The issue has been reported on https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/1211887

The bug and duplicates don't have specific steps to reproduce, that's happening with software-center which is a python-webkit user. The webkit version is 1.10.2 but webkit2 updates seem to have similar issues

"#0  0x00007fe1520211f9 in g_logv (log_domain=0x7fe14fd95d46 "Gdk", log_level=G_LOG_LEVEL_ERROR, format=<optimized out>, args=args@entry=0x7fff7b1b15c8) at /build/buildd/glib2.0-2.37.5/./glib/gmessages.c:989
        domain = 0x0
        data = 0x0
        depth = 1
        log_func = 0x7fe152020990 <g_log_default_handler>
        domain_fatal_mask = <optimized out>
        masquerade_fatal = 0
        test_level = <optimized out>
        was_fatal = <optimized out>
        was_recursion = <optimized out>
        msg = 0x4514600 "The program 'software-center' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadDrawable (invalid Pixmap or Window parameter)'.\n  (Details: serial 3589 "...
        msg_alloc = 0x4514600 "The program 'software-center' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadDrawable (invalid Pixmap or Window parameter)'.\n  (Details: serial 3589 "...
        i = 2
#1  0x00007fe152021342 in g_log (log_domain=log_domain@entry=0x7fe14fd95d46 "Gdk", log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0x7fe14fda1a08 "%s") at /build/buildd/glib2.0-2.37.5/./glib/gmessages.c:1025
        args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fff7b1b16a0, reg_save_area = 0x7fff7b1b15e0}}
#2  0x00007fe14fd74970 in _gdk_x11_display_error_event (display=display@entry=0x24240c0, error=error@entry=0x7fff7b1b1760) at /build/buildd/gtk+3.0-3.8.2/./gdk/x11/gdkdisplay-x11.c:2556
        buf = "BadDrawable (invalid Pixmap or Window parameter)", '\000' <repeats 15 times>
        msg = <optimized out>
        display_x11 = 0x24240c0
        tmp_list = <optimized out>
        ignore = 0
#3  0x00007fe14fd7f321 in gdk_x_error (xdisplay=0x2416b00, error=0x7fff7b1b1760) at /build/buildd/gtk+3.0-3.8.2/./gdk/x11/gdkmain-x11.c:303
        error_display = 0x24240c0
        manager = <optimized out>
        displays = 0x0
        error = 0x7fff7b1b1760
        xdisplay = 0x2416b00
#4  0x00007fe14f829b9b in _XError (dpy=dpy@entry=0x2416b00, rep=rep@entry=0x43fc520) at ../../src/XlibInt.c:1581
        rtn_val = <optimized out>
        event = {type = 0, xany = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313}, xkey = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, root = 140605681420488, subwindow = 0, time = 45003616, x = 806187680, y = 32737, x_root = 678147232, y_root = 32737, state = 37841664, keycode = 0, same_screen = 1408724085}, xbutton = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, root = 140605681420488, subwindow = 0, time = 45003616, x = 806187680, y = 32737, x_root = 678147232, y_root = 32737, state = 37841664, button = 0, same_screen = 1408724085}, xmotion = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, root = 140605681420488, subwindow = 0, time = 45003616, x = 806187680, y = 32737, x_root = 678147232, y_root = 32737, state = 37841664, is_hint = 0 '\000', same_screen = 1408724085}, xcrossing = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, root = 140605681420488, subwindow = 0, time = 45003616, x = 806187680, y = 32737, x_root = 678147232, y_root = 32737, mode = 37841664, detail = 0, same_screen = 1408724085, focus = 32737, state = 5}, xfocus = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, mode = 1337051336, detail = 32737}, xexpose = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, x = 1337051336, y = 32737, width = 0, height = 0, count = 45003616}, xgraphicsexpose = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, drawable = 33570313, x = 1337051336, y = 32737, width = 0, height = 0, count = 45003616, major_code = 0, minor_code = 806187680}, xnoexpose = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, drawable = 33570313, major_code = 1337051336, minor_code = 32737}, xvisibility = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, state = 1337051336}, xcreatewindow = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, parent = 33570313, window = 140605681420488, x = 0, y = 0, width = 45003616, height = 0, border_width = 806187680, override_redirect = 32737}, xdestroywindow = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, event = 33570313, window = 140605681420488}, xunmap = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, event = 33570313, window = 140605681420488, from_configure = 0}, xmap = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, event = 33570313, window = 140605681420488, override_redirect = 0}, xmaprequest = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, parent = 33570313, window = 140605681420488}, xreparent = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, event = 33570313, window = 140605681420488, parent = 0, x = 45003616, y = 0, override_redirect = 806187680}, xconfigure = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, event = 33570313, window = 140605681420488, x = 0, y = 0, width = 45003616, height = 0, border_width = 806187680, above = 140605022516384, override_redirect = 37841664}, xgravity = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, event = 33570313, window = 140605681420488, x = 0, y = 0}, xresizerequest = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, width = 1337051336, height = 32737}, xconfigurerequest = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, parent = 33570313, window = 140605681420488, x = 0, y = 0, width = 45003616, height = 0, border_width = 806187680, above = 140605022516384, detail = 37841664, value_mask = 140605753093237}, xcirculate = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, event = 33570313, window = 140605681420488, place = 0}, xcirculaterequest = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, parent = 33570313, window = 140605681420488, place = 0}, xproperty = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, atom = 140605681420488, time = 0, state = 45003616}, xselectionclear = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, selection = 140605681420488, time = 0}, xselectionrequest = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, owner = 33570313, requestor = 140605681420488, selection = 0, target = 45003616, property = 140605150556832, time = 140605022516384}, xselection = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, requestor = 33570313, selection = 140605681420488, target = 0, property = 45003616, time = 140605150556832}, xcolormap = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, colormap = 140605681420488, new = 0, state = 0}, xclient = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, message_type = 140605681420488, format = 0, data = {b = "`\263\256\002\000\000\000\000\240r\r0\341\177\000\000\240\264k(", s = {-19616, 686, 0, 0, 29344, 12301, 32737, 0, -19296, 10347}, l = {45003616, 140605150556832, 140605022516384, 37841664, 140605753093237}}}, xmapping = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, request = 1337051336, first_keycode = 32737, count = 0}, xerror = {type = 0, display = 0x2416b00, resourceid = 62914834, serial = 3589, error_code = 9 '\t', request_code = 62 '>', minor_code = 0 '\000'}, xkeymap = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, window = 33570313, key_vector = "\310\310\261O\341\177\000\000\000\000\000\000\000\000\000\000`\263\256\002\000\000\000\000\240r\r0\341\177\000"}, xgeneric = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, extension = 33570313, evtype = 0}, xcookie = {type = 0, serial = 37841664, send_event = 62914834, display = 0xe05, extension = 33570313, evtype = 0, cookie = 1337051336, data = 0x0}, pad = {0, 37841664, 62914834, 3589, 33570313, 140605681420488, 0, 45003616, 140605150556832, 140605022516384, 37841664, 140605753093237, 5, 0, 32, 140605678078784, 71288096, 37841664, 71288096, 140605753120517, 0, -2, 0, 71288096}}
        async = <optimized out>
        next = <optimized out>
#5  0x00007fe14f826c07 in handle_error (dpy=0x2416b00, err=0x43fc520, in_XReply=<optimized out>) at ../../src/xcb_io.c:213
        ext = <optimized out>
        ret_code = 0
#6  0x00007fe14f826cb5 in handle_response (dpy=dpy@entry=0x2416b00, response=0x43fc520, in_XReply=in_XReply@entry=0) at ../../src/xcb_io.c:325
        async = <optimized out>
        next = <optimized out>
#7  0x00007fe14f82778d in _XReadEvents (dpy=dpy@entry=0x2416b00) at ../../src/xcb_io.c:426
        response = <optimized out>
        serial = 160
#8  0x00007fe14ef5bc31 in _cairo_xlib_shm_surface_flush (abstract_surface=0x42535e0, flags=<optimized out>) at /build/buildd/cairo-1.12.14/src/cairo-xlib-surface-shm.c:696
        shm = 0x42535e0
        display = 0x451c000
        dpy = 0x2416b00
        status = CAIRO_STATUS_SUCCESS
#9  0x00007fe14ef2aeaf in INT_cairo_surface_flush (surface=0x42535e0) at /build/buildd/cairo-1.12.14/src/cairo-surface.c:1510
        status = <optimized out>
#10 0x00007fe14ef57cfd in _cairo_xlib_surface_discard_shm (surface=surface@entry=0x59cb8a0) at /build/buildd/cairo-1.12.14/src/cairo-xlib-surface.c:369
No locals.
