compiz crashed with SIGSEGV in nux::WindowCompositor::DndEventCycle()

[Donarsson]

I was moving a layer in GIMP via drag-and-drop and when I released the mouse button, the display froze for a while, then Compiz restarted and this crash report was produced.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: compiz-core 1:0.9.11.2+14.04.20140714-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3.3
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
CurrentDesktop: Unity
Date: Wed Sep 10 19:04:46 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 4.3.10, 3.13.0-33-generic, x86_64: installed
 virtualbox, 4.3.10, 3.13.0-34-generic, x86_64: installed
 virtualbox, 4.3.10, 3.13.0-35-generic, x86_64: installed
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer Device [1297:2020]
InstallationDate: Installed on 2014-04-10 (153 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140410)
MachineType: A15HV01 A15HV01
ProcCmdline: compiz
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-35-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7fd8db905527 <_ZN3nux16WindowCompositor13DndEventCycleERNS_5EventE+263>: mov (%rax),%rax
 PC (0x7fd8db905527) ok
 source "(%rax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 nux::WindowCompositor::DndEventCycle(nux::Event&) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
 nux::WindowCompositor::ProcessEvent(nux::Event&) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
 nux::WindowThread::DoProcessEvent(nux::Event&) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
 nux::nux_event_dispatch(_GSource*, int (*)(void*), void*) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
 g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: compiz crashed with SIGSEGV in nux::WindowCompositor::DndEventCycle()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo
dmi.bios.date: 09/02/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.04.QUA
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: HURONRIVER
dmi.board.vendor: INTEL Corporation
dmi.board.version: To be filled by O.E.M.
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.:bvr1.04.QUA:bd09/02/2011:svnA15HV01:pnA15HV01:pvrTobefilledbyO.E.M.:rvnINTELCorporation:rnHURONRIVER:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: A15HV01
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: A15HV01
version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Mon Sep 8 16:36:12 2014
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 12890
 vendor SEC
xserver.version: 2:1.15.1-0ubuntu2.1

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1363959, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.