Corpus for keyctl$unlink:

Coverage	Program
2615	fchown-perf_event_open-memfd_create-mmap-ioctl$NS_GET_OWNER_UID-add_key$fscrypt_v1-keyctl$chown-keyctl$unlink-recvmsg$unix-stat-getgid-perf_event_open-fork
884	perf_event_open-add_key$keyring-add_key$keyring-keyctl$KEYCTL_MOVE-add_key$keyring-add_key$keyring-keyctl$unlink-add_key$keyring-dup-ioctl$BTRFS_IOC_SNAP_DESTROY_V2
695	add_key$keyring-keyctl$unlink
349	perf_event_open-ptrace-ptrace$peeksig-add_key$keyring-add_key$keyring-keyctl$unlink
225	add_key$keyring-add_key$fscrypt_v1-keyctl$unlink
53	perf_event_open-add_key$keyring-add_key$keyring-keyctl$KEYCTL_MOVE-add_key$fscrypt_v1-keyctl$unlink-keyctl$KEYCTL_MOVE
45	keyctl$unlink