From: Eric Sandeen <sandeen@redhat.com>
To: Theodore Tso <tytso@mit.edu>
Cc: linux-ext4@vger.kernel.org
Subject: Re: [PATCH] ext4: Make the extent validity check more paranoid
Date: Thu, 23 Apr 2009 07:52:28 -0500 [thread overview]
Message-ID: <49F0648C.10407@redhat.com> (raw)
In-Reply-To: <20090423041914.GA2723@mit.edu>
Theodore Tso wrote:
> On Wed, Apr 22, 2009 at 09:04:30PM -0500, Eric Sandeen wrote:
>> Theodore Ts'o wrote:
>>> Instead of just checking that the extent block number is greater or
>>> equal than s_first_data_block, make sure it it is not pointing into
>>> the block group descriptors, since that is clearly wrong. This helps
>>> prevent filesystem from getting very badly corrupted in case an extent
>>> block is corrupted.
>>>
>>> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
>> Good idea. Maybe we can get our friends with the corrupted fs to run
>> with these validation patches... I can get this into rawhide at least.
>
> Yeah, unfortunately this patch requires some other patches that went
> in during the 2.6.30 merge window, so some extra back-porting would be
> needed for our friends running a 2.6.29.1 Fedora kernel.
Right, but rawhide has .30-etc, so a test on that might be helpful.
-Eric
prev parent reply other threads:[~2009-04-23 12:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-23 1:29 [PATCH] ext4: Make the extent validity check more paranoid Theodore Ts'o
2009-04-23 2:04 ` Eric Sandeen
2009-04-23 4:19 ` Theodore Tso
2009-04-23 12:52 ` Eric Sandeen [this message]
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