reproduce:
        # https://github.com/xinli-intel/linux-fred-public/commit/50ac8a7a9a9861fa6ac817aa2507943ff26c562c
        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 50ac8a7a9a9861fa6ac817aa2507943ff26c562c
        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