Corpus for keyctl$restrict_keyring:

Coverage	Program
5099	perf_event_open-socket$netlink-sendmsg$nl_generic-close_range-perf_event_open-syz_open_dev$tty1-add_key$keyring-sendmsg$nl_generic-add_key$keyring-add_key$keyring-sendmsg$BATADV_CMD_SET_MESH-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-add_key$keyring-add_key-add_key$keyring-keyctl$revoke-syz_open_procfs-unshare
351	add_key$keyring-keyctl$restrict_keyring
229	add_key$keyring-keyctl$restrict_keyring
46	keyctl$restrict_keyring