diff --git a/mm/memory.c b/mm/memory.c
index 0428ff5ee339..ad4bf1a1a0ef 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1545,7 +1545,7 @@ static int __vm_map_pages(struct vm_area_struct *vma, struct page **pages,
 	int ret, i;
 
 	/* Fail if the user requested offset is beyond the end of the object */
-	if (offset > num)
+	if (offset >= num)
 		return -ENXIO;
 
 	/* Fail if the user requested size exceeds available object size */