    14 |     fn new() -> impl PinInit<Self> {
       |                 ------------------ the found opaque type
    ...
    21 |         pin_init!(Self { bar: Bar::new() })
       |                          ---  ^^^^^^^^^^ expected `Bar`, found opaque type
       |                          |
       |                          arguments to this function are incorrect
       |
       = note:   expected struct `Bar`
               found opaque type `impl pin_init::PinInit<Bar>`
    note: function defined here
      --> $RUST/core/src/ptr/mod.rs
       |
       | pub const unsafe fn write<T>(dst: *mut T, src: T) {
       |                     ^^^^^

Importantly, this error gives much more accurate span locations,
pointing to the offending field, rather than the entire macro
invocation.

Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: add `?Sized` bounds to traits in `#[pin_data]` macro
Benno Lossin [Fri, 16 Jan 2026 10:54:23 +0000 (11:54 +0100)] 
rust: pin-init: add `?Sized` bounds to traits in `#[pin_data]` macro

The `#[pin_data]` macro uses some auxiliary traits to ensure that a user
does not implement `Drop` for the annotated struct, as that is unsound
and can lead to UB. However, if the struct that is annotated is
`!Sized`, the current bounds do not work, because `Sized` is an implicit
bound for generics.

This is *not* a soundness hole of pin-init, as it currently is
impossible to construct an unsized struct using pin-init.

Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: rewrite `#[pin_data]` using `syn`
Benno Lossin [Fri, 16 Jan 2026 10:54:22 +0000 (11:54 +0100)] 
rust: pin-init: rewrite `#[pin_data]` using `syn`

Rewrite the attribute macro `#[pin_data]` using `syn`. No functional
changes intended aside from improved error messages on syntactic and
semantical errors. For example if one forgets a comma at the end of a
field:

    #[pin_data]
    struct Foo {
        a: Box<Foo>
        b: Box<Foo>
    }

The declarative macro reports the following errors:

    error: expected `,`, or `}`, found `b`
     --> tests/ui/compile-fail/pin_data/missing_comma.rs:5:16
      |
    5 |     a: Box<Foo>
      |                ^ help: try adding a comma: `,`

    error: recursion limit reached while expanding `$crate::__pin_data!`
     --> tests/ui/compile-fail/pin_data/missing_comma.rs:3:1
      |
    3 | #[pin_data]
      | ^^^^^^^^^^^
      |
      = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`$CRATE`)
      = note: this error originates in the macro `$crate::__pin_data` which comes from the expansion of the attribute macro `pin_data` (in Nightly builds, run with -Z macro-backtrace for more info)

The new `syn` version reports:

    error: expected `,`, or `}`, found `b`
     --> tests/ui/compile-fail/pin_data/missing_comma.rs:5:16
      |
    5 |     a: Box<Foo>
      |                ^ help: try adding a comma: `,`

    error: expected `,`
     --> tests/ui/compile-fail/pin_data/missing_comma.rs:6:5
      |
    6 |     b: Box<Foo>
      |     ^

Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: rewrite the `#[pinned_drop]` attribute macro using `syn`
Benno Lossin [Fri, 16 Jan 2026 10:54:21 +0000 (11:54 +0100)] 
rust: pin-init: rewrite the `#[pinned_drop]` attribute macro using `syn`

Rewrite the attribute macro for implementing `PinnedDrop` using `syn`.
Otherwise no functional changes intended aside from improved error
messages on syntactic and semantical errors. For example:

When missing the `drop` function in the implementation, the old error
was:

    error: no rules expected `)`
     --> tests/ui/compile-fail/pinned_drop/no_fn.rs:6:1
      |
    6 | #[pinned_drop]
      | ^^^^^^^^^^^^^^ no rules expected this token in macro call
      |
    note: while trying to match keyword `fn`
     --> src/macros.rs
      |
      |             fn drop($($sig:tt)*) {
      |             ^^
      = note: this error originates in the attribute macro `pinned_drop` (in Nightly builds, run with -Z macro-backtrace for more info)

And the new one is:

    error[E0046]: not all trait items implemented, missing: `drop`
     --> tests/ui/compile-fail/pinned_drop/no_fn.rs:7:1
      |
    7 | impl PinnedDrop for Foo {}
      | ^^^^^^^^^^^^^^^^^^^^^^^ missing `drop` in implementation
      |
      = help: implement the missing item: `fn drop(self: Pin<&mut Self>, _: OnlyCallFromDrop) { todo!() }`

Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: rewrite `derive(Zeroable)` and `derive(MaybeZeroable)` using `syn`
Benno Lossin [Fri, 16 Jan 2026 10:54:20 +0000 (11:54 +0100)] 
rust: pin-init: rewrite `derive(Zeroable)` and `derive(MaybeZeroable)` using `syn`

Rewrite the two derive macros for `Zeroable` using `syn`. One positive
side effect of this change is that tuple structs are now supported by
them. Additionally, syntax errors and the error emitted when trying to
use one of the derive macros on an `enum` are improved. Otherwise no
functional changes intended.

