linux-kernel - [peterz-queue:locking/core 6/7] kernel/locking/lockdep.c:6017:57: error: use of undeclared identifier 'offset'

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Message-ID: <202202121417.yBYvheMJ-lkp@intel.com>
Date:   Sat, 12 Feb 2022 14:28:33 +0800
From:   kernel test robot <lkp@...el.com>
To:     Waiman Long <longman@...hat.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>
Subject: [peterz-queue:locking/core 6/7] kernel/locking/lockdep.c:6017:57:
 error: use of undeclared identifier 'offset'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/core
head:   2300c94a775d0f2a733ef11285cc0abe8126edf6
commit: 065af96d73df2653a2d7da572cf8ba57218479ef [6/7] locking/lockdep: Cleanup reinit_class()
config: hexagon-buildonly-randconfig-r006-20220211 (https://download.01.org/0day-ci/archive/20220212/202202121417.yBYvheMJ-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c7eb84634519e6497be42f5fe323f9a04ed67127)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=065af96d73df2653a2d7da572cf8ba57218479ef
        git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
        git fetch --no-tags peterz-queue locking/core
        git checkout 065af96d73df2653a2d7da572cf8ba57218479ef
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> kernel/locking/lockdep.c:6017:57: error: use of undeclared identifier 'offset'
           BUILD_BUG_ON(offsetof(struct lock_class, lock_entry) > offset);
                                                                  ^
   kernel/locking/lockdep.c:6018:58: error: use of undeclared identifier 'offset'
           BUILD_BUG_ON(offsetof(struct lock_class, locks_after) > offset);
                                                                   ^
   kernel/locking/lockdep.c:6019:59: error: use of undeclared identifier 'offset'
           BUILD_BUG_ON(offsetof(struct lock_class, locks_before) > offset);
                                                                    ^
   3 errors generated.


vim +/offset +6017 kernel/locking/lockdep.c

  6011	
  6012	static void reinit_class(struct lock_class *class)
  6013	{
  6014		WARN_ON_ONCE(!class->lock_entry.next);
  6015		WARN_ON_ONCE(!list_empty(&class->locks_after));
  6016		WARN_ON_ONCE(!list_empty(&class->locks_before));
> 6017		BUILD_BUG_ON(offsetof(struct lock_class, lock_entry) > offset);
  6018		BUILD_BUG_ON(offsetof(struct lock_class, locks_after) > offset);
  6019		BUILD_BUG_ON(offsetof(struct lock_class, locks_before) > offset);
  6020		memset_startat(class, 0, key);
  6021	}
  6022	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org