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

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Message-ID: <Pine.LNX.4.64.0802272120430.1741@kivilampi-30.cs.helsinki.fi>
Date:	Wed, 27 Feb 2008 21:29:08 +0200 (EET)
From:	"Ilpo JÃ¤rvinen" <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 Wed, 27 Feb 2008, Guillaume Chazarain wrote:

> On Wed, Feb 27, 2008 at 10:29 AM, Ilpo Järvinen 
> <ilpo.jarvinen@...sinki.fi> wrote:
> > I did in the past a debug patch
> >  that verifies TCP's write queue state by the hard way, ie., by 
> >  bruteforce
> >  walking often enough to catch inconsistencies early enough to find 
> >  out
> >  the root cause.
> 
> Are you talking about this one:
> http://marc.info/?l=linux-netdev&m=119482084511178 ?
> I attached a forward port to current git.

No, I'd much more complete set of tests than in that one.

> I am using this patch, and caught this maybe related error while 
> Bittorrenting:
>
> KERNEL: assertion (packets <= tp->packets_out) failed at
> /home/g/linux-2.6/net/ipv4/tcp_input.c (2145)
> KERNEL: assertion (packets <= tp->packets_out) failed at
> /home/g/linux-2.6/net/ipv4/tcp_input.c (2145)
> ------------[ cut here ]------------
> WARNING: at /home/g/linux-2.6/net/ipv4/tcp_input.c:2515
> tcp_fastretrans_alert+0xa5/0xa4f()

You seem to be good in catching these... :-)


-- 
 i.