From 0f29566b5fad388cc4a07402f9651d86f1fe2b45 Mon Sep 17 00:00:00 2001
From: Tom Marshall <tdm.code@gmail.com>
Date: Fri, 19 May 2017 18:24:49 +0000
Subject: [PATCH] kernel: Fix potential refcount leak in su check

Change-Id: I3d241ae805ba708c18bccfd5e5d6cdcc8a5bc1c8
---

diff --git a/fs/namei.c b/fs/namei.c
index 414fc51..689339e 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1803,8 +1803,10 @@
 	if (!err) {
 		struct super_block *sb = nd->inode->i_sb;
 		if (sb->s_flags & MS_RDONLY) {
-			if (d_is_su(nd->path.dentry) && !su_visible())
+			if (d_is_su(nd->path.dentry) && !su_visible()) {
+				path_put(&nd->path);
 				err = -ENOENT;
+			}
 		}
 	}