diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c
--- a/sys/vm/vm_object.c
+++ b/sys/vm/vm_object.c
@@ -1656,8 +1656,8 @@
 	 * and new_object's locks are released and reacquired.
 	 */
 	swap_pager_copy(orig_object, new_object, offidxstart, 0);
-
-	TAILQ_FOREACH(m, &new_object->memq, listq)
+	vm_page_iter_init(&pages, new_object);
+	VM_RADIX_FOREACH(m, pages)
 		vm_page_xunbusy(m);
 
 	vm_object_clear_flag(orig_object, OBJ_SPLIT);