(gdb) bt
#0 0xb7730424 in __kernel_vsyscall ()
#1 0xb6860aff in __GI_raise (sig=sig@entry=6)
at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#2 0xb6864083 in __GI_abort () at abort.c:90
#3 0xb689da95 in __libc_message (do_abort=do_abort@entry=2,
fmt=fmt@entry=0xb69a10d0 "*** Error in `%s': %s: 0x%s ***\n")
at ../sysdeps/unix/sysv/linux/libc_fatal.c:199
#4 0xb68a87c2 in malloc_printerr (action=<optimized out>,
str=<optimized out>, ptr=0xb6da0463 <g_str_equal+35>) at malloc.c:4923
#5 0xb68a9510 in _int_free (av=0x8b000000, p=0xb6da045b <g_str_equal+27>,
have_lock=0) at malloc.c:3779
#6 0xb6db65d0 in g_free (mem=0xb6da0463 <g_str_equal+35>)
at /build/buildd/glib2.0-2.38.1/./glib/gmem.c:197
#7 0xb6d943eb in g_datalist_clear (datalist=datalist@entry=0x8613790)
at /build/buildd/glib2.0-2.38.1/./glib/gdataset.c:277
#8 0xb6e7f92e in g_object_finalize (object=0x8613788)
at /build/buildd/glib2.0-2.38.1/./gobject/gobject.c:1024
#9 0xb746335c in gtk_widget_finalize (object=0x8613788)
at /tmp/build/gtk+3/310/build-area/gtk+3.0-3.10.4/./gtk/gtkwidget.c:11515
#10 0xb6e80088 in g_object_unref (_object=0x8613788)
at /build/buildd/glib2.0-2.38.1/./gobject/gobject.c:3197
#11 0xb6e8207f in g_object_run_dispose (object=object@entry=0x8613788)
---Type <return> to continue, or q <return> to quit---
at /build/buildd/glib2.0-2.38.1/./gobject/gobject.c:1069
#12 0xb7463ff1 in gtk_widget_destroy (widget=0x8613788)
at /tmp/build/gtk+3/310/build-area/gtk+3.0-3.10.4/./gtk/gtkwidget.c:4268
#13 0xb7338f00 in gtk_menu_shell_tracker_remove_func (position=0,
user_data=0x84b36c0)
at /tmp/build/gtk+3/310/build-area/gtk+3.0-3.10.4/./gtk/gtkmenushell.c:2043
#14 0xb733bf15 in gtk_menu_tracker_remove_items (tracker=0xb5554f38,
tracker=0xb5554f38, n_items=1, offset=0, change_point=0xb555217c)
at /tmp/build/gtk+3/310/build-area/gtk+3.0-3.10.4/./gtk/gtkmenutracker.c:257
#15 gtk_menu_tracker_model_changed (model=0x8643920, position=0, removed=1,
added=0, user_data=0xb5554f38)
at /tmp/build/gtk+3/310/build-area/gtk+3.0-3.10.4/./gtk/gtkmenutracker.c:354
#16 0xb66043c6 in ffi_call_SYSV () at ../src/x86/sysv.S:65
#17 0xb660414b in ffi_call (cif=<optimized out>, cif@entry=0xbf956624,
fn=<optimized out>, rvalue=<optimized out>, avalue=<optimized out>,
avalue@entry=0xbf956550) at ../src/x86/ffi.c:411
#18 0xb6e7c129 in g_cclosure_marshal_generic (closure=0x862db70,
return_gvalue=0x0, n_param_values=4, param_values=0xbf956790,
invocation_hint=0xbf95673c, marshal_data=0x0)
---Type <return> to continue, or q <return> to quit---
at /build/buildd/glib2.0-2.38.1/./gobject/gclosure.c:1454
#19 0xb6e7b8ae in g_closure_invoke (closure=0x862db70,
return_value=return_value@entry=0x0, n_param_values=4,
param_values=param_values@entry=0xbf956790,
invocation_hint=invocation_hint@entry=0xbf95673c)
at /build/buildd/glib2.0-2.38.1/./gobject/gclosure.c:777
#20 0xb6e8ddf9 in signal_emit_unlocked_R (node=node@entry=0x8623680, detail=0,
instance=0x8643920, emission_return=emission_return@entry=0x0,
instance_and_params=0xbf956790)
at /build/buildd/glib2.0-2.38.1/./gobject/gsignal.c:3586
#21 0xb6e95753 in g_signal_emit_valist (instance=instance@entry=0x8643920,
signal_id=signal_id@entry=266, detail=detail@entry=0,
var_args=0xbf956908 "\030UU\265", var_args@entry=0xbf9568fc "")
at /build/buildd/glib2.0-2.38.1/./gobject/gsignal.c:3330
#22 0xb6e959e3 in g_signal_emit (instance=instance@entry=0x8643920,
signal_id=266, detail=detail@entry=0)
at /build/buildd/glib2.0-2.38.1/./gobject/gsignal.c:3386
#23 0xb6fe1175 in g_menu_model_items_changed (model=0x8643920,
