unity-panel-service crashed with SIGSEGV in event_filter()

[Carla Sella]

I do not know what causes the crash. It's happening on a virutal machine in Virtualbox I upgraded to 12.10 from 12.04.1.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: unity-services 6.4.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.5.0-14.19-generic 3.5.3
Uname: Linux 3.5.0-14-generic i686
ApportVersion: 2.5.2-0ubuntu1
Architecture: i386
Date: Tue Sep 18 13:01:31 2012
DistUpgraded: 2012-09-13 11:27:20,233 DEBUG enabling apt cron job
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus:
 open-vm-tools, 2012.05.21, 3.5.0-14-generic, i686: installed
 vboxguest, 4.1.22, 3.5.0-14-generic, i686: installed
 virtualbox-guest, 4.1.18, 3.5.0-14-generic, i686: installed (WARNING! Diff between built and installed module!) (WARNING! Diff between built and installed module!) (WARNING! Diff between built and installed module!)
ExecutablePath: /usr/lib/unity/unity-panel-service
GraphicsCard: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter [80ee:beef] (prog-if 00 [VGA controller])
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
Lsusb:
 Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-14-generic root=UUID=92ce06bb-f265-4ce4-b250-57c586409ffc ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x8052431: cmp %eax,(%edx)
 PC (0x08052431) ok
 source "%eax" ok
 destination "(%edx)" (0x656e6547) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 ?? ()
 ?? () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
 gdk_display_get_event () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
Title: unity-panel-service crashed with SIGSEGV in gdk_display_get_event()
UpgradeStatus: Upgraded to quantal on 2012-09-13 (5 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
version.compiz: compiz 1:0.9.8.0-0ubuntu1
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120917.7cfd42ce-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120917.7cfd42ce-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120713.6ef1ad6a-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.7-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu1

[Apport retracing service (apport)]

StacktraceTop:
 event_filter (ev=0xbf9eff1c, gev=0x8ccc770, self=0x8c01160) at /build/buildd/unity-6.4.0/services/panel-service.c:369
 gdk_event_apply_filters (xevent=xevent@entry=0xbf9eff1c, event=event@entry=0x8ccc770, window=window@entry=0x0) at /build/buildd/gtk+3.0-3.5.16/./gdk/x11/gdkeventsource.c:81
 gdk_event_source_translate_event (xevent=0xbf9eff1c, event_source=0x8c07f80) at /build/buildd/gtk+3.0-3.5.16/./gdk/x11/gdkeventsource.c:195
 _gdk_x11_display_queue_events (display=0x8bfd840) at /build/buildd/gtk+3.0-3.5.16/./gdk/x11/gdkeventsource.c:332
 gdk_display_get_event (display=display@entry=0x8bfd840) at /build/buildd/gtk+3.0-3.5.16/./gdk/gdkdisplay.c:310

[Stephen M. Webb (bregma)]

See also https://errors.ubuntu.com/problem/a4acc4af8401917b869e873f5715d162e6b56e80

[Will Cooke (willcooke)]

Sorry folks, but as part of the bug clean up ahead of 16.04 I'm marking this as invalid because it affects an Ubuntu release which is now unsupported. If you can still recreate this bug in a supported release please do open a new bug and we can triage it for consideration in the 16.04 development cycle.