tree: https://github.com/0day-ci/linux/commits/UPDATE-20200714-054132/Jian-Cai/... head: e6faa7ae3dbe0360a57bfba283322276ba5fd65f commit: e6faa7ae3dbe0360a57bfba283322276ba5fd65f [1/1] x86/entry: add compatibility with IAS config: x86_64-randconfig-s021-20200717 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-49-g707c5017-dirty git checkout e6faa7ae3dbe0360a57bfba283322276ba5fd65f # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 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 >>): ld: arch/x86/entry/entry_64.o: in function `spurious_entries_start': ld: (.entry.text+0x781): undefined reference to `i' ld: (.entry.text+0x789): undefined reference to `i' ld: (.entry.text+0x791): undefined reference to `i' ld: arch/x86/entry/entry_64.o:(.entry.text+0x799): more undefined references to `i' follow --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org