For example:

    #[derive(Zeroable)]
    enum Num {
        A(u32),
        B(i32),
    }

Produced this error before this commit:

    error: no rules expected keyword `enum`
     --> tests/ui/compile-fail/zeroable/enum.rs:5:1
      |
    5 | enum Num {
      | ^^^^ no rules expected this token in macro call
      |
    note: while trying to match keyword `struct`
     --> src/macros.rs
      |
      |             $vis:vis struct $name:ident
      |                      ^^^^^^

Now the error is:

    error: cannot derive `Zeroable` for an enum
     --> tests/ui/compile-fail/zeroable/enum.rs:5:1
      |
    5 | enum Num {
      | ^^^^

    error: cannot derive `Zeroable` for an enum

Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: internal: add utility API for syn error handling
Benno Lossin [Fri, 16 Jan 2026 10:54:19 +0000 (11:54 +0100)] 
rust: pin-init: internal: add utility API for syn error handling

The API is similar to diagnostics handling in rustc and uses a
`ErrorGuaranteed` value to signify that an error has been emitted. It
supports both fatal errors (which abort the macro expansion immediately
by returning `Err(ErrorGuaranteed)`) and non-fatal ones at generation
time. These errors are appended to the token stream after generation has
finished normally. This allows giving good errors while still expanding
most of the code as expected to avoid the user encountering additional
errors (for example missing definitions).

Suggested-by: Gary Guo <gary@garyguo.net>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
[ remove duplicate word in commit message - Benno ]
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: add `syn` dependency and remove `proc-macro[2]` and `quote` workarounds
Benno Lossin [Fri, 16 Jan 2026 10:54:18 +0000 (11:54 +0100)] 
rust: pin-init: add `syn` dependency and remove `proc-macro[2]` and `quote` workarounds

`syn` makes parsing Rust from proc-macros a lot simpler. `pin-init` has
not used `syn` up until now, because the we did not support it. That
changed in commit 54e3eae85562 ("Merge patch series "`syn` support""),
so we can finally utilize the added ergonomics of parsing proc-macro
input with `syn`.

Previously we only had the `proc-macro` library available, whereas the
user-space version also used `proc-macro2` and `quote`. Now both are
available, so remove the workarounds.

Due to these changes, clippy emits warnings about unnecessary
`.to_string()` as `proc-macro2` provides an additional `PartialEq` impl
on `Ident`, so the warnings are fixed.

[ Adjusted wording from upstream version and added build system changes
  for the kernel - Benno ]

Co-developed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Tamir Duberstein <tamird@gmail.com>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: allow the crate to refer to itself as `pin-init` in doc tests
Benno Lossin [Fri, 16 Jan 2026 10:54:17 +0000 (11:54 +0100)] 
rust: pin-init: allow the crate to refer to itself as `pin-init` in doc tests

The `syn` approach requires use of `::pin_init::...` instead of the
`$crate::...` construct available to declarative macros. To be able to
use the `pin_init` crate from itself (which includes doc tests), we have
to declare it as such.

Reviewed-by: Gary Guo <gary@garyguo.net>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agorust: pin-init: remove `try_` versions of the initializer macros
Benno Lossin [Fri, 16 Jan 2026 10:54:16 +0000 (11:54 +0100)] 
rust: pin-init: remove `try_` versions of the initializer macros

The `try_[pin_]init!` versions of the initializer macros are
superfluous. Instead of forcing the user to always write an error in
`try_[pin_]init!` and not allowing one in `[pin_]init!`, combine them
into `[pin_]init!` that defaults the error to
`core::convert::Infallible`, but also allows to specify a custom one.

Projects using pin-init still can provide their own defaulting
initializers using the `try_` prefix by using the `#[default_error]`
attribute added in a future patch.

[ Adjust the definition of the kernel's version of the `try_`
  initializer macros - Benno]

Reviewed-by: Gary Guo <gary@garyguo.net>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Signed-off-by: Benno Lossin <lossin@kernel.org>
4 weeks agoMerge tag 'block-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 17 Jan 2026 04:59:46 +0000 (20:59 -0800)] 
Merge tag 'block-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull block fixes from Jens Axboe:

 - NVMe pull request via Keith:
     - Device quirk to disable faulty temperature (Ilikara)
     - TCP target null pointer fix from bad host protocol usage (Shivam)
     - Add apple,t8103-nvme-ans2 as a compatible apple controller
       (Janne)
     - FC tagset leak fix (Chaitanya)
     - TCP socket deadlock fix (Hannes)
     - Target name buffer overrun fix (Shin'ichiro)

 - Fix for an underflow for rnbd during device unmap

 - Zero the non-PI part of the auto integrity buffer

 - Fix for a configfs memory leak in the null block driver

* tag 'block-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  rnbd-clt: fix refcount underflow in device unmap path
  nvme: fix PCIe subsystem reset controller state transition
  nvmet: do not copy beyond sybsysnqn string length
  nvmet-tcp: fixup hang in nvmet_tcp_listen_data_ready()
  null_blk: fix kmemleak by releasing references to fault configfs items
  block: zero non-PI portion of auto integrity buffer
  nvme-fc: release admin tagset if init fails
  nvme-apple: add "apple,t8103-nvme-ans2" as compatible
  nvme-tcp: fix NULL pointer dereferences in nvmet_tcp_build_pdu_iovec
  nvme-pci: disable secondary temp for Wodposit WPBSNM8

4 weeks agoMerge tag 'io_uring-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 17 Jan 2026 04:56:56 +0000 (20:56 -0800)] 
Merge tag 'io_uring-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull io_uring fix from Jens Axboe:
 "Just a single fix moving local task_work inside the cancelation loop,
  rather than only before cancelations.

