BUG: unable to handle kernel NULL pointer dereference at 00000008

[bnet]

After upgrading the kernel to 2.6.35-19-generic on 10.10 Maverick, this error was exhibited while running sudo lshw.

brian@DEXTER:~/Downloads$ lsb_release -rd
Description: Ubuntu maverick (development branch)
Release: 10.10

Linux DEXTER 2.6.35-19-generic #28-Ubuntu SMP Sun Aug 29 06:36:51 UTC 2010 i686 GNU/Linux
Ubuntu 2.6.35-19.28-generic 2.6.35.3

ProblemType: KernelOops
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-19-generic 2.6.35-19.28
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-19.28-generic 2.6.35.3
Uname: Linux 2.6.35-19-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: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: brian 2829 F.... pulseaudio
 /dev/snd/pcmC0D0p: brian 2829 F...m pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf6adc000 irq 47'
   Mixer name : 'Intel Cantiga HDMI'
   Components : 'HDA:111d7605,102802c8,00100402 HDA:80862802,80860101,00100000'
   Controls : 19
   Simple ctrls : 11
Date: Sun Sep 5 18:42:07 2010
Failure: oops
HibernationDevice: RESUME=UUID=c9c3f835-c084-427c-8af2-776750dfce50
MachineType: Dell Inc. Latitude Z600
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-19-generic root=UUID=907680b2-fe53-43fc-98ff-f83f5bcf5b1d ro quiet splash
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
Title: BUG: unable to handle kernel NULL pointer dereference at 00000008
dmi.bios.date: 10/06/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 0CY870
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA02:bd10/06/2009:svnDellInc.:pnLatitudeZ600:pvr:rvnDellInc.:rn0CY870:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude Z600
dmi.sys.vendor: Dell Inc.

[dazza5000 (darran-kelinske)]

I tried to reproduce this on 10.10 Beta amd64 and was unable to.

[bnet (brian-nettles)]

I've been able to reproduce it many times. I simply need to reboot, run "sudo lshw", and the error occurs. I'll see if I can pull some more logs.

BUG: unable to handle kernel NULL pointer dereference at 00000008
IP: [<c0382674>] fb_open+0x54/0x1b0
Call Trace:
 [<c021b150>] ? exact_match+0x0/0x10
 [<c021ba3d>] ? chrdev_open+0xcd/0x1c0
 [<c0216794>] ? __dentry_open+0xc4/0x280
 [<c0216a39>] ? nameidata_to_filp+0x59/0x70
 [<c021b970>] ? chrdev_open+0x0/0x1c0
 [<c0221d4f>] ? finish_open+0xbf/0x1a0
 [<c022aa81>] ? dput+0x91/0x130
 [<c0222ef6>] ? do_last+0x66/0x3a0
 [<c0224c7d>] ? do_filp_open+0x19d/0x4c0