Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754328AbZCRIJP (ORCPT ); Wed, 18 Mar 2009 04:09:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750835AbZCRII6 (ORCPT ); Wed, 18 Mar 2009 04:08:58 -0400 Received: from mail-fx0-f158.google.com ([209.85.220.158]:57730 "EHLO mail-fx0-f158.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750733AbZCRII4 (ORCPT ); Wed, 18 Mar 2009 04:08:56 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=fo5j8f5vGBSTAbr/QA07dUj9IF2x24G35uGtvZD7pdnyxURJqBXOQIiFYb1S2L39hI BElaePrW67uoCi5EHlS/Pq34fDs9zRuHt0jL9ihodQCseWcMRhRZFtu2iowddDJIASvq JFhDUDqCLETLgwGrvsjBUTbDaMO4LFVCY5pgo= Message-ID: <49C0AC13.7040107@gmail.com> Date: Wed, 18 Mar 2009 09:08:51 +0100 From: Jiri Slaby User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090223 SUSE/3.0b2-3.1 Thunderbird/3.0b2 MIME-Version: 1.0 To: Lin Ming CC: robert.moore@intel.com, lenb@kernel.org, linux-acpi@vger.kernel.org, "Rafael J. Wysocki" , linux-kernel , torvalds@linux-foundation.org Subject: Re: 2.6.29 acpi regression: acpi_ex_extract_from_field -- div by zero References: <49BCDCAA.8040309@gmail.com> <1237174943.4193.37.camel@minggr.sh.intel.com> <49BE7EE6.3070107@gmail.com> In-Reply-To: <49BE7EE6.3070107@gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1211 Lines: 26 On 16.3.2009 17:31, Jiri Slaby wrote: > On 16.3.2009 04:42, Lin Ming wrote: >>> sometimes, when booting up/resuming from disk, I get an oops[1]. >>> >>> obj_desc->common_field.access_bit_width is zero, but even after the >>> loop. Division before the loop is apparently OK. >> >> Would please try below debug patch to see which region filed is >> accessed? > > Yes, except the fact, we wouldn't see anything :) -- I'll add inside the > if a return statement or something to disallow the oops to flood screen. > > Also, it doesn't happen regularly. Mostly several first tries after cold > start. I hope this is a regression and not a HW problem, but it emerged > after switching to 2.6.29-*, I will keep you informed. Hmm, I didn't see it with rc8 and this patch applied so far (no 'ACPI Debug' in dmesg). Also I don't see anything changed within drivers/acpi/ et al. between rc7 and rc8. Maybe the timing changed somewhere else... I'm confused, but keep trying. -- 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/