linux-kernel - Re: panics with 16port Promise Supertrack EX Controller

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Message-Id: <20070715173515.49883f4a.randy.dunlap@oracle.com>
Date:	Sun, 15 Jul 2007 17:35:15 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Flavio Curti <lists.fcu@...way.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: panics with 16port Promise Supertrack EX Controller

On Mon, 16 Jul 2007 00:51:55 +0200 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.

Make sure that you switched to "cfq" and not "cfg".

---
~Randy
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