linux-kernel - Re: kernel: smp: WARNING at kernel/smp.c:673

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Message-ID: <alpine.DEB.2.11.1408041020590.9249@gentwo.org>
Date:	Mon, 4 Aug 2014 10:21:47 -0500 (CDT)
From:	Christoph Lameter <cl@...two.org>
To:	Tejun Heo <htejun@...il.com>
cc:	Sasha Levin <sasha.levin@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>, Matt Mackall <mpm@...enic.com>,
	Gilad Ben-Yossef <gilad@...yossef.com>,
	Jens Axboe <axboe@...com>, Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: kernel: smp: WARNING at kernel/smp.c:673

On Mon, 4 Aug 2014, Tejun Heo wrote:

> On Mon, Aug 04, 2014 at 10:00:39AM -0500, Christoph Lameter wrote:
> > On Sun, 3 Aug 2014, Sasha Levin wrote:
> >
> > > While fuzzing with trinity inside a KVM tools guest running the latest -next
> > > kernel, I've stumbled on the following spew:
> >
> > Hmmm... Is this the new cpuset code that calling kmem_cache_shrink from
> > the cpu notifier?
>
> Hah?  I don't see anything cpuset related there.

Yuck. I meant cgroup code. There were some patches that were suggesting a
shrink operation when taking down a cgroup. Does that also apply to per
cpu downing?

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