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

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Message-ID: <27366f94-67d4-4b73-b420-cacdbe9d603f@heusel.eu>
Date: Tue, 16 Sep 2025 18:46:06 +0200
From: Christian Heusel <christian@...sel.eu>
To: Naresh Kamboju <naresh.kamboju@...aro.org>
Cc: rust-for-linux@...r.kernel.org, 
	open list <linux-kernel@...r.kernel.org>, Linux Regressions <regressions@...ts.linux.dev>, 
	lkft-triage@...ts.linaro.org, 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: Re: next-20250915: error[E0425]: cannot find function
 `atomic_read_acquire` in crate `bindings`

On 25/09/16 09:56PM, Naresh Kamboju wrote:
> On Tue, 16 Sept 2025 at 11:17, Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
> >
> > 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`
> 
> Anders bisected this build regressions and found,
> 
> # first bad commit:
>  [eb57133305f61b612252382d0c1478bba7f57b67]
>  rust: sync: Add basic atomic operation mapping framework

Is this still an issue on next-20250916? As far as I can tell this has
been fixed, but now there is another rust build issue, see
https://lore.kernel.org/regressions/0fee48bb-7411-4414-b4e7-395a8c3d0f6c@heusel.eu/
for more information.

Cheers,
Chris

> 
> >
> > 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
> 
> - Naresh
> 

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