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Message-ID: <1322007501.14573.15.camel@pasglop>
Date: Wed, 23 Nov 2011 11:18:21 +1100
From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
To: Christian Kujau <lists@...dbynature.de>
Cc: Eric Dumazet <eric.dumazet@...il.com>,
Christoph Lameter <cl@...ux.com>,
Markus Trippelsdorf <markus@...ppelsdorf.de>,
"Alex,Shi" <alex.shi@...el.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-mm@...ck.org" <linux-mm@...ck.org>,
Pekka Enberg <penberg@...nel.org>,
Matt Mackall <mpm@...enic.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
Tejun Heo <tj@...nel.org>
Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413
On Tue, 2011-11-22 at 15:12 -0800, Christian Kujau wrote:
> On Wed, 23 Nov 2011 at 08:58, Benjamin Herrenschmidt wrote:
> > > > --- linux-2.6.orig/mm/slub.c 2011-11-21 21:15:41.575673204 -0600
> > > > +++ linux-2.6/mm/slub.c 2011-11-21 21:16:33.442336849 -0600
> [...]
> > > > - } while (this_cpu_cmpxchg(s->cpu_slab->partial, oldpage, page) != oldpage);
> > > > + } while (irqsafe_cpu_cmpxchg(s->cpu_slab->partial, oldpage, page) != oldpage);
> >
> > Christian, can you try it see if that helps in your case ?
>
> Only this one-liner from Christoph or any of the other patches that were
> proposed in this thread?
>
> Will test...but this might take a while...
I'd say only this one liner for now, just don't do slabinfo :-) I just
want to see whether your network + heavy IO load problem goes away with
that one patch.
Thanks !
Cheers,
Ben.
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