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Date: Mon, 29 Apr 2013 11:46:23 -0400
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Sander Eikelenboom <linux@eikelenboom.it>, axboe@kernel.dk
Cc: xen-devel@lists.xensource.com, roger.pau@citrix.com,
        linux-kernel@vger.kernel.org
Subject: Re: [Xen-devel] [GIT PULL] (xen) stable/for-jens-3.10 xenwatch: page
 allocation failure: order:7, mode:0x10c0d0
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 <1094538380.20130424201637@eikelenboom.it>
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On Wed, Apr 24, 2013 at 08:16:37PM +0200, Sander Eikelenboom wrote:
> Friday, April 19, 2013, 4:44:01 PM, you wrote:
> 
> > Hey Jens,
> 
> > Please in your spare time (if there is such a thing at a conference)
> > pull this branch:
> 
> >  git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/for-jens-3.10
> 

.. snip..
> Hi Konrad / Roger,
> 
> I tried this pull on top of latest Linus latest linux-3.9 tree, but although it seems to boot and work fine at first, i seem to get trouble after running for about a day.
> Without this pull it runs fine for several days.
.. snipp.

> [18496.013743] xenwatch: page allocation failure: order:7, mode:0x10c0d0
> [18496.031948] Pid: 54, comm: xenwatch Not tainted 3.9.0-rc8-20130424-jens+ #1
> [18496.049897] Call Trace:
> [18496.067674]  [<ffffffff81100c51>] warn_alloc_failed+0xf1/0x140
> [18496.085453]  [<ffffffff810b25ed>] ? trace_hardirqs_on+0xd/0x10
> [18496.102951]  [<ffffffff810bdb24>] ? on_each_cpu_mask+0x94/0xd0
> [18496.120270]  [<ffffffff811028af>] __alloc_pages_nodemask+0x69f/0x960
> [18496.137306]  [<ffffffff8113a161>] alloc_pages_current+0xb1/0x160
> [18496.154051]  [<ffffffff81100679>] __get_free_pages+0x9/0x40
> [18496.170579]  [<ffffffff81142af4>] __kmalloc+0x134/0x160
> [18496.186921]  [<ffffffff815832d0>] xen_blkbk_probe+0x170/0x2f0
> [18496.202963]  [<ffffffff81474ce7>] xenbus_dev_probe+0x77/0x130
> [18496.218714]  [<ffffffff8156a390>] ? __driver_attach+0xa0/0xa0
> [18496.234237]  [<ffffffff8156a151>] driver_probe_device+0x81/0x220
> [18496.249605]  [<ffffffff8198198c>] ? klist_next+0x8c/0x110
> [18496.264681]  [<ffffffff8156a390>] ? __driver_attach+0xa0/0xa0
> [18496.279500]  [<ffffffff8156a3db>] __device_attach+0x4b/0x50
> [18496.294138]  [<ffffffff815684e8>] bus_for_each_drv+0x68/0x90
> [18496.308553]  [<ffffffff8156a0c9>] device_attach+0x89/0x90
> [18496.322694]  [<ffffffff81569258>] bus_probe_device+0xa8/0xd0
> [18496.336640]  [<ffffffff81567c80>] device_add+0x650/0x720

.. snip..

Jens,
I don't know if you had pulled this git tree yet (I don't see it in
your for-3.10/* branches).

But if you have, Sander has found a bug (and Roger has a fix for it).

Whether you would like to wait until v3.11 to pull it (and me sending
the git pull around a month) is OK. Or pull it now and we will fix the
bugs in the -rc's as they creep up.

Thanks!
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