audit: reject entry,always rules

We deprecated entry,always rules a long time ago.  Reject those rules as
invalid.
Signed-off-by: NEric Paris <eparis@redhat.com>

kernel/auditfilter.c

@@ -235,13 +235,15 @@ static inline struct audit_entry *audit_to_entry_common(struct audit_rule *rule)
 	switch(listnr) {
 	default:
 		goto exit_err;
-	case AUDIT_FILTER_USER:
-	case AUDIT_FILTER_TYPE:
 #ifdef CONFIG_AUDITSYSCALL
 	case AUDIT_FILTER_ENTRY:
+		if (rule->action == AUDIT_ALWAYS)
+			goto exit_err;
 	case AUDIT_FILTER_EXIT:
 	case AUDIT_FILTER_TASK:
 #endif
+	case AUDIT_FILTER_USER:
+	case AUDIT_FILTER_TYPE:
 		;
 	}
 	if (unlikely(rule->action == AUDIT_POSSIBLE)) {