linux-kernel - Re: 2.6.29-git: cannot mount ext4/loop

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Message-ID: <a4423d670904020547s72972089t3c135a92af6751d4@mail.gmail.com>
Date:	Thu, 2 Apr 2009 16:47:06 +0400
From:	Alexander Beregalov <a.beregalov@...il.com>
To:	Theodore Tso <tytso@....edu>, Jens Axboe <jens.axboe@...cle.com>,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	Thiemo Nagel <thiemo.nagel@...tum.de>
Subject: Re: 2.6.29-git: cannot mount ext4/loop

2009/4/2 Alexander Beregalov <a.beregalov@...il.com>:
> 2009/4/2 Alexander Beregalov <a.beregalov@...il.com>:
>> 2009/4/2 Theodore Tso <tytso@....edu>:
>>> On Thu, Apr 02, 2009 at 02:53:51AM +0400, Alexander Beregalov wrote:
>>>> On Thu, Apr 02, 2009 at 01:23:28AM +0400, Alexander Beregalov wrote:
>>>> > Hi Theodore, Jens
>>>> >
>>>> > kernel is 2.6.29-07099-g8b53ef3
>>>> >
>>>> > Mount failed:
>>>> >
>>>> > EXT4-fs: barriers enabled
>>>> > kjournald2 starting: pid 1867, dev loop0:8, commit interval 5 seconds
>>>> > EXT4-fs error (device loop0): ext4_iget: block reference 2703228928 >=
>>>> > max (524288) in inode #2, offset=0
>>>> > EXT4-fs: get root inode failed
>>>> > EXT4-fs (device loop0): mount failed
>>>
>>> I don't get this failure in a Linux 2.6 kernel based off of 5d80f8e5
>>> with the )now upstream) ext4 patches merged in.  I'm guessing sometime
>>> between v2.6.29-3652-g5d80f8e and 2.6.29-07099-g8b53ef3 a regression
>>> was introduced into the loop driver?
>>
>> It is sparc host again.
>> 2.6.29-06608-g15f7176 worked fine.
>> There was one commit to loop.c:
>> 53d66608 (loop: add ioctl to resize a loop device)
>> and ext4 git pull.
>>
>> I wil try to revert it and probably bisect.
>
> Revert 53d66608 does not help.
> Bisecting...

Done.
fe2c8191faa29d7a09f4962198f6dfab973ceec4 is first bad commit
commit fe2c8191faa29d7a09f4962198f6dfab973ceec4
Author: Thiemo Nagel <thiemo.nagel@...tum.de>
Date:   Tue Mar 31 08:36:10 2009 -0400

    ext4: add checks of block references for non-extent inodes
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