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

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Message-ID: <aMpma-2UokTo0u9j@stanley.mountain>
Date: Wed, 17 Sep 2025 10:42:35 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Christian Heusel <christian@...sel.eu>
Cc: Naresh Kamboju <naresh.kamboju@...aro.org>,
	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>,
	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 Tue, Sep 16, 2025 at 06:46:06PM +0200, Christian Heusel wrote:
> 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
> 

next-20250916 still fails but with a different Rust issue.

$ make
  SYNC    include/config/auto.conf
  HOSTCC  scripts/basic/fixdep
  CALL    scripts/checksyscalls.sh
  DESCEND objtool
  INSTALL libsubcmd_headers
  RUSTC L rust/kernel.o
error: expected one of `,` or `}`, found `;`
  --> rust/kernel/block/mq/gen_disk.rs:12:23
   |
12 |     fmt::{self, Write};
   |                       ^
   |                       |
   |                       expected one of `,` or `}`
   |                       help: missing `,`

error: aborting due to 1 previous error

make[2]: *** [rust/Makefile:553: rust/kernel.o] Error 1
make[1]: *** [/home/dcarpenter/progs/kernel/devel/Makefile:1286: prepare] Error 2
make: *** [Makefile:248: __sub-make] Error 2

regards,
dan carpenter