.
Thread 8 (LWP 20095):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f8244a5b8e7 in g_cond_wait (cond=cond@entry=0x1949ee0, mutex=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gthread-posix.c:759
        _g_boolean_var_ = <optimized out>
        status = <optimized out>
#2  0x00007f8244a41430 in g_thread_pool_free (pool=0x1949ec0, immediate=0, wait_=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gthreadpool.c:773
        real = 0x1949ec0
        __PRETTY_FUNCTION__ = "g_thread_pool_free"
#3  0x00007f82451b1567 in g_threaded_socket_service_finalize (object=0x192fd20) at /build/buildd/glib2.0-2.37.93/./gio/gthreadedsocketservice.c:160
        service = <optimized out>
#4  0x00007f8244ce8d1a in g_object_unref (_object=0x192fd20) at /build/buildd/glib2.0-2.37.93/./gobject/gobject.c:3197
        weak_locations = <optimized out>
        object = 0x192fd20
        old_ref = 1
        __PRETTY_FUNCTION__ = "g_object_unref"
        __FUNCTION__ = "g_object_unref"
#5  0x00007f82451b11e3 in g_threaded_socket_service_func (_data=0x1946640, user_data=0x192fd20) at /build/buildd/glib2.0-2.37.93/./gio/gthreadedsocketservice.c:92
        threaded = 0x192fd20
        data = 0x1946640
        result = 1
#6  0x00007f8244a40d86 in g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gthreadpool.c:309
        task = 0x1946640
        pool = 0x1949ec0
#7  0x00007f8244a403c5 in g_thread_proxy (data=0x1930940) at /build/buildd/glib2.0-2.37.93/./glib/gthread.c:798
        thread = 0x1930940
#8  0x00007f824455ff6e in start_thread (arg=0x7f823affd700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f823affd700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140197312321280, -8158904225925697505, 0, 140197491769440, 140733376854736, 4096, 8197055078706966559, 8196893812961701919}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00007f824428ae2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 7 (LWP 20088):
#0  0x00007f824427e3dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f8244a1b734 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x19452e0, timeout=1500, context=0x1923720) at /build/buildd/glib2.0-2.37.93/./glib/gmain.c:4006
        poll_func = 0x7f8244a2a370 <g_poll>
#2  g_main_context_iterate (context=0x1923720, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gmain.c:3707
        max_priority = 2147483647
        timeout = 1500
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 4
        fds = 0x19452e0
#3  0x00007f8244a1bb9a in g_main_loop_run (loop=0x192e920) at /build/buildd/glib2.0-2.37.93/./glib/gmain.c:3906
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00000000004099d1 in daemon_main (argc=argc@entry=4, argv=argv@entry=0x7fff0aef8528, max_job_threads=max_job_threads@entry=-1, default_type=default_type@entry=0x409b1f "mtp", mountable_name=mountable_name@entry=0x0, first_type_name=first_type_name@entry=0x409b1f "mtp") at daemon-main.c:405
        var_args = {{gp_offset = 48, fp_offset = 32642, overflow_arg_area = 0x7fff0aef8430, reg_save_area = 0x7fff0aef83b0}}
        type = 0x0
        name_owner_id = 0
        data = 0x19303c0
#5  0x0000000000404a08 in main (argc=4, argv=0x7fff0aef8528) at daemon-main-generic.c:42
No locals.
.
