From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753100AbZDWFWX (ORCPT ); Thu, 23 Apr 2009 01:22:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751136AbZDWFWO (ORCPT ); Thu, 23 Apr 2009 01:22:14 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:55687 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751002AbZDWFWN (ORCPT ); Thu, 23 Apr 2009 01:22:13 -0400 Date: Wed, 22 Apr 2009 22:20:31 -0700 From: Andrew Morton To: Gregory Haskins Cc: "linux-kernel@vger.kernel.org" Subject: Re: Crash in v2.6.30-rc3 (regression from 30-rc2) Message-Id: <20090422222031.17d9d72e.akpm@linux-foundation.org> In-Reply-To: <49EFD2A4.6080801@novell.com> References: <49EFD2A4.6080801@novell.com> X-Mailer: Sylpheed 2.4.8 (GTK+ 2.12.5; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 22 Apr 2009 22:29:56 -0400 Gregory Haskins wrote: > Hi All, > > FYI: I am seeing this when moving from 30-rc2 to 30-rc3 on a 4-way > x86_64 box. > > I have since reverted back to rc2, but can easily spin up the new kernel > again to decode more info or try a fix, if desired. > > One data point I do have is that the box seemed to have booted when I > forgot to add console=ttyS0 to the kernel args. I suspect the serial > console is just changing timing, but its 100% reproducible in this setup. > > BUG: unable to handle kernel NULL pointer dereference at (null) > IP: [] rb_erase+0x132/0x28c > PGD 13a11e067 PUD 13dd1d067 PMD 0 > Oops: 0000 [#1] SMP > last sysfs file: > /sys/devices/pci0000:00/0000:00:1f.1/host6/target6:0:0/6:0:0:0/type > CPU 0 > Modules linked in: i5000_edac shpchp rtc_core soundcore thermal sr_mod > parport_pc processor button libphy natsemi cdrom i2c_core edac_core > parport snd_page_alloc pcspkr serio_raw pci_hotplug rtc_lib kvm_intel sg > joydev kvm usbhid hid linear ehci_hcd uhci_hcd sd_mod crc_t10dif usbcore > dm_snapshot edd fan thermal_sys hwmon dm_mod ext3 mbcache jbd > ide_pci_generic piix ide_core ata_generic ata_piix ahci libata scsi_mod > Pid: 1561, comm: vgchange Not tainted 2.6.30-rc3-vbus #30 Precision > WorkStation 490 > RIP: 0010:[] [] rb_erase+0x132/0x28c I believe this is being worked on over in the thread titled "[BUG] rbtree bug with mmotm 2009-04-14-17-24".