Corpus for keyctl$revoke:

Coverage	Program
1910	perf_event_open-add_key$keyring-add_key$user-keyctl$revoke
435	perf_event_open-getpid-keyctl$KEYCTL_RESTRICT_KEYRING-add_key$keyring-add_key$keyring-keyctl$KEYCTL_MOVE-add_key$keyring-keyctl$KEYCTL_MOVE-keyctl$revoke-add_key
296	add_key$keyring-add_key$keyring-add_key-keyctl$revoke
253	perf_event_open-sched_setaffinity-add_key$keyring-add_key$keyring-keyctl$KEYCTL_RESTRICT_KEYRING-keyctl$revoke