[New LWP 11171]
[New LWP 11176]
[New LWP 11175]
[New LWP 11183]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `gnome-flashback'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __strcmp_ssse3 () at ../sysdeps/x86_64/multiarch/../strcmp.S:173
173	../sysdeps/x86_64/multiarch/../strcmp.S: No such file or directory.
[Current thread is 1 (Thread 0x7f759dd4da80 (LWP 11171))]
(gdb) bt full
#0  __strcmp_ssse3 () at ../sysdeps/x86_64/multiarch/../strcmp.S:173
No locals.
#1  0x00007f7599513569 in g_str_equal (v1=v1@entry=0x0, v2=<optimised out>) at ../../../../glib/ghash.c:1864
        string1 = 0x0
        string2 = <optimised out>
#2  0x0000563c7a80001f in handle_ungrab_accelerator (dbus_shell=0x563c7c7d31d0, invocation=0x7f7580065e40, action=3, 
    user_data=<optimised out>) at flashback-shell.c:380
        shell = <optimised out>
        sender = 0x0
        success = 0
#3  0x00007f7593c9ddae in ffi_call_unix64 () at ../src/x86/unix64.S:76
No locals.
#4  0x00007f7593c9d71f in ffi_call (cif=cif@entry=0x7ffd44bdb7d0, fn=fn@entry=0x563c7a7fffd0 <handle_ungrab_accelerator>, 
    rvalue=<optimised out>, avalue=avalue@entry=0x7ffd44bdb6e0) at ../src/x86/ffi64.c:525
        classes = {X86_64_INTEGER_CLASS, 1653, 1153284048, 32765}
        stack = <optimised out>
        argp = <optimised out>
        arg_types = <optimised out>
        gprcount = 4
        ssecount = <optimised out>
        ngpr = 1
        nsse = 0
        i = <optimised out>
---Type <return> to continue, or q <return> to quit---
        avn = <optimised out>
        ret_in_memory = <optimised out>
        reg_args = <optimised out>
#5  0x00007f7599800901 in g_cclosure_marshal_generic (closure=0x563c7c7d2fc0, return_gvalue=0x7ffd44bdb9a0, n_param_values=<optimised out>, 
    param_values=<optimised out>, invocation_hint=<optimised out>, marshal_data=<optimised out>) at ../../../../gobject/gclosure.c:1490
        rtype = <optimised out>
        rvalue = 0x7ffd44bdb740
        n_args = 4
        atypes = <optimised out>
        args = <optimised out>
        i = <optimised out>
        cif = {abi = FFI_UNIX64, nargs = 4, arg_types = 0x7ffd44bdb710, rtype = 0x7f7593c9e0e0 <ffi_type_sint32>, bytes = 0, flags = 10}
        cc = 0x563c7c7d2fc0
        enum_tmpval = <optimised out>
        tmpval_used = 0
#6  0x00007f759980010d in g_closure_invoke (closure=0x563c7c7d2fc0, return_value=0x7ffd44bdb9a0, n_param_values=3, 
    param_values=0x563c7c43f7e0, invocation_hint=0x7ffd44bdb980) at ../../../../gobject/gclosure.c:804
        marshal = 0x7f7599800700 <g_cclosure_marshal_generic>
        marshal_data = 0x0
        in_marshal = 0
        real_closure = 0x563c7c7d2fa0
        __func__ = "g_closure_invoke"
#7  0x00007f759981305e in signal_emit_unlocked_R (node=node@entry=0x563c7c7e8470, detail=detail@entry=0, 
    instance=instance@entry=0x563c7c7d31d0, emission_return=emission_return@entry=0x7ffd44bdbad0, 
    instance_and_params=instance_and_params@entry=0x563c7c43f7e0) at ../../../../gobject/gsignal.c:3635
        tmp = <optimised out>
        handler = 0x563c7c7991c0
        accumulator = 0x563c7c7aab40
        emission = {next = 0x0, instance = 0x563c7c7d31d0, ihint = {signal_id = 419, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, 
          state = EMISSION_RUN, chain_type = 4}
        class_closure = <optimised out>
        hlist = <optimised out>
        handler_list = 0x563c7c7991c0
        return_accu = 0x7ffd44bdb9a0
        accu = {g_type = 20, 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 = 419
        max_sequential_handler_number = 6159
        return_value_altered = 0
#8  0x00007f759981ac80 in g_signal_emitv (instance_and_params=instance_and_params@entry=0x563c7c43f7e0, signal_id=signal_id@entry=419, 
    detail=detail@entry=0, return_value=return_value@entry=0x7ffd44bdbad0) at ../../../../gobject/gsignal.c:3129
