linux-kernel - Re: [PATCH] mmc: prevent dangling block device from accessing stale queues

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Message-ID: <20090604191513.GA5702@console-pimps.org>
Date:	Thu, 4 Jun 2009 20:15:13 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Stefan Bader <stefan.bader@...onical.com>
Cc:	Pierre Ossman <pierre@...man.eu>, Jens Axboe <axboe@...nel.dk>,
	linux-kernel@...r.kernel.org, Andy Whitcroft <apw@...onical.com>
Subject: Re: [PATCH] mmc: prevent dangling block device from accessing
	stale queues

On Thu, Jun 04, 2009 at 09:00:42PM +0200, Stefan Bader wrote:
>
> Hm, not sure this is what you wanted to know... On the launchpad report 
> there are logs which I took with lots of printk's enabled. This shows that 
> after resume the queue receives a request from mmcblk0 (which no longer 
> exists) but uses the same pointer as mmcblk1 which was just created.
>

Maybe I'm missing something, but why is the device instance being
destroyed during a suspend? E.g why do you have mmcblk0 before suspend and
mmcblk1 after suspend?
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