linux-kernel - Re: [PATCH v6 2/2] locking/lockdep: Test no new string literal is created in lockdep_set

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Message-ID: <202408270559.rym5UAv9-lkp@intel.com>
Date: Tue, 27 Aug 2024 06:07:36 +0800
From: kernel test robot <lkp@...el.com>
To: Ahmed Ehab <bottaawesome633@...il.com>, linux-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
	Waiman Long <longman@...hat.com>, Boqun Feng <boqun.feng@...il.com>,
	linux-ext4@...r.kernel.org, syzkaller@...glegroups.com
Subject: Re: [PATCH v6 2/2] locking/lockdep: Test no new string literal is
 created in lockdep_set_subclass()

Hi Ahmed,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/locking/core]
[also build test ERROR on tip/master arm-perf/for-next/perf linus/master tip/auto-latest v6.11-rc5 next-20240826]
[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/Ahmed-Ehab/locking-lockdep-Test-no-new-string-literal-is-created-in-lockdep_set_subclass/20240826-145215
base:   tip/locking/core
patch link:    https://lore.kernel.org/r/20240824221031.7751-2-bottaawesome633%40gmail.com
patch subject: [PATCH v6 2/2] locking/lockdep: Test no new string literal is created in lockdep_set_subclass()
config: i386-buildonly-randconfig-003-20240827 (https://download.01.org/0day-ci/archive/20240827/202408270559.rym5UAv9-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408270559.rym5UAv9-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/202408270559.rym5UAv9-lkp@intel.com/

All errors (new ones prefixed by >>):

   lib/locking-selftest.c: In function 'lock_class_subclass_X1':
>> lib/locking-selftest.c:2715:60: error: 'struct rw_semaphore' has no member named 'dep_map'
    2715 |         const char *name_before_setting_subclass = rwsem_X1.dep_map.name;
         |                                                            ^
   lib/locking-selftest.c:2719:47: error: 'struct rw_semaphore' has no member named 'dep_map'
    2719 |         name_after_setting_subclass = rwsem_X1.dep_map.name;
         |                                               ^


vim +2715 lib/locking-selftest.c

  2712	
  2713	static void lock_class_subclass_X1(void)
  2714	{
> 2715		const char *name_before_setting_subclass = rwsem_X1.dep_map.name;
  2716		const char *name_after_setting_subclass;
  2717	
  2718		lockdep_set_subclass(&rwsem_X1, 1);
  2719		name_after_setting_subclass = rwsem_X1.dep_map.name;
  2720		DEBUG_LOCKS_WARN_ON(name_before_setting_subclass != name_after_setting_subclass);
  2721	}
  2722	

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