diff --git a/mm/nommu.c b/mm/nommu.c
index 0563fd9..57ae612 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1217,7 +1217,7 @@
 	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;