#11 0x00007fe14ef584c7 in _cairo_xlib_surface_finish (abstract_surface=0x59cb8a0) at /build/buildd/cairo-1.12.14/src/cairo-xlib-surface.c:401
        surface = 0x59cb8a0
        status = CAIRO_STATUS_SUCCESS
        display = 0x451c000
#12 0x00007fe14ef2a266 in _cairo_surface_finish (surface=0x59cb8a0) at /build/buildd/cairo-1.12.14/src/cairo-surface.c:1007
        status = <optimized out>
#13 0x00007fe14ef2aba2 in cairo_surface_destroy (surface=0x59cb8a0) at /build/buildd/cairo-1.12.14/src/cairo-surface.c:945
No locals.
#14 INT_cairo_surface_destroy (surface=0x59cb8a0) at /build/buildd/cairo-1.12.14/src/cairo-surface.c:924
No locals.
#15 0x00007fe14ef100d8 in INT_cairo_pattern_destroy (pattern=0x383a670) at /build/buildd/cairo-1.12.14/src/cairo-pattern.c:1131
        type = CAIRO_PATTERN_TYPE_SURFACE
        __PRETTY_FUNCTION__ = "cairo_pattern_destroy"
#16 0x00007fe14eeeda27 in _cairo_gstate_fini (gstate=0x2aeb030) at /build/buildd/cairo-1.12.14/src/cairo-gstate.c:225
No locals.
#17 0x00007fe14eeea5fd in _cairo_default_context_fini (cr=cr@entry=0x2aeb000) at /build/buildd/cairo-1.12.14/src/cairo-default-context.c:75
No locals.
#18 0x00007fe14eeea679 in _cairo_default_context_destroy (abstract_cr=0x2aeb000) at /build/buildd/cairo-1.12.14/src/cairo-default-context.c:93
        cr = 0x2aeb000
#19 0x00007fe12802be14 in ~RefPtr (this=<synthetic pointer>, __in_chrg=<optimized out>) at ../Source/WTF/wtf/RefPtr.h:56
No locals.
#20 WebKit::ChromeClient::widgetSizeChanged (this=0x5991d30, oldWidgetSize=..., newSize=...) at ../Source/WebKit/gtk/WebCoreSupport/ChromeClientGtk.cpp:467
        cr = {m_ptr = 0x2aeb000}
        backingStore = <optimized out>
#21 0x00007fe1280645f3 in resizeWebViewFromAllocation (webView=webView@entry=0x2aec830, allocation=allocation@entry=0x7fff7b1b2030, sizeChanged=<optimized out>) at ../Source/WebKit/gtk/webkit/webkitwebview.cpp:888
        page = 0x5a536f0
        oldSize = {m_width = 1, m_height = 200}
        frameView = 0x7fe130101900
        chromeClient = 0x5991d30
#22 0x00007fe128064709 in webkit_web_view_size_allocate (widget=0x2aec830, allocation=0x7fff7b1b2030) at ../Source/WebKit/gtk/webkit/webkitwebview.cpp:905
        oldAllocation = {x = 0, y = 0, width = 1, height = 200}
        sizeChanged = <optimized out>
        webView = 0x2aec830
#23 0x00007fe1522e5190 in g_cclosure_marshal_VOID__BOXEDv (closure=0x23f3070, return_value=<optimized out>, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, n_params=<optimized out>, param_types=0x2385510) at /build/buildd/glib2.0-2.37.5/./gobject/gmarshal.c:1160
        cc = 0x23f3070
        data1 = <optimized out>
        data2 = <optimized out>
        callback = <optimized out>
        arg0 = 0x7fff7b1b2030
        args_copy = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fff7b1b1fb0, reg_save_area = 0x7fff7b1b1ef0}}
#24 0x00007fe1522e24df in _g_closure_invoke_va (closure=0x23f3070, return_value=0x0, instance=0x2aec830, args=0x7fff7b1b1ed8, n_params=1, param_types=0x2385510) at /build/buildd/glib2.0-2.37.5/./gobject/gclosure.c:840
        marshal = 0x7fe1522e0ab0 <g_type_class_meta_marshalv>
        marshal_data = 0xd8
        in_marshal = 1
        real_closure = 0x23f3050
        __PRETTY_FUNCTION__ = "_g_closure_invoke_va"
