Hi Will, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: e0756cfc7d7cd08c98a53b6009c091a3f6a50be6 commit: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h date: 7 months ago config: arm-randconfig-s032-20210209 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-215-g0fb77bb6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm 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>: net/smc/smc_llc.c: In function 'smc_llc_add_pending_send': include/linux/compiler_types.h:338:38: error: call to '__compiletime_assert_602' declared with attribute error: must increase SMC_WR_BUF_SIZE to at least sizeof(struct smc_llc_msg) 338 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:319:4: note: in definition of macro '__compiletime_assert' 319 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:338:2: note: in expansion of macro '_compiletime_assert' 338 | _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) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_llc.c:348:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 348 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ 338 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:319:4: note: in definition of macro '__compiletime_assert' 319 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:338:2: note: in expansion of macro '_compiletime_assert' 338 | _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) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_llc.c:351:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 351 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ -- In file included from <command-line>: In function 'smc_cdc_add_pending_send', inlined from 'smc_cdc_msg_send' at net/smc/smc_cdc.c:101:2: 338 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:319:4: note: in definition of macro '__compiletime_assert' 319 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:338:2: note: in expansion of macro '_compiletime_assert' 338 | _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) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_cdc.c:78:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 78 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ 338 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:319:4: note: in definition of macro '__compiletime_assert' 319 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:338:2: note: in expansion of macro '_compiletime_assert' 338 | _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) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_cdc.c:81:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 81 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ vim +/__compiletime_assert_603 +338 include/linux/compiler_types.h 324 325 #define _compiletime_assert(condition, msg, prefix, suffix) \ 326 __compiletime_assert(condition, msg, prefix, suffix) 327 328 /** 329 * compiletime_assert - break build and emit msg if condition is false 330 * @condition: a compile-time constant condition to check 331 * @msg: a message to emit if condition is false 332 * 333 * In tradition of POSIX assert, this macro will break the build if the 334 * supplied condition is *false*, emitting the supplied error message if the 335 * compiler has support to do so. 336 */ 337 #define compiletime_assert(condition, msg) \ 339 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org