  If any cancelations generate task_work, we do need to re-run it"

* tag 'io_uring-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring: move local task_work in exit cancel loop

4 weeks agoLoongArch: KVM: Fix kvm_device leak in kvm_pch_pic_destroy()
Qiang Ma [Sat, 17 Jan 2026 02:57:03 +0000 (10:57 +0800)] 
LoongArch: KVM: Fix kvm_device leak in kvm_pch_pic_destroy()

In kvm_ioctl_create_device(), kvm_device has allocated memory,
kvm_device->destroy() seems to be supposed to free its kvm_device
struct, but kvm_pch_pic_destroy() is not currently doing this, that
would lead to a memory leak.

So, fix it.

Cc: stable@vger.kernel.org
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
4 weeks agoLoongArch: KVM: Fix kvm_device leak in kvm_eiointc_destroy()
Qiang Ma [Sat, 17 Jan 2026 02:57:02 +0000 (10:57 +0800)] 
LoongArch: KVM: Fix kvm_device leak in kvm_eiointc_destroy()

In kvm_ioctl_create_device(), kvm_device has allocated memory,
kvm_device->destroy() seems to be supposed to free its kvm_device
struct, but kvm_eiointc_destroy() is not currently doing this, that
would lead to a memory leak.

So, fix it.

Cc: stable@vger.kernel.org
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
4 weeks agoLoongArch: KVM: Fix kvm_device leak in kvm_ipi_destroy()
Qiang Ma [Sat, 17 Jan 2026 02:57:02 +0000 (10:57 +0800)] 
LoongArch: KVM: Fix kvm_device leak in kvm_ipi_destroy()

In kvm_ioctl_create_device(), kvm_device has allocated memory,
kvm_device->destroy() seems to be supposed to free its kvm_device
struct, but kvm_ipi_destroy() is not currently doing this, that
would lead to a memory leak.

So, fix it.

Cc: stable@vger.kernel.org
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
4 weeks agoLoongArch: dts: loongson-2k1000: Fix i2c-gpio node names
Binbin Zhou [Sat, 17 Jan 2026 02:56:53 +0000 (10:56 +0800)] 
LoongArch: dts: loongson-2k1000: Fix i2c-gpio node names

The binding wants the node to be named "i2c-number", but those are named
"i2c-gpio-number" instead.

Thus rename those to i2c-0, i2c-1 to adhere to the binding and suppress
dtbs_check warnings.

Cc: stable@vger.kernel.org
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
4 weeks agoLoongArch: dts: loongson-2k2000: Add default interrupt controller address cells
Binbin Zhou [Sat, 17 Jan 2026 02:56:53 +0000 (10:56 +0800)] 
LoongArch: dts: loongson-2k2000: Add default interrupt controller address cells

Add missing address-cells 0 to the Local I/O, Extend I/O and PCH-PIC
Interrupt Controller node to silence W=1 warning:

  loongson-2k2000.dtsi:364.5-49: Warning (interrupt_map): /bus@10000000/pcie@1a000000/pcie@9,0:interrupt-map:
    Missing property '#address-cells' in node /bus@10000000/interrupt-controller@10000000, using 0 as fallback

Value '0' is correct because:
1. The LIO/EIO/PCH interrupt controller does not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Cc: stable@vger.kernel.org
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
4 weeks agoLoongArch: dts: loongson-2k1000: Add default interrupt controller address cells
Binbin Zhou [Sat, 17 Jan 2026 02:56:53 +0000 (10:56 +0800)] 
LoongArch: dts: loongson-2k1000: Add default interrupt controller address cells

Add missing address-cells 0 to the Local I/O interrupt controller node
to silence W=1 warning:

  loongson-2k1000.dtsi:498.5-55: Warning (interrupt_map): /bus@10000000/pcie@1a000000/pcie@9,0:interrupt-map:
    Missing property '#address-cells' in node /bus@10000000/interrupt-controller@1fe01440, using 0 as fallback

Value '0' is correct because:
1. The Local I/O interrupt controller does not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Cc: stable@vger.kernel.org
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
4 weeks agoLoongArch: dts: loongson-2k0500: Add default interrupt controller address cells
Binbin Zhou [Sat, 17 Jan 2026 02:56:52 +0000 (10:56 +0800)] 
LoongArch: dts: loongson-2k0500: Add default interrupt controller address cells

Add missing address-cells 0 to the Local I/O and Extend I/O interrupt
controller node to silence W=1 warning:

  loongson-2k0500.dtsi:513.5-51: Warning (interrupt_map): /bus@10000000/pcie@1a000000/pcie@0,0:interrupt-map:
    Missing property '#address-cells' in node /bus@10000000/interrupt-controller@1fe11600, using 0 as fallback

Value '0' is correct because:
1. The Local I/O & Extend I/O interrupt controller do not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Cc: stable@vger.kernel.org
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
4 weeks agoLoongArch: dts: Describe PCI sideband IRQ through interrupt-extended
Yao Zi [Sat, 17 Jan 2026 02:56:52 +0000 (10:56 +0800)] 
LoongArch: dts: Describe PCI sideband IRQ through interrupt-extended

SoC integrated peripherals on LS2K1000 and LS2K2000 could be discovered
as PCI devices, but require sideband interrupts to function, which are
previously described by interrupts and interrupt-parent properties.