#25 0x00007fe1522fc38c in g_signal_emit_valist (instance=0x2aec830, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff7b1b1ed8) at /build/buildd/glib2.0-2.37.5/./gobject/gsignal.c:3234
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        accumulator = 0x0
        emission = {next = 0x7fff7b1b2230, instance = 0x2aec830, ihint = {signal_id = 10, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 61251952}
        signal_id = 10
        instance_type = <optimized out>
        emission_return = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        rtype = 4
        static_scope = 0
        fastpath_handler = <optimized out>
        closure = 0x23f3070
        run_type = <optimized out>
        l = <optimized out>
        fastpath = <optimized out>
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        i = <optimized out>
        n_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
        __FUNCTION__ = "g_signal_emit_valist"
#26 0x00007fe1522fcc62 in g_signal_emit (instance=instance@entry=0x2aec830, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.37.5/./gobject/gsignal.c:3382
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff7b1b1fb0, reg_save_area = 0x7fff7b1b1ef0}}
#27 0x00007fe1502719aa in gtk_widget_size_allocate (widget=widget@entry=0x2aec830, allocation=allocation@entry=0x7fff7b1b20b0) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkwidget.c:5341
        priv = 0x2aec790
        real_allocation = {x = 0, y = 0, width = 835, height = 250}
        old_allocation = {x = 0, y = 0, width = 1, height = 200}
        adjusted_allocation = {x = 0, y = 0, width = 835, height = 250}
        alloc_needed = 1
        size_changed = 1
        position_changed = 0
        natural_width = 835
        natural_height = 250
        dummy = 0
        min_width = 835
        min_height = 250
        __PRETTY_FUNCTION__ = "gtk_widget_size_allocate"
#28 0x00007fe150180e68 in gtk_offscreen_window_size_allocate (widget=0x305edc0, allocation=0x7fff7b1b2590) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkoffscreenwindow.c:150
        child_alloc = {x = 0, y = 0, width = 835, height = 250}
        bin = 0x305edc0
        child = 0x2aec830
        border_width = <optimized out>
#29 0x00007fe1522e2338 in g_closure_invoke (closure=0x23f3070, return_value=0x0, n_param_values=2, param_values=0x7fff7b1b22a0, invocation_hint=0x7fff7b1b2240) at /build/buildd/glib2.0-2.37.5/./gobject/gclosure.c:777
        marshal = 0x7fe1522e0c30 <g_type_class_meta_marshal>
        marshal_data = 0xd8
        in_marshal = 0
        real_closure = 0x23f3050
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#30 0x00007fe1522f3f8f in signal_emit_unlocked_R (node=node@entry=0x2385530, detail=detail@entry=0, instance=instance@entry=0x305edc0, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff7b1b22a0) at /build/buildd/glib2.0-2.37.5/./gobject/gsignal.c:3512
        accumulator = 0x0
        emission = {next = 0x7fff7b1b2740, instance = 0x305edc0, ihint = {signal_id = 10, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 46838800}
        handler_list = <optimized out>
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 10
        max_sequential_handler_number = 3634
        return_value_altered = <optimized out>
#31 0x00007fe1522fc98a in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff7b1b2438) at /build/buildd/glib2.0-2.37.5/./gobject/gsignal.c:3326
