Re: 2.6.39-rc0: xfs: kernel BUG at mm/page

xfs

Re: 2.6.39-rc0: xfs: kernel BUG at mm/page_alloc.c:738

To:	Alexander Beregalov <a.beregalov@xxxxxxxxx>
Subject:	Re: 2.6.39-rc0: xfs: kernel BUG at mm/page_alloc.c:738
From:	Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date:	Tue, 22 Mar 2011 04:47:55 -0400
Cc:	xfs@xxxxxxxxxxx, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to:	<AANLkTincs+MyYf+2tt2Y3LMQdmF8PUAxKMxMXuKB72hZ@xxxxxxxxxxxxxx>
References:	<AANLkTincs+MyYf+2tt2Y3LMQdmF8PUAxKMxMXuKB72hZ@xxxxxxxxxxxxxx>
User-agent:	Mutt/1.5.21 (2010-09-15)

On Mon, Mar 21, 2011 at 04:34:46AM +0300, Alexander Beregalov wrote:
> Hi
> 
> Steps to reproduce:
> run xfs_fsr on xfs device
> 
> arch is x86 UP, kernel is 2.6.38-06507-ga952baa
> 
> kernel BUG at mm/page_alloc.c:738!
> invalid opcode: 0000 [#1]
> last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
> Modules linked in: hwmon_vid sata_sil i2c_nforce2

I don't really see anything XFS-specific in here.  The page allocator
is unhappy, and we get there through the generic read code, which just
has a tiny xfs wrapper.

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