Corpus for keyctl$link:

Coverage	Program
5712	perf_event_open-add_key-ioctl$AUTOFS_DEV_IOCTL_ISMOUNTPOINT-perf_event_open-add_key$keyring-add_key$fscrypt_v1-add_key$keyring-keyctl$link-syz_emit_ethernet-syz_mount_image$iso9660
3741	perf_event_open-perf_event_open-add_key$fscrypt_v1-keyctl$link-syz_mount_image$iso9660-keyctl$update-add_key$fscrypt_v1
738	syz_mount_image$vfat-chdir-perf_event_open-add_key-fcntl$getown-add_key$keyring-bind$inet-add_key-openat-add_key$keyring-add_key$fscrypt_v1-add_key$fscrypt_v1-keyctl$revoke-add_key$keyring-add_key$fscrypt_v1-add_key$fscrypt_v1-keyctl$link-syz_open_procfs-syz_mount_image$ext4
561	socket$nl_generic-ioctl$TCSETSF2-ioctl$TUNSETCARRIER-pidfd_open-syz_open_procfs-pwritev2-sendmsg$nl_generic-fcntl$dupfd-fallocate-perf_event_open-socket$inet6_udplite-fsetxattr$security_ima-setsockopt$inet6_group_source_req-setsockopt$inet6_group_source_req-dup2-add_key$fscrypt_v1-keyctl$link-keyctl$link-openat$ttyS3
296	add_key$keyring-add_key$keyring-keyctl$restrict_keyring-keyctl$link
288	add_key$fscrypt_v1-add_key$keyring-add_key$user-keyctl$KEYCTL_RESTRICT_KEYRING-keyctl$link
219	add_key$keyring-keyctl$link