Kernel Oops - BUG: unable to handle kernel NULL pointer dereference at 000000a0; EIP is at fb_release+0x25/0x60

[Olivier Cortès]

The boot was just terminated, and I was doing nothing particular when apport noticed to me the kernel Oops.
Previous boot didn't finish properly and I needed to hard poweroff the machine (caps lock not working, sysrq not working).
This is a maverick upgrade on stock lucid, on a Netbook Sony Vaio VPCW12M1E.

For now I don't know how to reproduce the problem, because I don't even know what trigerred it. Everything seems to currently work fine on the machine, I will look further to see if any hardware doesn't work and I will report it here.

best regards,

ProblemType: KernelOops
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-10-generic 2.6.35-10.15
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.35-10.15-generic 2.6.35-rc5
Uname: Linux 2.6.35-10-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.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: olive 1285 F.... pulseaudio
CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0440000 irq 43'
   Mixer name : 'Realtek ALC262'
   Components : 'HDA:10ec0262,104d4000,00100302'
   Controls : 12
   Simple ctrls : 8
Date: Sun Jul 25 16:28:12 2010
Failure: oops
Frequency: This has only happened once.
HibernationDevice: RESUME=UUID=95082ef5-be5f-44c9-b235-e4197b937bc7
InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Release i386 (20100429.4)
MachineType: Sony Corporation VPCW12M1E
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-10-generic root=UUID=a29a60d9-0d6e-4949-8030-bae350f7c3e6 ro quiet splash
RelatedPackageVersions: linux-firmware 1.37
SourcePackage: linux
Title: BUG: unable to handle kernel NULL pointer dereference at 000000a0
dmi.bios.date: 07/13/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: R1100E1
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR1100E1:bd07/13/2009:svnSonyCorporation:pnVPCW12M1E:pvrC103WJAS:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VPCW12M1E
dmi.product.version: C103WJAS
dmi.sys.vendor: Sony Corporation

[penalvch (penalvch)]

Olivier Cortès, thank you for reporting this and helping make Ubuntu better. Maverick reached EOL on April 2012.
Please see this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We were wondering if this is still an issue in a supported release? If so, can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue in a supported release, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Also, if you could 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.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]