From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: Re: [2.6.28] Kernel panic after closing lid on HP 2510p Date: Thu, 15 Jan 2009 02:03:11 +0000 Message-ID: <20090115020311.GA18740@srcf.ucam.org> References: <200901121356.46236.elendil@planet.nl> <20090113123056.GA2464@deprecation.cyrius.com> <20090114162603.c632d82e.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cavan.codon.org.uk ([93.93.128.6]:52735 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752316AbZAOCDV (ORCPT ); Wed, 14 Jan 2009 21:03:21 -0500 Content-Disposition: inline In-Reply-To: <20090114162603.c632d82e.akpm@linux-foundation.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Andrew Morton Cc: Martin Michlmayr , elendil@planet.nl, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org On Wed, Jan 14, 2009 at 04:26:03PM -0800, Andrew Morton wrote: > It'd be a very special BIOS bug if it can reach out and make the kernel > oops. Lid actions typically trigger SMI code, so it's entirely capable of destroying CPU state in such a way that the kernel falls over (and probably even in ways that cause the kernel to turn green, emit pleasing warbling noises or invade neighbouring pieces of hardware). In this case it seems to be SMP specific - the system's entirely stable in UP mode. It's greatly vexing. -- Matthew Garrett | mjg59@srcf.ucam.org