kernel/bpf/syscall.o: warning: objtool: map_lookup_elem()+0x195: unreachable instruction

kernel/bpf/syscall.o: warning: objtool: map_lookup_elem()+0x195: unreachable instruction

[kernel test robot]

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CC: linux-kernel(a)vger.kernel.org
TO: Alexei Starovoitov <ast@kernel.org>
CC: Daniel Borkmann <daniel@iogearbox.net>

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/?id=af2ac3e13e45752af03c8a933f9b6e18841b128b
        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@intel.com>

All warnings (new ones prefixed by >>):

>> kernel/bpf/syscall.o: warning: objtool: map_lookup_elem()+0x195: unreachable instruction

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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