diff --git a/sys/kern/kern_intr.c b/sys/kern/kern_intr.c
--- a/sys/kern/kern_intr.c
+++ b/sys/kern/kern_intr.c
@@ -532,6 +532,9 @@
 intr_event_destroy(struct intr_event *ie)
 {
 
+	if (ie == NULL)
+		return (EINVAL);
+
 	mtx_lock(&event_lock);
 	mtx_lock(&ie->ie_lock);
 	if (!CK_SLIST_EMPTY(&ie->ie_handlers)) {