Hi Andrii, I love your patch! Yet something to improve: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Andrii-Nakryiko/bpf-factor-out-fetching-basic-kfunc-metadata/20230308-115539 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20230308035416.2591326-5-andrii%40kernel.org patch subject: [PATCH v4 bpf-next 4/8] bpf: implement number iterator config: nios2-randconfig-r001-20230306 (https://download.01.org/0day-ci/archive/20230308/202303082250.AUFm2qRJ-lkp@xxxxxxxxx/config) compiler: nios2-linux-gcc (GCC) 12.1.0 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://github.com/intel-lab-lkp/linux/commit/19acf9ca01e2927a29d3235b3aa73598430dcb70 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Andrii-Nakryiko/bpf-factor-out-fetching-basic-kfunc-metadata/20230308-115539 git checkout 19acf9ca01e2927a29d3235b3aa73598430dcb70 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=nios2 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=nios2 SHELL=/bin/bash kernel/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303082250.AUFm2qRJ-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from <command-line>: kernel/bpf/bpf_iter.c: In function 'bpf_iter_num_new': >> include/linux/compiler_types.h:399:45: error: call to '__compiletime_assert_426' declared with attribute error: BUILD_BUG_ON failed: __alignof__(struct bpf_iter_num_kern) != __alignof__(struct bpf_iter_num) 399 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:380:25: note: in definition of macro '__compiletime_assert' 380 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:399:9: note: in expansion of macro '_compiletime_assert' 399 | _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:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG' 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) | ^~~~~~~~~~~~~~~~ kernel/bpf/bpf_iter.c:794:9: note: in expansion of macro 'BUILD_BUG_ON' 794 | BUILD_BUG_ON(__alignof__(struct bpf_iter_num_kern) != __alignof__(struct bpf_iter_num)); | ^~~~~~~~~~~~ vim +/__compiletime_assert_426 +399 include/linux/compiler_types.h eb5c2d4b45e3d2 Will Deacon 2020-07-21 385 eb5c2d4b45e3d2 Will Deacon 2020-07-21 386 #define _compiletime_assert(condition, msg, prefix, suffix) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 387 __compiletime_assert(condition, msg, prefix, suffix) eb5c2d4b45e3d2 Will Deacon 2020-07-21 388 eb5c2d4b45e3d2 Will Deacon 2020-07-21 389 /** eb5c2d4b45e3d2 Will Deacon 2020-07-21 390 * compiletime_assert - break build and emit msg if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 391 * @condition: a compile-time constant condition to check eb5c2d4b45e3d2 Will Deacon 2020-07-21 392 * @msg: a message to emit if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 393 * eb5c2d4b45e3d2 Will Deacon 2020-07-21 394 * In tradition of POSIX assert, this macro will break the build if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 395 * supplied condition is *false*, emitting the supplied error message if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 396 * compiler has support to do so. eb5c2d4b45e3d2 Will Deacon 2020-07-21 397 */ eb5c2d4b45e3d2 Will Deacon 2020-07-21 398 #define compiletime_assert(condition, msg) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 @399 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) eb5c2d4b45e3d2 Will Deacon 2020-07-21 400 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
