Corpus for keyctl$invalidate:

Coverage	Program
311	perf_event_open-socket$nl_netfilter-add_key$fscrypt_v1-keyctl$invalidate-add_key$keyring-keyctl$KEYCTL_MOVE-keyctl$link
241	add_key$keyring-keyctl$KEYCTL_MOVE-keyctl$invalidate
86	keyctl$invalidate
54	stat-setresuid-keyctl$invalidate