        instance_and_params = 0x7fff7b1b22a0
        signal_return_type = <optimized out>
        param_values = 0x7fff7b1b22b8
        i = <optimized out>
        n_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
        __FUNCTION__ = "g_signal_emit_valist"
#32 0x00007fe1522fcc62 in g_signal_emit (instance=instance@entry=0x305edc0, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.37.5/./gobject/gsignal.c:3382
        var_args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fff7b1b2510, reg_save_area = 0x7fff7b1b2450}}
#33 0x00007fe1502719aa in gtk_widget_size_allocate (widget=widget@entry=0x305edc0, allocation=allocation@entry=0x7fff7b1b2610) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkwidget.c:5341
        priv = 0x305ed20
        real_allocation = {x = 0, y = 0, width = 835, height = 250}
        old_allocation = {x = 0, y = 0, width = 1, height = 200}
        adjusted_allocation = {x = 0, y = 0, width = 835, height = 250}
        alloc_needed = 1
        size_changed = 1
        position_changed = 0
        natural_width = 835
        natural_height = 250
        dummy = 0
        min_width = 835
        min_height = 250
        __PRETTY_FUNCTION__ = "gtk_widget_size_allocate"
#34 0x00007fe150180da0 in gtk_offscreen_window_resize (widget=0x305edc0) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkoffscreenwindow.c:206
        allocation = {x = 0, y = 0, width = 835, height = 250}
        requisition = {width = 835, height = 250}
#35 0x00007fe1522e2567 in _g_closure_invoke_va (closure=0x23f71b0, return_value=0x0, instance=0x305edc0, args=0x7fff7b1b2808, n_params=0, param_types=0x0) at /build/buildd/glib2.0-2.37.5/./gobject/gclosure.c:840
        marshal = 0x7fe1522e0ab0 <g_type_class_meta_marshalv>
        marshal_data = 0x348
        in_marshal = 0
        real_closure = 0x23f7190
        __PRETTY_FUNCTION__ = "_g_closure_invoke_va"
#36 0x00007fe1522fc38c in g_signal_emit_valist (instance=0x305edc0, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff7b1b2808) at /build/buildd/glib2.0-2.37.5/./gobject/gsignal.c:3234
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        accumulator = 0x0
        emission = {next = 0x7fff7b1b2a10, instance = 0x305edc0, ihint = {signal_id = 74, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 46838800}
        signal_id = 74
        instance_type = <optimized out>
        emission_return = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        rtype = 4
        static_scope = 0
        fastpath_handler = <optimized out>
        closure = 0x23f71b0
        run_type = <optimized out>
        l = <optimized out>
        fastpath = <optimized out>
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        i = <optimized out>
        n_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
        __FUNCTION__ = "g_signal_emit_valist"
#37 0x00007fe1522fcc62 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.37.5/./gobject/gsignal.c:3382
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff7b1b28e0, reg_save_area = 0x7fff7b1b2820}}
#38 0x00007fe1500bb96c in gtk_container_idle_sizer (clock=0x2ee89d0, container=0x305edc0) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkcontainer.c:1671
No locals.
