diff --git a/mm/memory.c b/mm/memory.c
index ce5cd8d4c401..6bda739a60e8 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1084,6 +1084,7 @@ copy_pte_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,
 	struct mm_struct *src_mm = src_vma->vm_mm;
 	pte_t *orig_src_pte, *orig_dst_pte;
 	pte_t *src_pte, *dst_pte;
+	pmd_t dummy_pmdval;
 	pte_t ptent;
 	spinlock_t *src_ptl, *dst_ptl;
 	int progress, max_nr, ret = 0;
@@ -1109,7 +1110,15 @@ copy_pte_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,
 		ret = -ENOMEM;
 		goto out;
 	}
-	src_pte = pte_offset_map_nolock(src_mm, src_pmd, addr, &src_ptl);
+
+	/*
+	 * We already hold the exclusive mmap_lock, the copy_pte_range() and
+	 * retract_page_tables() are using vma->anon_vma to be exclusive, so
+	 * the PTE page is stable, and there is no need to get pmdval and do
+	 * pmd_same() check.
+	 */
+	src_pte = pte_offset_map_rw_nolock(src_mm, src_pmd, addr, &dummy_pmdval,
+					   &src_ptl);
 	if (!src_pte) {
 		pte_unmap_unlock(dst_pte, dst_ptl);
 		/* ret == 0 */