tree: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/kernel-ptrauth head: 6cb6982f42cbfaf5e50af1069451a8828231ffb9 commit: 74afda4016a7437e6e425c3370e4b93b47be8ddf [16/17] arm64: compile the kernel with ptrauth return address signing config: arm64-randconfig-a001-20200318 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 74afda4016a7437e6e425c3370e4b93b47be8ddf # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org