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Message-ID: <202502090624.WfIB0TP5-lkp@intel.com>
Date: Sun, 9 Feb 2025 06:50:10 +0800
From: kernel test robot <lkp@...el.com>
To: "Darrick J. Wong" <djwong@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Christoph Hellwig <hch@....de>
Subject: include/linux/build_bug.h:78:41: error: static assertion failed:
"XFS: sizeof(struct xfs_attr_sf_entry) is wrong, expected 3"
Hi Darrick,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 8f6629c004b193d23612641c3607e785819e97ab
commit: 13877bc79d81354c53e91f3c86ac0f7bafe3ba7b xfs: port ondisk structure checks from xfs/122 to the kernel
date: 3 months ago
config: arm-randconfig-002-20250207 (https://download.01.org/0day-ci/archive/20250209/202502090624.WfIB0TP5-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250209/202502090624.WfIB0TP5-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/202502090624.WfIB0TP5-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/bitfield.h:10,
from include/linux/fortify-string.h:5,
from include/linux/string.h:390,
from include/linux/uuid.h:11,
from fs/xfs/xfs_linux.h:10,
from fs/xfs/xfs.h:26,
from fs/xfs/xfs_super.c:7:
fs/xfs/libxfs/xfs_ondisk.h: In function 'xfs_check_ondisk_structs':
>> include/linux/build_bug.h:78:41: error: static assertion failed: "XFS: sizeof(struct xfs_attr_sf_entry) is wrong, expected 3"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
fs/xfs/libxfs/xfs_ondisk.h:10:9: note: in expansion of macro 'static_assert'
10 | static_assert(sizeof(structname) == (size), \
| ^~~~~~~~~~~~~
fs/xfs/libxfs/xfs_ondisk.h:133:9: note: in expansion of macro 'XFS_CHECK_STRUCT_SIZE'
133 | XFS_CHECK_STRUCT_SIZE(struct xfs_attr_sf_entry, 3);
| ^~~~~~~~~~~~~~~~~~~~~
>> include/linux/build_bug.h:78:41: error: static assertion failed: "XFS: sizeof(struct xfs_dir2_data_unused) is wrong, expected 6"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
fs/xfs/libxfs/xfs_ondisk.h:10:9: note: in expansion of macro 'static_assert'
10 | static_assert(sizeof(structname) == (size), \
| ^~~~~~~~~~~~~
fs/xfs/libxfs/xfs_ondisk.h:136:9: note: in expansion of macro 'XFS_CHECK_STRUCT_SIZE'
136 | XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_data_unused, 6);
| ^~~~~~~~~~~~~~~~~~~~~
vim +78 include/linux/build_bug.h
bc6245e5efd70c Ian Abbott 2017-07-10 60
6bab69c65013be Rasmus Villemoes 2019-03-07 61 /**
6bab69c65013be Rasmus Villemoes 2019-03-07 62 * static_assert - check integer constant expression at build time
6bab69c65013be Rasmus Villemoes 2019-03-07 63 *
6bab69c65013be Rasmus Villemoes 2019-03-07 64 * static_assert() is a wrapper for the C11 _Static_assert, with a
6bab69c65013be Rasmus Villemoes 2019-03-07 65 * little macro magic to make the message optional (defaulting to the
6bab69c65013be Rasmus Villemoes 2019-03-07 66 * stringification of the tested expression).
6bab69c65013be Rasmus Villemoes 2019-03-07 67 *
6bab69c65013be Rasmus Villemoes 2019-03-07 68 * Contrary to BUILD_BUG_ON(), static_assert() can be used at global
6bab69c65013be Rasmus Villemoes 2019-03-07 69 * scope, but requires the expression to be an integer constant
6bab69c65013be Rasmus Villemoes 2019-03-07 70 * expression (i.e., it is not enough that __builtin_constant_p() is
6bab69c65013be Rasmus Villemoes 2019-03-07 71 * true for expr).
6bab69c65013be Rasmus Villemoes 2019-03-07 72 *
6bab69c65013be Rasmus Villemoes 2019-03-07 73 * Also note that BUILD_BUG_ON() fails the build if the condition is
6bab69c65013be Rasmus Villemoes 2019-03-07 74 * true, while static_assert() fails the build if the expression is
6bab69c65013be Rasmus Villemoes 2019-03-07 75 * false.
6bab69c65013be Rasmus Villemoes 2019-03-07 76 */
6bab69c65013be Rasmus Villemoes 2019-03-07 77 #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
6bab69c65013be Rasmus Villemoes 2019-03-07 @78 #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
6bab69c65013be Rasmus Villemoes 2019-03-07 79
07a368b3f55a79 Maxim Levitsky 2022-10-25 80
:::::: The code at line 78 was first introduced by commit
:::::: 6bab69c65013bed5fce9f101a64a84d0385b3946 build_bug.h: add wrapper for _Static_assert
:::::: TO: Rasmus Villemoes <linux@...musvillemoes.dk>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
--
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