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Re: 2.6.15-mm3 bisection: git-xfs.patch makes reiserfs oops

To: "Hans Reiser" <reiser@xxxxxxxxxxx>
Subject: Re: 2.6.15-mm3 bisection: git-xfs.patch makes reiserfs oops
From: "Mattia Dongili" <malattia@xxxxxxxx>
Date: Mon, 16 Jan 2006 12:51:25 +0100 (CET)
Cc: "Nathan Scott" <nathans@xxxxxxx>, "Andrew Morton" <akpm@xxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, reiserfs-dev@xxxxxxxxxxx, linux-xfs@xxxxxxxxxxx, "Jeff Mahoney" <jeffm@xxxxxxxx>, "Mattia Dongili" <malattia@xxxxxxxx>
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References: <20060110235554.GA3527@inferi.kami.home> <20060110170037.4a614245.akpm@osdl.org> <20060115221458.GA3521@inferi.kami.home> <20060116094817.A8425113@wobbly.melbourne.sgi.com> <43CB6796.4040104@namesys.com>
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[...]
>  Nathan Scott wrote:
>>On Sun, Jan 15, 2006 at 11:14:58PM +0100, Mattia Dongili wrote:
[...]
>>>you're right: git-xfs.patch is the bad guy.
>>>
>>>Unfortunately netconsole isn't helpful in capturing the oops (no serial
>>>ports here) but I have two more shots (more readable):
>>>http://oioio.altervista.org/linux/dsc03148.jpg
>>>http://oioio.altervista.org/linux/dsc03149.jpg
>>>
>>>
>>
>>Hmm, thats odd.  It seems to be coming from:
>>reiserfs_commit_page -> reiserfs_add_ordered_list -> __add_jh(inline)
>>
>>I guess XFS may have left a buffer_head in an unusual state (with some
>>private flag/b_private set), somehow, and perhaps that buffer_head has
>>later been allocated for a page in a reiserfs write.  Does this patch,
>>below, help at all?

Yes, it does help, good catch! I'm currently running -mm4, which presented
the same behaviour, with your one liner and I can't reproduce the oops 
anymore (fortunately for my root FS!).

thanks
-- 
mattia
:wq!



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