gnome-panel crashed with SIGSEGV in gtk_tree_view_column_setup_sort_column_id_callback()

[Miguel López]

Testing Ubuntu 12.04 Beta 1 on a VM (Virtualbox), I installed GNOME Shell (gnome-shell 3.2.2.1-0ubuntu1) from the Ubuntu Software Center. I then logged off and proceeded to test the Gnome Shell environment and, later, Gnome Classic.

I eventually returned to Unity 3D and walked away from my computer for a few minutes. When I returned I found the following crash message: gnome-panel crashed with SIGSEGV in g_closure_invoke()

When I chose to relaunch gnome-panel, both CLASSIC gnome panels (top and bottom) were launched instead of just the top one from Unity. The top panel shows the classic menus (Applications, Places) and the bottom one has the 'show desktop' and 'change workspace' buttons, and open application windows minimise to it as expected. I still have a fully functional Unity launcher.

gnome-panel shouldn't crash, and if it does, the proper gnome-panel should be relaunched i.e. the one that matches its "environment" (Unity, Gnome Shell, Gnome Classic, etc.)

Ubuntu precise beta 1
gnome-panel 1:3.3.90-0ubuntu1

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: gnome-panel 1:3.3.90-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.94-0ubuntu1
Architecture: amd64
Date: Sun Mar 4 01:01:18 2012
ExecutablePath: /usr/bin/gnome-panel
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
ProcCmdline: gnome-panel
ProcEnviron:
 PATH=(custom, no user)
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f6426b15c75: mov 0x78(%rax),%edx
 PC (0x7f6426b15c75) ok
 source "0x78(%rax)" (0xaaaaaaaaaaaaab22) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnome-panel
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.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
Title: gnome-panel crashed with SIGSEGV in g_closure_invoke()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 gtk_tree_view_column_setup_sort_column_id_callback (tree_column=0x2616d20) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtktreeviewcolumn.c:1267
 g_closure_add_finalize_notifier (closure=0x7f6426b18a3c, notify_data=0x1, notify_func=0x261d1f0) at /build/buildd/glib2.0-2.31.20/./gobject/gclosure.c:434
 g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x4c, hash_table=0x265a7e0) at /build/buildd/glib2.0-2.31.20/./glib/ghash.c:401
 g_hash_table_lookup (hash_table=0x265a7e0, key=0x4c) at /build/buildd/glib2.0-2.31.20/./glib/ghash.c:1074
 g_param_spec_gtype (name=0x27aa250 "", nick=0x6 <Address 0x6 out of bounds>, blurb=0x4 <Address 0x4 out of bounds>, is_a_type=15, flags=256) at /build/buildd/glib2.0-2.31.20/./gobject/gparamspecs.c:2342

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.