diff --git a/mm/nommu.c b/mm/nommu.c
index 0563fd9003df86b0c8c39844341bfc1847d4dba7..57ae6126b29ad631c1b146538f7067a66b6525ef 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1217,7 +1217,7 @@ static int do_mmap_private(struct vm_area_struct *vma,
 	return 0;
 
 error_free:
-	free_page_series(region->vm_start, region->vm_end);
+	free_page_series(region->vm_start, region->vm_top);
 	region->vm_start = vma->vm_start = 0;
 	region->vm_end   = vma->vm_end = 0;
 	region->vm_top   = 0;