[brauner-vfs:vfs.all 11/11] fs/fcntl.c:1172:2: error: call to '__compiletime_assert_384' declared with 'error' attribute: BUILD_BUG_ON failed: 21 - 1 != HWEIGHT32( (VALID_OPENAT2_FLAGS & ~(O_NONBLOCK | O_NDELAY)) | __FMODE_EXEC)

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "__compiletime_assert_NNN"
:::::: 

BCC: lkp@intel.com
CC: llvm@lists.linux.dev
CC: oe-kbuild-all@lists.linux.dev
CC: Christian Brauner <christianvanbrauner@gmail.com>
TO: Christian Brauner <brauner@kernel.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.all
head:   1202b9c177076b8c00ba826717a8d7023e4c8f98
commit: 1202b9c177076b8c00ba826717a8d7023e4c8f98 [11/11] Merge branch 'vfs-7.2.misc' into vfs.all
:::::: branch date: 8 hours ago
:::::: commit date: 8 hours ago
config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20260514/202605142356.aUnJ1v8s-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260514/202605142356.aUnJ1v8s-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@intel.com>
| Closes: https://lore.kernel.org/r/202605142356.aUnJ1v8s-lkp@intel.com/

All errors (new ones prefixed by >>):

>> fs/fcntl.c:1172:2: error: call to '__compiletime_assert_384' declared with 'error' attribute: BUILD_BUG_ON failed: 21 - 1 != HWEIGHT32( (VALID_OPENAT2_FLAGS & ~(O_NONBLOCK | O_NDELAY)) | __FMODE_EXEC)
    1172 |         BUILD_BUG_ON(21 - 1 /* for O_RDONLY being 0 */ !=
         |         ^
   include/linux/build_bug.h:51:2: note: expanded from macro 'BUILD_BUG_ON'
      51 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^
   include/linux/build_bug.h:40:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
      40 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^
   include/linux/compiler_types.h:699:2: note: expanded from macro 'compiletime_assert'
     699 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^
   include/linux/compiler_types.h:687:2: note: expanded from macro '_compiletime_assert'
     687 |         __compiletime_assert(condition, msg, prefix, suffix)
         |         ^
   include/linux/compiler_types.h:680:4: note: expanded from macro '__compiletime_assert'
     680 |                         prefix ## suffix();                             \
         |                         ^
   <scratch space>:37:1: note: expanded from here
      37 | __compiletime_assert_384
         | ^
   1 error generated.


vim +1172 fs/fcntl.c

^1da177e4c3f415 Linus Torvalds    2005-04-16  1164  
454eedb8901da89 Wu Fengguang      2010-08-10  1165  static int __init fcntl_init(void)
^1da177e4c3f415 Linus Torvalds    2005-04-16  1166  {
3ab04d5cf9736b7 James Bottomley   2010-09-09  1167  	/*
3ab04d5cf9736b7 James Bottomley   2010-09-09  1168  	 * Please add new bits here to ensure allocation uniqueness.
3ab04d5cf9736b7 James Bottomley   2010-09-09  1169  	 * Exceptions: O_NONBLOCK is a two bit define on parisc; O_NDELAY
3ab04d5cf9736b7 James Bottomley   2010-09-09  1170  	 * is defined as O_NONBLOCK on some platforms and not on others.
3ab04d5cf9736b7 James Bottomley   2010-09-09  1171  	 */
3adfed795a99d74 Dorjoy Chowdhury  2026-03-28 @1172  	BUILD_BUG_ON(21 - 1 /* for O_RDONLY being 0 */ !=
80f18379a7c350c Christoph Hellwig 2017-04-27  1173  		HWEIGHT32(
3adfed795a99d74 Dorjoy Chowdhury  2026-03-28  1174  			(VALID_OPENAT2_FLAGS & ~(O_NONBLOCK | O_NDELAY)) |
ebe559609d7829b Al Viro           2024-11-15  1175  			__FMODE_EXEC));
454eedb8901da89 Wu Fengguang      2010-08-10  1176  
^1da177e4c3f415 Linus Torvalds    2005-04-16  1177  	fasync_cache = kmem_cache_create("fasync_cache",
839d68206de869b Vasily Averin     2021-09-02  1178  					 sizeof(struct fasync_struct), 0,
839d68206de869b Vasily Averin     2021-09-02  1179  					 SLAB_PANIC | SLAB_ACCOUNT, NULL);
^1da177e4c3f415 Linus Torvalds    2005-04-16  1180  	return 0;
^1da177e4c3f415 Linus Torvalds    2005-04-16  1181  }
^1da177e4c3f415 Linus Torvalds    2005-04-16  1182  

:::::: The code at line 1172 was first introduced by commit
:::::: 3adfed795a99d740cdb3ed71eae6ef03ce5431c8 openat2: new OPENAT2_REGULAR flag support

:::::: TO: Dorjoy Chowdhury <dorjoychy111@gmail.com>
:::::: CC: Christian Brauner <brauner@kernel.org>

--
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https://github.com/intel/lkp-tests/wiki