[kbuild-all] kernel/bpf/syscall.o: warning: objtool: map_lookup_elem()+0x195: unreachable instruction

CC: linux-kernel(a)vger.kernel.org TO: Alexei Starovoitov <ast(a)kernel.org&gt; CC: Daniel Borkmann <daniel(a)iogearbox.net&gt; tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d5ae8d7f85b7f6f6e60f1af8ff4be52b0926fde1 commit: af2ac3e13e45752af03c8a933f9b6e18841b128b bpf: Prepare bpf syscall to be used from kernel and user space. date: 3 months ago config: x86_64-buildonly-randconfig-r003-20210819 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d2b574a4dea5b718e4386bf2e26af0126e5978ce) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout af2ac3e13e45752af03c8a933f9b6e18841b128b # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/ kernel/ net/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel 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