netdev - Re: ixgbe: panic in ixgbe_clean_rx

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Message-ID:  <loom.20090727T214746-75@post.gmane.org>
Date:	Mon, 27 Jul 2009 21:50:31 +0000 (UTC)
From:	Todd Merritt <tmerritt@...il.arizona.edu>
To:	netdev@...r.kernel.org
Subject:  Re: ixgbe: panic in ixgbe_clean_rx_irq()

Waskiewicz Jr, Peter P <peter.p.waskiewicz.jr <at> intel.com> writes:

> 
> On Fri, 24 Jul 2009, Jesper Dangaard Brouer wrote:
> 
> > On Thu, 2009-07-23 at 17:21 +0200, Jesper Dangaard Brouer wrote:
> > > I'm going to run a test with a no-preempt kernel over night...
> > 
> > The no-preempt kernel has been stable for 17 hours, while running a four
> > times 10GbE pktgen load test (using 1024 bytes packets).
> > 
> > Kernel git version (git describe):
> >  v2.6.31-rc1-932-g8e321c4
> > 
> > Git ("git log e594e96..8e321c4 drivers/net/ixgbe") reports not changes
> > to the ixgbe driver between these two kernel versions.
> 
> Thanks for the additional info Jesper.  This is definately a good data 
> point.  I'm not sure where to go with the preemption debugging at this 
> point with our driver under heavy load.  We're still trying to repro here.  
> I'll keep digging around though in the meantime.
> 
> This is the second preemption-induced bug from ixgbe we've had reported in 
> a few days.  Eek!
> 
We're getting a panic in the same function with the stable version of the ixgbe
driver 2.0.38.2-1 on redhat 5 kernel-2.6.18-128.1.10.el5.  Is there a dev
release of the driver that might have a fix in it ?

Thanks,
Todd



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