gnome-control-center crashed with SIGSEGV in g_type_check_instance_is_a()

[Sasa Paporovic]

gnome-contol-center crashed on user account creation.

Steps to reproduce(not tested- just performed one time which causes the crasher):
1.Start system configuration -> user -> unlock -> create new account
2.Give in the full name field "angela"
3.See the automatically filling of the filed user name with "angela"
4.Press ok and have the crash.

Additional:

This was a standard account creation.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: gnome-control-center 1:3.6.3-0ubuntu24.1
ProcVersionSignature: Ubuntu 3.8.0-26.38-generic 3.8.13.2
Uname: Linux 3.8.0-26-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.9.2-0ubuntu8.2
Architecture: amd64
Date: Sun Jul 7 17:47:37 2013
ExecutablePath: /usr/bin/gnome-control-center
InstallationDate: Installed on 2013-01-13 (175 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
ProcCmdline: gnome-control-center --overview
SegvAnalysis:
 Segfault happened at: 0x7fa3472cc67c <g_type_check_instance_is_a+60>: testb $0x4,0x16(%rdi)
 PC (0x7fa3472cc67c) ok
 source "$0x4" ok
 destination "0x16(%rdi)" (0x2e666666c3010796) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: gnome-control-center
StacktraceTop:
 g_type_check_instance_is_a () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/control-center-1/panels/libuser-accounts.so
 g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
Title: gnome-control-center crashed with SIGSEGV in g_type_check_instance_is_a()
UpgradeStatus: Upgraded to raring on 2013-04-18 (79 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers

[Apport retracing service (apport)]

StacktraceTop:
 g_type_check_instance_is_a (type_instance=type_instance@entry=0x7fa347299a00 <g_source_callback_funcs>, iface_type=iface_type@entry=80) at /build/buildd/glib2.0-2.36.0/./gobject/gtype.c:3999
 g_object_unref (_object=0x7fa347299a00 <g_source_callback_funcs>) at /build/buildd/glib2.0-2.36.0/./gobject/gobject.c:2916
 select_created_user (object=<optimized out>, result=<optimized out>, user_data=<optimized out>) at um-user-panel.c:339
 g_simple_async_result_complete (simple=0x7fa349bf4710) at /build/buildd/glib2.0-2.36.0/./gio/gsimpleasyncresult.c:777
 complete_in_idle_cb (data=<optimized out>) at /build/buildd/glib2.0-2.36.0/./gio/gsimpleasyncresult.c:789

[Sebastien Bacher (seb128)]

The bug hasn't seen any activity in years and there has been no recent similar reports, the code also changed quite a lot since and it's likely the issue doesn't exist anymore. Closing, feel free to open a new report if you still get problems in recent Ubuntu versions