linux-kernel - Re: [1/2] 2.6.21-rc7: known regressions

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Message-ID: <4623EE59.7090005@redhat.com>
Date:	Mon, 16 Apr 2007 17:44:57 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Adrian Bunk <bunk@...sta.de>
CC:	Andrew Morton <akpm@...ux-foundation.org>, perex@...e.cz,
	alsa-devel@...a-project.org,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [1/2] 2.6.21-rc7: known regressions

Adrian Bunk wrote:

> This email lists some known regressions in Linus' tree compared to 2.6.20.
> 
> Subject    : snd_intel8x0: divide error: 0000
> References : http://lkml.org/lkml/2007/3/5/252
> Submitter  : Michal Piotrowski <michal.k.k.piotrowski@...il.com>
> Status     : unknown
> 

Oops is in sound/pci/intel8x0.c::snd_intel8x0_update(), part of
the interrupt handler:

Line 751:

        ichdev->position += step * ichdev->fragsize1;
        if (! chip->in_measurement)
                ichdev->position %= ichdev->size;

ichdev->size is 0. Interrupt happened upon request_irq().

Does chip->in_measurement need to be reset because this is a
crashdump kernel?
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