reproduce:
        # https://github.com/xinli-intel/linux-fred-public/commit/3670a5472ea048aa86e62b5bacc22894d7c21f20
        git remote add xinli-intel-fred-public https://github.com/xinli-intel/linux-fred-public.git
        git fetch --no-tags xinli-intel-fred-public intel-lkp
        git checkout 3670a5472ea048aa86e62b5bacc22894d7c21f20
        make W=1 O=/tmp/kselftest headers
        make W=1 O=/tmp/kselftest -C tools/testing/selftests
        make W=1 O=/tmp/kselftest -C tools/testing/selftests/bpf