linux-kernel - Re: [PATCH 00/31] numa/core patches

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Date:	Fri, 26 Oct 2012 11:08:00 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Zhouping Liu <zliu@...hat.com>
Cc:	Rik van Riel <riel@...hat.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Mel Gorman <mgorman@...e.de>,
	Johannes Weiner <hannes@...xchg.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH 00/31] numa/core patches

On Fri, 2012-10-26 at 17:07 +0800, Zhouping Liu wrote:
> [  180.918591] RIP: 0010:[<ffffffff8118c39a>]  [<ffffffff8118c39a>] mem_cgroup_prepare_migration+0xba/0xd0

> [  182.681450]  [<ffffffff81183b60>] do_huge_pmd_numa_page+0x180/0x500
> [  182.775090]  [<ffffffff811585c9>] handle_mm_fault+0x1e9/0x360
> [  182.863038]  [<ffffffff81632b62>] __do_page_fault+0x172/0x4e0
> [  182.950574]  [<ffffffff8101c283>] ? __switch_to_xtra+0x163/0x1a0
> [  183.041512]  [<ffffffff8101281e>] ? __switch_to+0x3ce/0x4a0
> [  183.126832]  [<ffffffff8162d686>] ? __schedule+0x3c6/0x7a0
> [  183.211216]  [<ffffffff81632ede>] do_page_fault+0xe/0x10
> [  183.293705]  [<ffffffff8162f518>] page_fault+0x28/0x30 

Johannes, this looks like the thp migration memcg hookery gone bad,
could you have a look at this?
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