tree: https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git ceph-fscrypt head: 6b3ebb239173120d2d62579b9d2a27a24c444a45 commit: 0737a8ffbc71d0e0334b729d50e8401cb8c3a32b [32/39] ceph: align data in pages in ceph_sync_write config: c6x-randconfig-r011-20210209 (attached as .config) compiler: c6x-elf-gcc (GCC) 9.3.0 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/jlayton/linux.git/commit/... git remote add jlayton https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git git fetch --no-tags jlayton ceph-fscrypt git checkout 0737a8ffbc71d0e0334b729d50e8401cb8c3a32b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=c6x If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from <command-line>: 298 | do { \ | ^~ include/linux/compiler_types.h:308:2: note: in expansion of macro '__compiletime_assert' 308 | __compiletime_assert(condition, msg, prefix, suffix) | ^~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) | ^~~~~~~~~~~~~~~~ fs/ceph/file.c:27:1: note: in expansion of macro 'BUILD_BUG_ON' 27 | BUILD_BUG_ON(CEPH_FSCRYPT_BLOCK_SHIFT > PAGE_SHIFT); | ^~~~~~~~~~~~ 302 | } while (0) | ^~~~~ include/linux/compiler_types.h:308:2: note: in expansion of macro '__compiletime_assert' 308 | __compiletime_assert(condition, msg, prefix, suffix) | ^~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) | ^~~~~~~~~~~~~~~~ fs/ceph/file.c:27:1: note: in expansion of macro 'BUILD_BUG_ON' 27 | BUILD_BUG_ON(CEPH_FSCRYPT_BLOCK_SHIFT > PAGE_SHIFT); | ^~~~~~~~~~~~ vim +298 include/linux/compiler_types.h eb5c2d4b45e3d2 Will Deacon 2020-07-21 295 eb5c2d4b45e3d2 Will Deacon 2020-07-21 296 #ifdef __OPTIMIZE__ eb5c2d4b45e3d2 Will Deacon 2020-07-21 297 # define __compiletime_assert(condition, msg, prefix, suffix) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 @298 do { \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 299 extern void prefix ## suffix(void) __compiletime_error(msg); \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 300 if (!(condition)) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 301 prefix ## suffix(); \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 @302 } while (0) eb5c2d4b45e3d2 Will Deacon 2020-07-21 303 #else eb5c2d4b45e3d2 Will Deacon 2020-07-21 304 # define __compiletime_assert(condition, msg, prefix, suffix) do { } while (0) eb5c2d4b45e3d2 Will Deacon 2020-07-21 305 #endif eb5c2d4b45e3d2 Will Deacon 2020-07-21 306 :::::: The code at line 298 was first introduced by commit :::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h :::::: TO: Will Deacon <will(a)kernel.org&gt; :::::: CC: Will Deacon <will(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org