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

[Papp Bence]

Binary package hint: unity

I made some changes with Ubuntu Tweak.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.4.4-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-4.31-generic 2.6.38-rc5
Uname: Linux 2.6.38-4-generic i686
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,debugspew,compiztoolbox,decor,gnomecompat,vpswitch,grid,resize,mousepoll,move,place,wall,regex,session,animation,workarounds,wobbly,expo,ezoom,staticswitcher,fade,scale,unityshell]
CompositorRunning: compiz
CrashCounter: 1
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x800
 edid-base64: AP///////wBMo0U0AAAAAAAQAQOAIRV4Cof1lFdPjCcnUFQAAAABAQEBAQEBAQEBAQEBAQEB7hoAgFAgEDAQMBMAS88QAAAZAAAADwAAAAAAAAAAACOHAmQBAAAA/gBTQU1TVU5HCiAgICAgAAAA/gBMVE4xNTRYMy1MMDMKAGM=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Sun Feb 20 21:55:59 2011
DistUpgraded: Yes, recently upgraded Log time: 2011-02-20 15:20:39.232171
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/lib/unity/unity-panel-service
GraphicsCard:
 Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: Gateway 2000 Device [107b:0366]
   Subsystem: Gateway 2000 Device [107b:0366]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
MachineType: Gateway ML6227Q
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 LC_MESSAGES=en_GB.utf8
 LANGUAGE=en_GB:en
 LANG=hu_HU.UTF-8
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-4-generic root=UUID=48089a97-fc59-40cc-b11a-a502c46a6152 ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-4.31-generic 2.6.38-rc5
Renderer: Unknown
SegvAnalysis:
 Segfault happened at: 0x9bdf57: testb $0x4,0x10(%eax)
 PC (0x009bdf57) ok
 source "$0x4" ok
 destination "0x10(%eax)" (0x00000010) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 ?? () from /lib/libglib-2.0.so.0
 ?? () from /lib/libglib-2.0.so.0
 g_variant_new_va () from /lib/libglib-2.0.so.0
 g_variant_builder_add () from /lib/libglib-2.0.so.0
 ?? ()
Title: unity-panel-service crashed with SIGSEGV in g_variant_new_va()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 06/29/2007
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 77.15
dmi.board.vendor: Gateway
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 8
dmi.chassis.vendor: Gateway
dmi.chassis.version: Rev.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr77.15:bd06/29/2007:svnGateway:pnML6227Q:pvr3408386R:rvnGateway:rn:rvr:cvnGateway:ct8:cvrRev.1:
dmi.product.name: ML6227Q
dmi.product.version: 3408386R
dmi.sys.vendor: Gateway
version.compiz: compiz 1:0.9.2.1+glibmainloop4-0ubuntu11
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1~git20110215.cc1636b6-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu6
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-1ubuntu9
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu4

[Apport retracing service (apport)]

StacktraceTop:
 g_variant_is_trusted (value=0x0)
 g_variant_builder_add_value (builder=0xbfd06400, value=0x0)
 ?? ()

[Alex Launi (alexlauni)]

Are you still seeing this crash in the most recent release of Unity? We fixed a bunch of crashers, hopefully we fixed yours!

[Omer Akram (om26er)]

executing the command to show/hide your nick name in the MeMenu seems to create this crash reliably.
gconftool -t int -s /system/indicator/me/display 1

[Omer Akram (om26er)]

use gconftool -t int -s /system/indicator/me/display 0 since default it already 1.

[Neil J. Patel (njpatel)]

Unable to reproduce this with latest Unity, please re-open if it's still an issue, thanks!

[Omer Akram (om26er)]

Hey Neil, I can still recreate cause unity-panel-service to crash with latest unity just by

$ gconftool -t int -s /system/indicator/me/display 0

and then clicking on system indicators.