reproduce:
        # https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=826eb9bcc1844990e3c4a7c84846f1c1eaee0ed0
        git remote add net-next https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
        git fetch --no-tags net-next main
        git checkout 826eb9bcc1844990e3c4a7c84846f1c1eaee0ed0
        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