Thread 6 (LWP 20089):
#0  0x00007f824427e3dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f8244a1b734 in g_main_context_poll (priority=2147483647, n_fds=13, fds=0x7f823c00c4f0, timeout=-1, context=0x192e5e0) at /build/buildd/glib2.0-2.37.93/./glib/gmain.c:4006
        poll_func = 0x7f8244a2a370 <g_poll>
#2  g_main_context_iterate (context=0x192e5e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gmain.c:3707
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 13
        allocated_nfds = 13
        fds = 0x7f823c00c4f0
#3  0x00007f8244a1bb9a in g_main_loop_run (loop=0x192e570) at /build/buildd/glib2.0-2.37.93/./glib/gmain.c:3906
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f82452042f6 in gdbus_shared_thread_func (user_data=0x192e5b0) at /build/buildd/glib2.0-2.37.93/./gio/gdbusprivate.c:278
        data = 0x192e5b0
#5  0x00007f8244a403c5 in g_thread_proxy (data=0x1930450) at /build/buildd/glib2.0-2.37.93/./glib/gthread.c:798
        thread = 0x1930450
#6  0x00007f824455ff6e in start_thread (arg=0x7f8241f0b700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f8241f0b700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140197428770560, -8158904225925697505, 0, 140197491769440, 140733376856672, 4096, 8196898994226720799, 8196893812961701919}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f824428ae2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 5 (LWP 20244):
#0  0x00007f824456305f in __pthread_mutex_unlock_usercnt (mutex=0x1928640, decr=decr@entry=1) at pthread_mutex_unlock.c:52
        type = 3
        __PRETTY_FUNCTION__ = "__pthread_mutex_unlock_usercnt"
#1  0x00007f82445630ea in __GI___pthread_mutex_unlock (mutex=<optimized out>) at pthread_mutex_unlock.c:297
No locals.
#2  0x00007f8244a5b6a1 in g_mutex_unlock (mutex=mutex@entry=0x7f824549f348 <g__properties_lock_lock>) at /build/buildd/glib2.0-2.37.93/./glib/gthread-posix.c:232
        _g_boolean_var_ = <optimized out>
        status = <optimized out>
#3  0x00007f8245203931 in g_dbus_proxy_set_default_timeout (proxy=0x7f823400d6c0, timeout_msec=-1) at /build/buildd/glib2.0-2.37.93/./gio/gdbusproxy.c:2470
        __PRETTY_FUNCTION__ = "g_dbus_proxy_set_default_timeout"
#4  0x00007f8244ce98a9 in object_set_property (nqueue=0x7f8234001130, value=<optimized out>, pspec=0x1928d20, object=0x7f823400d6c0) at /build/buildd/glib2.0-2.37.93/./gobject/gobject.c:1366
        tmp_value = {g_type = 24, data = {{v_int = -1, v_uint = 4294967295, v_long = 4294967295, v_ulong = 4294967295, v_int64 = 4294967295, v_uint64 = 4294967295, v_float = -nan(0x7fffff), v_double = 2.1219957904712067e-314, v_pointer = 0xffffffff}, {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}}}
        redirect = <optimized out>
        enable_diagnostic = 0x7f8244d170e6 "0"
        class = 0x19370d0
        param_id = 8
#5  g_object_new_internal (class=class@entry=0x7f8234018730, params=params@entry=0x7f823bffe720, n_params=5) at /build/buildd/glib2.0-2.37.93/./gobject/gobject.c:1779
        value = <optimized out>
        pspec = 0x1928d20
        j = <optimized out>
        node = 0x7f8234001220
        nqueue = 0x7f8234001130
        object = 0x7f823400d6c0
        __FUNCTION__ = "g_object_new_internal"
#6  0x00007f8244ceb634 in g_object_new_valist (object_type=object_type@entry=140197194924224, first_property_name=first_property_name@entry=0x7f82454c9589 "g-flags", var_args=0x7f823bffe8d8) at /build/buildd/glib2.0-2.37.93/./gobject/gobject.c:2002
