From owner-freebsd-current@FreeBSD.ORG Wed Oct 21 16:21:31 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CAAB71065670 for ; Wed, 21 Oct 2009 16:21:31 +0000 (UTC) (envelope-from scottl@samsco.org) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.freebsd.org (Postfix) with ESMTP id 825068FC13 for ; Wed, 21 Oct 2009 16:21:31 +0000 (UTC) Received: from [IPv6:::1] (pooker.samsco.org [168.103.85.57]) (authenticated bits=0) by pooker.samsco.org (8.14.2/8.14.2) with ESMTP id n9LGLT72053178; Wed, 21 Oct 2009 10:21:29 -0600 (MDT) (envelope-from scottl@samsco.org) Mime-Version: 1.0 (Apple Message framework v1075.2) Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes From: Scott Long In-Reply-To: <4ADE4D19.3090907@mwatters.net> Date: Wed, 21 Oct 2009 10:21:29 -0600 Content-Transfer-Encoding: 7bit Message-Id: <441DF1EC-F378-4F25-BEA3-FCEB529659D2@samsco.org> References: <4ADE4D19.3090907@mwatters.net> To: Mike Watters X-Mailer: Apple Mail (2.1075.2) X-Spam-Status: No, score=-2.3 required=3.8 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.1.8 X-Spam-Checker-Version: SpamAssassin 3.1.8 (2007-02-13) on pooker.samsco.org Cc: freebsd-current@freebsd.org Subject: Re: 8.0-RC1 amd64 - filesystem on scsi disk related memory corruption w/ gte 4GB ram X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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, 21 Oct 2009 16:21:31 -0000 On Oct 20, 2009, at 5:51 PM, Mike Watters wrote: > Running 8.0-RC1 on an amd64 workstation, I have run into what > appears to > be a memory corruption issue when doing (UFS2) filesystem I/O on an > attached SCSI disk when more than 4GB of RAM is installed, or when 4GB > is installed and "memory hole remapping" is enabled in the BIOS. > > The SCSI card is an LSI20160 (sym(4), PCI U160). The SCSI disk is a > Seagate ST373455LW (U320). The current motherboard is an ASUS M3A76- > CM > (AMI BIOS, AM2+ socket). I have a boot -v dmesg (34kb) available > from a > livefs cd boot with 8GB installed and memory hole remapping turned on > (case 4 result). The source used to build the CD was cvsup'ed a > week or > two ago. The sym driver has been having issues on-and-off for years with 64bit memory configurations. If at all possible, I'd recommend replacing your hardware; fixing the driver has proven to be hard given the limited resources available and the age of the hardware. Scott