linux-kernel - next-20250915: error[E0425]: cannot find function `atomic_read

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Message-ID: <CA+G9fYtT7HNBM2XBbePeZ-Fw+ig7SJ+JE_NpQ1VuHR_TvAjX2w@mail.gmail.com>
Date: Tue, 16 Sep 2025 11:17:57 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: rust-for-linux@...r.kernel.org, open list <linux-kernel@...r.kernel.org>, 
	Linux Regressions <regressions@...ts.linux.dev>, lkft-triage@...ts.linaro.org
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Boqun Feng <boqun.feng@...il.com>, Peter Zijlstra <peterz@...radead.org>, 
	Alice Ryhl <aliceryhl@...gle.com>, Benno Lossin <lossin@...nel.org>, 
	Elle Rhumsaa <elle@...thered-steel.dev>, Dan Carpenter <dan.carpenter@...aro.org>, 
	Arnd Bergmann <arnd@...db.de>, Anders Roxell <anders.roxell@...aro.org>, 
	Ben Copeland <benjamin.copeland@...aro.org>
Subject: next-20250915: error[E0425]: cannot find function `atomic_read_acquire`
 in crate `bindings`

The following build warnings / errors noticed on the arm arm64 and x86_64
with rust config build on the Linux next-20250915 tag.

First seen on next-20250915
Good: next-20250912
Bad: next-20250915

Regression Analysis:
- New regression? yes
- Reproducibility? yes

* arm, build
  - rustclang-lkftconfig-kselftest
  - rustgcc-lkftconfig-kselftest

* arm64, build
  - rustclang-lkftconfig-kselftest
  - rustgcc-lkftconfig-kselftest

* x86_64, build
  - rustgcc-lkftconfig-kselftest
  - rustclang-nightly-lkftconfig-kselftest

Build regression: next-20250915: error[E0425]: cannot find function
`atomic_read_acquire` in crate `bindings`

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

## Build log
error[E0425]: cannot find function `atomic_read_acquire` in crate `bindings`
   --> rust/kernel/sync/atomic/internal.rs:124:37
    |
124 |                   $unsafe { bindings::[< $ctype _ $func >]($($c_arg,)*) }
    |                                       ^^^^^^^^^^^^^^^^^^^^ not
found in `bindings`
...
201 | / declare_and_impl_atomic_methods!(
202 | |     /// Basic atomic operations
203 | |     pub trait AtomicBasicOps {
204 | |         /// Atomic read (load).
...   |
216 | | );
    | |_- in this macro invocation
    |
    = note: this error originates in the macro `impl_atomic_method`
which comes from the expansion of the macro
`declare_and_impl_atomic_methods` (in Nightly builds, run with -Z
macro-backtrace for more info)
error: aborting due to 34 previous errors

For more information about this error, try `rustc --explain E0425`.
make[3]: *** [rust/Makefile:553: rust/kernel.o] Error 1


## Source
* Kernel version: 6.17.0-rc6
* Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
* Git describe: 6.17.0-rc6-next-20250915
* Git commit: c3067c2c38316c3ef013636c93daa285ee6aaa2e
* Architectures: arm, arm64 and x86_64
* Toolchains: gcc (Debian 15.2.0-3) 15.2.0
* Kconfigs: rust config

## Build
* Build log: https://qa-reports.linaro.org/api/testruns/29894207/log_file/
* Build details:
https://regressions.linaro.org/lkft/linux-next-master/next-20250915/build/rustgcc-lkftconfig-kselftest/
* Build plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/builds/32l4UDzp0FMtS73JeG3kWpcoQrm
* Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/32l4UDzp0FMtS73JeG3kWpcoQrm/
* Kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/32l4UDzp0FMtS73JeG3kWpcoQrm/config

--
Linaro LKFT