        stack_params = {{pspec = 0x1928ca0, value = 0x7f823bffe670}, {pspec = 0x19223a0, value = 0x7f823bffe640}, {pspec = 0x1928c20, value = 0x7f823bffe610}, {pspec = 0x19224c0, value = 0x7f823bffe5e0}, {pspec = 0x1922550, value = 0x7f823bffe5b0}, {pspec = 0x7f82300019c0, value = 0x7f82300019c0}, {pspec = 0x7f82300019c0, value = 0x7f82300019d6}, {pspec = 0x7f8230001a24, value = 0x7f82300019c0}, {pspec = 0x7f8230001a24, value = 0x0}, {pspec = 0x0, value = 0x0}, {pspec = 0x0, value = 0x0}, {pspec = 0x4300019c0, value = 0x1000}, {pspec = 0x100000000, value = 0x0}, {pspec = 0xc, value = 0x7f823bffe8c8}, {pspec = 0x7f82300019c0, value = 0x0}, {pspec = 0x7f8234009790, value = 0x7f82442144d0 <__GI___libc_malloc+96>}}
        params = 0x7f823bffe720
        name = <optimized out>
        n_params = 5
        class = <optimized out>
        unref_class = <optimized out>
        object = <optimized out>
        __PRETTY_FUNCTION__ = "g_object_new_valist"
        __FUNCTION__ = "g_object_new_valist"
#7  0x00007f8245163fdb in g_async_initable_new_valist_async (object_type=140197194924224, first_property_name=0x7f82454c9589 "g-flags", var_args=0x7f823bffe8d8, io_priority=0, cancellable=0x0, callback=0x7f82456e5bd0 <unregister_mount_got_proxy_cb>, user_data=0x7f82300010c0) at /build/buildd/glib2.0-2.37.93/./gio/gasyncinitable.c:425
        obj = <optimized out>
        __PRETTY_FUNCTION__ = "g_async_initable_new_valist_async"
#8  0x00007f82451640ab in g_async_initable_new_async (object_type=<optimized out>, io_priority=io_priority@entry=0, cancellable=cancellable@entry=0x0, callback=callback@entry=0x7f82456e5bd0 <unregister_mount_got_proxy_cb>, user_data=user_data@entry=0x7f82300010c0, first_property_name=first_property_name@entry=0x7f82454c9589 "g-flags") at /build/buildd/glib2.0-2.37.93/./gio/gasyncinitable.c:341
        var_args = {{gp_offset = 48, fp_offset = 48, overflow_arg_area = 0x7f823bffea00, reg_save_area = 0x7f823bffe8f0}}
#9  0x00007f82454bd31e in gvfs_dbus_mount_tracker_proxy_new_for_bus (bus_type=bus_type@entry=G_BUS_TYPE_SESSION, flags=flags@entry=(G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES | G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS), name=name@entry=0x7f82456f3c65 "org.gtk.vfs.Daemon", object_path=object_path@entry=0x7f82456f3f49 "/org/gtk/vfs/mounttracker", cancellable=cancellable@entry=0x0, callback=callback@entry=0x7f82456e5bd0 <unregister_mount_got_proxy_cb>, user_data=user_data@entry=0x7f82300010c0) at gvfsdbus.c:4584
No locals.
#10 0x00007f82456e5bbf in create_mount_tracker_proxy (backend=0x193a8d0, op_callback=0x7f82456eab80 <unregister_mount_callback>, op_callback_data=0x7f8220013590, callback=0x7f82456e5bd0 <unregister_mount_got_proxy_cb>) at gvfsbackend.c:641
        data = 0x7f82300010c0
#11 0x00007f8244ce4517 in _g_closure_invoke_va (closure=0x1940c60, return_value=0x0, instance=0x7f8220013590, args=0x7f823bffec58, n_params=0, param_types=0x0) at /build/buildd/glib2.0-2.37.93/./gobject/gclosure.c:840
        marshal = 0x7f8244ce2a60 <g_type_class_meta_marshalv>
        marshal_data = 0x90
        in_marshal = 0
        real_closure = 0x1940c40
        __PRETTY_FUNCTION__ = "_g_closure_invoke_va"
#12 0x00007f8244cfe34c in g_signal_emit_valist (instance=0x7f8220013590, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7f823bffec58) at /build/buildd/glib2.0-2.37.93/./gobject/gsignal.c:3238
        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 = 0x7f8220013590, ihint = {signal_id = 46, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 26565344}
        signal_id = 46
        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 = 0x1940c60
        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"
#13 0x00007f8244cfec22 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.37.93/./gobject/gsignal.c:3386
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7f823bffed30, reg_save_area = 0x7f823bffec70}}
#14 0x00007f82456e995c in g_vfs_job_send_reply (job=<optimized out>) at gvfsjob.c:236
No locals.
#15 g_vfs_job_succeeded (job=<optimized out>) at gvfsjob.c:302
No locals.
