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Date: Fri, 18 Apr 2008 18:02:29 +0200
From: "Vegard Nossum" <vegard.nossum@gmail.com>
To: "Jason Wessel" <jason.wessel@windriver.com>
Subject: Re: 2.6.25-mm1: not looking good
Cc: "Ingo Molnar" <mingo@elte.hu>, "Andrew Morton" <akpm@linux-foundation.org>,
       tglx@linutronix.de, penberg@cs.helsinki.fi, linux-usb@vger.kernel.org,
       linux-kernel@vger.kernel.org, linux-mm@kvack.org, jmorris@namei.org,
       sds@tycho.nsa.gov
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On Fri, Apr 18, 2008 at 4:47 PM, Vegard Nossum <vegard.nossum@gmail.com> wrote:
>
> On 4/18/08, Jason Wessel <jason.wessel@windriver.com> wrote:
>  > Vegard Nossum wrote:
>  > > On Fri, Apr 18, 2008 at 3:02 PM, Jason Wessel
>  > > <jason.wessel@windriver.com> wrote:
>  > >>  I assume this was SMP?
...

>  But booting with nosmp on real hardware gets easily above 100,000
>  iterations of the loop (before I reboot), so it seems to be related to
>  that, anyway.

It gets stuck in kgdb_roundup_cpus(), verified by putting a printk()
before and after this call (in kgdb_handle_exception()). Simple, but
effective :-)


Vegard

-- 
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
	-- E. W. Dijkstra, EWD1036