From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Slaby Subject: Re: 2.6.29 acpi regression: acpi_ex_extract_from_field -- div by zero Date: Thu, 19 Mar 2009 17:06:41 +0100 Message-ID: <49C26D91.3010904@gmail.com> References: <49BCDCAA.8040309@gmail.com> <1237174943.4193.37.camel@minggr.sh.intel.com> <49BE7EE6.3070107@gmail.com> <49C0AC13.7040107@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from ey-out-2122.google.com ([74.125.78.27]:47823 "EHLO ey-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751975AbZCSQGq (ORCPT ); Thu, 19 Mar 2009 12:06:46 -0400 In-Reply-To: <49C0AC13.7040107@gmail.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org 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 On 18.3.2009 09:08, Jiri Slaby wrote: > 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? > > I'm confused, but keep trying. Got it again. obj_desc->common_field.node is martian too (0x4000000), so the added acpi_get_name dies: http://www.fi.muni.cz/~xslaby/sklad/panics/acpi_oops1.png Whole common_field seems to be mangled. Ideas?