reproduce:
        git checkout linus/master
        b4 shazam https://lore.kernel.org/r/20250115214306.154853-1-hamzamahfooz@linux.microsoft.com
        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