#16 0x0000000000408741 in do_unmount (backend=<optimized out>, job=0x7f8220013590, flags=<optimized out>, mount_source=<optimized out>) at gvfsbackendmtp.c:775
        op_backend = 0x193a8d0
#17 0x00007f82456eae36 in run (job=<optimized out>) at gvfsjobunmount.c:172
        op_job = 0x7f8220013590
        class = 0x193a160
#18 0x00007f82456e972a in g_vfs_job_run (job=0x7f8220013590) at gvfsjob.c:197
        class = 0x1951cd0
#19 0x00007f82456e41ff in job_handler_callback (data=<optimized out>, user_data=<optimized out>) at gvfsdaemon.c:200
        job = 0x7f8220013590
#20 0x00007f8244a40d86 in g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gthreadpool.c:309
        task = 0x7f8220013590
        pool = 0x19334a0
#21 0x00007f8244a403c5 in g_thread_proxy (data=0x7f8220006c00) at /build/buildd/glib2.0-2.37.93/./glib/gthread.c:798
        thread = 0x7f8220006c00
#22 0x00007f824455ff6e in start_thread (arg=0x7f823bfff700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f823bfff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140197329106688, -8158904225925697505, 0, 140197194944288, 140733376853536, 16, 8197052880757452831, 8196893812961701919}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#23 0x00007f824428ae2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 4 (LWP 20094):
#0  0x00007f824427e3dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f8242e842ae in poll (__timeout=60000, __nfds=3, __fds=0x7f82280009f0) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
No locals.
#2  handle_events (ctx=ctx@entry=0x7f82340079a0, tv=tv@entry=0x7f823b7fdb90) at ../../libusb/io.c:1959
        r = <optimized out>
        ipollfd = <optimized out>
        nfds = 3
        fds = 0x7f82280009f0
        i = <optimized out>
        timeout_ms = 60000
        __FUNCTION__ = "handle_events"
#3  0x00007f8242e84f03 in libusb_handle_events_timeout_completed (ctx=ctx@entry=0x7f82340079a0, tv=tv@entry=0x7f823b7fdbd0, completed=completed@entry=0x7f823b7fdc2c) at ../../libusb/io.c:2122
        r = 0
        poll_timeout = {tv_sec = 60, tv_usec = 0}
        __FUNCTION__ = "libusb_handle_events_timeout_completed"
#4  0x00007f8242e85000 in libusb_handle_events_completed (ctx=ctx@entry=0x7f82340079a0, completed=completed@entry=0x7f823b7fdc2c) at ../../libusb/io.c:2221
        tv = {tv_sec = 60, tv_usec = 0}
#5  0x00007f8242e85851 in sync_transfer_wait_for_completion (transfer=transfer@entry=0x7f8228000918) at ../../libusb/sync.c:50
        r = <optimized out>
        completed = 0x7f823b7fdc2c
        ctx = 0x7f82340079a0
        __FUNCTION__ = "sync_transfer_wait_for_completion"
#6  0x00007f8242e85929 in do_sync_bulk_transfer (dev_handle=0x7f8234009620, endpoint=<optimized out>, buffer=buffer@entry=0x7f823b7fdca0 "", length=length@entry=24, transferred=transferred@entry=0x7f823b7fdc9c, timeout=timeout@entry=0, type=type@entry=2 '\002') at ../../libusb/sync.c:179
        transfer = 0x7f8228000918
        completed = 0
        r = <optimized out>
        __FUNCTION__ = "do_sync_bulk_transfer"
#7  0x00007f8242e85cb4 in libusb_bulk_transfer (dev_handle=<optimized out>, endpoint=<optimized out>, data=data@entry=0x7f823b7fdca0 "", length=length@entry=24, transferred=transferred@entry=0x7f823b7fdc9c, timeout=timeout@entry=0) at ../../libusb/sync.c:256
No locals.
#8  0x00007f82447ad4a6 in ptp_usb_event (wait=0, event=0x7f823b7fdcf0, params=0x7f823400c7c0) at libusb1-glue.c:1564
        ret = 8193
        usbevent = {length = 0, type = 0, code = 0, trans_id = 0, param1 = 0, param2 = 0, param3 = 0}
        ptp_usb = 0x7f8234009790
        result = <optimized out>
        xread = 0
        rlen = <optimized out>
#9  ptp_usb_event_wait (params=0x7f823400c7c0, event=event@entry=0x7f823b7fdcf0) at libusb1-glue.c:1623
No locals.
