tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: e5071887cd2296a7704dbcd10c1cedf0f11cdbd5 commit: e63b15ad51960e4e7970612849391859be30d63f [14920/15002] arm64: implement stack_trace_save_shadow config: arm64-randconfig-r025-20220331 (https://download.01.org/0day-ci/archive/20220402/202204020202.BdSj29hd-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project cc2e2b80a1f36a28fa7c96c38c2674b10868f09f) 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/next/linux-next.git/commit/?id=e63b15ad51960e4e7970612849391859be30d63f 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 e63b15ad51960e4e7970612849391859be30d63f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: arch_stack_walk_shadow >>> referenced by stacktrace.c:257 (kernel/stacktrace.c:257) >>> stacktrace.o:(stack_trace_save_shadow) in archive kernel/built-in.a -- 0-DAY CI Kernel Test Service https://01.org/lkp
