From owner-freebsd-questions@FreeBSD.ORG Sun Apr 12 01:51:27 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2C12A106566B for ; Sun, 12 Apr 2009 01:51:27 +0000 (UTC) (envelope-from paulh@bdug.org.au) Received: from mail.bdug.org.au (mail.bdug.org.au [202.72.170.31]) by mx1.freebsd.org (Postfix) with ESMTP id 3C9A08FC25 for ; Sun, 12 Apr 2009 01:51:26 +0000 (UTC) (envelope-from paulh@bdug.org.au) Received: from NBD41VJ (unknown [192.168.0.105]) by mail.bdug.org.au (Postfix) with ESMTP id A97D7B862; Sun, 12 Apr 2009 09:34:29 +0800 (WST) From: "Paul Hamilton" To: "'Ray'" , "'freebsd general questions'" References: <200904031144.31198.ray@stilltech.net> Date: Sun, 12 Apr 2009 09:34:29 +0800 Message-ID: <02c401c9bb0e$d2b3e130$6900a8c0@NBD41VJ> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <200904031144.31198.ray@stilltech.net> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 thread-index: Acm0hhLA8fqeU0/HSy+LzgzdWqLRAwGh8WcA X-bdug-MailScanner-Watermark-pkv: 1240104871.28132@rH4qs8pDSmf/fSq4q5eQ1w X-bdug-MailScanner-Information: Please contact the ISP for more information X-MailScanner-ID: A97D7B862.3DDE8 X-bdug-MailScanner: Found to be clean X-bdug-MailScanner-From: paulh@bdug.org.au X-Spam-Status: No Cc: Subject: RE: questions about Fatal Trap 12 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Apr 2009 01:51:27 -0000 -----Original Message----- From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd-questions@freebsd.org] On Behalf Of Ray Sent: Saturday, 4 April 2009 01:45 To: freebsd general questions Subject: questions about Fatal Trap 12 Hello, I have received a kernel Trap 12 error several times now and am trying to figure it out. the error occurred today, and the previous time was about two weeks ago. last time I had to run fsck manually if that proves anything. uname -a gives the following: FreeBSD wserver.********.com 7.0-RELEASE-p3 FreeBSD 7.0-RELEASE-p3 #0: Wed Sep 17 13:30:46 MDT 2008 root@wserver.*********.com:/usr/obj/usr/src/sys/MOD amd64 Google returns results mostly for versions 4.x and 5.x, but it suggest 2 main things: test ram, and kernel panic troubleshooting. (http://www.freebsd.org/doc/en/books/faq/advanced.html#KERNEL-PANIC- TROUBLESHOOTING) Is there a way to test the ram without removing it from the machine and leave the machine functioning. I've used memtest 86 before, but obviously the machine has to be offline for this test. However, I'm a little unsure of the instructions in the handbook on troubleshooting. namely, it talks about using the nm command, put I can't figure out the data file to give it as an argument, and second I'm unsure about using a debugging Kernel on a production server. I have heard that It will significantly slow down a machine. Any help or suggestions would be greatly appreciated. Ray _______________________________________________ Hi Ray, I have had a few of the Trap 12 errors over the last 10 years of using FreeBSD. From memory, mine where due to faulty motherboard/CPU. I just moved the hard drive to another PC, and all was ok. The last time I received the error, was when I tried recompiling world. I put it down to CPU heat, as it was running a LOT harder than normal day to day use. This was on a server that had been in place for two years running with out problem! Cheers, PaulH