From: Vasiliy Kulikov <segooon@gmail.com>
Date: Sun, 5 Sep 2010 18:33:04 +0000 (+0400)
Subject: UBIFS: check return code of pnode_lookup
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=8c893a5545ca772744376295690723dcb0b47d96;p=openwrt%2Fstaging%2Fblogic.git

UBIFS: check return code of pnode_lookup

Function pnode_lookup may return ERR_PTR(...). Check for it.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
---

diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index d12535b7fc78..5c90dec5db0b 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -705,6 +705,9 @@ static int make_tree_dirty(struct ubifs_info *c)
 	struct ubifs_pnode *pnode;
 
 	pnode = pnode_lookup(c, 0);
+	if (IS_ERR(pnode))
+		return PTR_ERR(pnode);
+
 	while (pnode) {
 		do_make_pnode_dirty(c, pnode);
 		pnode = next_pnode_to_dirty(c, pnode);