compiz crashed with SIGSEGV in _XFreeEventCookies()

[Rick Martensen]

I tried to start an application (HTML file) from CD with the Firefox 7 browser. Compiz was crashing immediately!

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: compiz-core 1:0.9.5.94+bzr2803-0ubuntu5
Uname: Linux 2.6.36-02063604-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,vpswitch,grid,mousepoll,place,gnomecompat,regex,snap,animation,move,workarounds,resize,wall,session,imgpng,fade,unitymtgrabhandles,expo,scale,ezoom,unityshell]
CompositorRunning: compiz
Date: Thu Sep 22 18:31:22 2011
DistUpgraded: Log time: 2011-09-21 16:58:30.032202
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.1.2, 3.0.0-11-generic, x86_64: installed
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0212]
   Subsystem: Acer Incorporated [ALI] Device [1025:0212]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901)
MachineType: Acer Aspire 5732Z
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, no user)
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.36-02063604-generic root=UUID=a7c4e251-cbb7-42ae-ae70-a9779b5648c2 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7fe3193bf4f3 <_XFreeEventCookies+19>: mov 0x40(%rax),%rbp
 PC (0x7fe3193bf4f3) ok
 source "0x40(%rax)" (0x00001290) not located in a known VMA region (needed readable region)!
 destination "%rbp" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 _XFreeEventCookies () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 XNextEvent () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 PrivateScreen::processEvents() ()
 CompEventSource::callback() ()
 Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/libglibmm-2.4.so.1
Title: compiz crashed with SIGSEGV in _XFreeEventCookies()
UpgradeStatus: Upgraded to oneiric on 2011-09-21 (1 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 01/22/2010
dmi.bios.vendor: Acer
dmi.bios.version: V3.06
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Aspire 5732Z
dmi.board.vendor: Acer
dmi.board.version: V3.06
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V3.06
dmi.modalias: dmi:bvnAcer:bvrV3.06:bd01/22/2010:svnAcer:pnAspire5732Z:pvrV3.06:rvnAcer:rnAspire5732Z:rvrV3.06:cvnAcer:ct10:cvrV3.06:
dmi.product.name: Aspire 5732Z
dmi.product.version: V3.06
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.5.94+bzr2803-0ubuntu5
version.ia32-libs: ia32-libs 20090808ubuntu22
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

[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 #851472, 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.