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

[Steve Langasek]

Probably the same as bug #1029713 and bug #1031203; so the bug is persistent across versions in quantal.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: unity-services 6.0.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.5.0-7.7-generic 3.5.0
Uname: Linux 3.5.0-7-generic x86_64
ApportVersion: 2.4-0ubuntu6
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]
CrashCounter: 1
Date: Sun Aug 5 11:59:56 2012
ExecutablePath: /usr/lib/unity/unity-panel-service
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
ProcCmdline: /usr/lib/unity/unity-panel-service
SegvAnalysis:
 Segfault happened at: 0x7fdef6b1f766 <g_dbus_proxy_call_internal+54>: mov (%rbx),%rdx
 PC (0x7fdef6b1f766) ok
 source "(%rbx)" (0xaaaaaaaaaaaaaaaa) not located in a known VMA region (needed readable region)!
 destination "%rdx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 g_dbus_proxy_call_internal (proxy=0xaaaaaaaaaaaaaaaa, method_name=0x7fdeec0c2a9a "AboutToShowGroup", parameters=0x7fdee84a4cc0, flags=G_DBUS_CALL_FLAGS_NONE, timeout_msec=-1, fd_list=fd_list@entry=0x0, cancellable=0x0, callback=callback@entry=0, user_data=user_data@entry=0x0) at /build/buildd/glib2.0-2.33.6/./gio/gdbusproxy.c:2705
 g_dbus_proxy_call (proxy=<optimized out>, method_name=<optimized out>, parameters=<optimized out>, flags=<optimized out>, timeout_msec=<optimized out>, cancellable=<optimized out>, callback=0, user_data=0x0) at /build/buildd/glib2.0-2.33.6/./gio/gdbusproxy.c:3017
 ?? () from /usr/lib/x86_64-linux-gnu/libdbusmenu-glib.so.4
 g_main_dispatch (context=0x1f00690) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:2691
 g_main_context_dispatch (context=context@entry=0x1f00690) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3195
Title: unity-panel-service crashed with SIGSEGV in g_dbus_proxy_call_internal()
UpgradeStatus: Upgraded to quantal on 2012-06-11 (55 days ago)
UserGroups: adm admin cdrom dialout libvirtd lpadmin mythtv plugdev sambashare src sudo

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Apport retracing service (apport)]

StacktraceTop:
 g_dbus_proxy_call_internal (proxy=0xaaaaaaaaaaaaaaaa, method_name=0x7fdeec0c2a9a <Address 0x7fdeec0c2a9a out of bounds>, parameters=0x7fdee84a4cc0, flags=G_DBUS_CALL_FLAGS_NONE, timeout_msec=-1, fd_list=fd_list@entry=0x0, cancellable=0x0, callback=callback@entry=0, user_data=user_data@entry=0x0) at /build/buildd/glib2.0-2.33.6/./gio/gdbusproxy.c:2705
 g_dbus_proxy_call (proxy=<optimized out>, method_name=<optimized out>, parameters=<optimized out>, flags=<optimized out>, timeout_msec=<optimized out>, cancellable=<optimized out>, callback=0, user_data=0x0) at /build/buildd/glib2.0-2.33.6/./gio/gdbusproxy.c:3017
 ?? ()
 ?? ()

[Rainer Rohde (rainer-rohde)]

This just happened after I lost the window border in 12.10 alpha 3 while working with Microsoft Word under Wine and launching "unity --replace &" from the command line to get the window border back...

[Daniel van Vugt (vanvugt)]

Similar to bug 944900?

[Adam Bruce (brucey-99-deactivatedaccount)]

I think I've hit the same bug 1158514

I notice one of the dups says they were dragging and dropping at the time. I was doing the same and this is the crash related to dragging: bug 1158507 - so they may be related?

Also is 1055172 a dup of this?

[Christopher Townsend (townsend)]

This is a rather old bug that was submitted against a now unsupported release. Looking at the last bug that was dup'ed to this one, that bug was against 13.10. It appears the crash has been fixed by at 14.04, so I'm going to mark it as such.

If this does still occur, we can either reopen this bug report or open a new one.