diff --git a/mm/filemap.c b/mm/filemap.c
index 2d930470aaca..d633ab8cd56f 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3319,7 +3319,7 @@ static bool filemap_map_pmd(struct vm_fault *vmf, struct page *page)
 		}
 	}
 
-	if (pmd_none(*vmf->pmd))
+	if (pmd_none(*vmf->pmd) && vmf->prealloc_pte)
 		pmd_install(mm, vmf->pmd, &vmf->prealloc_pte);
 
 	/* See comment in handle_pte_fault() */