From owner-freebsd-stable@FreeBSD.ORG Thu Jul 15 17:13:07 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A42421065688 for ; Thu, 15 Jul 2010 17:13:07 +0000 (UTC) (envelope-from masoom.shaikh@gmail.com) Received: from mail-gy0-f182.google.com (mail-gy0-f182.google.com [209.85.160.182]) by mx1.freebsd.org (Postfix) with ESMTP id 27F0C8FC19 for ; Thu, 15 Jul 2010 17:13:06 +0000 (UTC) Received: by gyd8 with SMTP id 8so919126gyd.13 for ; Thu, 15 Jul 2010 10:13:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:date:message-id :subject:from:to:content-type; bh=YPWt8CrR0C3iPO1HntyZxCH3P1kj02UFtS+X3ZM8uc8=; b=Xpp7mYvWYl71gKJ2/17gRh3o3nlrR/Ay/98Kob9XQMMP3A0MOhlluo39j9ySTlzw70 dpf33UbsDH+VPHrGWDg0bsTtp2yNvSrl2tjrjP+x6x8nvJKRvTSNb4vk6saFqBo/iJ80 Jr5lJQpR2OFjIe9ed5mhOzYNHHnkxv0eAndHU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=tgNmpDACU+319oExjdDhdjiNuean1a9+572zZ47FAmxLAWhJGJ4vCnxrM/moYBuWik /M5ergmNxse5ebAYbgmrze6sJ0IuMgCJEHcHdTdOuD339PwYnsstShg9/I6eHAay3O/A NAHOjyGVD3dLTveGvLIsJdAvLDcOX87+vfSgM= MIME-Version: 1.0 Received: by 10.90.119.19 with SMTP id r19mr69192agc.82.1279213986183; Thu, 15 Jul 2010 10:13:06 -0700 (PDT) Received: by 10.90.65.16 with HTTP; Thu, 15 Jul 2010 10:13:05 -0700 (PDT) Date: Thu, 15 Jul 2010 17:13:05 +0000 Message-ID: From: Masoom Shaikh To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Subject: FreeBSD RELEASE-8.0-p3 panic X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Jul 2010 17:13:07 -0000 Howdy, here is the image of my FreeBSD panic http://images.cjb.net/d64f4.jpg the error says RAM parity error(not visible in pic). but I have following reasons to believed it could be wrong 1. I have 1GB of RAM, with two chips of 512MB each. It panics even if I boot with only 512MB of total RAM. i.e. one chip removed. It panics for both chips individually. 2. I tried replacing my both 512MB chips with two 512MB chips from my friends laptop, it still panics with exact same error. RAM parity error, it is very unlikely that his chips have this problem. He runs Ubuntu on those chips and Windows7 with no issues whatsoever. 3. Windows7 operates on this(my) laptop just fine. sometimes it take 3-4 attempts to boot it, since it panics the moment KDM tries to load. But once running it runs few hours if I do not subject it to load. Even moderate load like browsing some multimedia content websites, e.g. youtube or some site with lots of flash based ads or even some javascript heavy page like GMail etc... It appears the moment I start subjecting the machine to load, mem usage increases and it hits the part of RAM which might possibly have parity error. have a look at the pic, the frame pointer is always remains same 0xffffffff803f1ef1. I have already asked, and again ask, is there a way to ask FreeBSD to "ignore" some part of RAM ? how do I zero in on the exact point of failure ? I am aware, just too many variables are here, some wild guesses ? I am very sorry for my feeble OS debugging skills if any, but FreeBSD has nothing to do with my day job, it is just a hobby for me. I sincerely want it to work. regards, Masoom Shaikh