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Message-ID: <41840b750610110619v56d3efd5h7a05cfb42cb21464@mail.gmail.com>
Date: Wed, 11 Oct 2006 15:19:58 +0200
From: "Shem Multinymous" <multinymous@gmail.com>
To: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
       hdaps-devel@sourceforge.net
Subject: Re: Debugging strange system lockups possibly triggered by ATA commands
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References: <741Eo-2m9-5@gated-at.bofh.it> <742hc-4n3-25@gated-at.bofh.it>
	 <87ejtgatgp.fsf@denkblock.local>
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Hi Elias,

On 10/10/06, Elias Oltmanns <oltmanns@uni-bonn.de> wrote:
> Testing the queue handling stuff without actually issuing any
> commands seems rather difficult to me as its the callback mechanism
> used to freeze the queue after command completion which I'd really
> like to test. If I don't issue any command, I don't know how to test
> whether the callback procedure and all the rest works as expected.

Try doing a dump_stack(), and nothing else, in the callback. This may
provide some hint.

(Remember to increase console_loglevel so you can see the result on
the console before the hang.)

  Shem
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