However, pci/pci-device.yaml allows interrupts property to only specify
PCI INTx interrupts, not sideband ones. Convert these devices to use
interrupt-extended property, which describes sideband interrupts used by
PCI devices since dt-schema commit e6ea659d2baa ("schemas: pci-device:
Allow interrupts-extended for sideband interrupts"), eliminating
dtbs_check warnings.

Cc: stable@vger.kernel.org
Fixes: 30a5532a3206 ("LoongArch: dts: DeviceTree for Loongson-2K1000")
Signed-off-by: Yao Zi <me@ziyao.cc>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
4 weeks agoLoongArch: Fix PMU counter allocation for mixed-type event groups
Lisa Robinson [Sat, 17 Jan 2026 02:56:43 +0000 (10:56 +0800)] 
LoongArch: Fix PMU counter allocation for mixed-type event groups

When validating a perf event group, validate_group() unconditionally
attempts to allocate hardware PMU counters for the leader, sibling
events and the new event being added.

This is incorrect for mixed-type groups. If a PERF_TYPE_SOFTWARE event
is part of the group, the current code still tries to allocate a hardware
PMU counter for it, which can wrongly consume hardware PMU resources and
cause spurious allocation failures.

Fix this by only allocating PMU counters for hardware events during group
validation, and skipping software events.

A trimmed down reproducer is as simple as this:

  #include <stdio.h>
  #include <assert.h>
  #include <unistd.h>
  #include <string.h>
  #include <sys/syscall.h>
  #include <linux/perf_event.h>

  int main (int argc, char *argv[])
  {
   struct perf_event_attr attr = { 0 };
   int fds[5];

   attr.disabled = 1;
   attr.exclude_kernel = 1;
   attr.exclude_hv = 1;
   attr.read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
   PERF_FORMAT_TOTAL_TIME_RUNNING | PERF_FORMAT_ID | PERF_FORMAT_GROUP;
   attr.size = sizeof (attr);

   attr.type = PERF_TYPE_SOFTWARE;
   attr.config = PERF_COUNT_SW_DUMMY;
   fds[0] = syscall (SYS_perf_event_open, &attr, 0, -1, -1, 0);
   assert (fds[0] >= 0);

   attr.type = PERF_TYPE_HARDWARE;
   attr.config = PERF_COUNT_HW_CPU_CYCLES;
   fds[1] = syscall (SYS_perf_event_open, &attr, 0, -1, fds[0], 0);
   assert (fds[1] >= 0);

   attr.type = PERF_TYPE_HARDWARE;
   attr.config = PERF_COUNT_HW_INSTRUCTIONS;
   fds[2] = syscall (SYS_perf_event_open, &attr, 0, -1, fds[0], 0);
   assert (fds[2] >= 0);

   attr.type = PERF_TYPE_HARDWARE;
   attr.config = PERF_COUNT_HW_BRANCH_MISSES;
   fds[3] = syscall (SYS_perf_event_open, &attr, 0, -1, fds[0], 0);
   assert (fds[3] >= 0);

   attr.type = PERF_TYPE_HARDWARE;
   attr.config = PERF_COUNT_HW_CACHE_REFERENCES;
   fds[4] = syscall (SYS_perf_event_open, &attr, 0, -1, fds[0], 0);
   assert (fds[4] >= 0);

   printf ("PASSED\n");

   return 0;
  }

Cc: stable@vger.kernel.org
Fixes: b37042b2bb7c ("LoongArch: Add perf events support")
Signed-off-by: Lisa Robinson <lisa@bytefly.space>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
4 weeks agoMerge tag 'drm-fixes-2026-01-16' of https://gitlab.freedesktop.org/drm/kernel
Linus Torvalds [Fri, 16 Jan 2026 21:48:18 +0000 (13:48 -0800)] 
Merge tag 'drm-fixes-2026-01-16' of https://gitlab.freedesktop.org/drm/kernel

Pull drm fixes from Simona Vetter:
 "We've had nothing aside of a compiler noise fix until today, when the
  amd and drm-misc fixes showed up after Dave already went into weekend
  mode. So it's on me to push these out, since there's a bunch of
  important fixes in here I think that shouldn't be delayed for a week.

