linux-kernel - Re: Crash when copying from broken external hdd

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Date:	Mon, 01 Dec 2014 09:39:01 +0100
From:	Simon Danner <danner.simon@...il.com>
To:	Laurence Oberman <oberman.l@...il.com>
Cc:	Richard Weinberger <richard@....at>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	Jens Axboe <axboe@...nel.dk>,
	Christoph Hellwig <hch@...radead.org>
Subject: Re: Crash when copying from broken external hdd

Here is the log,
apparently i wasn't using 3.17.4 at that time, but since i got the same
crash with 3.18-git i think it shouldn't matter.


Thanks
Simon
On Sun, 2014-11-30 at 15:55 -0500, Laurence Oberman wrote:
> The BUG_ON is taken because
> blk_queued_rq(req)) returns true which means the request->queuelist is
> empty, i.e no more entries by the time the request is dereferenced
> 
> Can I get the messages file entries (last 100 lines) just prior to the
> panic, not the whole file.
> If its large attach  .gz and email to me.
> 
> Thanks
> 
> On Sun, Nov 30, 2014 at 11:42 AM, Richard Weinberger <richard@....at> wrote:
> > Am 30.11.2014 um 17:36 schrieb Simon Danner:
> >> Hi,
> >> here the two screenshots i could take, from 3.17.4 and 3.18 git.
> >
> > You're hitting BUG_ON(blk_queued_rq(req)); in blk_finish_request()
> >
> > Thanks,
> > //richard
> >
> >> Thanks
> >> Simon
> >>
> >> On Sun, 2014-11-30 at 10:58 -0500, Laurence Oberman wrote:
> >>> I need more of the stack if you have it, the screenshot is not attached.
> >>> Thanks
> >>> Laurence
> >>>
> >>> On Sun, Nov 30, 2014 at 6:11 AM, Richard Weinberger
> >>> <richard.weinberger@...il.com> wrote:
> >>>> On Sat, Nov 29, 2014 at 11:52 AM, Simon Danner <danner.simon@...il.com> wrote:
> >>>>> Hello,
> >>>>> i get the following crash after i try to copy files from a broken
> >>>>> external hdd to another external hdd.
> >>>>> It happens after a few minutes, with latest git and 3.17.4 from Arch.
> >>>>> Attached screenshot is from latest mainline git.
> >>>>>
> >>>>> i hope this can be fixed somehow,
> >>>>> Regards Simon Danner
> >>>>
> >>>> Can you decode scsi_requed_end+0x122?
> >>>> CC'ing block and scsi folks.
> >>>>
> >>>> --
> >>>> Thanks,
> >>>> //richard
> >>>> --
> >>>> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> >>>> the body of a message to majordomo@...r.kernel.org
> >>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >>


View attachment "crash.log" of type "text/x-log" (206159 bytes)