Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 27 Feb 2003 12:26:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 27 Feb 2003 12:26:50 -0500 Received: from serenity.mcc.ac.uk ([130.88.200.93]:51473 "EHLO serenity.mcc.ac.uk") by vger.kernel.org with ESMTP id ; Thu, 27 Feb 2003 12:26:50 -0500 Date: Thu, 27 Feb 2003 17:37:04 +0000 From: John Levon To: Dave Hansen Cc: oprofile-list@lists.sourceforge.net, Linux Kernel Mailing List Subject: Re: Oops running oprofile in 2.5.62 Message-ID: <20030227173704.GA76419@compsoc.man.ac.uk> References: <3E5DB057.60503@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3E5DB057.60503@us.ibm.com> User-Agent: Mutt/1.3.25i X-Url: http://www.movementarian.org/ X-Record: Mr. Scruff - Trouser Jazz X-Scanner: exiscan for exim4 (http://duncanthrax.net/exiscan/) *18oRxx-0004DC-00*UsALvuAFBKA* Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 864 Lines: 23 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) 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...) UP oprofile in current linus is still totally broken, but I can't imagine it causing the above. regards john - 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/