  Core Changes:
   - take gem lock when preallocating in gpuvm
   - add single byte read fallback to dp for broken usb-c adapters
   - remove duplicate drm_sysfb declarations

  Driver Changes:
   - i915: compiler noise fix
   - amdgpu/amdkfd: pile of fixes all over
   - vmwgfx:
      - v10 cursor regression fix
      - other fixes
   - rockchip:
      - waiting for cfgdone regression fix
      - other fixes
   - gud: fix oops on disconnect
   - simple-panel:
      - regression fix when connector is not set
      - fix for DataImage SCF0700C48GGU18
   - nouveau: cursor handling locking fix"

* tag 'drm-fixes-2026-01-16' of https://gitlab.freedesktop.org/drm/kernel: (33 commits)
  drm/amd/display: Add an hdmi_hpd_debounce_delay_ms module
  drm/amdgpu/userq: Fix fence reference leak on queue teardown v2
  drm/amdkfd: No need to suspend whole MES to evict process
  Revert "drm/amdgpu: don't attach the tlb fence for SI"
  drm/amdgpu: validate the flush_gpu_tlb_pasid()
  drm/amd/pm: fix smu overdrive data type wrong issue on smu 14.0.2
  drm/amd/display: Initialise backlight level values from hw
  drm/amd/display: Bump the HDMI clock to 340MHz
  drm/amd/display: Show link name in PSR status message
  drm/amdkfd: fix a memory leak in device_queue_manager_init()
  drm/amdgpu: make sure userqs are enabled in userq IOCTLs
  drm/amdgpu: Use correct address to setup gart page table for vram access
  Revert duplicate "drm/amdgpu: disable peer-to-peer access for DCC-enabled GC12 VRAM surfaces"
  drm/amd: Clean up kfd node on surprise disconnect
  drm/amdgpu: fix drm panic null pointer when driver not support atomic
  drm/amdgpu: Fix gfx9 update PTE mtype flag
  drm/sysfb: Remove duplicate declarations
  drm/nouveau/kms/nv50-: Assert we hold nv50_disp->lock in nv50_head_flush_*
  drm/nouveau/disp/nv50-: Set lock_core in curs507a_prepare
  drm/gud: fix NULL fb and crtc dereferences on USB disconnect
  ...

4 weeks agoMerge tag 'cxl-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Linus Torvalds [Fri, 16 Jan 2026 21:09:28 +0000 (13:09 -0800)] 
Merge tag 'cxl-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Pull Compute Express Link (CXL) fixes from Dave Jiang:

 - Recognize all ZONE_DEVICE users as physaddr consumers

 - Fix format string for extended_linear_cache_size_show()

 - Fix target list setup for multiple decoders sharing the same
   downstream port

 - Restore HBIW check before derefernce platform data

 - Fix potential infinite loop in __cxl_dpa_reserve()

 - Check for invalid addresses returned from translation functions on
   error

* tag 'cxl-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
  cxl: Check for invalid addresses returned from translation functions on errors
  cxl/hdm: Fix potential infinite loop in __cxl_dpa_reserve()
  cxl/acpi: Restore HBIW check before dereferencing platform_data
  cxl/port: Fix target list setup for multiple decoders sharing the same dport
  cxl/region: fix format string for resource_size_t
  x86/kaslr: Recognize all ZONE_DEVICE users as physaddr consumers

4 weeks agoMerge tag 'pci-v6.19-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Linus Torvalds [Fri, 16 Jan 2026 20:24:22 +0000 (12:24 -0800)] 
Merge tag 'pci-v6.19-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull PCI fix from Bjorn Helgaas:

 - Add a pci_free_irq_vectors() stub to fix a build issue when
   CONFIG_PCI is not set (Boqun Feng)

* tag 'pci-v6.19-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
  PCI: Provide pci_free_irq_vectors() stub

4 weeks agoMerge tag 'pm-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 16 Jan 2026 20:08:19 +0000 (12:08 -0800)] 
Merge tag 'pm-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix an error path memory leak in the energy model management
  code, fix a kerneldoc comment in it, and fix and revamp the energy
  model YNL specification added recently along with the new energy model
  management netlink interface (that received feedback after being
  added):

   - Fix a memory leak in em_create_pd() error path (Malaya Kumar Rout)

   - Fix stale description of the cost field in struct em_perf_state to
     reflect the current code (Yaxiong Tian)

   - Fix and revamp the energy model YNL specification added recently
     along with the energy model netlink interface (Changwoo Min)"

* tag 'pm-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: EM: Add dump to get-perf-domains in the EM YNL spec
  PM: EM: Change cpus' type from string to u64 array in the EM YNL spec
  PM: EM: Rename em.yaml to dev-energymodel.yaml
  PM: EM: Fix yamllint warnings in the EM YNL spec
  PM: EM: Fix memory leak in em_create_pd() error path
  PM: EM: Fix incorrect description of the cost field in struct em_perf_state

4 weeks agoMerge tag 'drm-misc-fixes-2026-01-16' of https://gitlab.freedesktop.org/drm/misc...
Simona Vetter [Fri, 16 Jan 2026 19:27:20 +0000 (20:27 +0100)] 
Merge tag 'drm-misc-fixes-2026-01-16' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

drm-misc-fixes for v6.19-rc6:

vmwgfx:
- Fix hw regression from refactoring cursor handling on v10 'hardware'
- Fix warnings in destructor by merging the 2 release functions
- kernel doc fix
- error handling in vmw_compat_shader_add()

rockchip:
- fix vop2 polling
- fix regression waiting for cfgdone without config change
- fix warning when enabling encoder

core:
- take gem lock when preallocating in gpuvm.
- add single byte read fallback to dp for broken usb-c adapters
- remove duplicate drm_sysfb declarations

gud:
- Fix oops on usb disconnect

Simple panel:
- Re-add fallback when connector is not set to fix regressions
- Set correct type in DataImage SCF0700C48GGU18

nouveau:
- locking fixes for cursor handling.

Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/ce0acfe2-9c1a-42b7-8782-f1e7f34b8544@linux.intel.com
4 weeks agoMerge tag 'acpi-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 16 Jan 2026 19:03:17 +0000 (11:03 -0800)] 
Merge tag 'acpi-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "Add checks missed by a previous recent update to the ACPI
  suspend-to-idle code and add a debug module parameter to it
  to work around a platform firmware issue exposed by that
  update (Rafael Wysocki)"

* tag 'acpi-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: PM: s2idle: Add module parameter for LPS0 constraints checking
  ACPI: PM: s2idle: Add missing checks to acpi_s2idle_begin_lps0()

4 weeks agoMerge tag 'sound-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 16 Jan 2026 18:48:17 +0000 (10:48 -0800)] 
Merge tag 'sound-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This became a bit larger than wished for, often seen as a bump at the
  middle, but almost all changes are small device-specific fixes, so the
  risk must be pretty low.

   - SoundWire fix for missing symbol export

   - Fixes for device-tree bindings

   - A fix for OOB access in USB-audio, spotted by fuzzer

   - Quirks for HD-audio, SoundWire, AMD ACP

   - A series of ASoC tlv320 and wsa codec fixes

   - Other misc fixes in PCM OSS error-handling, Cirrus scodec test,
     ASoC ops endianess, davinci, simple-card, and tegra"

* tag 'sound-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (33 commits)
  ALSA: hda/tas2781: Add newly-released HP laptop
  ASoC: rt5640: Fix duplicate clock properties in DT binding
  ALSA: hda/realtek: Add quirk for HP Pavilion x360 to enable mute LED
  ASoC: tlv320adcx140: fix word length
  ASoC: tlv320adcx140: Propagate error codes during probe
  ASoC: tlv320adcx140: fix null pointer
  ASoC: tlv320adcx140: invert DRE_ENABLE
  ASoC: sdw_utils: cs42l43: Enable Headphone pin for LINEOUT jack type
  ASoC: sdw_utils: Call init callbacks on the correct codec DAI
  soundwire: Add missing EXPORT for sdw_slave_type
  ALSA: usb-audio: Prevent excessive number of frames
  ALSA: hda/cirrus_scodec_test: Fix test suite name
  ALSA: hda/cirrus_scodec_test: Fix incorrect setup of gpiochip
  ALSA: hda/realtek: Add quirk for Asus Zephyrus G14 2025 using CS35L56, fix speakers
  ASoC: amd: yc: Fix microphone on ASUS M6500RE
  ASoC: tegra: Revert fix for uninitialized flat cache warning in tegra210_ahub
  ASoC: dt-bindings: rockchip-spdif: Allow "port" node
  ASoC: dt-bindings: realtek,rt5640: Allow 7 for realtek,jack-detect-source
  ASoC: dt-bindings: realtek,rt5640: Add missing properties/node
  ASoC: dt-bindings: realtek,rt5640: Document port node
  ...

4 weeks agoMerge tag 'amd-drm-fixes-6.19-2026-01-15' of https://gitlab.freedesktop.org/agd5f...
Simona Vetter [Fri, 16 Jan 2026 18:37:22 +0000 (19:37 +0100)] 
Merge tag 'amd-drm-fixes-6.19-2026-01-15' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-6.19-2026-01-15:

amdgpu:
- GC 9 PTE mtype fix
- Non-DC display kernel panic helper fix
- Merge fix
- GART vram access fix
- Userq fixes
- PSR debugging fix
- HDMI fixes
- Backlight fix
- SMU 14 fix
- TLB flush fixes

amdkfd:
- KFD node cleanup for eGPU disconnect
- Memory leak fix
- MES evict process fix

Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20260115205405.1890089-1-alexander.deucher@amd.com
4 weeks agoMerge tag 'gpio-fixes-for-v6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 16 Jan 2026 17:55:09 +0000 (09:55 -0800)] 
Merge tag 'gpio-fixes-for-v6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:
 "Two more GPIO fixes addressing an issue uncovered by the shared GPIO
  management changes in v6.19:

   - implement the missing .get_direction() callback for gpio-davinci

   - remove redundant check in GPIO core which can also propagate an
     invalid errno to user-space"

* tag 'gpio-fixes-for-v6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpiolib: remove redundant callback check
  gpio: davinci: implement .get_direction()

4 weeks agoMerge tag 'printk-for-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 16 Jan 2026 17:46:59 +0000 (09:46 -0800)] 
Merge tag 'printk-for-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull printk fix from Petr Mladek:

 - Prevent softlockup by restoring IRQs in atomic flush after each
   record

* tag 'printk-for-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  printk/nbcon: Restore IRQ in atomic flush after each emitted record