#39 0x00007fe1522e2567 in _g_closure_invoke_va (closure=0x41a3260, return_value=0x0, instance=0x2ee89d0, args=0x7fff7b1b2b30, n_params=0, param_types=0x0) at /build/buildd/glib2.0-2.37.5/./gobject/gclosure.c:840
        marshal = 0x7fe1522e40c0 <g_cclosure_marshal_VOID__VOIDv>
        marshal_data = 0x0
        in_marshal = 0
        real_closure = 0x41a3240
        __PRETTY_FUNCTION__ = "_g_closure_invoke_va"
#40 0x00007fe1522fc38c in g_signal_emit_valist (instance=instance@entry=0x2ee89d0, signal_id=signal_id@entry=139, detail=detail@entry=0, var_args=var_args@entry=0x7fff7b1b2b30) at /build/buildd/glib2.0-2.37.5/./gobject/gsignal.c:3234
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x2ee89d0, ihint = {signal_id = 139, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 37986160}
        signal_id = 139
        instance_type = <optimized out>
        emission_return = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        rtype = 4
        static_scope = 0
        fastpath_handler = <optimized out>
        closure = 0x41a3260
        run_type = <optimized out>
        l = <optimized out>
        fastpath = <optimized out>
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        i = <optimized out>
        n_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
        __FUNCTION__ = "g_signal_emit_valist"
#41 0x00007fe1522fd192 in g_signal_emit_by_name (instance=instance@entry=0x2ee89d0, detailed_signal=detailed_signal@entry=0x7fe14fd9a4ed "layout") at /build/buildd/glib2.0-2.37.5/./gobject/gsignal.c:3422
        var_args = {{gp_offset = 16, fp_offset = 48, overflow_arg_area = 0x7fff7b1b2c70, reg_save_area = 0x7fff7b1b2b80}}
        detail = 0
        signal_id = 139
        itype = 37986160
        __PRETTY_FUNCTION__ = "g_signal_emit_by_name"
#42 0x00007fe14fd58a27 in gdk_frame_clock_paint_idle (data=0x2ee89d0) at /build/buildd/gtk+3.0-3.8.2/./gdk/gdkframeclockidle.c:400
        clock = 0x2ee89d0
        clock_idle = 0x2ee89d0
        priv = 0x2ee88f0
        skip_to_resume_events = <optimized out>
        timings = 0x5afe6a0
#43 0x00007fe14fd4bc48 in gdk_threads_dispatch (data=0x253ada0, data@entry=<error reading variable: value has been optimized out>) at /build/buildd/gtk+3.0-3.8.2/./gdk/gdk.c:788
        dispatch = 0x253ada0
        ret = 0
#44 0x00007fe15201acc3 in g_timeout_dispatch (source=source@entry=0x413e290, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:4450
        timeout_source = 0x413e290
        again = <optimized out>
#45 0x00007fe15201a166 in g_main_dispatch (context=0x2412560) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3065
        dispatch = 0x7fe15201acb0 <g_timeout_dispatch>
        was_in_call = 0
        user_data = 0x253ada0
        callback = 0x7fe14fd4bc20 <gdk_threads_dispatch>
        cb_funcs = 0x7fe1522d0940 <g_source_callback_funcs>
        cb_data = 0x3c15d70
        need_destroy = <optimized out>
        current_source_link = {data = 0x413e290, next = 0x0}
        source = 0x413e290
        current = 0x2407c10
        i = 0
#46 g_main_context_dispatch (context=context@entry=0x2412560) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3641
No locals.
#47 0x00007fe15201a4b8 in g_main_context_iterate (context=0x2412560, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3712
        max_priority = 120
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 7
        fds = 0x3cd9b60
#48 0x00007fe15201a8ba in g_main_loop_run (loop=0x3627360) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3906
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#49 0x00007fe15014e365 in gtk_main () at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkmain.c:1156
        loop = 0x3627360
#50 0x00007fe151659c18 in ffi_call_unix64 () at ../src/x86/unix64.S:76
No locals.
