.
Thread 5 (Thread 0x7fcbdaffd700 (LWP 3843)):
#0  0x00007fcbe2e9a3cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fcbe1aac123 in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#2  0x00007fcbe1aacd97 in libusb_handle_events_timeout_completed () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#3  0x00007fcbe1aace60 in libusb_handle_events_completed () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#4  0x00007fcbe1aad5d9 in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#5  0x00007fcbe1aad9a4 in libusb_bulk_transfer () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#6  0x00007fcbe33c9b3a in ?? () from /usr/lib/x86_64-linux-gnu/libmtp.so.9
No symbol table info available.
#7  0x00007fcbe33a9b55 in LIBMTP_Read_Event () from /usr/lib/x86_64-linux-gnu/libmtp.so.9
No symbol table info available.
#8  0x0000000000404afd in ?? ()
No symbol table info available.
#9  0x00007fcbe365b075 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#10 0x00007fcbe317cf8e in start_thread (arg=0x7fcbdaffd700) at pthread_create.c:311
        __res = <optimised out>
        pd = 0x7fcbdaffd700
        now = <optimised out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140513529288448, -292252827977676036, 0, 140513687810144, 140513546071136, 4096, 316941263736244988, 317068051132943100}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimised out>
        sp = <optimised out>
        freesize = <optimised out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x00007fcbe2ea6e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 4 (Thread 0x7fcbda7fc700 (LWP 3844)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x00007fcbe3676bf5 in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fcbe360cbb1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fcbe365b7ba in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007fcbe365b075 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fcbe317cf8e in start_thread (arg=0x7fcbda7fc700) at pthread_create.c:311
        __res = <optimised out>
        pd = 0x7fcbda7fc700
        now = <optimised out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140513520895744, -292252827977676036, 0, 140513687810144, 140734270232896, 4096, 316942363784743676, 317068051132943100}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimised out>
        sp = <optimised out>
        freesize = <optimised out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007fcbe2ea6e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 3 (Thread 0x7fcbe0f4e700 (LWP 3839)):
#0  0x00007fcbe2e9a3cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fcbe363715c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fcbe363763a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fcbe3e1d726 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007fcbe365b075 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fcbe317cf8e in start_thread (arg=0x7fcbe0f4e700) at pthread_create.c:311
        __res = <optimised out>
        pd = 0x7fcbe0f4e700
        now = <optimised out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140513629234944, -292252827977676036, 0, 140513687810144, 140734270235040, 4096, 317068849497869052, 317068051132943100}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimised out>
        sp = <optimised out>
        freesize = <optimised out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007fcbe2ea6e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 2 (Thread 0x7fcbdbfff700 (LWP 3855)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x00007fcbe3676bf5 in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fcbe360cbb1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fcbe365b7ba in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007fcbe365b075 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fcbe317cf8e in start_thread (arg=0x7fcbdbfff700) at pthread_create.c:311
        __res = <optimised out>
        pd = 0x7fcbdbfff700
        now = <optimised out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140513546073856, -292252827977676036, 0, 35854752, 140513520891408, 16, 316943461685758716, 317068051132943100}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimised out>
        sp = <optimised out>
        freesize = <optimised out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007fcbe2ea6e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 1 (Thread 0x7fcbe46ff7c0 (LWP 3838)):
#0  0x00007fcbe42f40bc in ?? () from /usr/lib/x86_64-linux-gnu/gvfs/libgvfsdaemon.so
No symbol table info available.
#1  0x00007fcbe38fe7d2 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#2  0x00007fcbe38ff744 in g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#3  0x00007fcbe391f593 in g_value_unset () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#4  0x00007fcbe3914d39 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#5  0x00007fcbe3914f22 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#6  0x00007fcbe42f646c in ?? () from /usr/lib/x86_64-linux-gnu/gvfs/libgvfsdaemon.so
No symbol table info available.
#7  0x00007fcbe3db927e in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#8  0x00007fcbe3e191d3 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#9  0x00007fcbe3db927e in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#10 0x00007fcbe3e0f49a in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#11 0x00007fcbe3db927e in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#12 0x00007fcbe3db93ac in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#13 0x00007fcbe3636e85 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#14 0x00007fcbe36371c8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#15 0x00007fcbe363763a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#16 0x00000000004077c1 in ?? ()
No symbol table info available.
#17 0x0000000000403fb8 in ?? ()
No symbol table info available.
#18 0x00007fcbe2dceea5 in __libc_start_main (main=0x403f60, argc=4, ubp_av=0x7fff402f6468, init=<optimised out>, fini=<optimised out>, rtld_fini=<optimised out>, stack_end=0x7fff402f6458) at libc-start.c:260
        result = <optimised out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -292252827977676036, 4210628, 140734270235744, 0, 0, 292511630504856316, 317064107313564412}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x407850, 0x7fff402f6468}, data = {prev = 0x0, cleanup = 0x0, canceltype = 4225104}}}
        not_first_call = <optimised out>
#19 0x0000000000403fed in ?? ()
No symbol table info available.