4 weeks agoMerge tag 'xfs-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Fri, 16 Jan 2026 17:09:41 +0000 (09:09 -0800)] 
Merge tag 'xfs-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Carlos Maiolino:
 "Just a few obvious fixes and some 'cosmetic' changes"

* tag 'xfs-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: set max_agbno to allow sparse alloc of last full inode chunk
  xfs: Fix xfs_grow_last_rtg()
  xfs: improve the assert at the top of xfs_log_cover
  xfs: fix an overly long line in xfs_rtgroup_calc_geometry
  xfs: mark __xfs_rtgroup_extents static
  xfs: Fix the return value of xfs_rtcopy_summary()
  xfs: fix memory leak in xfs_growfs_check_rtgeom()

4 weeks agoMerge branch 'pm-em'
Rafael J. Wysocki [Fri, 16 Jan 2026 15:16:24 +0000 (16:16 +0100)] 
Merge branch 'pm-em'

Merge fixes related to the energy model management for 6.19-rc6:

 - Fix a memory leak in em_create_pd() error path (Malaya Kumar Rout)

 - Fix stale description of the cost field in struct em_perf_state to
   reflect the current code (Yaxiong Tian)

 - Fix and revamp the energy model YNL specification added recently
   along with the energy model netlink interface (Changwoo Min)

* pm-em:
  PM: EM: Add dump to get-perf-domains in the EM YNL spec
  PM: EM: Change cpus' type from string to u64 array in the EM YNL spec
  PM: EM: Rename em.yaml to dev-energymodel.yaml
  PM: EM: Fix yamllint warnings in the EM YNL spec
  PM: EM: Fix memory leak in em_create_pd() error path
  PM: EM: Fix incorrect description of the cost field in struct em_perf_state

4 weeks agoarm_mpam: Use non-atomic bitops when modifying feature bitmap
Ben Horgan [Mon, 12 Jan 2026 16:58:29 +0000 (16:58 +0000)] 
arm_mpam: Use non-atomic bitops when modifying feature bitmap

In the test__props_mismatch() kunit test we rely on the struct mpam_props
being packed to ensure memcmp doesn't consider packing. Making it packed
reduces the alignment of the features bitmap and so breaks a requirement
for the use of atomics. As we don't rely on the set/clear of these bits
being atomic, just make them non-atomic.

Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Fixes: 8c90dc68a5de ("arm_mpam: Probe the hardware features resctrl supports")
Reviewed-by: Gavin Shan <gshan@redhat.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Peter Newman <peternewman@google.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
4 weeks agoarm_mpam: Remove duplicate linux/srcu.h header
Jiapeng Chong [Mon, 12 Jan 2026 16:58:28 +0000 (16:58 +0000)] 
arm_mpam: Remove duplicate linux/srcu.h header

./drivers/resctrl/mpam_internal.h: linux/srcu.h is included more than once.

Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=27328
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Acked-by: James Morse <james.morse@arm.com>
[BH: Keep alphabetical order]
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Fenghua Yu <fenghuay@nvidia.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Peter Newman <peternewman@google.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
4 weeks agoxhci: sideband: don't dereference freed ring when removing sideband endpoint
Mathias Nyman [Thu, 15 Jan 2026 23:37:58 +0000 (01:37 +0200)] 
xhci: sideband: don't dereference freed ring when removing sideband endpoint

xhci_sideband_remove_endpoint() incorrecly assumes that the endpoint is
running and has a valid transfer ring.

Lianqin reported a crash during suspend/wake-up stress testing, and
found the cause to be dereferencing a non-existing transfer ring
'ep->ring' during xhci_sideband_remove_endpoint().

The endpoint and its ring may be in unknown state if this function
is called after xHCI was reinitialized in resume (lost power), or if
device is being re-enumerated, disconnected or endpoint already dropped.

Fix this by both removing unnecessary ring access, and by checking
ep->ring exists before dereferencing it. Also make sure endpoint is
running before attempting to stop it.

Remove the xhci_initialize_ring_info() call during sideband endpoint
removal as is it only initializes ring structure enqueue, dequeue and
cycle state values to their starting values without changing actual
hardware enqueue, dequeue and cycle state. Leaving them out of sync
is worse than leaving it as it is. The endpoint will get freed in after
this in most usecases.

If the (audio) class driver want's to reuse the endpoint after offload
then it is up to the class driver to ensure endpoint is properly set up.

Reported-by: 胡连勤 <hulianqin@vivo.com>
Closes: https://lore.kernel.org/linux-usb/TYUPR06MB6217B105B059A7730C4F6EC8D2B9A@TYUPR06MB6217.apcprd06.prod.outlook.com/
Tested-by: 胡连勤 <hulianqin@vivo.com>
Fixes: de66754e9f80 ("xhci: sideband: add initial api to register a secondary interrupter entity")
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260115233758.364097-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 weeks agoMerge tag 'usb-serial-6.19-rc6' of ssh://gitolite.kernel.org/pub/scm/linux/kernel...
Greg Kroah-Hartman [Fri, 16 Jan 2026 10:57:55 +0000 (11:57 +0100)] 
Merge tag 'usb-serial-6.19-rc6' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB serial fix for 6.19-rc6

Here's a fix for an f81232 enumeration issue that could prevent some
ports from being enabled (e.g. during driver rebind).

