compiz crashed with SIGSEGV in frame_device_get_property()

This happened under high load, when trying to switch workspaces.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: compiz-core 1:0.9.11+14.04.20140303-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
NonfreeKernelModules: nvidia wl
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Jest katalogiem: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 331.38 Wed Jan 8 19:32:30 PST 2014
 GCC version: gcc version 4.8.2 (Ubuntu/Linaro 4.8.2-14ubuntu4)
.proc.driver.nvidia.warnings.fbdev:
 Your system is not currently configured to drive a VGA console
 on the primary VGA device. The NVIDIA Linux graphics driver
 requires the use of a text-mode VGA console. Use of other console
 drivers including, but not limited to, vesafb, may result in
 corruption and stability problems, and is not supported.
.tmp.unity.support.test.0:

ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CrashCounter: 1
CurrentDesktop: Unity
Date: Wed Mar 5 08:56:46 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 NVIDIA Corporation GF119M [NVS 4200M] [10de:1056] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0493]
MachineType: Dell Inc. Latitude E6420
ProcCmdline: compiz --replace
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-12-generic root=UUID=3af29d5f-e00a-409b-9d57-1ad69dce69d9 ro splash quiet vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f3c9a8ec570: cmpl $0x9,(%rdi)
 PC (0x7f3c9a8ec570) ok
 source "$0x9" ok
 destination "(%rdi)" (0x00000000) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libframe.so.6
 frame_device_get_property () from /usr/lib/x86_64-linux-gnu/libframe.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libgrail.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libgrail.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libgrail.so.6
Title: compiz crashed with SIGSEGV in frame_device_get_property()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sbuild sudo vboxusers
dmi.bios.date: 07/11/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A14
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA14:bd07/11/2012:svnDellInc.:pnLatitudeE6420:pvr01:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6420
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.11+14.04.20140303-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0~rc3-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0~rc3-0ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Mon Mar 3 14:20:40 2014
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.15.0-1ubuntu6