netdev - Re: tcp crash in net-2.6 tree

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Date:	Sat, 31 Mar 2007 00:10:54 +0200
From:	Thomas Graf <tgraf@...g.ch>
To:	David Miller <davem@...emloft.net>
Cc:	ilpo.jarvinen@...sinki.fi, akpm@...ux-foundation.org,
	netdev@...r.kernel.org
Subject: Re: tcp crash in net-2.6 tree

* David Miller <davem@...emloft.net> 2007-03-30 14:43
> Let's not speculate, let's find out for sure if snd_una is
> surpassing high_seq while we're in this state.
> 
> Andrew please give this debugging patch a spin, and also what
> is your workload?  I'd like to play with it too.
> 
> I've tried to code this patch so that if the bug triggers your
> machine shouldn't crash and burn completely, just spit out the
> log message.

I'm running into the same bug as Andew, i was able to reproduce
using Dave's patch within minutes:

TCP BUG: high_seq==NULL [c3c9cc54] q[c3c94edc] t[c3c9cc54]

The after(snd_una, high_seq) check is not triggered.
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