linux-kernel - Re: [PATCH v9 5/7] rust: ww_mutex: add Mutex, AcquireCtx and MutexGuard

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Message-ID: <202601030632.SukxzGNs-lkp@intel.com>
Date: Sat, 3 Jan 2026 06:40:34 +0100
From: kernel test robot <lkp@...el.com>
To: Onur Özkan <work@...rozkan.dev>,
	rust-for-linux@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, lossin@...nel.org, lyude@...hat.com,
	ojeda@...nel.org, alex.gaynor@...il.com, boqun.feng@...il.com,
	gary@...yguo.net, a.hindborg@...nel.org, aliceryhl@...gle.com,
	tmgross@...ch.edu, dakr@...nel.org, peterz@...radead.org,
	mingo@...hat.com, will@...nel.org, longman@...hat.com,
	felipe_life@...e.com, daniel@...lak.dev,
	daniel.almeida@...labora.com, thomas.hellstrom@...ux.intel.com,
	linux-kernel@...r.kernel.org,
	Onur Özkan <work@...rozkan.dev>
Subject: Re: [PATCH v9 5/7] rust: ww_mutex: add Mutex, AcquireCtx and
 MutexGuard

Hi Onur,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/locking/core]
[also build test ERROR on rust/rust-next linus/master v6.16-rc1 next-20251219]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Onur-zkan/rust-add-C-wrappers-for-ww_mutex-inline-functions/20260103-021353
base:   tip/locking/core
patch link:    https://lore.kernel.org/r/20260102175302.194435-6-work%40onurozkan.dev
patch subject: [PATCH v9 5/7] rust: ww_mutex: add Mutex, AcquireCtx and MutexGuard
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20260103/202601030632.SukxzGNs-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260103/202601030632.SukxzGNs-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601030632.SukxzGNs-lkp@intel.com/

All errors (new ones prefixed by >>):

   PATH=/opt/cross/clang-20/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
   INFO PATH=/opt/cross/rustc-1.88.0-bindgen-0.72.1/cargo/bin:/opt/cross/clang-20/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
   /usr/bin/timeout -k 100 12h /usr/bin/make KCFLAGS= -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef W=1 --keep-going LLVM=1 -j32 -C source O=/kbuild/obj/consumer/x86_64-rhel-9.4-rust ARCH=x86_64 SHELL=/bin/bash rustfmtcheck
   make: Entering directory '/kbuild/src/consumer'
   make[1]: Entering directory '/kbuild/obj/consumer/x86_64-rhel-9.4-rust'
>> error: expected item, found `>>`
   --> rust/kernel/sync/lock/ww_mutex.rs:440:1
   |
   440 | >>>>>>> 90f935950ff8 (rust: ww_mutex: add Mutex, AcquireCtx and MutexGuard)
   | ^^ expected item
   |
   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
--
>> error: expected item, found `>>`
   --> rust/kernel/sync/lock/ww_mutex.rs:440:1
   |
   440 | >>>>>>> 90f935950ff8 (rust: ww_mutex: add Mutex, AcquireCtx and MutexGuard)
   | ^^ expected item
   |
   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
--
   Error writing files: failed to resolve mod `ww_mutex`: cannot parse rust/kernel/sync/lock/ww_mutex.rs
>> error: expected item, found `>>`
   --> rust/kernel/sync/lock/ww_mutex.rs:440:1
   |
   440 | >>>>>>> 90f935950ff8 (rust: ww_mutex: add Mutex, AcquireCtx and MutexGuard)
   | ^^ expected item
   |
   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki