[dm-devel] [BUG REPORT] Kernel panic on 3.9.0-rc7-4-gbb33db7

Jens Axboe axboe at kernel.dk
Thu Apr 18 18:13:18 UTC 2013


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




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