From owner-freebsd-current@FreeBSD.ORG Mon Dec 19 18:15:04 2005 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EFFCD16A420 for ; Mon, 19 Dec 2005 18:15:04 +0000 (GMT) (envelope-from tataz@tataz.chchile.org) Received: from smtp6-g19.free.fr (smtp6-g19.free.fr [212.27.42.36]) by mx1.FreeBSD.org (Postfix) with ESMTP id 19C6043D75 for ; Mon, 19 Dec 2005 18:15:02 +0000 (GMT) (envelope-from tataz@tataz.chchile.org) Received: from tatooine.tataz.chchile.org (vol75-8-82-233-239-98.fbx.proxad.net [82.233.239.98]) by smtp6-g19.free.fr (Postfix) with ESMTP id 53AA817F2C; Mon, 19 Dec 2005 19:15:00 +0100 (CET) Received: from obiwan.tataz.chchile.org (unknown [192.168.1.25]) by tatooine.tataz.chchile.org (Postfix) with ESMTP id BC27A9B6E7; Mon, 19 Dec 2005 18:14:34 +0000 (UTC) Received: by obiwan.tataz.chchile.org (Postfix, from userid 1000) id 8D346405A; Mon, 19 Dec 2005 19:14:34 +0100 (CET) Date: Mon, 19 Dec 2005 19:14:34 +0100 From: Jeremie Le Hen To: Travis Mikalson Message-ID: <20051219181434.GB3512@obiwan.tataz.chchile.org> References: <4394BECD.6090608@terranova.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4394BECD.6090608@terranova.net> User-Agent: Mutt/1.5.11 Cc: current@freebsd.org Subject: Re: -CURRENT crashdumps, mbuf corruption X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Dec 2005 18:15:05 -0000 Hi, Travis, On Mon, Dec 05, 2005 at 05:27:25PM -0500, Travis Mikalson wrote: > Hi, > > This looks like an mbuf corruption problem, can you take a look at these? > http://tog.net/crashdumps/ > > I've got two different ones, one seems to involve all of my network > interfaces and another seems just to involve if_ath. I'm not an expert > at reading this, but both crashes look like they choked on corrupt mbufs. > > I have WITNESS and INVARIANT running in that kernel, I don't know if > they are of any use for figuring this problem out. > > Is there any additional information available that I can retrieve that > can help? I'm told that mbuf corruption problems are very hard to track > down, I'm wondering if there's anything I can do. > > FYI, this box's job in life at the moment while I've got it as > stripped-down as possible is to shuffle packets back and forth between > one if_ath (in hostap mode) and one if_vr using if_bridge. ipfw is in > there somewhere but net.link.bridge.pfil_bridge is off and so is > net.link.ether.ipfw and net.link.bridge.ipfw. Most of the time a stack trace suffices to a commiter to identify the problem. Having a kernel dump is good, but it requires to download a heavy file and this is certainly why you have't got an answer yet. You should use kgdb on you memory dump to obtain a stack trace and post it here in conjunction to the FreeBSD version you are using. Note that making kernel memory dumps publicly available is a security problem as the memory may contain sensitive informations. Regards, -- Jeremie Le Hen < jeremie at le-hen dot org >< ttz at chchile dot org >