Public bug reported:
Gnome-panel will crash with a sigsev fairly regularly for me - usually
it is when launching a new window or switching desktops, but it happens
within about 20 min of normal use.
In an xterm or console window I can re-launch it from the command line.
This means that I have been able to collect core dumps, retrieve the
stacktrace from gdb, and collect the system call log by launching it
with strace -o.
I could build it from source with debug symbols, or try other
experiments if that could help with this.
I have pasted the last bits of an strace log and core dump stack below.
rgr@rgr-thinkpad-fourkitchens:~$ gdb /usr/bin/gnome-panel
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type show copying
and show warranty for details.
This GDB was configured as x86_64-linux-gnu.
For bug reporting instructions, please see:
http://bugs.launchpad.net/gdb-linaro/...
Reading symbols from /usr/bin/gnome-panel...(no debugging symbols found)...done.
(gdb) core Projects/gnome-panel/core.
core.1 core.2 core.3 core.4
(gdb) core Projects/gnome-panel/core.4
[New LWP 29771]
[New LWP 30722]
[New LWP 29772]
[New LWP 29774]
[New LWP 30723]
warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
Using host libthread_db library /lib/x86_64-linux-gnu/libthread_db.so.1.
Core was generated by `gnome-panel'.
Program terminated with signal 8, Arithmetic exception.
#0 0x7f93b2060a70 in ?? () from /usr/lib/libwnck-3.so.0
(gdb) info stack
#0 0x7f93b2060a70 in ?? () from /usr/lib/libwnck-3.so.0
#1 0x7f93c1995c1b in g_closure_invoke ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#2 0x7f93c19a7179 in ?? () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#3 0x7f93c19af099 in g_signal_emit_valist ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4 0x7f93c19af242 in g_signal_emit ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5 0x7f93c33f2219 in gtk_widget_size_allocate ()
from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#6 0x7f93c325baa5 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#7 0x7f93b228ad1d in ?? () from /usr/lib/libpanel-applet-4.so.0
#8 0x7f93c1995c1b in g_closure_invoke ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9 0x7f93c19a7179 in ?? () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x7f93c19af099 in g_signal_emit_valist ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x7f93c19af242 in g_signal_emit ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x7f93c33f2219 in gtk_widget_size_allocate ()
from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#13 0x7f93c341f86d in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#14 0x7f93c1998fcd in g_cclosure_marshal_VOID__BOXEDv ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x7f93c1995e3c in ?? () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#16 0x7f93c19ae741 in g_signal_emit_valist ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x7f93c19af242 in g_signal_emit ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x7f93c33f2219 in gtk_widget_size_allocate ()
from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#19 0x7f93c3421aab in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#20 0x7f93c1998fcd in g_cclosure_marshal_VOID__BOXEDv ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x7f93c1995e3c in ?? () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x7f93c19ae741 in g_signal_emit_valist ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x7f93c19af242 in g_signal_emit ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x7f93c33f2219 in gtk_widget_size_allocate ()
from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#25 0x7f93c325baa5 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#26 0x7f93c1998fcd in g_cclosure_marshal_VOID__BOXEDv ()
---Type return to continue, or q return to quit---q
from /usr/lib/x86_64-linux-gnu/Quit
(gdb) info stack
#0 0x7f93b2060a70 in ?? () from /usr/lib/libwnck-3.so.0
#1 0x7f93c1995c1b in g_closure_invoke ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#2 0x7f93c19a7179 in ?? () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#3 0x7f93c19af099 in g_signal_emit_valist ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4 0x7f93c19af242 in g_signal_emit ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5 0x7f93c33f2219 in gtk_widget_size_allocate ()
from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#6 0x7f93c325baa5 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#7