#10 0x00007f824478d21a in LIBMTP_Read_Event (device=device@entry=0x7f8234008f40, event=event@entry=0x7f823b7fdd58, out1=out1@entry=0x7f823b7fdd5c) at libmtp.c:2153
        params = <optimized out>
        ptp_event = {Code = 4, SessionID = 0, Transaction_ID = 0, Param1 = 0, Param2 = 998235484, Param3 = 32642, Param4 = 998235480, Param5 = 32642, Nparam = 64 '@'}
        ret = <optimized out>
        code = <optimized out>
        session_id = <optimized out>
        transaction_id = <optimized out>
        param1 = <optimized out>
        param2 = <optimized out>
        param3 = <optimized out>
        __FUNCTION__ = "LIBMTP_Read_Event"
#11 0x00000000004087b7 in check_event (user_data=0x7f8234008ac0) at gvfsbackendmtp.c:573
        device = 0x7f8234008f40
        param1 = 0
        path = <optimized out>
        backend = <optimized out>
        event_ref = 0x7f8234008ac0
        event = LIBMTP_EVENT_NONE
        ret = 0
#12 0x00007f8244a403c5 in g_thread_proxy (data=0x7f823c003de0) at /build/buildd/glib2.0-2.37.93/./glib/gthread.c:798
        thread = 0x7f823c003de0
#13 0x00007f824455ff6e in start_thread (arg=0x7f823b7fe700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f823b7fe700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140197320713984, -8158904225925697505, 0, 140197491769440, 140197420375072, 4096, 8197053979732209695, 8196893812961701919}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#14 0x00007f824428ae2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 3 (LWP 20104):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f8244a5b8e7 in g_cond_wait (cond=cond@entry=0x194bce0, mutex=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gthread-posix.c:759
        _g_boolean_var_ = <optimized out>
        status = <optimized out>
#2  0x00007f8244a41430 in g_thread_pool_free (pool=0x194bcc0, immediate=0, wait_=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gthreadpool.c:773
        real = 0x194bcc0
        __PRETTY_FUNCTION__ = "g_thread_pool_free"
#3  0x00007f82451b1567 in g_threaded_socket_service_finalize (object=0x7f823c00bdb0) at /build/buildd/glib2.0-2.37.93/./gio/gthreadedsocketservice.c:160
        service = <optimized out>
#4  0x00007f8244ce8d1a in g_object_unref (_object=0x7f823c00bdb0) at /build/buildd/glib2.0-2.37.93/./gobject/gobject.c:3197
        weak_locations = <optimized out>
        object = 0x7f823c00bdb0
        old_ref = 1
        __PRETTY_FUNCTION__ = "g_object_unref"
        __FUNCTION__ = "g_object_unref"
#5  0x00007f82451b11e3 in g_threaded_socket_service_func (_data=0x7f8234002ea0, user_data=0x7f823c00bdb0) at /build/buildd/glib2.0-2.37.93/./gio/gthreadedsocketservice.c:92
        threaded = 0x7f823c00bdb0
        data = 0x7f8234002ea0
        result = 1
#6  0x00007f8244a40d86 in g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gthreadpool.c:309
        task = 0x7f8234002ea0
        pool = 0x194bcc0
#7  0x00007f8244a403c5 in g_thread_proxy (data=0x1930a30) at /build/buildd/glib2.0-2.37.93/./glib/gthread.c:798
        thread = 0x1930a30
#8  0x00007f824455ff6e in start_thread (arg=0x7f823a7fc700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f823a7fc700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140197303928576, -8158904225925697505, 0, 140197491769440, 140733376854736, 4096, 8197056181976690719, 8196893812961701919}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00007f824428ae2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 2 (LWP 20092):
#0  0x00007f824427e3dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f8242e8a198 in poll (__timeout=-1, __nfds=2, __fds=0x7f8240f08dc0) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
No locals.
#2  linux_udev_event_thread_main (arg=<optimized out>) at ../../libusb/os/linux_udev.c:175
        dummy = 0 '\000'
        r = <optimized out>
        udev_dev = <optimized out>
        fds = {{fd = 9, events = 1, revents = 0}, {fd = 8, events = 1, revents = 0}}
        __FUNCTION__ = "linux_udev_event_thread_main"
#3  0x00007f824455ff6e in start_thread (arg=0x7f8240f09700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f8240f09700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140197411985152, -8158904225925697505, 0, 140197491769440, 140197469001504, 4096, 8196901192176234527, 8196893812961701919}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#4  0x00007f824428ae2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 1 (LWP 20245):
#0  0x00007f8234000078 in ?? ()
No symbol table info available.
