From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jens Axboe <axboe@kernel.dk>
Subject: Re: [BUG REPORT] Kernel panic on 3.9.0-rc7-4-gbb33db7
Date: Thu, 18 Apr 2013 11:13:18 -0700
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To: Tejun Heo <tj@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>, Wanlong Gao <gaowanlong@cn.fujitsu.com>, Steven Rostedt <rostedt@goodmis.org>, Namhyung Kim <namhyung@gmail.com>, Alasdair G Kergon <agk@redhat.com>, "dm-devel@redhat.com" <dm-devel@redhat.com>, Neil Brown <neilb@suse.de>, LKML <linux-kernel@vger.kernel.org>
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On Thu, Apr 18 2013, Tejun Heo wrote:
> On Thu, Apr 18, 2013 at 10:39:00AM -0700, Jens Axboe wrote:
> > > If I'm not mistaken, it seems like we have a bio which has 1 as its
> > > ->bi_bdev.  Ummm.... no idea whatsoever how that can happen tho right
> > > now.  Looking into it.
> > 
> > Yep, thanks Linus for that hint... Must be someone abusing it for a
> > flag field post submission? Crazy.
> 
> Let's hope that's not the case because there'll be blood if it is. :)

Yeah, it's beyond the amount of crazy I've come to expect from various
random users of IO interfaces :-)

-- 
Jens Axboe