diff --git a/mm/memory.c b/mm/memory.c
index b8487f8..ba86b43 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2821,7 +2821,7 @@
 			len, write, 0, NULL, NULL);
 	if (ret < 0)
 		return ret;
-	return ret == len ? 0 : -1;
+	return ret == len ? 0 : -EFAULT;
 }
 
 #if !defined(__HAVE_ARCH_GATE_AREA)