From: Patrick Mansfield <patmans@us.ibm.com>
To: "Vladimir G. Ivanovic" <vladimir@acm.org>
Cc: linux-scsi@vger.kernel.org
Subject: Re: sym53c8xx: 'echo "scsi dump 1" > /proc/scsi/scsi' generates an oops
Date: Wed, 29 May 2002 10:44:51 -0700 [thread overview]
Message-ID: <20020529104451.A5229@eng2.beaverton.ibm.com> (raw)
In-Reply-To: <200205272332.g4RNWgi22980@bach.leonora.org>; from vladimir@acm.org on Mon, May 27, 2002 at 04:32:42PM -0700
On Mon, May 27, 2002 at 04:32:42PM -0700, Vladimir G. Ivanovic wrote:
> The command
>
> echo "scsi dump 1" > /proc/scsi/scsi
>
> generated an oops (syslog entries appended) on my SMP machine running a
> 2.4.18 custom kernel derived from Red Hat's 2.4.18-4 kernel. My SCSI
> controller is an sym53c1010-33, and its driver is
> sym53c8xx-1.7.3c-20010512.
>
> Is this (1) operator error, (2) a high/mid/low-level SCSI problem, or
> (3) some other kind of kernel problem that should be reported on the
> linux-kernel list?
>
> If some more information is needed, please let me know.
>
> Thanks.
>
> --- Vladimir
>
> P.S. I know, if it hurts, don't do that. ;-)
It's a mid layer SCSI bug, it improperly references the queue:
queue_head = &blk_dev[i].request_queue.queue_head;
It should really be something like:
queue_head = SDpnt->request_queue;
Better yet the code should be deleted, as it is also dumping all queues for
each Scsi_Device. The code is gone in the current 2.5.x.
-- Patrick Mansfield
prev parent reply other threads:[~2002-05-29 17:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-27 23:32 sym53c8xx: 'echo "scsi dump 1" > /proc/scsi/scsi' generates an oops Vladimir G. Ivanovic
2002-05-29 17:44 ` Patrick Mansfield [this message]
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