linux-kernel - Re: 2.6.25-mm1: not looking good

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Message-ID: <19f34abd0804180902k7a91ace3q84720e0352c3aa40@mail.gmail.com>
Date:	Fri, 18 Apr 2008 18:02:29 +0200
From:	"Vegard Nossum" <vegard.nossum@...il.com>
To:	"Jason Wessel" <jason.wessel@...driver.com>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"Andrew Morton" <akpm@...ux-foundation.org>, tglx@...utronix.de,
	penberg@...helsinki.fi, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	jmorris@...ei.org, sds@...ho.nsa.gov
Subject: Re: 2.6.25-mm1: not looking good

On Fri, Apr 18, 2008 at 4:47 PM, Vegard Nossum <vegard.nossum@...il.com> wrote:
>
> On 4/18/08, Jason Wessel <jason.wessel@...driver.com> wrote:
>  > Vegard Nossum wrote:
>  > > On Fri, Apr 18, 2008 at 3:02 PM, Jason Wessel
>  > > <jason.wessel@...driver.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
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