netdev - Re: BUG: IPv4: Attempt to release TCP socket in state 1

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Date:	Mon, 04 Mar 2013 21:07:26 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Cong Wang <xiyou.wangcong@...il.com>
Cc:	dormando <dormando@...ia.net>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: BUG: IPv4: Attempt to release TCP socket in state 1

On Tue, 2013-03-05 at 11:47 +0800, Cong Wang wrote:
> (Cc'ing the right netdev mailing list...)
> 
> On 03/05/2013 08:01 AM, dormando wrote:
> > Hi!
> >
> > I have a (core lockup?) with 3.7.6+ and 3.8.2 which appears to be under
> > ixgbe. The machine appears to still be up but network stays in a severely
> > hobbled state. Either lagging or not responding to the network at all.
> >
> > On a new box the hang happens within 8-24 hours of giving it production
> > network traffic. On an older machine (6 cores instead of 8, etc) it can
> > run for a week or more before hanging.
> >
> > The hang from 3.7 might be slightly different than 3.8. They seem to be
> > mostly the same aside from 3.8 hanging in the GRO path. Don't see anything
> > obvious in 3.9-rc1 that would fix it, and haven't tried 3.9-rc1.
> >
> > I've not yet figured out how to reproduce outside of production (as
> > always, sigh). This doesn't seem to happen with 3.6.6, but we have
> > different and less frequent kernel panics there.
> >

Dornando, do you use any kind of special setup, external modules, 
or netfilter ? (iptables-save output would help)

Is it a pristine kernel, or a modified one ?



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