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

Leann Ogasawara leann.ogasawara at canonical.com
Thu Sep 16 16:08:38 UTC 2010 

** Description changed:

+ SRU Justification:
+ 
+ Impact:  Kernel oops occurs whenever the LIRC daemon loads.
+ Fix:  Apply patch to check for NULL pointer dereference (see comment #5)
+ Testcase: Confirm kernel oops occurs prior to patch being applied.  Confirm kernel oops no longer occurs after patch applied.
+ 
  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.
  
  It crashes whenever the LIRC daemon loads. To reproduce the error, I
  just have to reboot my system. My TV tuner is saa7134-based, and is
  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

** Description changed:

  SRU Justification:
  
  Impact:  Kernel oops occurs whenever the LIRC daemon loads.
  Fix:  Apply patch to check for NULL pointer dereference (see comment #5)
  Testcase: Confirm kernel oops occurs prior to patch being applied.  Confirm kernel oops no longer occurs after patch applied.
+ 
+ =====
  
  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.
  
  It crashes whenever the LIRC daemon loads. To reproduce the error, I
  just have to reboot my system. My TV tuner is saa7134-based, and is
  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

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: New => Triaged

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