linux-kernel - Re: Kernel panic - not syncing: Attempted to kill the idle task!

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Message-ID: <20120611135140.GA3913@x1.osrc.amd.com>
Date:	Mon, 11 Jun 2012 15:51:40 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Zhouping Liu <zliu@...hat.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Hillf Danton <dhillf@...il.com>, hi3766691@...il.com,
	LKML <linux-kernel@...r.kernel.org>,
	Andreas Herrmann <andreas.herrmann3@....com>
Subject: Re: Kernel panic - not syncing: Attempted to kill the idle task!

On Mon, Jun 11, 2012 at 03:27:48PM +0200, Peter Zijlstra wrote:
> On Fri, 2012-06-08 at 21:38 -0400, Zhouping Liu wrote:
> > # cat /sys/devices/system/node/node*/distance
> > 10 17 17 24 24 24 30 30
> > 18 10 30 18 18 24 24 24
> > 18 24 10 24 24 17 30 30
> > 24 18 23 10 24 17 17 30
> > 24 17 24 24 10 18 30 18
> > 31 24 17 18 18 10 24 24
> > 30 24 30 17 24 24 10 18
> > 30 24 30 24 17 24 17 10 
> 
> You have to be kidding me right? That thing is a complete trainwreck,
> what idiot vendor did this?

HP ProLiant DL785 G6

http://www.sanweiying.org/download/debug_kernel/kernel_panic_48d212a2eecaca

contains dmesg and there's some serious fun with how the box boots:

node 0, cpus: 0, 8, 16...
node 1, cpus: 1, 9, 17...

> If you boot that machine again, does it have the same stupid table or
> are we staring at white-noise?

I'll bet it does.

-- 
Regards/Gruss,
Boris.
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