Included are also some new device ids.

All have been in linux-next with no reported issues.

* tag 'usb-serial-6.19-rc6' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
  USB: serial: f81232: fix incomplete serial port generation
  USB: serial: ftdi_sio: add support for PICAXE AXE027 cable
  USB: serial: option: add Telit LE910 MBIM composition

4 weeks agokernel: cgroup: Add LGPL-2.1 SPDX license ID to legacy_freezer.c
Tim Bird [Wed, 14 Jan 2026 23:22:08 +0000 (16:22 -0700)] 
kernel: cgroup: Add LGPL-2.1 SPDX license ID to legacy_freezer.c

Add an appropriate SPDX-License-Identifier line to the file,
and remove the GNU boilerplate text.

Signed-off-by: Tim Bird <tim.bird@sony.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
4 weeks agokernel: cgroup: Add SPDX-License-Identifier lines
Tim Bird [Wed, 14 Jan 2026 20:30:27 +0000 (13:30 -0700)] 
kernel: cgroup: Add SPDX-License-Identifier lines

Add GPL-2.0 SPDX license id lines to a few old
files, replacing the reference to the COPYING file.

The COPYING file at the time of creation of these files
(2007 and 2005) was GPL-v2.0, with an additional clause
indicating that only v2 applied.

Signed-off-by: Tim Bird <tim.bird@sony.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
4 weeks agoMAINTAINERS: Add Chen Ridong as cpuset reviewer
Waiman Long [Wed, 14 Jan 2026 04:54:35 +0000 (23:54 -0500)] 
MAINTAINERS: Add Chen Ridong as cpuset reviewer

Add Chen Ridong as a reviewer for the cpuset cgroup subsystem.

Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Chen Ridong <chenridong@huaweicloud.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
4 weeks agoMerge tag 'drm-intel-fixes-2026-01-15' of https://gitlab.freedesktop.org/drm/i915...
Dave Airlie [Fri, 16 Jan 2026 05:45:40 +0000 (15:45 +1000)] 
Merge tag 'drm-intel-fixes-2026-01-15' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-fixes

drm/i915 fixes for v6.19-rc6:
- make 'guc_hw_reg_state' static

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patch.msgid.link/65bb05f7c8cbd3faf2350f979d4d47a395e5d372@intel.com
4 weeks agokernel: modules: Add SPDX license identifier to kmod.c
Tim Bird [Fri, 16 Jan 2026 00:04:31 +0000 (17:04 -0700)] 
kernel: modules: Add SPDX license identifier to kmod.c

Add a GPL-2.0 license identifier line for this file.

kmod.c was originally introduced in the kernel in February
of 1998 by Linus Torvalds - who was familiar with kernel
licensing at the time this was introduced.

Signed-off-by: Tim Bird <tim.bird@sony.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 weeks agoMerge tag 'ftrace-v6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
Linus Torvalds [Thu, 15 Jan 2026 23:13:05 +0000 (15:13 -0800)] 
Merge tag 'ftrace-v6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull ftrace fix from Steven Rostedt:

 - Fix allocation accounting on boot up

   The ftrace records for each function that ftrace can attach to is
   done in a group of pages. At boot up, the number of pages are
   calculated and allocated. After that, the pages are filled with data.
   It may allocate more than needed due to some functions not being
   recorded (because they are unused weak functions), this too is
   recorded.

   After the data is filled in, a check is made to make sure the right
   number of pages were allocated. But this was off due to the
   assumption that the same number of entries fit per every page.
   Because the size of an entry does not evenly divide into PAGE_SIZE,
   there is a rounding error when a large number of pages is allocated
   to hold the events. This causes the check to fail and triggers a
   warning.

   Fix the accounting by finding out how many pages are actually
   allocated from the functions that allocate them and use that to see
   if all the pages allocated were used and the ones not used are
   properly freed.

* tag 'ftrace-v6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ftrace: Do not over-allocate ftrace memory

4 weeks agosched/deadline: Use ENQUEUE_MOVE to allow priority change
Peter Zijlstra [Thu, 15 Jan 2026 08:27:22 +0000 (09:27 +0100)] 
sched/deadline: Use ENQUEUE_MOVE to allow priority change

Pierre reported hitting balance callback warnings for deadline tasks
after commit 6455ad5346c9 ("sched: Move sched_class::prio_changed()
into the change pattern").

It turns out that DEQUEUE_SAVE+ENQUEUE_RESTORE does not preserve DL
priority and subsequently trips a balance pass -- where one was not
expected.

From discussion with Juri and Luca, the purpose of this clause was to
deal with tasks new to DL and all those sites will have MOVE set (as
well as CLASS, but MOVE is move conservative at this point).

Per the previous patches MOVE is audited to always run the balance
callbacks, so switch enqueue_dl_entity() to use MOVE for this case.

Fixes: 6455ad5346c9 ("sched: Move sched_class::prio_changed() into the change pattern")
Reported-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Pierre Gondois <pierre.gondois@arm.com>
Tested-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://patch.msgid.link/20260114130528.GB831285@noisy.programming.kicks-ass.net