From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1cWdXj-0005Vv-5L for kexec@lists.infradead.org; Thu, 26 Jan 2017 06:28:24 +0000 Subject: Re: [PATCH] x86/mce: Keep quiet in case of broadcasted mce after system panic References: <1485158511-22374-1-git-send-email-xlpang@redhat.com> <20170123125157.u2kefedwpvgcdyfo@pd.tnic> <588606B9.3070604@redhat.com> <20170123145056.fyraeehjfnwmmfb6@pd.tnic> <5886AD91.10803@redhat.com> <20170124122212.3dpdex5wjallypis@pd.tnic> From: Xunlei Pang Message-ID: <5889976A.9020802@redhat.com> Date: Thu, 26 Jan 2017 14:30:02 +0800 MIME-Version: 1.0 In-Reply-To: <20170124122212.3dpdex5wjallypis@pd.tnic> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: xlpang@redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Borislav Petkov , xlpang@redhat.com Cc: Prarit Bhargava , Kiyoshi Ueda , Tony Luck , x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Ingo Molnar , Junichi Nomura , Naoya Horiguchi , Dave Young On 01/24/2017 at 08:22 PM, Borislav Petkov wrote: > On Tue, Jan 24, 2017 at 09:27:45AM +0800, Xunlei Pang wrote: >> It occurred on real hardware when testing crash dump. >> >> 1) SysRq-c was injected for the test in 1st kernel >> [ 49.897279] SysRq : Trigger a crash 2) The 2nd kernel started for kdump >> [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.x86_64 root=UUID=976a15c8-8cbe-44ad-bb91-23f9b18e8789 > Yeah, no, I'm not debugging the RH Frankenstein kernel. > > Please retrigger this with latest tip/master first. > The hardware machine check is hard to reproduce, but the mce code of RHEL7 is quite the same as that of tip/master, anyway we are able to inject software mce to reproduce it. It is also clear from the theoretical analysis of the code. Regards, Xunlei _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752641AbdAZG2D (ORCPT ); Thu, 26 Jan 2017 01:28:03 -0500 Received: from mx1.redhat.com ([209.132.183.28]:56346 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751605AbdAZG2C (ORCPT ); Thu, 26 Jan 2017 01:28:02 -0500 Reply-To: xlpang@redhat.com Subject: Re: [PATCH] x86/mce: Keep quiet in case of broadcasted mce after system panic References: <1485158511-22374-1-git-send-email-xlpang@redhat.com> <20170123125157.u2kefedwpvgcdyfo@pd.tnic> <588606B9.3070604@redhat.com> <20170123145056.fyraeehjfnwmmfb6@pd.tnic> <5886AD91.10803@redhat.com> <20170124122212.3dpdex5wjallypis@pd.tnic> To: Borislav Petkov , xlpang@redhat.com Cc: x86@kernel.org, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, Tony Luck , Ingo Molnar , Dave Young , Prarit Bhargava , Junichi Nomura , Kiyoshi Ueda , Naoya Horiguchi From: Xunlei Pang Message-ID: <5889976A.9020802@redhat.com> Date: Thu, 26 Jan 2017 14:30:02 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <20170124122212.3dpdex5wjallypis@pd.tnic> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Thu, 26 Jan 2017 06:28:02 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/24/2017 at 08:22 PM, Borislav Petkov wrote: > On Tue, Jan 24, 2017 at 09:27:45AM +0800, Xunlei Pang wrote: >> It occurred on real hardware when testing crash dump. >> >> 1) SysRq-c was injected for the test in 1st kernel >> [ 49.897279] SysRq : Trigger a crash 2) The 2nd kernel started for kdump >> [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.x86_64 root=UUID=976a15c8-8cbe-44ad-bb91-23f9b18e8789 > Yeah, no, I'm not debugging the RH Frankenstein kernel. > > Please retrigger this with latest tip/master first. > The hardware machine check is hard to reproduce, but the mce code of RHEL7 is quite the same as that of tip/master, anyway we are able to inject software mce to reproduce it. It is also clear from the theoretical analysis of the code. Regards, Xunlei