From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261498AbVBACUQ (ORCPT ); Mon, 31 Jan 2005 21:20:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261503AbVBACUQ (ORCPT ); Mon, 31 Jan 2005 21:20:16 -0500 Received: from sccimhc91.asp.att.net ([63.240.76.165]:62109 "EHLO sccimhc91.asp.att.net") by vger.kernel.org with ESMTP id S261498AbVBACUL (ORCPT ); Mon, 31 Jan 2005 21:20:11 -0500 From: Jay Roplekar To: linux-kernel@vger.kernel.org Subject: Re: Kernel bug: mm/rmap.c:483 and related {now 2.6.8} Date: Mon, 31 Jan 2005 20:19:54 -0600 User-Agent: KMail/1.7 MIME-Version: 1.0 Content-Disposition: inline Message-Id: <200501312019.54250.jay_roplekar@hotmail.com> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >Thanks for giving that a thorough run, memory seems exonerated... yet I >don't trust this machine at all: have you tried manufacturer diagnostics? Ouch, that hurts. This is a machine I built myself over three years ago. Ran very stably with 2.4.*. may be it is the age of the machine. The recent hardware changes are additions of a dvd writer, a hdd and a pci wireless card. Which seem to work ok until recently. What other diagnostics would make sense? >> Jan 29 08:25:02 Bad page state at prep_new_page ('X', page c1251ae0) >> Jan 29 08:25:02 flags:0x20000004 mapping:00006a00 mapcount:0 count:0 >Again, something I've not seen reported before: mapping:00006a00, when >mapping should be NULL (or at least a pointer into kernel memory). You >say message reappeared twice with identical addresses: was that mapping >the same each time? Hmm, it is different one time, as shown below.. I guess should have looked carefully. Although it means nothing to me.. FWIW, please note that in all these cases ndiswrapper (windows driver loader) is being used. Thanks, Jay Jan 29 08:27:03 localhost kernel: Bad page state at prep_new_page (in process 'X', page c1253a60) Jan 29 08:27:03 localhost kernel: flags:0x20000004 mapping:00006a00 mapcount:0 count:0 Jan 29 08:27:08 localhost kernel: Bad page state at prep_new_page (in process 'X', page c12965e0) Jan 29 08:27:08 localhost kernel: flags:0x20000004 mapping:00006600 mapcount:0 count:0