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Re: [xfs-masters] 2.6.29-rc: kernel BUG at fs/xfs/support/debug.c:108

To: "Dave Chinner" <david@xxxxxxxxxxxxx>, xfs-masters@xxxxxxxxxxx, xfs@xxxxxxxxxxx, kernel-testers@xxxxxxxxxxxxxxx
Subject: Re: [xfs-masters] 2.6.29-rc: kernel BUG at fs/xfs/support/debug.c:108
From: "Alexander Beregalov" <a.beregalov@xxxxxxxxx>
Date: Sat, 10 Jan 2009 15:19:00 +0300
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References: <20090109044121.GA31280@orion> <20090109053858.GP9448@disturbed> <a4423d670901091353s7ff12207gcb38eb093d77d401@mail.gmail.com> <a4423d670901091418j5c7fdfb2oeba2f4640f8e29d0@mail.gmail.com> <a4423d670901091511y68a53808rfaab8148526224c6@mail.gmail.com>
2009/1/10 Alexander Beregalov <a.beregalov@xxxxxxxxx>:
> 2009/1/10 Alexander Beregalov <a.beregalov@xxxxxxxxx>:
>> 2009/1/10 Alexander Beregalov <a.beregalov@xxxxxxxxx>:
>>> 2009/1/9 Dave Chinner <david@xxxxxxxxxxxxx>:
>>>> On Fri, Jan 09, 2009 at 07:41:21AM +0300, Alexander Beregalov wrote:
>>>> Looks like the same btree corruption problem as this:
>>>>
>>>> http://oss.sgi.com/archives/xfs/2009-01/msg00118.html
>>>>
>>>> We're working to find the cause right now, but I find it interesting
>>>> that you are running a CONFIG_XFS_DEBUG=y kernel and the first
>>>> point that something is found wrong is the same place that the
>>>> above non-debug case is detecting corruption.
>>>>
>>>> Can you reproduce it/have a reproducable test case?
>>> Yes, it is easy reproducible for me, it happens every time I run
>>> `rtorrent` during few minutes after boot.
>>> I will try to provide simpler testcase.

It is hard to bisect it,
These are last good and bad commits:
good: [854929f05831d3a290a802815ee955b96c740c61] [XFS] add new btree statistics
bad: [7f7c39ccb6045cf1fd5e7684a484c445291b44d4] [XFS] make btree tracing generic

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