From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756071Ab0HaWj0 (ORCPT ); Tue, 31 Aug 2010 18:39:26 -0400 Received: from mtaout02-winn.ispmail.ntl.com ([81.103.221.48]:32039 "EHLO mtaout02-winn.ispmail.ntl.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754313Ab0HaWjZ convert rfc822-to-8bit (ORCPT ); Tue, 31 Aug 2010 18:39:25 -0400 Date: Tue, 31 Aug 2010 23:39:21 +0100 From: Ken Moffat To: Martin Steigerwald Cc: linux-kernel@vger.kernel.org Subject: Re: help with git bisecting a bug 16376: random - possibly Radeon DRM KMS related - freezes Message-ID: <20100831223921.GA23476@deepthought> References: <201008312153.45792.Martin@lichtvoll.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <201008312153.45792.Martin@lichtvoll.de> User-Agent: Mutt/1.5.12-2006-07-14 Content-Transfer-Encoding: 8BIT X-Cloudmark-Analysis: v=1.1 cv=4QByPj+6Iq2k/6L54d+eVKTdgQxdscpRskJJReCfdXo= c=1 sm=0 a=zzU6Ef89lnMA:10 a=8nJEP1OIZ-IA:10 a=VwQbUJbxAAAA:8 a=CLtdtiFWAAAA:8 a=ajWjtlVnjHRKDx9BPFUA:9 a=e2kRNwlF4xJa5q2fmiPQX5lqFw8A:4 a=wPNLvfGTeEIA:10 a=HpAAvcLHHh0Zw7uRqdWCyQ==:117 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 31, 2010 at 09:53:43PM +0200, Martin Steigerwald wrote: > > Hi! > > I am seeking help with encircling the cause of: > > [Bug 16376] random - possibly Radeon DRM KMS related - freezes > https://bugzilla.kernel.org/show_bug.cgi?id=16376 > > I started a bisection as described in which has been painful for me - at > least for a first time bisection -, but after the second skip of a non- > booting kernel git points me to a kernel that is outside of the initial > range between good and back. > > good is: [60b341b778cc2929df16c0a504c91621b3c6a4ad] Linux 2.6.33 > > bad is: bad: [64ba9926759792cf7b95f823402e2781edd1b5d4] Merge branch 'for- > linus' of git://git.open-osd.org/linux-open-osd > > After skipping the last non booting kernel, git bisect put me to > 5be796f0b842c5852d7397a82f8ebd6be8451872 which is just 300 lines after > 2.6.33-rc2. > > Obviously I am not interested in kernels prior 2.6.33. Should I just do a > "git bisect good" without trying the kernel or is there some other remedy? > its 11 cycles already without testing anything outside the initial > good/bad range and it takes about half a day to be somewhat sure that a > kernel is good, so I'd like to avoid testing versions outside this range. While you are bisecting, don't believe the version in Makefile. I got similarly freaked out a couple of years ago - if I understood correctly, it's something to do with when a change was created. The key point is that during bisection the apparent version *can* go back to a version that appears to be before the initial "good" kernel. ken -- das eine Mal als Tragödie, das andere Mal als Farce