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

[lulo]

To reproduce:
1) Enter System Settings
2) Enter the Displays panel
3) Click on All Settings button to go back
4) Plug in an external monitor

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: gnome-control-center 1:3.1.91-0ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CrashCounter: 1
Date: Tue Sep 6 23:16:59 2011
ExecutablePath: /usr/bin/gnome-control-center
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64+mac (20110901)
ProcCmdline: gnome-control-center display
SegvAnalysis:
 Segfault happened at: 0x7f68667776cc: mov (%rax),%rdi
 PC (0x7f68667776cc) ok
 source "(%rax)" (0xaaaaaaaaaaaaaaaa) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnome-control-center
StacktraceTop:
 ?? () from /usr/lib/control-center-1/panels/libdisplay.so
 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: gnome-control-center crashed with SIGSEGV in g_closure_invoke()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout fuse lpadmin netdev plugdev sambashare scanner video

[Apport retracing service (apport)]

StacktraceTop:
 on_screen_changed (scr=0x7f6844002f20, data=0x7f687988d100) at cc-display-panel.c:247
 g_closure_invoke (closure=0x7f68796eddd0, return_value=0x0, n_param_values=1, param_values=0x7f68799e8f60, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.29.18/./gobject/gclosure.c:774
 signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x7f6844002f20, emission_return=0x0, instance_and_params=0x7f68799e8f60) at /build/buildd/glib2.0-2.29.18/./gobject/gsignal.c:3272
 g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=0x7fffb5d92698) at /build/buildd/glib2.0-2.29.18/./gobject/gsignal.c:3003
 g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.29.18/./gobject/gsignal.c:3060

[Pedro Villavicencio (pedro)]

Is this still an issue with 3.1.92 ? There's no reports with same backtrace on that particular version. May you please test and comment back or even add a test case so we can test it? Thanks in advance.

[Chris Johnston (cjohnston)]

Pedro, I just got the issue today. Bug #859247

[Pedro Villavicencio (pedro)]

any chance to get a backtrace with the new package? apport doesnt seems to be picking those and its just marking it as dup instead.

[Pedro Villavicencio (pedro)]

any news about this?

[Michael Terry (mterry)]

I think I see why this is happening. A callback is being used after the object that registered it dies.

[Launchpad Janitor (janitor)]

This bug was fixed in the package gnome-control-center - 1:3.3.90-0ubuntu4

---------------
gnome-control-center (1:3.3.90-0ubuntu4) precise; urgency=low

  * debian/patches/99_fix_display_crash.patch:
    - Disconnect signal when display panel is closed so we don't crash
      later. LP: #843274
 -- Michael Terry <email address hidden> Sat, 25 Feb 2012 09:36:05 -0500

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu laptop testing tracker.

A list of all reports related to this bug can be found here:
http://laptop.qa.ubuntu.com/qatracker/reports/bugs/843274