Public bug reported:

i m trying to make driver for my multiport serial device

ProblemType: KernelOops
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: ALC662 rev1 Analog [ALC662 rev1 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  mrt        1323 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xe0280000 irq 22'
   Mixer name   : 'Realtek ALC662 rev1'
   Components   : 'HDA:10ec0662,8086d618,00100101'
   Controls      : 24
   Simple ctrls  : 14
Date: Sun Jul 17 16:14:49 2011
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=b4b50e95-6b0f-4081-86f4-a16fdd234b54
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
Lsusb:
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 005 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 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic 
root=UUID=2ae688e5-def0-4c2d-b59b-1d262aece49d ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic N/A
 linux-firmware 1.24
RfKill:
 
SourcePackage: linux
Tags: kernel-oops
Title: BUG: unable to handle kernel NULL pointer dereference at 00000004
Uname: Linux 2.6.31-14-generic i686
dmi.bios.date: 10/19/2010
dmi.bios.vendor: Intel Corp.
dmi.bios.version: MOPNV10N.86A.0400.2010.1019.1048
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: D510MO
dmi.board.vendor: Intel Corporation
dmi.board.version: AAE76523-404
dmi.chassis.type: 2
dmi.modalias: 
dmi:bvnIntelCorp.:bvrMOPNV10N.86A.0400.2010.1019.1048:bd10/19/2010:svn:pn:pvr:rvnIntelCorporation:rnD510MO:rvrAAE76523-404:cvn:ct2:cvr:

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


** Tags: apport-kerneloops i386 kernel-oops

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https://bugs.launchpad.net/bugs/811827

Title:
  BUG: unable to handle kernel NULL pointer dereference at 00000004

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