From: David Miller <davem@davemloft.net>
To: tgraf@suug.ch
Cc: ilpo.jarvinen@helsinki.fi, akpm@linux-foundation.org,
netdev@vger.kernel.org
Subject: Re: tcp crash in net-2.6 tree
Date: Fri, 30 Mar 2007 15:15:01 -0700 (PDT) [thread overview]
Message-ID: <20070330.151501.98861701.davem@davemloft.net> (raw)
In-Reply-To: <20070330221053.GR521@postel.suug.ch>
From: Thomas Graf <tgraf@suug.ch>
Date: Sat, 31 Mar 2007 00:10:54 +0200
> * David Miller <davem@davemloft.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.
So tp->high_seq points to the tail packet end sequence.
Ilpo does this clear things up?
next prev parent reply other threads:[~2007-03-30 22:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-30 6:09 tcp crash in net-2.6 tree Andrew Morton
2007-03-30 14:33 ` Ilpo Järvinen
2007-03-30 16:18 ` Andrew Morton
2007-03-30 21:43 ` David Miller
2007-03-30 22:06 ` Andrew Morton
2007-03-30 22:12 ` David Miller
2007-03-30 22:10 ` Thomas Graf
2007-03-30 22:15 ` David Miller [this message]
2007-03-31 10:19 ` ijjarvin
2007-04-02 8:38 ` Ilpo Järvinen
2007-04-02 9:02 ` David Miller
2007-04-02 21:06 ` Thomas Graf
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