From owner-freebsd-hackers@FreeBSD.ORG Wed Oct 16 21:43:34 2013 Return-Path: Delivered-To: hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 4F5F2769; Wed, 16 Oct 2013 21:43:34 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-pd0-x22a.google.com (mail-pd0-x22a.google.com [IPv6:2607:f8b0:400e:c02::22a]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 2370F2CE3; Wed, 16 Oct 2013 21:43:34 +0000 (UTC) Received: by mail-pd0-f170.google.com with SMTP id x10so1590010pdj.15 for ; Wed, 16 Oct 2013 14:43:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=OypKWDuWhM0L/1ZGbhnGVMKtnYZt/c861rTX9VoQ9d0=; b=NMzLhn/0w2xubh0j4RBNrmmvVt+9xQig/Ag06Y4bRyDjML774rprSFb8088h/kBAMb OwLbs3vNgACMW93YAavMjlHp4B132oPRZ1OyJcsGbSesecZE95Nz5Mjr/gxySqMJM/k/ nj+aZL5LAirgRBWT0lJ/ubhhq7jyxNHb8nHRGJcMCSLe+ILqj5jvW5+xU7fcd7/lSEz1 O2s6qVJHgcoxYIFzs/2mogc/HnP5R7hJVWP5ug3lzPuq9NkxCPTRs4bmWh9gxE3S3Tsf QddI3VTmOS/qMMFEXiOSIwYvkk4QvaDt4Nr4wj9U5ajVcXiZK5CUJEbkZvs9DKsuO/iU RExg== MIME-Version: 1.0 X-Received: by 10.68.134.65 with SMTP id pi1mr4995110pbb.59.1381959813679; Wed, 16 Oct 2013 14:43:33 -0700 (PDT) Received: by 10.70.92.79 with HTTP; Wed, 16 Oct 2013 14:43:33 -0700 (PDT) In-Reply-To: <201310161650.52354.jhb@freebsd.org> References: <20130719.174511.786.3@DOMY-PC> <201310071212.05281.jhb@freebsd.org> <20131016.104912.479.1@DOMY-PC> <201310161650.52354.jhb@freebsd.org> Date: Wed, 16 Oct 2013 16:43:33 -0500 Message-ID: Subject: Re: UFS related panic (daily <-> find) From: Adam Vande More To: John Baldwin Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: rank1seeker@gmail.com, hackers@freebsd.org X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Oct 2013 21:43:34 -0000 On Wed, Oct 16, 2013 at 3:50 PM, John Baldwin wrote: > Same drill as before, see what instruction this is. Actually, this looks > to > be in the same location as your last panic, so a NULL pointer is 0x1 > instead > of 0x0 again. In my experience, this would still indicate failing RAM to > me, > memtest86+ notwithstanding (memtest86+ is single threaded AFAIK, so it may > not stress the hardware quite the same, e.g. if the error is heat related, > etc.). memtest* cannot conclusively diagnose a dimm as good. Usually the only practical solution is to swap modules with known good ones. -- Adam Vande More