Corpus for keyctl$join:

Coverage	Program
802	add_key$keyring-add_key-keyctl$search-add_key-request_key-request_key-request_key-add_key$fscrypt_v1-add_key$keyring-add_key$keyring-keyctl$join
721	perf_event_open-socket$inet6_udplite-syz_io_uring_submit-add_key$keyring-keyctl$revoke-keyctl$join
579	perf_event_open-pkey_mprotect-keyctl$join
444	perf_event_open-keyctl$join
377	pkey_mprotect-keyctl$join
130	mount$9p_fd-pkey_mprotect-keyctl$join
124	pkey_mprotect-keyctl$join