linux-ext4 - [PATCH] check return of ext4_orphan

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Message-ID: <20080411193208.GB2757@unused.rdu.redhat.com>
Date:	Fri, 11 Apr 2008 15:32:08 -0400
From:	Josef Bacik <jbacik@...hat.com>
To:	linux-ext4@...r.kernel.org
Cc:	cmm@...ibm.com
Subject: [PATCH] check return of ext4_orphan_get properly

Hello,

Hit a panic while running fsfuzzer, seems we are improperly checking the return
of ext4_orphan_get.  This patch fixes the problem, thank you

Signed-off-by: Josef Bacik <jbacik@...hat.com>


Index: linux-2.6/fs/ext4/super.c
===================================================================
--- linux-2.6.orig/fs/ext4/super.c
+++ linux-2.6/fs/ext4/super.c
@@ -1652,8 +1652,8 @@ static void ext4_orphan_cleanup (struct 
 	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;
 		}
--
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