From owner-svn-src-head@FreeBSD.ORG Fri Oct 29 14:10:07 2010 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1EF241065672 for ; Fri, 29 Oct 2010 14:10:07 +0000 (UTC) (envelope-from bz@FreeBSD.org) Received: from mail.cksoft.de (mail.cksoft.de [IPv6:2001:4068:10::3]) by mx1.freebsd.org (Postfix) with ESMTP id 98DD18FC16 for ; Fri, 29 Oct 2010 14:10:06 +0000 (UTC) Received: from localhost (amavis.fra.cksoft.de [192.168.74.71]) by mail.cksoft.de (Postfix) with ESMTP id 986C241C7CB; Fri, 29 Oct 2010 16:10:05 +0200 (CEST) X-Virus-Scanned: amavisd-new at cksoft.de Received: from mail.cksoft.de ([192.168.74.103]) by localhost (amavis.fra.cksoft.de [192.168.74.71]) (amavisd-new, port 10024) with ESMTP id nssX-RrwcSvb; Fri, 29 Oct 2010 16:10:05 +0200 (CEST) Received: by mail.cksoft.de (Postfix, from userid 66) id 31DE841C7C9; Fri, 29 Oct 2010 16:10:05 +0200 (CEST) Received: from maildrop.int.zabbadoz.net (maildrop.int.zabbadoz.net [10.111.66.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.int.zabbadoz.net (Postfix) with ESMTP id 5AC5D4448F3; Fri, 29 Oct 2010 14:06:25 +0000 (UTC) Date: Fri, 29 Oct 2010 14:06:24 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@maildrop.int.zabbadoz.net To: Mike Tancsa In-Reply-To: <201010291342.o9TDggVQ062469@lava.sentex.ca> Message-ID: <20101029135858.E66242@maildrop.int.zabbadoz.net> References: <0C099B90-AFB9-422F-AB75-AFC138A36D20@berlin.ccc.de> <20101029013606.I66242@maildrop.int.zabbadoz.net> <201010291342.o9TDggVQ062469@lava.sentex.ca> X-OpenPGP-Key: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: Denis Ahrens , svn-src-head@FreeBSD.org, Philipp =?iso-8859-1?Q?W=FCnsche?= , Randy Bush Subject: Re: pending em0 commits for FreeBSD 8.1 STABLE X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Oct 2010 14:10:07 -0000 On Fri, 29 Oct 2010, Mike Tancsa wrote: Hi Mike, > Actually, > I dont think its an em bug as I can trigger this crash with the igb > nic. Perhaps these are 2 different issues being hit ? Anyways, I tried with Yes what you have down there looks *sigh* hopefully like a different issue thought it mbuf fiddling again but way further up the stack. Could you please concentrate on only reproducing the if: discard frame w/o packet header issue rather than breaking things left and right as well? ;-) > igb from HEAD in case there is some common code path between em and igb > (2.0.1 vs 2.0.4). But the issue is still there > > In the netperf cluster its trivial to trigger this bug. Try this on camel and > leopard1. Note bear1 is still on the console debugger as well in case you > want to compare 2 different machines. I shall when returning home tonight. > camel1# route add -inet6 2607:f3e0:0:80::290 2607:f3e0:9::107 > add host 2607:f3e0:0:80::290: gateway 2607:f3e0:9::107 > camel1# > > Then start a ping on camel1. Then, with the ping is going, on leopard1 do an > ifconfig em0 down. A few seconds later, the panic below just to confirm, it's camel1 that paniced in this test, right? > ip6_input() at ip6_input+0x28f Could you look that up? feel free to reboot camel1. I would guess it's the MCLGET() in the code with the "L2 bridge ..." comment on top? Probably a m_clget() call if you look it up in gdb. /bz -- Bjoern A. Zeeb Welcome a new stage of life. Going to jail sucks -- All my daemons like it! http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/jails.html