linux-kernel - Re: [regression] CD-ROM polling blocks suspend on some machines

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Message-ID: <20110904150525.GE25587@elie>
Date:	Sun, 4 Sep 2011 10:05:25 -0500
From:	Jonathan Nieder <jrnieder@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Jens Axboe <axboe@...nel.dk>, Amit Shah <amit.shah@...hat.com>,
	David Zeuthen <zeuthen@...il.com>,
	Martin Pitt <martin.pitt@...ntu.com>,
	Kay Sievers <kay.sievers@...y.org>,
	linux-kernel@...r.kernel.org, Jean Schurger <jean@...urger.org>,
	Jan Lübbe <jluebbe@...ian.org>,
	Matthijs Kooijman <matthijs@...in.nl>,
	Jameson Graef Rollins <jrollins@...estructure.net>,
	Nacho Barrientos Arias <nacho@...ian.org>
Subject: Re: [regression] CD-ROM polling blocks suspend on some machines

Tejun Heo wrote:
> On Sat, Sep 03, 2011 at 05:14:56PM -0500, Jonathan Nieder wrote:

>> Various people[1] have been noticing a race (or races?) in which the
>> cdrom_id and scsi_id programs from udev can get stuck in the D state
[...]
> Can you please build vanilla kernel with CONFIG_FRAME_POINTER turned
> on, reproduce the problem and attach full dmesg output?

Thanks, Tejun.  I haven't been able to reproduce it here, but I'd be
happy to help anyone cc-ed wanting to do that who has questions (feel
free to email me privately).
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