tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a970174d7a1010cb29a5b0c9fa0626abdefcfcbe commit: 883bbbffa5a4ffd1915f8b42934dab81b7f87226 ftrace,kcfi: Separate ftrace_stub() and ftrace_stub_graph() date: 5 days ago config: arm64-randconfig-r011-20221025 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920) 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/torvalds/linux.git/commit/?id=883bbbffa5a4ffd1915f8b42934dab81b7f87226 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 883bbbffa5a4ffd1915f8b42934dab81b7f87226 # save the config file mkdir build_dir && cp config build_dir/.config 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 where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: __kcfi_typeid_ftrace_stub_graph >>> referenced by entry-ftrace.S:299 (arch/arm64/kernel/entry-ftrace.S:299) >>> arch/arm64/kernel/entry-ftrace.o:(.text+0x48) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://01.org/lkp