Hi Vincenzo, I love your patch! Yet something to improve: [auto build test ERROR on xfs-linux/for-next] [also build test ERROR on djwong-xfs/djwong-devel v5.5-rc5 next-20200110] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Vincenzo-Frascino/xfs-Fix-xfs_dir2_sf_entry_t-size-check/20200110-144608 base: https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git for-next config: x86_64-lkp (attached as .config) compiler: gcc-7 (Debian 7.5.0-3) 7.5.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): In file included from include/linux/string.h:6:0, from include/linux/uuid.h:12, from fs/xfs/xfs_linux.h:10, from fs/xfs/xfs.h:22, from fs/xfs/xfs_super.c:7: In function 'xfs_check_ondisk_structs', inlined from 'init_xfs_fs' at fs/xfs/xfs_super.c:2025:2: >> include/linux/compiler.h:350:38: error: call to '__compiletime_assert_107' declared with attribute error: XFS: sizeof(xfs_dir2_sf_entry_t) is wrong, expected 4 _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ include/linux/compiler.h:331:4: note: in definition of macro '__compiletime_assert' prefix ## suffix(); \ ^~~~~~ include/linux/compiler.h:350:2: note: in expansion of macro '_compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~~~~~~~~~~~~~~~ fs/xfs/xfs_ondisk.h:10:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' BUILD_BUG_ON_MSG(sizeof(structname) != (size), "XFS: sizeof(" \ ^~~~~~~~~~~~~~~~ fs/xfs/xfs_ondisk.h:107:2: note: in expansion of macro 'XFS_CHECK_STRUCT_SIZE' XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_entry_t, 4); ^~~~~~~~~~~~~~~~~~~~~ -- In file included from include/linux/string.h:6:0, from include/linux/uuid.h:12, from fs//xfs/xfs_linux.h:10, from fs//xfs/xfs.h:22, from fs//xfs/xfs_super.c:7: In function 'xfs_check_ondisk_structs', inlined from 'init_xfs_fs' at fs//xfs/xfs_super.c:2025:2: >> include/linux/compiler.h:350:38: error: call to '__compiletime_assert_107' declared with attribute error: XFS: sizeof(xfs_dir2_sf_entry_t) is wrong, expected 4 _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ include/linux/compiler.h:331:4: note: in definition of macro '__compiletime_assert' prefix ## suffix(); \ ^~~~~~ include/linux/compiler.h:350:2: note: in expansion of macro '_compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~~~~~~~~~~~~~~~ fs//xfs/xfs_ondisk.h:10:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' BUILD_BUG_ON_MSG(sizeof(structname) != (size), "XFS: sizeof(" \ ^~~~~~~~~~~~~~~~ fs//xfs/xfs_ondisk.h:107:2: note: in expansion of macro 'XFS_CHECK_STRUCT_SIZE' XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_entry_t, 4); ^~~~~~~~~~~~~~~~~~~~~ vim +/__compiletime_assert_107 +350 include/linux/compiler.h 9a8ab1c39970a4 Daniel Santos 2013-02-21 336 9a8ab1c39970a4 Daniel Santos 2013-02-21 337 #define _compiletime_assert(condition, msg, prefix, suffix) \ 9a8ab1c39970a4 Daniel Santos 2013-02-21 338 __compiletime_assert(condition, msg, prefix, suffix) 9a8ab1c39970a4 Daniel Santos 2013-02-21 339 9a8ab1c39970a4 Daniel Santos 2013-02-21 340 /** 9a8ab1c39970a4 Daniel Santos 2013-02-21 341 * compiletime_assert - break build and emit msg if condition is false 9a8ab1c39970a4 Daniel Santos 2013-02-21 342 * @condition: a compile-time constant condition to check 9a8ab1c39970a4 Daniel Santos 2013-02-21 343 * @msg: a message to emit if condition is false 9a8ab1c39970a4 Daniel Santos 2013-02-21 344 * 9a8ab1c39970a4 Daniel Santos 2013-02-21 345 * In tradition of POSIX assert, this macro will break the build if the 9a8ab1c39970a4 Daniel Santos 2013-02-21 346 * supplied condition is *false*, emitting the supplied error message if the 9a8ab1c39970a4 Daniel Santos 2013-02-21 347 * compiler has support to do so. 9a8ab1c39970a4 Daniel Santos 2013-02-21 348 */ 9a8ab1c39970a4 Daniel Santos 2013-02-21 349 #define compiletime_assert(condition, msg) \ 9a8ab1c39970a4 Daniel Santos 2013-02-21 @350 _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) 9a8ab1c39970a4 Daniel Santos 2013-02-21 351 :::::: The code at line 350 was first introduced by commit :::::: 9a8ab1c39970a4938a72d94e6fd13be88a797590 bug.h, compiler.h: introduce compiletime_assert & BUILD_BUG_ON_MSG :::::: TO: Daniel Santos :::::: CC: Linus Torvalds --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation