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Date: Thu, 7 Jun 2007 14:27:24 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: Roger Miranda <rmiranda@digitalrelay.ca>
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Cc: freebsd-stable@freebsd.org, Kris Kennaway <kris@obsecurity.org>
Subject: Re: Hard Hang, nothing in logs / no panics
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On Thu, Jun 07, 2007 at 08:23:32AM -0500, Roger Miranda  wrote:
> On Friday 11 May 2007 16:47, Kris Kennaway wrote:
> > > Am I possible looking at a hardware issue?  If so
> > > what is the best way to test for it?
> >
> > If that doesn't work then in my experience it is likely to be
> > hardware-related.  The usual debugging procedure then involves trying
> > to replicate on an unrelated machine, and/or swapping out hardware
> > components.
> 
> Kris,
> 
> Sorry for the time delay.
> 
> But we have confirmed this is not a hardware issue.  We have is dead locking 
> across multiple systems, when bridge a moderate amount of tcp connections.
> 
> I have no idea how to debug this.
> 
> Could it be an issues with if_config of pf?  We are using the latest drivers 
> form intel.  But have ruled it out as being an driver or network card related 
> problem.

And to confirm, WITNESS finds nothing and you are unable to break to
DDB even with STOP_NMI?

Kris