tree: https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/entry/rework head: 3e54b97cd19bedc6dc6327162b54d7e26680c5e0 commit: f91b0ccbea10a0aed4b479aebdd3c6e673fff4fb [15/16] arm64: entry: add a call_on_irq_stack helper config: arm64-randconfig-r034-20210312 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 7b153b43d3a14d76975039408c4b922beb576735) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id... git remote add mark-rutland https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git git fetch --no-tags mark-rutland arm64/entry/rework git checkout f91b0ccbea10a0aed4b479aebdd3c6e673fff4fb # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 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 >>): aarch64-linux-gnu-ld: arch/arm64/kernel/entry.o: in function `call_on_irq_stack': (.text+0x78): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against undefined symbol `irq_shadow_call_stack' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org