> -----Original Message-----
> From: Jens Axboe [mailto:[email protected]]
> Sent: Monday, July 16, 2007 4:18 AM
> To: Flavio Curti
> Cc: Nick Piggin; Michal Piotrowski; Flavio Curti;
> [email protected]; Promise_Linux
> Subject: Re: panics with 16port Promise Supertrack EX Controller
>
>
> On Sun, Jul 15 2007, Flavio Curti wrote:
> > Hello
> >
> > On Mon, Jul 09, 2007 at 11:59:36AM +1000, Nick Piggin wrote:
> > > >Jul 8 00:19:13 dorade.cyberlink.ch EFLAGS: 00210046
> > > >(2.6.22-rc7-dorade #1)
> > > >>The machine panics
> > > >>after some days of running fine, the machine inst heavy loaded.
> > > >>The Controller detects as stex device:
> > > >kernel BUG at block/as-iosched.c:1084!
> > > >
> > > >BUG_ON(RB_EMPTY_ROOT(&ad->sort_list[REQ_ASYNC]));
> > > Could be a bug in the driver that just happens to be
> caught by AS checks.
> > > If you could test another scheduler (boot with
> elevator=deadline or
> > > elevator=cfq),
> > > it might help give us an idea.
> >
> > Ok, I now switched to cfg, and the machine panicd again.
> Panic attached.
> > Any help is appreciated.
>
> It really looks like a stex bug - perhaps it's doing double
> completions
> of a request?
>
I will come up with something related to tag lock, and see
what happens after that.
Ed Lin
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