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Date:	Wed, 7 Dec 2011 15:39:13 +0100
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	Robert Richter <robert.richter@....com>
Cc:	Jerome Glisse <j.glisse@...il.com>,
	Christoph Lameter <cl@...ux.com>,
	"Alex, Shi" <alex.shi@...el.com>, Dave Airlie <airlied@...hat.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	dri-devel@...ts.freedesktop.org, Pekka Enberg <penberg@...nel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Matt Mackall <mpm@...enic.com>, tj@...nel.org,
	Alex Deucher <alexander.deucher@....com>
Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413

On 2011.12.07 at 15:32 +0100, Robert Richter wrote:
> On 02.12.11 21:48:20, Markus Trippelsdorf wrote:
> > BTW I always see (mostly only on screen, sometimes in the logs):
> > 
> > [Firmware Bug]: cpu 2, try to use APIC500 (LVT offset 0) for vector 0x10400, but the register is already in use for vector 0xf9 on another cpu
> > [Firmware Bug]: cpu 2, IBS interrupt offset 0 not available (MSRC001103A=0x0000000000000100)
> > [Firmware Bug]: using offset 1 for IBS interrupts
> > [Firmware Bug]: workaround enabled for IBS LVT offset
> > perf: AMD IBS detected (0x0000001f) 
> > 
> > But I hope that it is only a harmless warning. 
> > (perf Instruction-Based Sampling)
> 
> Yes, the message always apears on AMD family 10h. Nothing to worry
> about.
> 
> A patch is on the way to soften the message to not scare the people:
> 
>  http://git.kernel.org/?p=linux/kernel/git/tip/tip.git;a=commit;h=16e5294e5f8303756a179cf218e37dfb9ed34417

Thanks.
It's already in mainline and the message is gone now.

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=16e5294e5f8303756a179cf218e37dfb9ed34417

-- 
Markus
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