From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764154AbZAOTCG (ORCPT ); Thu, 15 Jan 2009 14:02:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755652AbZAOTBx (ORCPT ); Thu, 15 Jan 2009 14:01:53 -0500 Received: from accolon.hansenpartnership.com ([76.243.235.52]:56640 "EHLO accolon.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754249AbZAOTBv (ORCPT ); Thu, 15 Jan 2009 14:01:51 -0500 Subject: Re: ACPI hotplug panic with current git head From: James Bottomley To: Len Brown Cc: linux-acpi@vger.kernel.org, linux-kernel , linux-pci@vger.kernel.org, "Barnes, Jesse" , Kenji Kaneshige In-Reply-To: <1231807693.27151.21.camel@localhost.localdomain> References: <1231604250.3642.33.camel@localhost.localdomain> <1231807693.27151.21.camel@localhost.localdomain> Content-Type: text/plain Date: Thu, 15 Jan 2009 14:01:48 -0500 Message-Id: <1232046108.5966.57.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 (2.22.3.1-1.fc9) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2009-01-12 at 18:48 -0600, James Bottomley wrote: > On Mon, 2009-01-12 at 16:16 -0500, Len Brown wrote: > > > This is on an IBM Maia system with the calgary IOMMU enabled. It's a > > > fatal boot up panic. > > > > > > > James, > > A guided bisect... > > Please let me know which of these fail > > > > a3a798c88a14b35e5d4ca30716dbc9eb9a1ddfe2 is 2.6.29 at ACPI merge > > efcb3cf7f00c3c424db012380a8a974c2676a3c8 is 2.6.29 before ACPI merge > > Didn't try these (being after the failure) > > > ec9f168fcc344d2ffec1c8c822076bf22dab5c33 is 2.6.28 with most ACPI > > This is the failing one. > > > e8443c358c34f3fe65236e24147ddf0cd0e61b08 is 2.6.28 plus just ACPICA > > This one boots fine. > > > Please test the "2.6.28+ACPICA" one first. > > If it fails, we are close so you can skip the others above > > and bisect between that and 2.6.28. > > I'll try bisecting between ec9f168fcc344d2ffec1c8c822076bf22dab5c33 and > e8443c358c34f3fe65236e24147ddf0cd0e61b08. OK, bisection complete. It's not actually coming from the ACPI tree but from the PCI one (appropriate CC's added). The commit causing the boot panic is: commit e8c331e963c58b83db24b7d0e39e8c07f687dbc6 Author: Kenji Kaneshige Date: Wed Dec 17 12:09:12 2008 +0900 PCI hotplug: introduce functions for ACPI slot detection I'm still not sure why, though James