unity-window-decorator crashed with SIGSEGV in event_filter_func()

[Ekrem SEREN]

Binary package hint: compiz

Please review for duplicate. I couldn't decide if this is a duplicate of the bug #726101 or not.

Seems to happen after I login and run an application.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-gnome 1:0.9.4git20110322-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86 Kernel Module 270.30 Fri Feb 25 14:34:41 PST 2011
 GCC version: gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-6ubuntu5)
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
CrashCounter: 1
CurrentDmesg:
 [ 21.729310] EXT4-fs (sda4): re-mounted. Opts: errors=remount-ro,commit=0
 [ 26.472413] EXT4-fs (sda4): re-mounted. Opts: errors=remount-ro,commit=0
 [ 27.147831] eth0: no IPv6 routers present
 [ 628.455416] unity-window-de[1471]: segfault at 224 ip 080584d9 sp bfe493b0 error 4 in unity-window-decorator[8048000+17000]
Date: Mon Mar 28 15:09:20 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus: nvidia-current, 270.30, 2.6.38-7-generic, i686: installed
ExecutablePath: /usr/bin/unity-window-decorator
GraphicsCard: nVidia Corporation G96 [GeForce 9500 GT] [10de:0640] (rev a1) (prog-if 00 [VGA controller])
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110323)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110323)
JockeyStatus: xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
MachineType: Gigabyte Technology Co., Ltd. P55-US3L
ProcCmdline: /usr/bin/unity-window-decorator
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=448f6495-8b3e-4115-b780-3639b8ccb28b ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-7.39-generic 2.6.38
Renderer: Unknown
SegvAnalysis:
 Segfault happened at: 0x80584d9 <event_filter_func+649>: mov 0x224(%edx),%eax
 PC (0x080584d9) ok
 source "0x224(%edx)" (0x00000224) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 event_filter_func ()
 ?? () from /usr/lib/libgdk-x11-2.0.so.0
 ?? () from /usr/lib/libgdk-x11-2.0.so.0
 ?? () from /usr/lib/libgdk-x11-2.0.so.0
 g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
Title: unity-window-decorator crashed with SIGSEGV in event_filter_func()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 06/24/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: FH
dmi.board.name: P55-US3L
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrFH:bd06/24/2010:svnGigabyteTechnologyCo.,Ltd.:pnP55-US3L:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP55-US3L:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: P55-US3L
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.4git20110322-0ubuntu5
version.libdrm2: libdrm2 2.4.23-1ubuntu5
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu11
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #726101, 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.