From owner-freebsd-current@FreeBSD.ORG Wed Apr 13 09:44:14 2005 Return-Path: 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 47BCD16A4CE for ; Wed, 13 Apr 2005 09:44:14 +0000 (GMT) Received: from postfix3-1.free.fr (postfix3-1.free.fr [213.228.0.44]) by mx1.FreeBSD.org (Postfix) with ESMTP id AFB6A43D1F for ; Wed, 13 Apr 2005 09:44:13 +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 postfix3-1.free.fr (Postfix) with ESMTP id B1ED91734F5; Wed, 13 Apr 2005 11:44:12 +0200 (CEST) Received: by tatooine.tataz.chchile.org (Postfix, from userid 1000) id 19030405A; Wed, 13 Apr 2005 11:43:38 +0200 (CEST) Date: Wed, 13 Apr 2005 11:43:38 +0200 From: Jeremie Le Hen To: Eirik =?iso-8859-1?Q?=D8verby?= Message-ID: <20050413094338.GE63229@obiwan.tataz.chchile.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.8i cc: "current@freebsd.org" Subject: Re: Panic after "in_cksum_skip: out of data by 260" X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Wed, 13 Apr 2005 09:44:14 -0000 Hi Eirik, > Today I received this message on my serial console: > > in_cksum_skip: out of data by 260 > Fatal trap 12: page fault while in kernel mode > cpuid = 1; apic id = 00 > fault virtual address = 0xc > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc066ec33 > stack pointer = 0x10:0xd5437974 > frame pointer = 0x10:0xd5437998 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 36 (swi1: net) > trap number = 12 > panic: page fault > cpuid = 1 > boot() called on cpu#0 > Uptime: 1d15h8m10s > > This server has been very stable for a very long time. This crash surprises > me somewhat. > Uname output: > FreeBSD carnen.net 5.3-STABLE FreeBSD 5.3-STABLE #0: Wed Feb 2 21:02:44 CET > 2005 root@carnen.net:/usr/obj/usr/src/sys/CARNEN i386 > > Any idea what could have caused this? I have no idea about what could have caused this, but in this case, it would be useful to have a crashdump and its associated kernel.debug file, or at least a backtrace (but you must have enabled the break to debugger on panic). I guess you could also use addr2line(1) to determine which function caused the panic from the instruction pointer, but it's likely not enough to help understanding the problem. In order to get a crashdump, your swap space must at least be as large as your RAM and you will have to set the following variables : dumpdev="AUTO" dumpdir="/usr/space/crash" Note that if dumpdir is not set, it defaults to /var/crash. Best regards, -- Jeremie Le Hen < jeremie at le-hen dot org >< ttz at chchile dot org >