BUG: unable to handle kernel NULL pointer dereference at 0000026c

[Taiten Peng]

kernel oops

ProblemType: KernelOops
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-9-generic 2.6.35-9.14
Regression: No
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.35-9.14-generic 2.6.35-rc5
Uname: Linux 2.6.35-9-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: taiten 1711 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 46'
   Mixer name : 'Conexant CX20561 (Hermosa)'
   Components : 'HDA:14f15051,17aa20ff,00100000'
   Controls : 14
   Simple ctrls : 7
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7XHT22WW-1.04'
   Mixer name : 'ThinkPad EC 7XHT22WW-1.04'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Thu Jul 22 16:24:53 2010
Failure: oops
Frequency: Once a day.
HibernationDevice: RESUME=UUID=49a1b773-0233-4717-be89-753133fe0fc6
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100406.1)
MachineType: LENOVO 7458PU9
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-9-generic root=UUID=1ca249c7-2e34-4ddd-ab62-eb5cac73a311 ro quiet nosplash
RelatedPackageVersions: linux-firmware 1.37
SourcePackage: linux
Title: BUG: unable to handle kernel NULL pointer dereference at 0000026c
dmi.bios.date: 03/17/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 6DET42WW (2.06 )
dmi.board.name: 7458PU9
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6DET42WW(2.06):bd03/17/2009:svnLENOVO:pn7458PU9:pvrThinkPadX200:rvnLENOVO:rn7458PU9:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7458PU9
dmi.product.version: ThinkPad X200
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

Hi Taiten,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Taiten Peng (taitenpeng)]

Verified with 2.6.35-020635rc5-generic, the problem has gone.

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu development release http://cdimage.ubuntu.com/daily-live/current/ . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]