From owner-freebsd-bugs@FreeBSD.ORG Thu Jul 21 23:50:33 2005 Return-Path: X-Original-To: freebsd-bugs@hub.freebsd.org Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CC81416A421 for ; Thu, 21 Jul 2005 23:50:33 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7F74443D9B for ; Thu, 21 Jul 2005 23:50:24 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.3/8.13.3) with ESMTP id j6LNoODq011993 for ; Thu, 21 Jul 2005 23:50:24 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.3/8.13.1/Submit) id j6LNoO44011992; Thu, 21 Jul 2005 23:50:24 GMT (envelope-from gnats) Resent-Date: Thu, 21 Jul 2005 23:50:24 GMT Resent-Message-Id: <200507212350.j6LNoO44011992@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Ryota Hirose Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AE42916A431 for ; Thu, 21 Jul 2005 23:41:01 +0000 (GMT) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [216.136.204.117]) by mx1.FreeBSD.org (Postfix) with ESMTP id E817F43D8F for ; Thu, 21 Jul 2005 23:40:49 +0000 (GMT) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.13.1/8.13.1) with ESMTP id j6LNen1H099140 for ; Thu, 21 Jul 2005 23:40:49 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.13.1/8.13.1/Submit) id j6LNemOd099139; Thu, 21 Jul 2005 23:40:48 GMT (envelope-from nobody) Message-Id: <200507212340.j6LNemOd099139@www.freebsd.org> Date: Thu, 21 Jul 2005 23:40:48 GMT From: Ryota Hirose To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-2.3 Cc: Subject: kern/83885: Kernel panic when received ICMP TOO_BIG by ping6 -m X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Jul 2005 23:50:33 -0000 >Number: 83885 >Category: kern >Synopsis: Kernel panic when received ICMP TOO_BIG by ping6 -m >Confidential: no >Severity: critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Jul 21 23:50:24 GMT 2005 >Closed-Date: >Last-Modified: >Originator: Ryota Hirose >Release: 5.4-RC4 >Organization: Yamaha Corporation >Environment: FreeBSD thebe.comm.yamaha.co.jp 5.4-RC4 FreeBSD 5.4-RC4 #13: Fri Jul 22 08:19:44 JST 2005 hirose@thebe.comm.yamaha.co.jp:/usr/src/sys/i386/compile/THEBE i386 >Description: Kernel will panic when execute ping6 -m and receive ICMP TOO_BIG error for that ICMP Echo. >How-To-Repeat: PC1---------------ROUTER--------------PC2 MTU=1500 MTU=1280 PC1# ping6 -m -s 1300 PC2 >Fix: --- uipc_socket.c.orig Fri Jul 22 08:26:08 2005 +++ uipc_socket.c Fri Jul 22 08:03:39 2005 @@ -1174,7 +1174,10 @@ } cm = cmn; } - nextrecord = so->so_rcv.sb_mb->m_nextpkt; + if (so->so_rcv.sb_mb) + nextrecord = so->so_rcv.sb_mb->m_nextpkt; + else + nextrecord = NULL; orig_resid = 0; } if (m != NULL) { >Release-Note: >Audit-Trail: >Unformatted: