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Date: Mon, 23 Apr 2007 22:17:26 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: William Heimbigner <icxcnika@mar.tar.cc>
Cc: linux-kernel@vger.kernel.org, Peter Osterlund <petero2@telia.com>,
       Jens Axboe <jens.axboe@oracle.com>
Subject: Re: BUG: Null pointer dereference in fs/open.c
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On Tue, 24 Apr 2007 05:10:04 +0000 (GMT) William Heimbigner <icxcnika@mar.tar.cc> wrote:

> > --- a/drivers/block/pktcdvd.c~packet-fix-error-handling
> > +++ a/drivers/block/pktcdvd.c
> > @@ -777,7 +777,8 @@ static int pkt_generic_packet(struct pkt
> > 		rq->cmd_flags |= REQ_QUIET;
> >
> > 	blk_execute_rq(rq->q, pd->bdev->bd_disk, rq, 0);
> > -	ret = rq->errors;
> > +	if (rq->errors)
> > +		ret = -EIO;
> > out:
> > 	blk_put_request(rq);
> > 	return ret;
> > _
> 
> This patch fixes (or conceals?) the oops.
> 

Fixes.  But does the packet driver actually work OK for you?  Writes
files and stuff like that?