From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932108Ab0CJPZR (ORCPT ); Wed, 10 Mar 2010 10:25:17 -0500 Received: from smtp.turknetserver.com ([193.192.122.40]:60764 "EHLO smtp.turknetserver.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1756533Ab0CJPZP (ORCPT ); Wed, 10 Mar 2010 10:25:15 -0500 Message-ID: <4B97B9D8.6050103@turknetserver.com> Date: Wed, 10 Mar 2010 17:25:12 +0200 From: Tarkan Erimer User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.2pre) Gecko/20100308 SUSE/3.1b1-5.1 Thunderbird/3.1b1 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: [BISECTED] Re: [BUG] Linux-2.6.33 to 33-git9 intel_drm: drm_fb_helper panic References: <4B8FC4E1.4070509@turknetserver.com> <4B950200.4000305@turknetserver.com> In-Reply-To: <4B950200.4000305@turknetserver.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/08/2010 03:56 PM, Tarkan Erimer wrote: > On 03/04/2010 04:34 PM, Tarkan Erimer wrote: >> When I booted into 2.6.33, hard lock up occurs via the following error >> message at boot time : >> >> [drm:drm_fb_helper_panic] *ERROR* panic occured, switching back to text >> console >> BUG: scheduling while atomic: init/1/0x00000002 >> >> This is a KMS enabled kernel on i945 VGA. Also, I tried (I found after >> googling a bit.) with "i915.modeset=0 enable_mtrr_cleanup" and >> "enable_mtrr_cleanup" kernel boot options. But, still the same error >> occurs. >> >> This bug occurs on kernels from 2.6.33 to 2.6.33-git9. 2.6.33-rc8 works >> fine. My .config attached. >> >> Tarkan >> > Anybody care to look at this issue ? BTW; it, still, exist (tested few > mins ago.) on .33-git14, too. > > Tarkan > Today, I bisected to find out the bad commit. Here is what I found : 83d90addc829ab56ace49b10fd7d5d415448aac4 is the first bad commit commit 83d90addc829ab56ace49b10fd7d5d415448aac4 Merge: 75ef7cd 79da064 Author: Linus Torvalds Date: Wed Feb 24 07:42:42 2010 -0800 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block * 'for-linus' of git://git.kernel.dk/linux-2.6-block: Revert "block: improve queue_should_plug() by looking at IO depths"