[i915] NULL pointer dereference in intel_tv_detect()

[gackthugo]

#Found bug in Ubuntu 10.04 lucid alpha2
#kernel 2.6.32.14
#
#when configurating some compiz efects like water effect, when active all system crashes
#changing the collours of skydome on cube desktop system crashes
#xserver-xorg-video-intel bug also was reported by system
#
#All of it happened after updating from kernel 2.6.32.13-pae to 2.6.32.14-generic

ProblemType: KernelOops
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
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: hugo 1572 F.... pulseaudio
CRDA: Error: [Errno 2] Ficheiro ou directoria inexistente
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0x72400000 irq 22'
   Mixer name : 'Conexant CX20549 (Venice)'
   Components : 'HDA:14f15045,103c30d9,00100100'
   Controls : 18
   Simple ctrls : 8
Date: Mon Feb 22 14:56:14 2010
DistroRelease: Ubuntu 10.04
Failure: oops
HibernationDevice: RESUME=UUID=c859c665-9d99-440e-b9ed-5adbc0e83e10
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100113)
Lsusb:
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 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: Hewlett-Packard Presario C700 Notebook PC
Package: linux-image-2.6.32-13-generic 2.6.32-13.18
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-14-generic root=UUID=59200b3e-e26c-4471-a9fa-e9ecb2550195 ro quiet splash
ProcVersionSignature: Ubuntu 2.6.32-14.20-generic
Regression: Yes
RelatedPackageVersions: linux-firmware 1.30
Reproducible: Yes
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
TestedUpstream: Yes
Title: BUG: unable to handle kernel NULL pointer dereference at 00000108
Uname: Linux 2.6.32-14-generic i686
dmi.bios.date: 09/25/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.34
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 30D9
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 83.21
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.34:bd09/25/2008:svnHewlett-Packard:pnPresarioC700NotebookPC:pvrF.34:rvnHewlett-Packard:rn30D9:rvr83.21:cvnHewlett-Packard:ct10:cvrN/A:
dmi.product.name: Presario C700 Notebook PC
dmi.product.version: F.34
dmi.sys.vendor: Hewlett-Packard

[Chase Douglas (chasedouglas)]

@gackthugo:

Compiz effects rely on cutting edge support in the drivers. As such, I suggest opening a bug upstream in bugs.freedesktop.org against the intel graphics driver. We can then link the new bug report to this one for tracking purposes.

Thanks

[Jeremy Foshee (jeremyfoshee)]

marking incomplete as we are awaiting an upstream bug number to add asa bug watch.

~JFo

[Milan Bouchet-Valat (nalimilan)]

I've separated these reports from bug 553176 because they don't happen in the same function. We'll see whether they are related or not.

[Manoj Iyer (manjo)]

http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/

Can you please try the mainline kernel and see if this problem still exists?

[Manoj Iyer (manjo)]

Neither this bug or its duplicates have any further information from the originators of the bug wrt to the questions that were asked by the members of the kernel team. I am marking this bug as invalid, please re-open the bug when you have further information that will help us debug this issue.

[Dave Gilbert (ubuntu-treblig)]

Are bugs 624834, 631743, 631872, 640666, 648535, 651012, 651133 all instances of this one?

Dave