#1  0x00007f824479909d in ptp_transaction_new (params=0x7f823400c7c0, ptp=0x7f8239ffabd0, flags=<optimized out>, sendlen=0, handler=0x7f8239ffab60) at ptp.c:152
        r = <optimized out>
        tries = <optimized out>
        cmd = 4100
        sendlen = 0
        flags = 2
        params = 0x7f823400c7c0
        handler = 0x7f8239ffab60
        ptp = 0x7f8239ffabd0
#2  0x00007f82447992f9 in ptp_transaction (params=params@entry=0x7f823400c7c0, ptp=ptp@entry=0x7f8239ffabd0, flags=flags@entry=2, sendlen=sendlen@entry=0, data=data@entry=0x7f8239ffabc8, recvlen=recvlen@entry=0x7f8239ffabc4) at ptp.c:400
        handler = {getfunc = 0x7f8244796a30 <memory_getfunc>, putfunc = 0x7f8244796a80 <memory_putfunc>, priv = 0x7f8224001580}
        ret = <optimized out>
#3  0x00007f8244799ed4 in ptp_getstorageids (params=params@entry=0x7f823400c7c0, storageids=storageids@entry=0x7f8239ffac40) at ptp.c:596
        ret = <optimized out>
        ptp = {Code = 4100, SessionID = 1, Transaction_ID = 111, Param1 = 0, Param2 = 0, Param3 = 0, Param4 = 0, Param5 = 0, Nparam = 0 '\000'}
        len = 0
        sids = 0x0
#4  0x00007f824478efe4 in LIBMTP_Get_Storage (device=device@entry=0x7f8234008f40, sortby=sortby@entry=0) at libmtp.c:3960
        i = 0
        storageInfo = {StorageType = 0, FilesystemType = 0, AccessCapability = 0, MaxCapability = 0, FreeSpaceInBytes = 0, FreeSpaceInImages = 0, StorageDescription = 0x0, VolumeLabel = 0x0}
        params = 0x7f823400c7c0
        storageIDs = {n = 0, Storage = 0x0}
        storage = 0x0
        storageprev = 0x0
#5  0x0000000000405017 in add_cache_entries_for_filename (path=0x1948c40 "/Nexus 4", backend=0x193a8d0) at gvfsbackendmtp.c:208
        file = 0x0
        device = 0x7f8234008f40
        i = <optimized out>
        storage = <optimized out>
        ret = <optimized out>
        elements = 0x7f8224001560
        ne = 2
        parent_id = <optimized out>
#6  get_cache_entry (backend=0x193a8d0, path=path@entry=0x1948c40 "/Nexus 4") at gvfsbackendmtp.c:269
        entry = <optimized out>
#7  0x0000000000408577 in do_query_info (backend=0x193a8d0, job=0x1950660, filename=0x1948c40 "/Nexus 4", flags=<optimized out>, info=0x7f822000c600, matcher=<optimized out>) at gvfsbackendmtp.c:1228
        entry = <optimized out>
        storage = <optimized out>
        elements = 0x7f8224001500
        ne = <optimized out>
        device = 0x7f8234008f40
#8  0x00007f82456e972a in g_vfs_job_run (job=0x1950660) at gvfsjob.c:197
        class = 0x1947b30
#9  0x00007f82456e41ff in job_handler_callback (data=<optimized out>, user_data=<optimized out>) at gvfsdaemon.c:200
        job = 0x1950660
#10 0x00007f8244a40d86 in g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.37.93/./glib/gthreadpool.c:309
        task = 0x1950660
        pool = 0x19334a0
#11 0x00007f8244a403c5 in g_thread_proxy (data=0x7f822c005b20) at /build/buildd/glib2.0-2.37.93/./glib/gthread.c:798
        thread = 0x7f822c005b20
#12 0x00007f824455ff6e in start_thread (arg=0x7f8239ffb700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f8239ffb700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140197295535872, -8158904225925697505, 0, 26561616, 140733376853488, 16, 8197057280951447583, 8196893812961701919}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#13 0x00007f824428ae2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.