reproduce:
        git remote add crng-random https://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git
        git fetch crng-random master
        git checkout crng-random/master
        b4 shazam https://lore.kernel.org/r/ddf594c81787dba708fc392cb03027470dee64fb.1725124064.git.christophe.leroy@csgroup.eu
        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