netdev - Re: WARNING: at net/ipv4/tcp_input.c:2054 tcp_mark_head

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Message-ID: <Pine.LNX.4.64.0803021432200.17919@kivilampi-30.cs.helsinki.fi>
Date:	Sun, 2 Mar 2008 14:38:30 +0200 (EET)
From:	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To:	Guillaume Chazarain <guichaz@...il.com>
cc:	Giangiacomo Mariotti <giangiacomo_mariotti@...oo.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Netdev <netdev@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: WARNING: at net/ipv4/tcp_input.c:2054 tcp_mark_head_lost()

On Sun, 2 Mar 2008, Guillaume Chazarain wrote:

> On Thu, Feb 28, 2008 at 9:22 AM, Ilpo Järvinen
<ilpo.jarvinen@...sinki.fi> wrote:
> >  [PATCH] TCP debug S+L (for 2.6.25-rcs, incompatible with 2.6.24.y)
>
> Bittorrenting with this patch applied floods my dmesg. Here is a log 
> dump:
> 
> http://guichaz.free.fr/tcp-debug.log.bz2 (2.3M compressed, 113M 
> uncompressed)

In future, please inline at least the first one of them, if not sure 
where to cut, too much won't hurt... :-)

> It does not contain any "KERNEL: assertion (packets <=
> tp->packets_out) failed at" line, so I'm afraid it's just noise.

At least it catches one bug which could cause that assertion (it is much 
more rigid than the assertion and thus it catched it even though you 
won't see that assertion to ever trigger :-)).

Could you next figure out what is at:
  [<c02e0f83>] tcp_ack+0x621/0xd2f



-- 
 i.