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

[mangelasakis]

The unity crashes when I configure the sound from the sound indicator menu.

ProblemType: CrashDistroRelease: Ubuntu 11.10
Package: unity-services 4.10.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
Uname: Linux 3.0.0-9-generic x86_64
Architecture: amd64
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
Date: Tue Aug 30 20:33:52 2011
DistUpgraded: Log time: 2011-08-30 19:20:45.854481
DistroCodename: oneiric
DistroVariant: ubuntu
ExecutablePath: /usr/lib/unity/unity-panel-service
GraphicsCard:
 ATI Technologies Inc RS880 [Radeon HD 4200] [1002:9710] (prog-if 00 [VGA controller])
   Subsystem: Giga-byte Technology Device [1458:d000]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
MachineType: Gigabyte Technology Co., Ltd. GA-MA785GT-UD3H
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-9-generic root=UUID=4180b82e-3174-4897-ab3e-283f78b4dd72 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f05d1b667aa: callq 0x7f05d1b90320 <g_value_peek_pointer>
 PC (0x7f05d1b667aa) ok
 source "0x7f05d1b90320" (0x7f05d1b90320) ok
 destination "(%rsp)" (0x7fff08e64000) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11SourcePackage: unity
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: unity-panel-service crashed with SIGSEGV in g_closure_invoke()
UpgradeStatus: Upgraded to oneiric on 2011-08-30 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 03/19/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F6
dmi.board.name: GA-MA785GT-UD3H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF6:bd03/19/2010:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA785GT-UD3H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA785GT-UD3H:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-MA785GT-UD3H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.5.92+bzr2791-0ubuntu1
version.ia32-libs: ia32-libs N/A
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+7ubuntu6
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

TEST STEPS:

1. open the sound indicator;
2. keep raising/lowering the volume
3. The crash should happen after a few raises/lowers

[Apport retracing service (apport)]

StacktraceTop:
 g_type_class_meta_marshal (closure=0xcd4390, return_value=0x0, n_param_values=2, param_values=0x7f05bee9c150, invocation_hint=0x7fff08e64180, marshal_data=0x110) at /build/buildd/glib2.0-2.29.16/./gobject/gclosure.c:881
 g_closure_invoke (closure=0xcd4390, return_value=0x0, n_param_values=2, param_values=0x7f05bee9c150, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.29.16/./gobject/gclosure.c:773
 signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x10fa020, emission_return=0x0, instance_and_params=0x7f05bee9c150) at /build/buildd/glib2.0-2.29.16/./gobject/gsignal.c:3201
 g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=0x7fff08e64368) at /build/buildd/glib2.0-2.29.16/./gobject/gsignal.c:3002
 g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.29.16/./gobject/gsignal.c:3059