gtk-window-decorator crashed with SIGSEGV in g_object_unref()

[Paul Greindl]

Suddenly I can't move around or resize windows by clicking and dragging the title bar anymore. It seems to be some kind of problem with gtk-window-decorator as restarting it solves the problem. This happens multiply times a day...

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: compiz-gnome 1:0.9.9~daily13.03.20-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-12.21-generic 3.8.2
Uname: Linux 3.8.0-12-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.9.2-0ubuntu2
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
Date: Sat Mar 23 21:55:22 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
ExecutablePath: /usr/bin/gtk-window-decorator
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:055c]
InstallationDate: Installed on 2013-01-21 (60 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130121)
MachineType: Dell Inc. Vostro 3360
MarkForUpload: True
ProcCmdline: gtk-window-decorator
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-12-generic root=UUID=5fff55b7-3096-402e-b628-49c4e13b9221 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f3bfa293415: mov (%rax),%rdi
 PC (0x7f3bfa293415) ok
 source "(%rax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 ?? () from /usr/lib/libwnck-1.so.22
 ?? () from /usr/lib/libwnck-1.so.22
 g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? ()
 g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gtk-window-decorator crashed with SIGSEGV in g_object_unref()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 05/10/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A04
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 07X5MJ
dmi.board.vendor: Dell Inc.
dmi.board.version: FAB1
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA04:bd05/10/2012:svnDellInc.:pnVostro3360:pvr:rvnDellInc.:rn07X5MJ:rvrFAB1:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Vostro 3360
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.9~daily13.03.20-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.42-0ubuntu2
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.3-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.3-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.5-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.6-0ubuntu3b1

[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 #1061282, 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.