From owner-freebsd-current@FreeBSD.ORG Sat May 30 00:05:52 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6394F106566B for ; Sat, 30 May 2009 00:05:52 +0000 (UTC) (envelope-from deeptech71@gmail.com) Received: from mail-bw0-f213.google.com (mail-bw0-f213.google.com [209.85.218.213]) by mx1.freebsd.org (Postfix) with ESMTP id D62EB8FC12 for ; Sat, 30 May 2009 00:05:51 +0000 (UTC) (envelope-from deeptech71@gmail.com) Received: by bwz9 with SMTP id 9so6553395bwz.43 for ; Fri, 29 May 2009 17:05:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=WzsxBmzphbRACFwn/nXpS8inqAPO2Qot7hs7P2ZkYvA=; b=X/BE3PiYD7pNY7TvEsLO8FalEvNsDGLEX+wE/9AZCTy9wIQx9FAmjigrQhQ5w33nt+ bMGWCq/OeSDxgCA3LYPbnT1UVaj4BE3fKpNbWiJQo/nKx7A38RY3OVPpg77jGDuurttG yIlhLae7g/gFY2zVF6UB8A4RJRw5N8RHZWdrE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; b=joBlg94FEOkrIyvszr5Q1rDtxp4Lfa9qANsiNViZFH+QXlIegpQyotppKPtgnI5I6C rK446AD3eYDGoQhRwUfjAO0o2qAf2U3T8DSGEeuhR37Pn/qP4i6twNgcqpuL0GVY5QWP 7K07NULBhhxdo2Wa5vFM3+zdhj2vYwT5IzcEU= Received: by 10.204.66.17 with SMTP id l17mr2963810bki.44.1243641950761; Fri, 29 May 2009 17:05:50 -0700 (PDT) Received: from ?157.181.96.136? (quark.teteny.elte.hu [157.181.96.136]) by mx.google.com with ESMTPS id 13sm3284993fks.22.2009.05.29.17.05.49 (version=SSLv3 cipher=RC4-MD5); Fri, 29 May 2009 17:05:50 -0700 (PDT) Message-ID: <4A20791D.5070209@gmail.com> Date: Sat, 30 May 2009 02:09:01 +0200 From: deeptech71@gmail.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.21) Gecko/20090303 SeaMonkey/1.1.15 MIME-Version: 1.0 To: freebsd-current@freebsd.org References: <4A1DD57A.7010704@gmail.com> <4A1E9831.4010606@incunabulum.net> <4A1EC8FB.6090206@gmail.com> <4A1FBFF5.6090103@incunabulum.net> In-Reply-To: <4A1FBFF5.6090103@incunabulum.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: panic: igmp_v3_dispatch_general_query: called when version 2 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: Sat, 30 May 2009 00:05:52 -0000 Bruce Simpson wrote: > I may not get free time to fix this right away, are you able to test a > patch when I can make one available? Sure. > It would be helpful if you could confirm, with a tcpdump capture forked > from single user mode, if your FreeBSD host is receiving an IGMPv2 query > when this problem is triggered. How do I do that? But it's not "when" it is triggered, but rather "if... ever". > It sounds like your university LAN may well have an IGMPv2 capable > multicast router present on the network. If you could double confirm > this, via packet capture, that would be great. Does this dump(snip) tell? 18:21:19.837291 IP binhlinh.teteny.bme.hu.50530 > 224.0.0.253.3544: UDP, length 40 18:21:23.450396 IP imperator.teteny.bme.hu.51605 > 224.0.0.252.5355: UDP, length 23 18:21:42.411459 IP lxandr.teteny.bme.hu.51045 > 224.0.0.252.5355: UDP, length 25 18:21:42.512624 IP lxandr.teteny.bme.hu.51045 > 224.0.0.252.5355: UDP, length 25 18:21:45.171807 IP lxandr.teteny.bme.hu.55288 > 224.0.0.252.5355: UDP, length 25 18:21:59.632491 IP 192.168.77.2 > ALL-SYSTEMS.MCAST.NET: igmp query v2 18:22:01.336805 IP tudylaptop.teteny.elte.hu > 224.0.0.251: igmp v2 report 224.0.0.251 18:22:06.356016 IP 192.168.77.2 > ALL-SYSTEMS.MCAST.NET: igmp query v2 18:22:06.364706 IP 192.168.77.2 > ALL-SYSTEMS.MCAST.NET: igmp query v2 18:22:08.851672 IP scylla.teteny.bme.hu.mdns > 224.0.0.251.mdns: 0 PTR (QM)? 21.64.168.192.in-addr.arpa. (44) 18:22:08.873333 IP marhapalinka.teteny.elte.hu > 224.0.0.252: igmp v2 report 224.0.0.252 18:22:10.010465 IP fecsketurmix.teteny.elte.hu > 224.0.0.251: igmp v2 report 224.0.0.251 18:22:10.649814 IP ani.teteny.elte.hu.55741 > 224.0.0.252.5355: UDP, length 21 18:22:10.750069 IP ani.teteny.elte.hu.55741 > 224.0.0.252.5355: UDP, length 21 18:25:07.368543 IP 192.168.77.2 > 224.0.0.252: igmp query v2 [max resp time 10] [gaddr 224.0.0.252] > [I]f there is anything unusual about the format of the IGMPv2 queries from > your university's vendor equipment, that would be good to know too. Heh. How does that relate to the kernel code assigning a v3 handler to a v2 packet? (Looks something like that to me.) What if I say yes, and what if I say no? :) Anyways, I'll try to contact the admin about that.