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

[shankao]

While using Virtualbox, I couldn't access the global menu

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: unity-services 7.1.0+13.10.20130812.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.10.0-6.17-generic 3.10.3
Uname: Linux 3.10.0-6-generic x86_64
ApportVersion: 2.12-0ubuntu3
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Tue Aug 13 12:29:54 2013
EcryptfsInUse: Yes
ExecutablePath: /usr/lib/unity/unity-panel-service
InstallationDate: Installed on 2012-11-25 (261 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120627)
MarkForUpload: True
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 PATH=(custom, no user)
 LANGUAGE=en_SG:en
 XDG_RUNTIME_DIR=<set>
 LANG=en_SG.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x40a8f7: cmp %rax,(%r15)
 PC (0x0040a8f7) ok
 source "%rax" ok
 destination "(%r15)" (0xaaaaaaaaaaaaaaaa) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 ?? ()
 ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
 gdk_display_get_event () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
Title: unity-panel-service crashed with SIGSEGV in gdk_display_get_event()
UpgradeStatus: Upgraded to saucy on 2012-11-25 (261 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 gdk_event_apply_filters (xevent=xevent@entry=0x7fff58eee500, event=event@entry=0x1503980, window=window@entry=0x0) at /build/buildd/gtk+3.0-3.8.2/./gdk/x11/gdkeventsource.c:81
 gdk_event_source_translate_event (xevent=0x7fff58eee500, event_source=0x1404000) at /build/buildd/gtk+3.0-3.8.2/./gdk/x11/gdkeventsource.c:195
 _gdk_x11_display_queue_events (display=0x13fd030) at /build/buildd/gtk+3.0-3.8.2/./gdk/x11/gdkeventsource.c:338
 gdk_display_get_event (display=display@entry=0x13fd030) at /build/buildd/gtk+3.0-3.8.2/./gdk/gdkdisplay.c:313