linux-kernel - Re: [PATCH v8 5/6] rust: ww_mutex: add Mutex, AcquireCtx and MutexGuard

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Message-ID: <202512020943.whFrDsXx-lkp@intel.com>
Date: Tue, 2 Dec 2025 09:49:34 +0800
From: kernel test robot <lkp@...el.com>
To: Onur Özkan <work@...rozkan.dev>,
	rust-for-linux@...r.kernel.org
Cc: llvm@...ts.linux.dev, 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 v8 5/6] 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 v6.18 next-20251201]
[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/20251201-184152
base:   tip/locking/core
patch link:    https://lore.kernel.org/r/20251201102855.4413-6-work%40onurozkan.dev
patch subject: [PATCH v8 5/6] rust: ww_mutex: add Mutex, AcquireCtx and MutexGuard
config: arm64-randconfig-001-20251202 (https://download.01.org/0day-ci/archive/20251202/202512020943.whFrDsXx-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project b3428bb966f1de8aa48375ffee0eba04ede133b7)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251202/202512020943.whFrDsXx-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/202512020943.whFrDsXx-lkp@intel.com/

All errors (new ones prefixed by >>):

>> error[E0609]: no field `ww_class` on type `ww_acquire_ctx`
   --> rust/kernel/sync/lock/ww_mutex/acquire_ctx.rs:110:41
   |
   110 |         let class_ptr = unsafe { (*ctx).ww_class };
   |                                         ^^^^^^^^ unknown field
   |
   = note: available field is: `_address`
--
>> error[E0609]: no field `ww_class` on type `ww_acquire_ctx`
   --> rust/kernel/sync/lock/ww_mutex.rs:252:49
   |
   252 |             let ctx_class = unsafe { (*ctx_ptr).ww_class };
   |                                                 ^^^^^^^^ unknown field
   |
   = note: available field is: `_address`

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