BUG: unable to handle kernel NULL pointer dereference at (null)

computer freezes watching a video in smplayer.
The monitor turn off and on.
After that nothing responds.

ProblemType: KernelOops
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-16-lowlatency 3.13.0-16.36
ProcVersionSignature: Ubuntu 3.13.0-16.36-lowlatency 3.13.5
Uname: Linux 3.13.0-16-lowlatency x86_64
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ruben 2301 F.... pulseaudio
 /dev/snd/controlC0: ruben 2301 F.... pulseaudio
Date: Sat Mar 8 10:44:52 2014
DuplicateSignature: BUG: unable to handle kernel NULL pointer dereference at (null) RIP: 0010:location location memcpy+0xd/0x110
Failure: oops
HibernationDevice: RESUME=UUID=8c36e8e0-c964-4d5c-ba2c-bad380a91842
InstallationDate: Installed on 2013-12-20 (77 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
IwConfig:
 eth0 no wireless extensions.

 lo no wireless extensions.
Lsusb:
 Bus 001 Device 004: ID 0bda:0111 Realtek Semiconductor Corp. RTS5111 Card Reader Controller
 Bus 001 Device 003: ID 07ca:a835 AVerMedia Technologies, Inc.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 002: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-16-lowlatency root=UUID=4c60bb71-7633-49c5-a615-c16182697c70 ro persistent radeon.dpm=1 radeon.audio=1 quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu5
RfKill:

SourcePackage: linux
Title: BUG: unable to handle kernel NULL pointer dereference at (null)
UpgradeStatus: Upgraded to trusty on 2014-01-02 (64 days ago)
dmi.bios.date: 10/31/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.40
dmi.board.asset.tag: BC5FF4813CA6
dmi.board.name: N68C-GS FX
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.40:bd10/31/2012:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnN68C-GSFX:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.