linux-kernel - Re: 2.6.34 Crash in dmaengine

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Message-Id: <20100621202854.de928e0a.akpm@linux-foundation.org>
Date:	Mon, 21 Jun 2010 20:28:54 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jeffrey Merkey <jeffmerkey@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	Dan Williams <dan.j.williams@...el.com>
Subject: Re: 2.6.34 Crash in dmaengine_put()

On Mon, 21 Jun 2010 20:57:40 -0600 Jeffrey Merkey <jeffmerkey@...il.com> wrote:

> If someone sets the IFF_UP flags in the netdev structure without going
> through ifup userspace stuff, during unregister of the the netdev
> the dmaengine-put code will decrement the reference counter negative,
> and crash at BUG! in the driver/dma/dmaengine.c code.  This seems
> busted.
> 

Please send a copy of the kernel BUG trace.
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