Index: head/sys/vm/vm_object.c
===================================================================
--- head/sys/vm/vm_object.c
+++ head/sys/vm/vm_object.c
@@ -1496,6 +1496,8 @@
 		return (next);
 	/* The page is only NULL when rename fails. */
 	if (p == NULL) {
+		VM_OBJECT_WUNLOCK(object);
+		VM_OBJECT_WUNLOCK(backing_object);
 		vm_radix_wait();
 	} else {
 		if (p->object == object)