From: Josef Bacik <jbacik@redhat.com>
Date: Wed, 30 Apr 2008 02:04:56 +0000 (-0400)
Subject: ext4:  check return of ext4_orphan_get properly
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97bd42b9c8be748ad85b362ba3bd401f4d35be80;p=linux-2.6

ext4:  check return of ext4_orphan_get properly

This patch fix a panic while running fsfuzzer.
We are improperly checking the return of ext4_orphan_get.

Signed-off-by: Josef Bacik <jbacik@redhat.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index c81a8e759b..425f42778e 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1594,8 +1594,8 @@ static void ext4_orphan_cleanup (struct super_block * sb,
 	while (es->s_last_orphan) {
 		struct inode *inode;
 
-		if (!(inode =
-		      ext4_orphan_get(sb, le32_to_cpu(es->s_last_orphan)))) {
+		inode = ext4_orphan_get(sb, le32_to_cpu(es->s_last_orphan));
+		if (IS_ERR(inode)) {
 			es->s_last_orphan = 0;
 			break;
 		}