Corpus for keyctl$restrict_keyring:

Coverage	Program
838	perf_event_open-add_key$keyring-add_key$keyring-syz_io_uring_submit-write$binfmt_script-syz_io_uring_submit-keyctl$KEYCTL_MOVE-keyctl$KEYCTL_MOVE-add_key$fscrypt_v1-keyctl$reject-syz_io_uring_submit-syz_io_uring_submit-add_key$keyring-add_key$keyring-keyctl$restrict_keyring-keyctl$restrict_keyring-add_key$keyring-keyctl$restrict_keyring-keyctl$restrict_keyring
642	add_key$keyring-add_key$fscrypt_v1-keyctl$restrict_keyring
432	keyctl$restrict_keyring
383	perf_event_open-add_key$keyring-keyctl$restrict_keyring
352	add_key$keyring-keyctl$restrict_keyring
300	add_key$user-add_key$keyring-keyctl$restrict_keyring-keyctl$link
283	keyctl$restrict_keyring