Hi Alex, kernel test robot noticed the following build errors: [auto build test ERROR on brauner-vfs/vfs.all] [also build test ERROR on linus/master v6.16-rc6 next-20250716] [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/Alex/fs-Remove-obsolete-logic-in-i_size_read-write/20250716-205449 base: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.all patch link: https://lore.kernel.org/r/20250716125304.1189790-1-alex.fcyrx%40gmail.com patch subject: [PATCH] fs: Remove obsolete logic in i_size_read/write config: i386-buildonly-randconfig-001-20250717 (https://download.01.org/0day-ci/archive/20250717/202507171216.eCtc7zAl-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250717/202507171216.eCtc7zAl-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202507171216.eCtc7zAl-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from <command-line>: In function 'i_size_read', inlined from 'do_shmat' at ipc/shm.c:1614:9: >> include/linux/compiler_types.h:568:45: error: call to '__compiletime_assert_451' declared with attribute error: Need native word sized stores/loads for atomicity. 568 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:549:25: note: in definition of macro '__compiletime_assert' 549 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:568:9: note: in expansion of macro '_compiletime_assert' 568 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:571:9: note: in expansion of macro 'compiletime_assert' 571 | compiletime_assert(__native_word(t), \ | ^~~~~~~~~~~~~~~~~~ arch/x86/include/asm/barrier.h:69:9: note: in expansion of macro 'compiletime_assert_atomic_type' 69 | compiletime_assert_atomic_type(*p); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/asm-generic/barrier.h:176:29: note: in expansion of macro '__smp_load_acquire' 176 | #define smp_load_acquire(p) __smp_load_acquire(p) | ^~~~~~~~~~~~~~~~~~ include/linux/fs.h:960:16: note: in expansion of macro 'smp_load_acquire' 960 | return smp_load_acquire(&inode->i_size); | ^~~~~~~~~~~~~~~~ In function 'i_size_read', inlined from 'ksys_shmdt' at ipc/shm.c:1783:11: >> include/linux/compiler_types.h:568:45: error: call to '__compiletime_assert_451' declared with attribute error: Need native word sized stores/loads for atomicity. 568 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:549:25: note: in definition of macro '__compiletime_assert' 549 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:568:9: note: in expansion of macro '_compiletime_assert' 568 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:571:9: note: in expansion of macro 'compiletime_assert' 571 | compiletime_assert(__native_word(t), \ | ^~~~~~~~~~~~~~~~~~ arch/x86/include/asm/barrier.h:69:9: note: in expansion of macro 'compiletime_assert_atomic_type' 69 | compiletime_assert_atomic_type(*p); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/asm-generic/barrier.h:176:29: note: in expansion of macro '__smp_load_acquire' 176 | #define smp_load_acquire(p) __smp_load_acquire(p) | ^~~~~~~~~~~~~~~~~~ include/linux/fs.h:960:16: note: in expansion of macro 'smp_load_acquire' 960 | return smp_load_acquire(&inode->i_size); | ^~~~~~~~~~~~~~~~ vim +/__compiletime_assert_451 +568 include/linux/compiler_types.h eb5c2d4b45e3d2 Will Deacon 2020-07-21 554 eb5c2d4b45e3d2 Will Deacon 2020-07-21 555 #define _compiletime_assert(condition, msg, prefix, suffix) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 556 __compiletime_assert(condition, msg, prefix, suffix) eb5c2d4b45e3d2 Will Deacon 2020-07-21 557 eb5c2d4b45e3d2 Will Deacon 2020-07-21 558 /** eb5c2d4b45e3d2 Will Deacon 2020-07-21 559 * compiletime_assert - break build and emit msg if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 560 * @condition: a compile-time constant condition to check eb5c2d4b45e3d2 Will Deacon 2020-07-21 561 * @msg: a message to emit if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 562 * eb5c2d4b45e3d2 Will Deacon 2020-07-21 563 * In tradition of POSIX assert, this macro will break the build if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 564 * supplied condition is *false*, emitting the supplied error message if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 565 * compiler has support to do so. eb5c2d4b45e3d2 Will Deacon 2020-07-21 566 */ eb5c2d4b45e3d2 Will Deacon 2020-07-21 567 #define compiletime_assert(condition, msg) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 @568 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) eb5c2d4b45e3d2 Will Deacon 2020-07-21 569 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
