This is a note to let you know that I've just added the patch titled
ext4: fix oops in ext4_quota_off()
to the 2.6.39-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext4-fix-oops-in-ext4_quota_off.patch
and it can be found in the queue-2.6.39 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 0b26859027ce0005ef89520af20351360e51ad76 Mon Sep 17 00:00:00 2001
From: Amir Goldstein <[email protected]>
Date: Mon, 16 May 2011 09:59:13 -0400
Subject: ext4: fix oops in ext4_quota_off()
From: Amir Goldstein <[email protected]>
commit 0b26859027ce0005ef89520af20351360e51ad76 upstream.
If quota is not enabled when ext4_quota_off() is called, we must not
dereference quota file inode since it is NULL. Check properly for
this.
This fixes a bug in commit 21f976975cbe (ext4: remove unnecessary
[cm]time update of quota file), which was merged for 2.6.39-rc3.
Reported-by: Amir Goldstein <[email protected]>
Signed-off-by: Amir Goldstein <[email protected]>
Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: "Theodore Ts'o" <[email protected]>
Cc: Chris Dunlop <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
fs/ext4/super.c | 3 +++
1 file changed, 3 insertions(+)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4635,6 +4635,9 @@ static int ext4_quota_off(struct super_b
if (test_opt(sb, DELALLOC))
sync_filesystem(sb);
+ if (!inode)
+ goto out;
+
/* Update modification times of quota files when userspace can
* start looking at them */
handle = ext4_journal_start(inode, 1);
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.39/ext4-fix-oops-in-ext4_quota_off.patch
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