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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: Core scsi layer crashes in 2.6.8.1
Date: Wed, 29 Sep 2004 14:24:10 +0100	[thread overview]
Message-ID: <1096464245.15907.27.camel@localhost.localdomain> (raw)
In-Reply-To: <1096467125.2028.11.camel@mulgrave>

On Mer, 2004-09-29 at 15:11, James Bottomley wrote:
> What was the oops?
> 
> I have a theory that we should be taking a device reference before
> waking up the error handler, otherwise host removal can race with error
> handling.

The sequence I scribbled down from the console was

        Illegal state transition Cancel->Offline
        Badness in scsi_device_set_state
                scsi_device_set_state
                scsi_unjam_host
                scsi_error_handler
 
        badness in kref_get
                kobject_get, get_device, scsi_request_fn
                blk_insert_request, scsi_queue_insert
                scsi_eh_flush_done_q, scsi_unjam_host
                scsi_error_handler
 
        OOPS scsi_device_dev_release
                device_release
                kobject_cleanup
                kobject_release
                kref_put
                scsi_request_fn

Alan


  reply	other threads:[~2004-09-29 14:26 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-28 20:03 Core scsi layer crashes in 2.6.8.1 Alan Cox
2004-09-29 14:11 ` James Bottomley
2004-09-29 13:24   ` Alan Cox [this message]
2004-09-29 14:34     ` James Bottomley
2004-09-29 14:27   ` Matthew Wilcox
2004-10-05 11:49   ` Anton Blanchard
2004-10-05 13:56     ` James Bottomley
2004-10-05 14:44       ` Mark Lord
2004-10-05 14:56         ` James Bottomley
2004-10-05 15:46           ` Mark Lord
2004-10-05 15:49           ` Oliver Neukum
2004-10-05 15:54             ` James Bottomley
2004-10-05 15:57               ` Mark Lord
2004-10-05 16:01                 ` James Bottomley
2004-10-05 16:53                 ` Jeff Garzik
2004-10-05 16:01               ` Oliver Neukum
2004-10-05 16:07                 ` James Bottomley
2004-10-05 16:26                   ` Oliver Neukum
2004-10-05 16:38                     ` James Bottomley

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