Comment 2 for bug 1376057

gdb output follows:

Starting program: /usr/bin/gnome-system-monitor
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffeba2c700 (LWP 6472)]
[New Thread 0x7fffea9ef700 (LWP 6473)]

** (gnome-system-monitor:6471): WARNING **: SELinux was found but is not enabled.

(gnome-system-monitor:6471): Gdk-ERROR **: The program 'gnome-system-monitor' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 2298 error_code 8 request_code 62 (core protocol) minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the GDK_SYNCHRONIZE environment
   variable to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

Program received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffff487fc13 in g_logv () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
(gdb) next
Single stepping until exit from function g_logv,
which has no line number information.
0x00007ffff487fd72 in g_log () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
(gdb) bt
#0 0x00007ffff487fd72 in g_log () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1 0x00007ffff66f5351 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#2 0x00007ffff66fdab1 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#3 0x00007ffff2f0354b in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#4 0x00007ffff2f005e7 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#5 0x00007ffff2f00695 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#6 0x00007ffff2f01578 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7 0x00007ffff2efd0cd in XSync () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#8 0x00007ffff5b8e0ef in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#9 0x00007ffff5b8ed90 in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#10 0x00007ffff5b8be6a in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#11 0x00007ffff5b5deaf in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#12 0x00007ffff5b29348 in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#13 0x00007ffff5b29bfa in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#14 0x00007ffff5b5ac48 in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#15 0x00007ffff5b5b09e in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#16 0x00007ffff5b5b116 in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#17 0x00007ffff5b19929 in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#18 0x00007ffff5b5e30c in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#19 0x00007ffff5b20f94 in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#20 0x00007ffff5b148e1 in cairo_mask ()
   from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#21 0x00007ffff5b14966 in cairo_mask_surface ()
---Type <return> to continue, or q <return> to quit---
   from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#22 0x00007ffff79b355f in ?? () from /usr/lib/x86_64-linux-gnu/libwnck-3.so.0
#23 0x00007ffff79b491e in ?? () from /usr/lib/x86_64-linux-gnu/libwnck-3.so.0
#24 0x00007ffff79aa5a4 in ?? () from /usr/lib/x86_64-linux-gnu/libwnck-3.so.0
#25 0x00007ffff79ab149 in ?? () from /usr/lib/x86_64-linux-gnu/libwnck-3.so.0
#26 0x00007ffff79ac395 in ?? () from /usr/lib/x86_64-linux-gnu/libwnck-3.so.0
#27 0x00007ffff799fbee in ?? () from /usr/lib/x86_64-linux-gnu/libwnck-3.so.0
#28 0x00007ffff79a02c4 in ?? () from /usr/lib/x86_64-linux-gnu/libwnck-3.so.0
#29 0x00007ffff4878ce5 in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007ffff4879048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007ffff487930a in g_main_loop_run ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007ffff6af5e45 in gtk_main ()
   from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#33 0x0000000000414018 in main ()
(gdb) step
Single stepping until exit from function g_log,
which has no line number information.