[Bug 574899] [NEW] segmentation fault on shutdown caused by new 2.6.31-21 clockevents.c

[Michael Pardee]

Public bug reported:

After upgrading to linux-image-2.6.31-21-generic last week (karmic-
updates repository enabled), all of our Gateway E4300 machines end with
a segmentation fault instead of shutting down properly and completely.
Several other models of hardware are unaffected.  This is consistently
observed across several hundred machines.

The 2.6.31-21.59 changelog includes this:
  * clockevents: Prevent clockevent_devices list corruption on cpu hotplug
    - LP: #509730

Reverting to linux-image-2.6.31-20-generic prevents the problem, as does
booting with nolapic (but you lose SMP, or hyperthreading in the case of
the E4300).  Also, rebooting does not exhibit the problem, only halt.

This appears to be the same or a nearly identical bug reported in the last few months in other distros:
http://bugs.gentoo.org/show_bug.cgi?id=312767
http://lists.opensuse.org/opensuse-bugs/2010-02/msg01527.html
https://bugzilla.kernel.org/show_bug.cgi?id=15005
https://bugzilla.redhat.com/show_bug.cgi?id=558231

But this is a new regression for Ubuntu.

On the screen the message begins (hand transcribed by someone else):

* Stopping early crypto disks...
  ...done.
* Will now halt
    ---------[ cut here]----------------------
...    kernel BUG at /build/buildd/linux-2.6.31/kernell/time/clockevents.c:262
...    invalid opcode: 0000 [#1] SMP

and ends with:

...  EIP: [>c0168c1d>] clockevents_notify+0xfd/0x110 SS:ESP ...
...  [ end trace 66b1feeaae5006c8 ]---
Segmentation Fault

ProblemType: Bug
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC880 Analog [ALC880 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  gvuser    16332 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0x502c0000 irq 16'
   Mixer name	: 'Realtek ALC880'
   Components	: 'HDA:10ec0880,08600000,00090000'
   Controls      : 20
   Simple ctrls  : 12
Date: Mon May  3 22:29:13 2010
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=9e4b0515-e360-4a27-9cb5-bedaae20c5c2
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
MachineType: Gateway E4300
Package: linux-image-2.6.31-21-generic 2.6.31-21.59
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-21-generic root=UUID=d9a85527-f97d-45e4-8d48-290d7bbbfe09 ro noquiet nosplash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-21.59-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-21-generic N/A
 linux-firmware 1.26
RfKill:
 
SourcePackage: linux
Uname: Linux 2.6.31-21-generic i686
dmi.bios.date: 10/31/2005
dmi.bios.vendor: Intel Corp.
dmi.bios.version: SE91510J.15A.2609.2005.1031.1237
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: D915GUX
dmi.board.vendor: Intel Corporation
dmi.board.version: AAC85199-203
dmi.chassis.asset.tag: NONE
dmi.chassis.type: 3
dmi.chassis.vendor: Gateway
dmi.chassis.version: WTN01A01
dmi.modalias: dmi:bvnIntelCorp.:bvrSE91510J.15A.2609.2005.1031.1237:bd10/31/2005:svnGateway:pnE4300:pvr4000983:rvnIntelCorporation:rnD915GUX:rvrAAC85199-203:cvnGateway:ct3:cvrWTN01A01:
dmi.product.name: E4300
dmi.product.version: 4000983
dmi.sys.vendor: Gateway

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

-- 
segmentation fault on shutdown caused by new 2.6.31-21 clockevents.c
https://bugs.launchpad.net/bugs/574899
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