position=position@entry=0, removed=removed@entry=1, added=added@entry=0)
at /build/buildd/glib2.0-2.38.1/./gio/gmenumodel.c:706
#24 0xb6fe4875 in g_dbus_menu_model_changed (added=0, removed=1, position=0,
items=0x0, proxy=<optimized out>)
at /build/buildd/glib2.0-2.38.1/./gio/gdbusmenumodel.c:826
---Type <return> to continue, or q <return> to quit---
#25 g_dbus_menu_group_changed (group=0x86439a0, menu_id=0, position=0,
removed=1, added=0xb554b838)
at /build/buildd/glib2.0-2.38.1/./gio/gdbusmenumodel.c:629
#26 0xb6fe4ff0 in g_dbus_menu_path_signal (connection=0x84a7810,
sender_name=0xb55054a8 ":1.17",
object_path=0xb553a760 "/com/canonical/indicator/datetime/desktop_greeter", interface_name=0xb554b428 "org.gtk.Menus", signal_name=0xb554a9f0 "Changed",
parameters=0xb554b778, user_data=0xb5554d38)
at /build/buildd/glib2.0-2.38.1/./gio/gdbusmenumodel.c:292
#27 0xb6ffaf26 in emit_signal_instance_in_idle_cb (data=data@entry=0xb554ea00)
at /build/buildd/glib2.0-2.38.1/./gio/gdbusconnection.c:3743
#28 0xb6dad5a0 in g_idle_dispatch (source=source@entry=0xb5520e00,
callback=0xb6ffae90 <emit_signal_instance_in_idle_cb>,
user_data=0xb554ea00) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:5250
#29 0xb6db083e in g_main_dispatch (context=0x847b598, context@entry=0x84a0a50)
at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3065
#30 g_main_context_dispatch (context=context@entry=0x847b598)
at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3641
#31 0xb6db0be8 in g_main_context_iterate (context=0x847b598,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3712
Debug stacktrace of the issue:
(gdb) bt sysdeps/ unix/sysv/ linux/raise. c:56 do_abort@ entry=2, fmt@entry= 0xb69a10d0 "*** Error in `%s': %s: 0x%s ***\n") unix/sysv/ linux/libc_ fatal.c: 199 buildd/ glib2.0- 2.38.1/ ./glib/ gmem.c: 197 datalist@ entry=0x8613790 ) buildd/ glib2.0- 2.38.1/ ./glib/ gdataset. c:277 buildd/ glib2.0- 2.38.1/ ./gobject/ gobject. c:1024 gtk+3/310/ build-area/ gtk+3.0- 3.10.4/ ./gtk/gtkwidget .c:11515 buildd/ glib2.0- 2.38.1/ ./gobject/ gobject. c:3197 run_dispose (object= object@ entry=0x8613788 ) buildd/ glib2.0- 2.38.1/ ./gobject/ gobject. c:1069 gtk+3/310/ build-area/ gtk+3.0- 3.10.4/ ./gtk/gtkwidget .c:4268 shell_tracker_ remove_ func (position=0, data=0x84b36c0) gtk+3/310/ build-area/ gtk+3.0- 3.10.4/ ./gtk/gtkmenush ell.c:2043 tracker_ remove_ items (tracker= 0xb5554f38, 0xb5554f38, n_items=1, offset=0, change_ point=0xb555217 c) gtk+3/310/ build-area/ gtk+3.0- 3.10.4/ ./gtk/gtkmenutr acker.c: 257 tracker_ model_changed (model=0x8643920, position=0, removed=1, 0xb5554f38) gtk+3/310/ build-area/ gtk+3.0- 3.10.4/ ./gtk/gtkmenutr acker.c: 354 x86/sysv. S:65 0xbf956624, entry=0xbf95655 0) at ../src/ x86/ffi. c:411 marshal_ generic (closure=0x862db70, gvalue= 0x0, n_param_values=4, param_values= 0xbf956790, hint=0xbf95673c , marshal_data=0x0) buildd/ glib2.0- 2.38.1/ ./gobject/ gclosure. c:1454 value=return_ value@entry= 0x0, n_param_values=4, values= param_values@ entry=0xbf95679 0, hint=invocation _hint@entry= 0xbf95673c) buildd/ glib2.0- 2.38.1/ ./gobject/ gclosure. c:777 emit_unlocked_ R (node=node@ entry=0x8623680 , detail=0, 0x8643920, emission_ return= emission_ return@ entry=0x0, and_params= 0xbf956790) buildd/ glib2.0- 2.38.1/ ./gobject/ gsignal. c:3586 emit_valist (instance= instance@ entry=0x8643920 , id=signal_ id@entry= 266, detail= detail@ entry=0, args=0xbf956908 "\030UU\265", var_args@ entry=0xbf9568f c "") buildd/ glib2.0- 2.38.1/ ./gobject/ gsignal. c:3330 instance@ entry=0x8643920 , detail@ entry=0) buildd/ glib2.0- 2.38.1/ ./gobject/ gsignal. c:3386 model_items_ changed (model=0x8643920, position@ entry=0, removed= removed@ entry=1, added=added@ entry=0) buildd/ glib2.0- 2.38.1/ ./gio/gmenumode l.c:706 menu_model_ changed (added=0, removed=1, position=0, buildd/ glib2.0- 2.38.1/ ./gio/gdbusmenu model.c: 826 menu_group_ changed (group=0x86439a0, menu_id=0, position=0, buildd/ glib2.0- 2.38.1/ ./gio/gdbusmenu model.c: 629 menu_path_ signal (connection= 0x84a7810, name=0xb55054a8 ":1.17", path=0xb553a760 "/com/canonical /indicator/ datetime/ desktop_ greeter" , interface_ name=0xb554b428 "org.gtk.Menus", signal_ name=0xb554a9f0 "Changed", 0xb554b778, user_data= 0xb5554d38) buildd/ glib2.0- 2.38.1/ ./gio/gdbusmenu model.c: 292 instance_ in_idle_ cb (data=data@ entry=0xb554ea0 0) buildd/ glib2.0- 2.38.1/ ./gio/gdbusconn ection. c:3743 source@ entry=0xb5520e0 0, 0xb6ffae90 <emit_signal_ instance_ in_idle_ cb>, data=0xb554ea00 ) at /build/ buildd/ glib2.0- 2.38.1/ ./glib/ gmain.c: 5250 entry=0x84a0a50 ) buildd/ glib2.0- 2.38.1/ ./glib/ gmain.c: 3065 context_ dispatch (context= context@ entry=0x847b598 ) buildd/ glib2.0- 2.38.1/ ./glib/ gmain.c: 3641 context_ iterate (context=0x847b598, block@entry= 1, dispatch= dispatch@ entry=1, self=<optimized out>) buildd/ glib2.0- 2.38.1/ ./glib/ gmain.c: 3712
#0 0xb7730424 in __kernel_vsyscall ()
#1 0xb6860aff in __GI_raise (sig=sig@entry=6)
at ../nptl/
#2 0xb6864083 in __GI_abort () at abort.c:90
#3 0xb689da95 in __libc_message (do_abort=
fmt=
at ../sysdeps/
#4 0xb68a87c2 in malloc_printerr (action=<optimized out>,
str=<optimized out>, ptr=0xb6da0463 <g_str_equal+35>) at malloc.c:4923
#5 0xb68a9510 in _int_free (av=0x8b000000, p=0xb6da045b <g_str_equal+27>,
have_lock=0) at malloc.c:3779
#6 0xb6db65d0 in g_free (mem=0xb6da0463 <g_str_equal+35>)
at /build/
#7 0xb6d943eb in g_datalist_clear (datalist=
at /build/
#8 0xb6e7f92e in g_object_finalize (object=0x8613788)
at /build/
#9 0xb746335c in gtk_widget_finalize (object=0x8613788)
at /tmp/build/
#10 0xb6e80088 in g_object_unref (_object=0x8613788)
at /build/
#11 0xb6e8207f in g_object_
---Type <return> to continue, or q <return> to quit---
at /build/
#12 0xb7463ff1 in gtk_widget_destroy (widget=0x8613788)
at /tmp/build/
#13 0xb7338f00 in gtk_menu_
user_
at /tmp/build/
#14 0xb733bf15 in gtk_menu_
tracker=
at /tmp/build/
#15 gtk_menu_
added=0, user_data=
at /tmp/build/
#16 0xb66043c6 in ffi_call_SYSV () at ../src/
#17 0xb660414b in ffi_call (cif=<optimized out>, cif@entry=
fn=<optimized out>, rvalue=<optimized out>, avalue=<optimized out>,
avalue@
#18 0xb6e7c129 in g_cclosure_
return_
invocation_
---Type <return> to continue, or q <return> to quit---
at /build/
#19 0xb6e7b8ae in g_closure_invoke (closure=0x862db70,
return_
param_
invocation_
at /build/
#20 0xb6e8ddf9 in signal_
instance=
instance_
at /build/
#21 0xb6e95753 in g_signal_
signal_
var_
at /build/
#22 0xb6e959e3 in g_signal_emit (instance=
signal_id=266, detail=
at /build/
#23 0xb6fe1175 in g_menu_
position=
at /build/
#24 0xb6fe4875 in g_dbus_
items=0x0, proxy=<optimized out>)
at /build/
---Type <return> to continue, or q <return> to quit---
#25 g_dbus_
removed=1, added=0xb554b838)
at /build/
#26 0xb6fe4ff0 in g_dbus_
sender_
object_
parameters=
at /build/
#27 0xb6ffaf26 in emit_signal_
at /build/
#28 0xb6dad5a0 in g_idle_dispatch (source=
callback=
user_
#29 0xb6db083e in g_main_dispatch (context=0x847b598, context@
at /build/
#30 g_main_
at /build/
#31 0xb6db0be8 in g_main_
block=
at /build/