Dear Jarkko, dear Mickaël, The commit 7ed88a03b15b ("certs: Check that builtin blacklist hashes are valid") adds a file entry for scripts/extract-cert.c in the CERTIFICATE HANDLING section in MAINTAINERS. Hence, ./scripts/get_maintainers.pl --self-test=patterns complains: warning: no file matches F: scripts/extract-cert.c I could not see that line being added in the original patch, i.e., https://lore.kernel.org/all/20210712170313.884724-3-mic@xxxxxxxxxxx/, but it was only part of the context of that patch. In linux-next, it appears to be part of the commit above. That seems to be introduced while applying or rebasing the patch to some later version. If that is the case, you can probably just drop this line "F: scripts/extract-cert.c" in the MAINTAINERS file. Best regards, Lukas