From owner-freebsd-stable@FreeBSD.ORG  Mon Dec  6 23:48:02 2004
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id DD9E516A4CE
	for <freebsd-stable@freebsd.org>;
	Mon,  6 Dec 2004 23:48:02 +0000 (GMT)
Received: from elvis.mu.org (elvis.mu.org [192.203.228.196])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 94AC343D68
	for <freebsd-stable@freebsd.org>;
	Mon,  6 Dec 2004 23:48:02 +0000 (GMT)	(envelope-from ps@freebsd.org)
Received: from [216.145.52.43] (butter.corp.yahoo.com [216.145.52.43])
	by elvis.mu.org (Postfix) with ESMTP id 843B35CAF2;
	Mon,  6 Dec 2004 15:48:02 -0800 (PST)
Message-ID: <41B4EFB2.3020704@freebsd.org>
Date: Mon, 06 Dec 2004 15:48:02 -0800
From: Paul Saab <ps@freebsd.org>
User-Agent: Mozilla Thunderbird 0.9 (X11/20041108)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Arjan Van Leeuwen <avleeuwen@gmail.com>
References: <41B4CCFA.6070202@fastclick.com>
	<d86b487304120615315d84e4b9@mail.gmail.com>
In-Reply-To: <d86b487304120615315d84e4b9@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
cc: Jeff Behl <jbehl@fastclick.com>
cc: freebsd-stable@freebsd.org
Subject: Re: reproducible kernel panic
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Production branch of FreeBSD source code
	<freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 06 Dec 2004 23:48:03 -0000

Arjan Van Leeuwen wrote:

> I had a panic that looked a lot like this (panic in swi, came up when
>
>I had some network traffic), and it's also been reported by other
>people than me. Turning of SACK seems to work for most people (at
>least it worked for me). Put net.inet.tcp.sack.enable=0 in
>/etc/sysctl.conf.
>  
>
And how exactly is this supposed to help anyone fix the problem.  If you 
provide crashdumps then solving the problem becomes much easier, but 
nothing will get fixed if you just turn it off.