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

[ubby]

Binary package hint: unity

When opening Evolution mail I get this bug.
Ubuntu 11.04 daily build live cd from today with the latest updates.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.2.8-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-11.25-generic 2.6.37-rc7
Uname: Linux 2.6.37-11-generic x86_64
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/allscreens/options/active_plugins'
Date: Mon Dec 27 09:59:34 2010
ExecutablePath: /usr/lib/unity/unity-panel-service
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101227)
LiveMediaBuild_: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101227)
MachineType: Gigabyte Technology Co., Ltd. P35-DQ6
PciDisplay: 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV670PRO [Radeon HD 3850] [1002:9505] (prog-if 00 [VGA controller])
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 LC_MESSAGES=en_AG.utf8
 LANGUAGE=en_US.UTF-8:en
 LANG=en_US.UTF-8
ProcKernelCmdLine: file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
ProcVersionSignature_: Ubuntu 2.6.37-11.25-generic 2.6.37-rc7
RelatedPackageVersions:
 xserver-xorg 1:7.5+6ubuntu6
 libgl1-mesa-glx 7.9+repack-1ubuntu3
 libdrm2 2.4.22-2ubuntu1
 xserver-xorg-video-intel 2:2.13.901-2ubuntu2
 xserver-xorg-video-ati 1:6.13.2-1ubuntu2
SegvAnalysis:
 Segfault happened at: 0x7fe9184bca68 <g_type_check_instance_is_a+184>: testb $0x4,0x16(%rdx)
 PC (0x7fe9184bca68) ok
 source "$0x4" ok
 destination "0x16(%rdx)" (0x00003d62) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 g_type_check_instance_is_a () from /usr/lib/libgobject-2.0.so.0
 gtk_label_set_text_with_mnemonic () from /usr/lib/libgtk-x11-2.0.so.0
 g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
 ?? () from /usr/lib/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
Title: unity-panel-service crashed with SIGSEGV in g_type_check_instance_is_a()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
XsessionErrors:
 (nautilus:4999): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (nautilus:4999): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
dmi.bios.date: 05/11/2007
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F4
dmi.board.name: P35-DQ6
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd05/11/2007:svnGigabyteTechnologyCo.,Ltd.:pnP35-DQ6:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP35-DQ6:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: P35-DQ6
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
glxinfo: Error: [Errno 2] No such file or directory
system: distro = Ubuntu, architecture = x86_64, kernel = 2.6.37-11-generic

[Apport retracing service (apport)]

StacktraceTop:
 g_type_check_instance_is_a (
 ?? ()
 IA__gtk_label_get_type ()
 IA__gtk_label_set_text_with_mnemonic (label=0x0,
 g_closure_invoke (closure=0x2853f30,

[Neil J. Patel (njpatel)]

Looks like one of the indicators crashed...

[Michael Terry (mterry)]

Neil, I think you can close this. I believe libdbusmenu 0.3.96-0ubuntu1 fixed this by correctly disconnecting from label change signals when a menu is disposed.

[Neil J. Patel (njpatel)]

Thanks mterry