Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758298Ab3CFPAX (ORCPT ); Wed, 6 Mar 2013 10:00:23 -0500 Received: from www262.sakura.ne.jp ([202.181.97.72]:63443 "EHLO www262.sakura.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755607Ab3CFPAV (ORCPT ); Wed, 6 Mar 2013 10:00:21 -0500 X-Nat-Received: from [202.181.97.72]:52913 [ident-empty] by smtp-proxy.isp with TPROXY id 1362581889.25863 To: bp@alien8.de, dave@linux.vnet.ibm.com Cc: hpa@linux.intel.com, linux-kernel@vger.kernel.org Subject: Re: [3.9-rc1 x86] Bug in ioremap code? From: Tetsuo Handa References: <201303060041.AIF15342.tJFOHLQFFOMVSO@I-love.SAKURA.ne.jp> <20130305180650.GD4914@pd.tnic> <201303060628.CBG00578.OJtMFFHLQVSFOO@I-love.SAKURA.ne.jp> <51367104.5050200@linux.vnet.ibm.com> <20130305224432.GD27022@pd.tnic> In-Reply-To: <20130305224432.GD27022@pd.tnic> Message-Id: <201303062358.EFG90616.HLtSQFJFOMVOFO@I-love.SAKURA.ne.jp> X-Mailer: Winbiff [Version 2.51 PL2] X-Accept-Language: ja,en,zh Date: Wed, 6 Mar 2013 23:58:08 +0900 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Anti-Virus: Kaspersky Anti-Virus for Linux Mail Server 5.6.45.2/RELEASE, bases: 06032013 #9672708, status: clean Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1053 Lines: 23 Borislav Petkov wrote: > Ok, before we continue guessing stuff, Tetsuo, can you please explain > how exactly you're triggering this. More specifically, we need .config, > hypervisor version, I'm assuming kernel is 3.9-rc1, Linux is guest/host > etc, etc. I'm using CentOS 6.3 x86_32 guest running on VMware Workstation 6.5.5 for Windows XP x86_32 host and VMware Player 4.0.5 for Windows 7 x86_64 host. Kernel version is 3.9-rc1 x86_32. This bug can be triggered only when the guest has little RAM such that /proc/meminfo reports that HighTotal == 0. Config is at http://I-love.SAKURA.ne.jp/tmp/config-3.9-rc1-acpi . I don't know why but changing kernel config to CONFIG_ACPI=n ( http://I-love.SAKURA.ne.jp/tmp/config-3.9-rc1-noacpi ) solves this bug. Well, should I run bisection on ACPI code? Regards. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/