tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 7d9c6b8147bdd76d7eb2cf6f74f84c6918ae0939 commit: 6236172d2d1e39b91bfefc396b50ba2275b437dc [10117/10875] s390: setup kernel memory layout early config: s390-randconfig-r022-20210617 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 6236172d2d1e39b91bfefc396b50ba2275b437dc # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 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 >>): void adjust_to_uv_max(unsigned long *vmax) ^ arch/s390/include/asm/uv.h:357:20: note: previous definition is here static inline void adjust_to_uv_max(unsigned long *vmax) {} ^ 1 error generated. vim +/adjust_to_uv_max +65 arch/s390/boot/uv.c 64 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org