From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Renninger Subject: [PATCH 0/3] [2.6.25-rc5] Handle a common BIOS bug on recent ASUS BIOS updates gracefully Date: Wed, 12 Mar 2008 01:06:02 +0100 Message-ID: <1205280362.8194.42.camel@linux-2bdv.site> Reply-To: trenn@suse.de Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from ns2.suse.de ([195.135.220.15]:44781 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751327AbYCLAFt (ORCPT ); Tue, 11 Mar 2008 20:05:49 -0400 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Len Brown Cc: linux-acpi , "Zhang, Rui" Hi Len, the first patch fixes a memory corruption in ACPICA. Memory corruption should legitimate this as 2.6.25-rc5 material (also because this looks rather safe to do and seem to pop up on a lot recent BIOS updates). The second patch catches the NULL pointer which is passed on evaluate_reference now, instead of a corrupted pointer. The third patch tells the user that his BIOS has an invalid reference as a passive cooling device (the invalid reference is the NULL handle now). I have checked this working (ran into the corrupted memory and NULL pointer) by invalidating a passive trip point and simulate the broken ASUS BIOSes by overriding a DSDT on another system. The first report which verifies the patches working with a 2.6.24 kernel patched on a real broken ASUS Bios can be found here: https://bugzilla.novell.com/show_bug.cgi?id=350017 Comment #40: "Works on the Asus M2N-E and M2A VM HDMI." Thanks, Thomas