#51 0x00007fe151659580 in ffi_call (cif=cif@entry=0x7fff7b1b2fd0, fn=fn@entry=0x7fe15014e2e0 <gtk_main>, rvalue=rvalue@entry=0x7fff7b1b2fb0, avalue=avalue@entry=0x7fff7b1b2f10) at ../src/x86/ffi64.c:522
        classes = {96095472, X86_64_NO_CLASS, 2065379280, 32767}
        stack = 0x7fff7b1b2d60 ""
        argp = 0x7fff7b1b2e10 ""
        arg_types = 0x7fff7b1b2f20
        gprcount = 0
        ssecount = <optimized out>
        ngpr = 0
        nsse = 0
        i = <optimized out>
        avn = <optimized out>
        ret_in_memory = <optimized out>
        reg_args = 0x7fff7b1b2d60
#52 0x00007fe15252ed19 in g_callable_info_invoke (info=info@entry=0x5ba4cf0, function=0x7fe15014e2e0 <gtk_main>, in_args=in_args@entry=0x0, n_in_args=n_in_args@entry=0, out_args=out_args@entry=0x0, n_out_args=n_out_args@entry=0, return_value=return_value@entry=0x7fff7b1b31a8, is_method=is_method@entry=0, throws=0, error=error@entry=0x7fff7b1b3158) at girepository/gicallableinfo.c:680
        cif = {abi = FFI_UNIX64, nargs = 0, arg_types = 0x7fff7b1b2f20, rtype = 0x7fe15165a000 <ffi_type_void>, bytes = 0, flags = 0}
        rtype = 0x7fe15165a000 <ffi_type_void>
        atypes = 0x7fff7b1b2f20
        tinfo = <optimized out>
        rinfo = 0x5a1e400
        rtag = GI_TYPE_TAG_VOID
        ainfo = <optimized out>
        n_args = 0
        n_invoke_args = 0
        in_pos = 0
        out_pos = <optimized out>
        i = <optimized out>
        args = 0x7fff7b1b2f10
        success = 0
        local_error = 0x0
        error_address = 0x7fff7b1b2fc0
        ffi_return_value = {v_boolean = 93772276, v_int8 = -12 '\364', v_uint8 = 244 '\364', v_int16 = -9740, v_uint16 = 55796, v_int32 = 93772276, v_uint32 = 93772276, v_int64 = 93772276, v_uint64 = 93772276, v_float = 1.41859955e-35, v_double = 4.6329660103943623e-316, v_short = -9740, v_ushort = 55796, v_int = 93772276, v_uint = 93772276, v_long = 93772276, v_ulong = 93772276, v_ssize = 93772276, v_size = 93772276, v_string = 0x596d9f4 "3", v_pointer = 0x596d9f4}
        return_value_p = 0x7fff7b1b2fb0
        __PRETTY_FUNCTION__ = "g_callable_info_invoke"
#53 0x00007fe152530057 in g_function_info_invoke (info=info@entry=0x5ba4cf0, in_args=0x0, n_in_args=0, out_args=0x0, n_out_args=0, return_value=return_value@entry=0x7fff7b1b31a8, error=error@entry=0x7fff7b1b3158) at girepository/gifunctioninfo.c:274
        symbol = <optimized out>
        func = 0x7fe15014e2e0 <gtk_main>
        is_method = 0
        throws = <optimized out>
#54 0x00007fe15276c027 in _invoke_callable (function_ptr=0x0, callable_info=0x5ba4cf0, cache=0x632c1e0, state=0x7fff7b1b3160) at ../../gi/pygi-invoke.c:64
        _save = 0x21320a0
        error = 0x0
        retval = <optimized out>
#55 pygi_callable_info_invoke (info=<optimized out>, py_args=<optimized out>, kwargs=<optimized out>, cache=<optimized out>, function_ptr=<optimized out>, user_data=<optimized out>) at ../../gi/pygi-invoke.c:652
        state = {py_in_args = 0x7fe15412d050, n_py_in_args = 0, current_arg = 0, implementor_gtype = 0, args = 0x0, in_args = 0x0, args_data = 0x0, out_args = 0x0, out_values = 0x0, return_arg = {v_boolean = 0, v_int8 = 0 '\000', v_uint8 = 0 '\000', v_int16 = 0, v_uint16 = 0, v_int32 = 0, v_uint32 = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_short = 0, v_ushort = 0, v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_ssize = 0, v_size = 0, v_string = 0x0, v_pointer = 0x0}, error = 0x0, failed = 0, user_data = 0x0}
        ret = 0x0
#56 0x00000000004fe720 in PyObject_Call (kw=0x0, arg=0x7fe15412d050, func=0x5972420) at ../Objects/abstract.c:2529
        result = <optimized out>
        call = 0x7fe152762400 <_function_info_call>
#57 do_call (nk=<optimized out>, na=<optimized out>, pp_stack=0x7fff7b1b3300, func=0x5972420) at ../Python/ceval.c:4239
        callargs = <optimized out>
        kwdict = 0x0
        result = 0x0
#58 call_function (oparg=<optimized out>, pp_stack=0x7fff7b1b3300) at ../Python/ceval.c:4044
        func = 0x5972420
        w = <optimized out>
        na = <optimized out>
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x2219748
        x = <optimized out>
#59 PyEval_EvalFrameEx (f=f@entry=0x22195d0, throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
        sp = 0x2219750
        stack_pointer = <optimized out>
        next_instr = 0x221cb76 "\001n"
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = <optimized out>
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x2219748
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
        enter = 0x7fe154143de0
        exit = 0x7fe154143e10
#60 0x000000000056c414 in PyEval_EvalCodeEx (co=0x7fe1540b3b30, globals=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=<optimized out>, kws=<optimized out>, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3253
        f = <optimized out>
        retval = 0x0
        fastlocals = <optimized out>
        freevars = <optimized out>
        tstate = <optimized out>
        x = <optimized out>
        u = <optimized out>
#61 0x00000000005ba3b2 in PyEval_EvalCode (co=<optimized out>, globals=<optimized out>, locals=<optimized out>) at ../Python/ceval.c:667
No locals.
