Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757511AbZCPQbu (ORCPT ); Mon, 16 Mar 2009 12:31:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752361AbZCPQbk (ORCPT ); Mon, 16 Mar 2009 12:31:40 -0400 Received: from mail-bw0-f175.google.com ([209.85.218.175]:54813 "EHLO mail-bw0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752014AbZCPQbj (ORCPT ); Mon, 16 Mar 2009 12:31:39 -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=TNv97w9VcbVG+DWSdeqgn+SsGa2C2UE6YTFcZoP/JCUIhk/4mpSY/y3xXzPkxgRVYA 13ETLVohA86/yDakXApNBO8+zAsQx0jrW5xK2+m0CQnGdInPdr76Z3mvIXGpDjgV4LMP gCl4RSPXgFlSKpP7Bzw6vLxpeTT60YG/ngmYA= Message-ID: <49BE7EE6.3070107@gmail.com> Date: Mon, 16 Mar 2009 17:31:34 +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> In-Reply-To: <1237174943.4193.37.camel@minggr.sh.intel.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: 915 Lines: 22 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. Thanks. -- 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/