[Bug 624701] [NEW] BUG: unable to handle kernel NULL pointer dereference at (null)

[Brian Rogers]

Public bug reported:

Something like half the time when my system starts, I get an oops in
dmesg, which appears to be related to the IR receiver in my TV tuner.
This problem didn't happen in Lucid's 2.6.32 kernel. So far I haven't
witnessed any harmful effects.

I just got a second oops after something crashed X and made it restart,
so I suspect the error is being triggered by X. That would explain why
the error occurs about ten seconds after the driver is done loading.

To reproduce the error, I just have to reboot my system until it
happens. My TV tuner is saa7134-based, and called "MSI TVAnywhere Plus."

ProblemType: KernelOops
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-19-generic 2.6.35-19.25
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-19.25-generic 2.6.35.3
Uname: Linux 2.6.35-19-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  brian      2916 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'CK804'/'NVidia CK804 with ALC850 at irq 22'
   Mixer name	: 'Realtek ALC850 rev 0'
   Components	: 'AC97a:414c4790'
   Controls      : 42
   Simple ctrls  : 27
Card2.Amixer.info:
 Card hw:2 'SAA7134'/'saa7133[0] at 0xfdeff000 irq 16'
   Mixer name	: 'SAA7134 Mixer'
   Components	: ''
   Controls      : 6
   Simple ctrls  : 3
Date: Thu Aug 26 07:45:26 2010
Failure: oops
HibernationDevice: RESUME=UUID=61a5c693-e163-4e66-85f1-7b930d941f63
Lsusb:
 Bus 002 Device 004: ID 046d:c00e Logitech, Inc. M-BJ58/M-BJ69 Optical Wheel Mouse
 Bus 002 Device 003: ID 046d:c312 Logitech, Inc. DeLuxe 250 Keyboard
 Bus 002 Device 002: ID 1131:1001 Integrated System Solution Corp. KY-BT100 Bluetooth Adapter
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Unknow Unknow
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-19-generic root=UUID=87050cee-e9c4-4381-8753-17615d08427b ro nouveau.tv_norm=NTSC-M nouveau.modeset=1 quiet
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
Title: BUG: unable to handle kernel NULL pointer dereference at (null)
WpaSupplicantLog:
 
dmi.bios.date: 11/14/2007
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: KN9 Series(NF-CK804)
dmi.board.vendor: http://www.abit.com.tw/
dmi.board.version: 1.x
dmi.chassis.type: 3
dmi.chassis.vendor: Unknow
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd11/14/2007:svnUnknow:pnUnknow:pvrUnknow:rvnhttp//www.abit.com.tw/:rnKN9Series(NF-CK804):rvr1.x:cvnUnknow:ct3:cvr:
dmi.product.name: Unknow
dmi.product.version: Unknow
dmi.sys.vendor: Unknow

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


** Tags: amd64 apport-kerneloops kernel-oops kernel-uncat maverick needs-upstream-testing regression-release

-- 
BUG: unable to handle kernel NULL pointer dereference at (null)
https://bugs.launchpad.net/bugs/624701
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