diff --git a/mm/memory.c b/mm/memory.c
index 22bfa7a47a0b613cf9c39ee6e7d24f7dc3c9cf77..baa999e87cd21d2f9e67c8e3b1093bb6831513fb 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1999,7 +1999,7 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
 	 * Don't let another task, with possibly unlocked vma,
 	 * keep the mlocked page.
 	 */
-	if (vma->vm_flags & VM_LOCKED) {
+	if ((vma->vm_flags & VM_LOCKED) && old_page) {
 		lock_page(old_page);	/* for LRU manipulation */
 		clear_page_mlock(old_page);
 		unlock_page(old_page);