Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 27 Feb 2003 12:48:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 27 Feb 2003 12:48:52 -0500 Received: from e33.co.us.ibm.com ([32.97.110.131]:61945 "EHLO e33.co.us.ibm.com") by vger.kernel.org with ESMTP id ; Thu, 27 Feb 2003 12:48:50 -0500 Message-ID: <3E5E50C4.1070906@us.ibm.com> Date: Thu, 27 Feb 2003 09:54:12 -0800 From: Dave Hansen User-Agent: Mozilla/5.0 (compatible; MSIE5.5; Windows 98; X-Accept-Language: en MIME-Version: 1.0 To: John Levon CC: oprofile-list@lists.sourceforge.net, Linux Kernel Mailing List Subject: Re: Oops running oprofile in 2.5.62 References: <3E5DB057.60503@us.ibm.com> <20030227173704.GA76419@compsoc.man.ac.uk> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1052 Lines: 29 John Levon wrote: > On Wed, Feb 26, 2003 at 10:29:43PM -0800, Dave Hansen wrote: > >>I'm pretty sure it happened on this line in oprofile_add_sample(): >> cpu_buf->buffer[cpu_buf->pos].eip = eip; >> >>Unable to handle kernel paging request at virtual address f8c3c000 > > Odd. UP or SMP ? Were you shutting down oprofile at the time (or did the > daemon crash ? check /var/lib/oprofile/oprofiled.log) 16-way NUMAQ :) It was in the middle of a dbench run, so nothing critical was happening with oprofile. > The only thing I can think is that the buffer got freed then we got an > NMI afterwards (which obviously isn't supposed to happen...) The irqbalance code is causing some funniness on these machines, so it might be related. I'll speak up if I see it again. -- Dave Hansen haveblue@us.ibm.com - 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/