Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757219AbdLXD3w (ORCPT ); Sat, 23 Dec 2017 22:29:52 -0500 Received: from mail.cn.fujitsu.com ([183.91.158.132]:22460 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757045AbdLXD3u (ORCPT ); Sat, 23 Dec 2017 22:29:50 -0500 X-IronPort-AV: E=Sophos;i="5.43,368,1503331200"; d="scan'208";a="32565015" Subject: Re: PROBLEM: 4.15.0-rc3 APIC causes lockups on Core 2 Duo laptop To: Thomas Gleixner , Dexuan Cui CC: Alexandru Chirvasitu , Pavel Machek , kernel list , Ingo Molnar , "Maciej W. Rozycki" , Mikael Pettersson , Josh Poulson , "Mihai Costache (Cloudbase Solutions SRL)" , Stephen Hemminger , Marc Zyngier , "linux-pci@vger.kernel.org" , Haiyang Zhang , Simon Xiao , Saeed Mahameed , Jork Loeser , Bjorn Helgaas , "devel@linuxdriverproject.org" , KY Srinivasan References: <20171218101131.GA5338@amd> <20171219083421.GB24638@arch-chirva.localdomain> <20171220131929.GC24638@arch-chirva.localdomain> <20171220194506.GD24638@arch-chirva.localdomain> <20171221022356.GE24638@arch-chirva.localdomain> <1bd74ca3-afca-9d61-6911-61250f459891@cn.fujitsu.com> <20171222142053.3cbhi2nhh24w7yoo@D-69-91-141-110.dhcp4.washington.edu> <20171222222917.GA1138@arch-chirva.localdomain> From: Dou Liyang Message-ID: <5de54d9c-236a-eed8-f0c3-618269442c07@cn.fujitsu.com> Date: Sun, 24 Dec 2017 11:29:45 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="gbk"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.167.226.106] X-yoursite-MailScanner-ID: BD262486A78F.AD547 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: douly.fnst@cn.fujitsu.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 348 Lines: 20 Hi Thomas, At 12/23/2017 09:32 PM, Thomas Gleixner wrote: [...] >> >> The BUG_ON panic happens at line 147: >> BUG_ON(!test_and_clear_bit(bit, cm->alloc_map)); >> >> I'm sure Thomas and Dou know it better than me. > > I'll have a look after the holidays. > Merry Christmas! :-) I am trying to look into it. Thanks, dou