#62 0x00000000005abe1b in run_mod.42564 (mod=<optimized out>, filename=<optimized out>, globals=0x216f690, locals=0x216f690, flags=<optimized out>, arena=<optimized out>) at ../Python/pythonrun.c:1365
        co = 0x7fe1540b3b30
        v = <optimized out>
#63 0x000000000045270b in PyRun_FileExFlags (fp=fp@entry=0x21ff230, filename=filename@entry=0x7fff7b1b48ca "/usr/bin/software-center", start=start@entry=257, globals=globals@entry=0x216f690, locals=locals@entry=0x216f690, closeit=closeit@entry=1, flags=flags@entry=0x7fff7b1b3540) at ../Python/pythonrun.c:1351
        ret = <optimized out>
        mod = 0x2215188
        arena = 0x21aa740
#64 0x0000000000452f05 in PyRun_SimpleFileExFlags (fp=fp@entry=0x21ff230, filename=<optimized out>, filename@entry=0x7fff7b1b48ca "/usr/bin/software-center", closeit=closeit@entry=1, flags=flags@entry=0x7fff7b1b3540) at ../Python/pythonrun.c:943
        m = 0x7fe154161cc8
        d = 0x216f690
        v = <optimized out>
        ext = 0x7fff7b1b48de "nter"
        set_file_name = 1
        len = <optimized out>
        ret = -1
#65 0x0000000000453001 in PyRun_AnyFileExFlags (fp=fp@entry=0x21ff230, filename=filename@entry=0x7fff7b1b48ca "/usr/bin/software-center", closeit=closeit@entry=1, flags=flags@entry=0x7fff7b1b3540) at ../Python/pythonrun.c:747
No locals.
#66 0x0000000000453b6a in Py_Main (argc=<optimized out>, argv=0x7fff7b1b36f8) at ../Modules/main.c:640
        c = <optimized out>
        sts = <optimized out>
        command = 0x0
        filename = 0x7fff7b1b48ca "/usr/bin/software-center"
        module = 0x0
        fp = 0x21ff230
        p = <optimized out>
        unbuffered = <optimized out>
        skipfirstline = <optimized out>
        stdin_is_interactive = 0
        help = <optimized out>
        version = <optimized out>
        saw_unbuffered_flag = <optimized out>
        cf = {cf_flags = 0}
#67 0x00007fe153081de5 in __libc_start_main (main=0x453c28 <main>, argc=2, ubp_av=0x7fff7b1b36f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff7b1b36e8) at libc-start.c:260
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 2326239894385323567, 5744344, 140735258769136, 0, 0, -2326530399755440593, -2338827482476057041}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x5bb4e0 <__libc_csu_init>, 0x7fff7b1b36f8}, data = {prev = 0x0, cleanup = 0x0, canceltype = 6010080}}}
        not_first_call = <optimized out>
#68 0x000000000057a701 in _start ()
No symbol table info available."