linux-ext4 - Re: [PATCH] e2fsck: don't try to stop mmp if there is no superblock set up

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Date:	Mon, 9 Sep 2013 10:33:48 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	ext4 development <linux-ext4@...r.kernel.org>,
	Hubert Kario <hkario@...hat.com>
Subject: Re: [PATCH] e2fsck: don't try to stop mmp if there is no superblock
 set up

On Fri, Aug 16, 2013 at 12:05:55PM -0500, Eric Sandeen wrote:
> Under some failure cases, we can get to fatal_error()
> without even having a superblock set up.  In that case,
> ext2fs_mmp_stop() will segfault when it tries to dereference
> fs->super.
> 
> Check for the existence of a superblock before we go
> down the ext2fs_mmp_stop() path to avoid this problem.
> 
> Reported-by: Hubert Kario <hkario@...hat.com>
> Addresses-Red-Hat-Bugzilla: #997972
> Signed-off-by: Eric Sandeen <sandeen@...hat.com>

Thanks, applied.

					- Ted
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