From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031176Ab2CVVwz (ORCPT ); Thu, 22 Mar 2012 17:52:55 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:39972 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030475Ab2CVVwx (ORCPT ); Thu, 22 Mar 2012 17:52:53 -0400 X-Sasl-enc: wSE/ccaHBoBEMF7BqJ310ApAVJ3ZFEZDX95N3ma+H1zu 1332453173 Date: Thu, 22 Mar 2012 14:52:23 -0700 From: Greg KH To: Joseph Salisbury Cc: linux-kernel@vger.kernel.org Subject: Re: Regression introduced in v3.2.12 stable Message-ID: <20120322215223.GA18689@kroah.com> References: <4F6B7A37.3020300@canonical.com> <20120322212644.GA30888@kroah.com> <4F6B9D0E.2040308@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4F6B9D0E.2040308@canonical.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Mar 22, 2012 at 05:43:42PM -0400, Joseph Salisbury wrote: > On 03/22/2012 05:26 PM, Greg KH wrote: > > On Thu, Mar 22, 2012 at 03:15:03PM -0400, Joseph Salisbury wrote: > >> I figured I'd send a heads up regarding a possible regression in v3.2.12 > >> stable. The issue prevents systems from booting. > >> > >> There have been a few bugs[0] reported against the Ubuntu kernel, which > >> was recently rebased to 3.2.12. We're in the process of bisecting now > >> and will post an update.. > > > > What specifically happens here when the system does not boot? Any error > > message? Are you sure this isn't the known pci express issue showing up > > here? > > > > Can you run 'git bisect' to trace it down to a specific patch please? > > > > thanks, > > > > greg k-h > > Hi Greg, > > Thanks for the response. > > We did some bisecting/testing and identified the bad commit in 3.2.12 as > the following: > > f043ddb60c84ea64a23b755004572afe922e653c PCI: ignore pre-1.1 ASPM > quirking when ASPM is disabled Yup, that's the known problem one. But, note that it does solve other people's problems at the moment, so you can't just ignore it :) greg k-h