#0  0x0000000000000000 in ?? ()
No symbol table info available.
#1  0x00007fdd8bba4245 in g_cclosure_marshal_generic_va (closure=<error reading variable: Cannot access memory at address 0xffffffffffffff40>, return_value=<error reading variable: Cannot access memory at address 0xffffffffffffff20>, instance=<error reading variable: Cannot access memory at address 0xffffffffffffff68>, args_list=<optimized out>, marshal_data=<error reading variable: Cannot access memory at address 0xffffffffffffff18>, n_params=<error reading variable: Cannot access memory at address 0xffffffffffffff4c>, param_types=<error reading variable: Cannot access memory at address 0x10>) at /build/buildd/glib2.0-2.43.0~git20141021.4125415e/./gobject/gclosure.c:1552
        type = 18762976
        fundamental = <optimized out>
        rtype = <error reading variable rtype (Cannot access memory at address 0xffffffffffffff38)>
        rvalue = <error reading variable rvalue (Cannot access memory at address 0xffffffffffffff80)>
        n_args = <error reading variable n_args (Cannot access memory at address 0xffffffffffffff48)>
        atypes = <error reading variable atypes (Cannot access memory at address 0xffffffffffffff60)>
        args = <error reading variable args (Cannot access memory at address 0xffffffffffffff58)>
        storage = <error reading variable storage (Cannot access memory at address 0xffffffffffffff30)>
        i = <optimized out>
        cif = <error reading variable cif (Cannot access memory at address 0xffffffffffffffa0)>
        cc = <error reading variable cc (Cannot access memory at address 0xffffffffffffff40)>
        enum_tmpval = <optimized out>
        tmpval_used = <error reading variable tmpval_used (Cannot access memory at address 0xffffffffffffff7c)>
        args_copy = <error reading variable args_copy (Cannot access memory at address 0xffffffffffffff88)>
Backtrace stopped: previous frame inner to this frame (corrupt stack?)