linux-kernel - Re: 2.6.19-rc3-git7: scsi_device_unbusy: inconsistent lock state

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Date:	Mon, 30 Oct 2006 19:56:51 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Mark Lord <liml@....ca>,
	IDE/ATA development list <linux-ide@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>, mingo@...e.hu
Subject: Re: 2.6.19-rc3-git7: scsi_device_unbusy: inconsistent lock state

On Mon, Oct 30 2006, Arjan van de Ven wrote:
> 
> > (gdb) l *cfq_set_request+0x33e
> > 0xc021780e is in cfq_set_request (block/cfq-iosched.c:1224).
> > 1219            if (unlikely(!cfqd))
> > 1220                    return;
> > 1221
> > 1222            spin_lock(cfqd->queue->queue_lock);
> 
> this looks interesting... and buggy ;)
> (this is changed_ioprio() )

Yeah it is, changed_ioprio() used to be called under local_irq_save(),
but it's not anymore.

-- 
Jens Axboe

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