linux-ext4 - Re: [PATCH RESEND] ext4: Fix kernel BUG at fs/ext4/mballoc.c:910!

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Message-ID: <47B5B506.7020201@redhat.com>
Date:	Fri, 15 Feb 2008 09:51:34 -0600
From:	Eric Sandeen <sandeen@...hat.com>
To:	Valerie Clement <valerie.clement@...l.net>
CC:	linux-ext4 <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH RESEND] ext4: Fix kernel BUG at fs/ext4/mballoc.c:910!

Valerie Clement wrote:
> Eric Sandeen wrote:
>> Valerie Clement wrote:
>>> Fix kernel BUG at fs/ext4/mballoc.c:910!
>>>
>>> From: Valerie Clement <valerie.clement@...l.net>
>>>
>>> With the flex_bg feature enabled, a large file creation oopses the
>>> kernel.
>> Valerie, what's the specific testcase for this?
>>
>> Thanks,
>> -Eric
> I just did a simple dd,
>   dd if=/dev/zero of=/mnt/test/foo bs=1M count=8k
> on an ext4 filesystem with the uninit_groups, lazy_bg and flex_bg
> features enabled and the default mount options.

Ok, thanks Valerie.  It's just always nice to know exactly how to
reproduce a problem that a patch fixes, IMHO.

-Eric
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