tree: https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20211124-sysctl-cleanups head: be58d35fd7e6bfac6e48e3188ab9f4d0b5ac4af7 commit: 81e9e1fdc7a64b2745a2c11769eb3864121eedc0 [20/41] sysctl: add helper to register a sysctl mount point config: hexagon-randconfig-r005-20211124 (https://download.01.org/0day-ci/archive/20211125/202111250521.fMsBjd43-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 67a1c45def8a75061203461ab0060c75c864df1c) 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/mcgrof/linux-next.git/com... git remote add mcgrof-next https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git git fetch --no-tags mcgrof-next 20211124-sysctl-cleanups git checkout 81e9e1fdc7a64b2745a2c11769eb3864121eedc0 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon 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 lib/test_bitops.c:9: In file included from include/linux/module.h:17: In file included from include/linux/kmod.h:9: In file included from include/linux/umh.h:9: static struct sysctl_header *register_sysctl_mount_point(const char *path) ^ 1 error generated. vim +/register_sysctl_mount_point +228 include/linux/sysctl.h 227 229 { 230 return NULL; 231 } 232 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org