Corpus for keyctl$revoke:

Coverage	Program
626	perf_event_open-getpid-keyctl$KEYCTL_RESTRICT_KEYRING-add_key$keyring-add_key$keyring-keyctl$KEYCTL_MOVE-add_key$keyring-keyctl$KEYCTL_MOVE-keyctl$revoke-add_key
604	perf_event_open-add_key$keyring-add_key$user-keyctl$revoke
298	add_key$keyring-add_key$keyring-add_key-keyctl$revoke
22	keyctl$revoke