linux-kernel - Re: mm, vmstat: kernel BUG at mm/vmstat.c:1408!

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Message-ID: <alpine.DEB.2.20.1512291059580.28632@east.gentwo.org>
Date:	Tue, 29 Dec 2015 11:01:25 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Sasha Levin <sasha.levin@...cle.com>
cc:	Michal Hocko <mhocko@...e.cz>, LKML <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: mm, vmstat: kernel BUG at mm/vmstat.c:1408!

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.

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