From: Borislav Petkov <bp@amd64.org>
To: Conny Seidel <conny.seidel@amd.com>
Cc: Jan Kara <jack@suse.cz>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Fengguang Wu <fengguang.wu@intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <jweiner@redhat.com>
Subject: Re: divide error: bdi_dirty_limit+0x5a/0x9e
Date: Mon, 24 Sep 2012 20:19:27 +0200 [thread overview]
Message-ID: <20120924181927.GA25762@aftab.osrc.amd.com> (raw)
In-Reply-To: <20120924201650.6574af64.conny.seidel@amd.com>
On Mon, Sep 24, 2012 at 08:16:50PM +0200, Conny Seidel wrote:
> Hi,
>
> On Mon, 24 Sep 2012 16:36:09 +0200
> Borislav Petkov <bp@amd64.org> wrote:
> >[ a?| ]
> >
> >Conny, would you test pls?
>
> Sure thing.
> Out of ~25 runs I only triggered it once, without the patch the
> trigger-rate is higher.
>
> [ 55.098249] Broke affinity for irq 81
> [ 55.105108] smpboot: CPU 1 is now offline
> [ 55.311216] smpboot: Booting Node 0 Processor 1 APIC 0x11
> [ 55.333022] LVT offset 0 assigned for vector 0x400
> [ 55.545877] smpboot: CPU 2 is now offline
> [ 55.753050] smpboot: Booting Node 0 Processor 2 APIC 0x12
> [ 55.775582] LVT offset 0 assigned for vector 0x400
> [ 55.986747] smpboot: CPU 3 is now offline
> [ 56.193839] smpboot: Booting Node 0 Processor 3 APIC 0x13
> [ 56.212643] LVT offset 0 assigned for vector 0x400
> [ 56.423201] Got negative events: -25
I see it:
__percpu_counter_sum does for_each_online_cpu without doing
get/put_online_cpus().
--
Regards/Gruss,
Boris.
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
GM: Alberto Bozzo
Reg: Dornach, Landkreis Muenchen
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next prev parent reply other threads:[~2012-09-24 18:19 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-24 10:23 divide error: bdi_dirty_limit+0x5a/0x9e Borislav Petkov
2012-09-24 10:38 ` Srivatsa S. Bhat
2012-09-24 11:05 ` Borislav Petkov
2012-09-24 11:13 ` Srivatsa S. Bhat
2012-09-24 11:34 ` Fengguang Wu
2012-09-24 11:51 ` Srivatsa S. Bhat
2012-09-24 12:20 ` Borislav Petkov
2012-09-24 12:29 ` Fengguang Wu
2012-09-24 12:56 ` Borislav Petkov
2012-09-24 18:54 ` Srivatsa S. Bhat
2012-09-24 14:23 ` Jan Kara
2012-09-24 14:36 ` Borislav Petkov
2012-09-24 18:16 ` Conny Seidel
2012-09-24 18:19 ` Borislav Petkov [this message]
2012-09-24 18:48 ` Srivatsa S. Bhat
2012-09-24 19:31 ` Borislav Petkov
2012-09-24 20:07 ` Jan Kara
2012-09-24 20:17 ` Jan Kara
2012-09-24 21:21 ` Andrew Morton
2012-09-24 22:27 ` Jan Kara
2012-09-25 8:57 ` Conny Seidel
2012-09-24 20:48 ` [PATCH] CPU hotplug, writeback: Don't call writeback_set_ratelimit() too often during hotplug Srivatsa S. Bhat
2012-09-28 12:27 ` Fengguang Wu
2012-09-28 14:46 ` Srivatsa S. Bhat
2012-10-03 23:11 ` Ni zhan Chen
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