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Date: Tue, 29 Dec 2015 11:01:25 -0600 (CST)
From: Christoph Lameter <cl@linux.com>
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To: Sasha Levin <sasha.levin@oracle.com>
cc: Michal Hocko <mhocko@suse.cz>, LKML <linux-kernel@vger.kernel.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: mm, vmstat: kernel BUG at mm/vmstat.c:1408!
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On Thu, 24 Dec 2015, Sasha Levin wrote:

> >> > [ 3462.527795]   pwq 4: cpus=2 node=2 flags=0x0 nice=0 active=1/256
> >> > [ 3462.554836]     pending: vmstat_update
> > Does that mean that vmstat_update locks up or something that schedules it?
>
> I think it means that vmstat_update didn't finish running (working).

There is nothing in there that blocks.

> > Also what workload triggers the BUG()?
>
> Fuzzing with trinity inside a KVM guest. I've attached my config.

Ok will have a look.