From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261956AbVANLbY (ORCPT ); Fri, 14 Jan 2005 06:31:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261957AbVANLbY (ORCPT ); Fri, 14 Jan 2005 06:31:24 -0500 Received: from host62-24-231-113.dsl.vispa.com ([62.24.231.113]:56508 "EHLO cenedra.walrond.org") by vger.kernel.org with ESMTP id S261956AbVANLbU (ORCPT ); Fri, 14 Jan 2005 06:31:20 -0500 From: Andrew Walrond To: linux-kernel@vger.kernel.org Subject: Help interpreting Machine Check Exception Date: Fri, 14 Jan 2005 11:31:13 +0000 User-Agent: KMail/1.7.2 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200501141131.13053.andrew@walrond.org> X-Spam-Score: 4.3 (++++) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is a dual opteron numa machine and I am seeing messages like this during boot: CPU 0: Machine Check Exception: 4 Bank 4: b200000000070f0f TSC b961d94950 kernel panic - not syncing: Machine check Which when run through Dave Jones tool says andrew@orac test $ ./a.out -b 4 -s b200000000070f0f -e 4 -a 0 Status: (4) Machine Check in progress. Restart IP invalid. parsebank(4): b200000000070f0f @ 0 External tag parity error CPU state corrupt. Restart not possible Error enabled in control register Error not corrected. Bus and interconnect error Participation: Generic Timeout: Request: Generic error Transaction type : Invalid Memory/IO : Other Any clues on what might be broken? does "Bus and interconnect error" suggest the MB? I have reseating all memory and cpus, and run memtest overnight without error. Andrew Walrond