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Date: Fri, 26 Oct 2012 11:20:48 +0200
From: Ingo Molnar <mingo@kernel.org>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zhouping Liu <zliu@redhat.com>, Rik van Riel <riel@redhat.com>,
        Andrea Arcangeli <aarcange@redhat.com>, Mel Gorman <mgorman@suse.de>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 00/31] numa/core patches
Message-ID: <20121026092048.GA628@gmail.com>
References: <20121025121617.617683848@chello.nl>
 <508A52E1.8020203@redhat.com>
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* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:

> 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?

Meanwhile, Zhouping Liu, could you please not apply the last 
patch:

  [PATCH] sched, numa, mm: Add memcg support to do_huge_pmd_numa_page()

and see whether it boots/works without that?

Thanks,

	Ingo
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