tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 18250b538735142307082e4e99e3ae5c12d44013 commit: 000174233b91340ca52a9eca905d029a9a2aefd9 [11342/13394] s390/atomic,cmpxchg: switch to use atomic-instrumented.h config: s390-randconfig-r016-20210416 (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://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 000174233b91340ca52a9eca905d029a9a2aefd9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 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: lib/atomic64_test.o: in function `__xchg': --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org