        instance = 0x563c7c7d31d0
        node = <optimised out>
        __func__ = "g_signal_emitv"
#9  0x0000563c7a803299 in _flashback_dbus_shell_skeleton_handle_method_call (connection=<optimised out>, sender=<optimised out>, 
---Type <return> to continue, or q <return> to quit---
    object_path=<optimised out>, interface_name=0x7f7580037610 "org.gnome.Shell", method_name=0x7f758006d1c0 "UngrabAccelerator", 
    parameters=<optimised out>, invocation=0x7f7580065e40, user_data=0x563c7c7d31d0) at flashback-dbus-shell.c:3014
        skeleton = <optimised out>
        info = 0x563c7aa529e0 <_flashback_dbus_shell_method_info_ungrab_accelerator>
        iter = {x = {140142635563664, 1, 1, 0, 94817782417888, 140143063311767, 0, 3579507750, 94817787036288, 94817787036288, 
            94817782568928, 1, 140142635849488, 140143063354633, 94817781798848, 32013222944604416}}
        child = 0x0
        paramv = 0x563c7c43f7e0
        num_params = <optimised out>
        num_extra = <optimised out>
        n = <optimised out>
        signal_id = 419
        return_value = {g_type = 20, 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}}}
        __func__ = "_flashback_dbus_shell_skeleton_handle_method_call"
#10 0x00007f7599b1f8f7 in g_dbus_interface_method_dispatch_helper (interface=<optimised out>, 
    method_call_func=0x563c7a8030e0 <_flashback_dbus_shell_skeleton_handle_method_call>, invocation=0x7f7580065e40)
    at ../../../../gio/gdbusinterfaceskeleton.c:609
        has_handlers = <optimised out>
        has_default_class_handler = <optimised out>
        emit_authorized_signal = <optimised out>
        run_in_thread = <optimised out>
        flags = <optimised out>
        object = 0x0
        __func__ = "g_dbus_interface_method_dispatch_helper"
#11 0x00007f7599b078fc in call_in_idle_cb (user_data=0x7f7580065e40) at ../../../../gio/gdbusconnection.c:4851
        invocation = 0x7f7580065e40
        vtable = <optimised out>
        registration_id = <optimised out>
        subtree_registration_id = <optimised out>
        __func__ = "call_in_idle_cb"
#12 0x00007f7599524285 in g_main_dispatch (context=0x563c7c39a3e0) at ../../../../glib/gmain.c:3176
        dispatch = 0x7f7599520c10 <g_idle_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x7f7580065e40
        callback = 0x7f7599b07810 <call_in_idle_cb>
        cb_funcs = 0x7f75997ed280 <g_source_callback_funcs>
        cb_data = 0x7f75800680c0
        need_destroy = <optimised out>
        source = 0x7f75800697b0
        current = 0x563c7c3dc9a0
        i = 8
        current = <optimised out>
        i = <optimised out>
---Type <return> to continue, or q <return> to quit---
       source = <optimised out>
        _g_boolean_var_ = <optimised out>
        was_in_call = <optimised out>
        user_data = <optimised out>
        callback = <optimised out>
        cb_funcs = <optimised out>
        cb_data = <optimised out>
        need_destroy = <optimised out>
        dispatch = <optimised out>
        prev_source = <optimised out>
        _g_boolean_var_ = <optimised out>
#13 g_main_context_dispatch (context=context@entry=0x563c7c39a3e0) at ../../../../glib/gmain.c:3829
No locals.
#14 0x00007f7599524650 in g_main_context_iterate (context=0x563c7c39a3e0, block=block@entry=1, dispatch=dispatch@entry=1, 
    self=<optimised out>) at ../../../../glib/gmain.c:3902
        max_priority = 2147483647
        timeout = -1
        some_ready = 1
        nfds = <optimised out>
        allocated_nfds = 4
        fds = 0x563c7c4cec30
#15 0x00007f7599524962 in g_main_loop_run (loop=0x563c7c4930a0) at ../../../../glib/gmain.c:4098
        self = <optimised out>
        __func__ = "g_main_loop_run"
#16 0x0000563c7a7b1fc7 in main (argc=<optimised out>, argv=<optimised out>) at gf-main.c:163
        session = 0x563c7c5dde80
(gdb)