Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261411AbVD3UoY (ORCPT ); Sat, 30 Apr 2005 16:44:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261422AbVD3UnZ (ORCPT ); Sat, 30 Apr 2005 16:43:25 -0400 Received: from outpost.ds9a.nl ([213.244.168.210]:14246 "EHLO outpost.ds9a.nl") by vger.kernel.org with ESMTP id S261414AbVD3UhZ (ORCPT ); Sat, 30 Apr 2005 16:37:25 -0400 Date: Sat, 30 Apr 2005 22:37:23 +0200 From: bert hubert To: Andy Lutomirski Cc: linux-kernel@vger.kernel.org Subject: Re: [x86_64] how worried should I be about MCEs? Message-ID: <20050430203723.GA8122@outpost.ds9a.nl> Mail-Followup-To: bert hubert , Andy Lutomirski , linux-kernel@vger.kernel.org References: <4273E7B1.6020500@myrealbox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4273E7B1.6020500@myrealbox.com> User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1550 Lines: 45 On Sat, Apr 30, 2005 at 01:16:49PM -0700, Andy Lutomirski wrote: > Every now and then, after rebooting, the kernel notices some MCEs. > Should I be worried about this? If these reports are true, they would be worrying. But I find them a bit hard to believe - the bit combinations don't appear to make sense. I have an AMD64 machine which logs 'MCE reported' every once in a while but otherwise functions perfectly and I haven't yet coaxed it into telling me the content of the errors. Might there be a bug here? How did you create this log? > STATUS f66440000000438d MCGSTATUS 0 > MCE 1 > CPU 0 1 instruction cache from boot or resume > ADDR 75e2bb87ec57f8e0 > Instruction cache ECC error > bit32 = err cpu0 > bit33 = err cpu1 > bit35 = res3 > bit43 = res11 > bit45 = uncorrected ecc error > bit46 = corrected ecc error > bit55 = res23 > bit56 = res24 > bit57 = processor context corrupt > bit59 = misc error valid > bit61 = error uncorrected > bit62 = error overflow (multiple errors) This would be one hell of an error - both corrected and uncorrected. Regards, bert -- http://www.PowerDNS.com Open source, database driven DNS Software http://netherlabs.nl Open and Closed source services - 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/