(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x00007ffff151ea9d in gtk_window_get_position (window=0xb9b170,
    root_x=0x7fffffff60a0, root_y=0x7fffffff60a4)
    at /build/buildd/gtk+3.0-3.2.0/./gtk/gtkwindow.c:4460
#2  0x00007fffeadfdcdd in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#3  0x00007fffeb2e754e in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#4  0x00007fffeae17814 in webkitViewportAttributesRecompute ()
   from /usr/lib/libwebkitgtk-3.0.so.0
#5  0x00007fffeb1a6555 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#6  0x00007fffeb0249b4 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#7  0x00007fffeb1cbd50 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#8  0x00007fffeb1caec5 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#9  0x00007fffeb1cb026 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#10 0x00007fffeb1ebac4 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#11 0x00007fffeb1e854f in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#12 0x00007fffeb1eda7e in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#13 0x00007fffeb1edb2b in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#14 0x00007fffeb1cd8d9 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#15 0x00007fffeb1ce48a in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#16 0x00007fffeb028785 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#17 0x00007fffeb288301 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
---Type <return> to continue, or q <return> to quit---
#18 0x00007fffeae09a5d in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#19 0x00007fffeb28821d in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#20 0x00007fffeb2c8103 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#21 0x00007fffeb2b7e25 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#22 0x00007fffeb2c7972 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#23 0x00007fffeade785a in ?? () from /usr/lib/libwebkitgtk-3.0.so.0
#24 0x00007ffff328ab89 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#25 0x00007ffff329ac17 in g_simple_async_result_complete ()
   from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#26 0x00007fffe937d547 in ?? () from /usr/lib/libsoup-2.4.so.1
#27 0x00007ffff3a7f0a4 in g_closure_invoke ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff3a9102a in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007ffff3a9a6b1 in g_signal_emit_valist ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007ffff3a9a852 in g_signal_emit ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#31 0x00007fffe9383ba6 in ?? () from /usr/lib/libsoup-2.4.so.1
#32 0x00007fffe938492e in ?? () from /usr/lib/libsoup-2.4.so.1
#33 0x00007fffe9385308 in ?? () from /usr/lib/libsoup-2.4.so.1
---Type <return> to continue, or q <return> to quit---
#34 0x00007fffe9385674 in ?? () from /usr/lib/libsoup-2.4.so.1
#35 0x00007ffff37bea5d in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007ffff37bf258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007ffff37bf792 in g_main_loop_run ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007ffff13d6ecd in gtk_main ()
    at /build/buildd/gtk+3.0-3.2.0/./gtk/gtkmain.c:1367
#39 0x00007ffff2e2ca14 in ffi_call_unix64 ()
   from /usr/lib/x86_64-linux-gnu/libffi.so.6
#40 0x00007ffff2e2c435 in ffi_call ()
   from /usr/lib/x86_64-linux-gnu/libffi.so.6
#41 0x00007ffff3cca790 in ?? () from /usr/lib/libgirepository-1.0.so.1
#42 0x00007ffff3ccba4e in g_function_info_invoke ()
   from /usr/lib/libgirepository-1.0.so.1
#43 0x00007ffff3f04488 in ?? () from /usr/lib/python2.7/dist-packages/gi/_gi.so
#44 0x00000000004ba151 in PyEval_EvalFrameEx ()
#45 0x00000000004bd325 in PyEval_EvalCodeEx ()
#46 0x00000000004b6a5b in PyEval_EvalFrameEx ()
#47 0x00000000004bcd2d in PyEval_EvalCodeEx ()
#48 0x00000000004bd802 in PyEval_EvalCode ()
---Type <return> to continue, or q <return> to quit---
#49 0x00000000004dcc22 in ?? ()
#50 0x00000000004dd7e4 in PyRun_FileExFlags ()
#51 0x00000000004de2ee in PyRun_SimpleFileExFlags ()
#52 0x00000000004ee6dd in Py_Main ()
#53 0x00007ffff699e30d in __libc_start_main (main=0x41aa40 <main>, argc=4,
    ubp_av=0x7fffffff9ad8, init=<optimized out>, fini=<optimized out>,
    rtld_fini=<optimized out>, stack_end=0x7fffffff9ac8) at libc-start.c:226
#54 0x000000000041cb69 in _start ()