[kbuild-all] undefined reference to `__s390_'

tree: https://github.com/0day-ci/linux/commits/UPDATE-20210115-150503/sonicadva... head: add9d9a623c058dd74282ae99fca6b18fd38e800 commit: add9d9a623c058dd74282ae99fca6b18fd38e800 Adds a new ioctl32 syscall for backwards compatibility layers date: 5 hours ago config: s390-defconfig (attached as .config) compiler: s390-linux-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://github.com/0day-ci/linux/commit/add9d9a623c058dd74282ae99fca6b18f... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20210115-150503/sonicadvance1-gmail-com/Adds-a-new-ioctl32-syscall-for-backwards-compatibility-layers/20210106-145354 git checkout add9d9a623c058dd74282ae99fca6b18fd38e800 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 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 >>): s390-linux-ld: arch/s390/kernel/entry.o: in function `sys_call_table_emu': --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org