ThreadStacktrace:
 .
 Thread 4 (Thread 0x7f8ee3449700 (LWP 3443)):
 #0  0x00007f8eec41110d in poll () at ../sysdeps/unix/syscall-template.S:84
 #1  0x00007f8eeb3141ed in poll (__timeout=60000, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
         r = <optimized out>
         ipollfd = <optimized out>
         nfds = <optimized out>
         internal_nfds = <optimized out>
         fds = <optimized out>
         i = <optimized out>
         timeout_ms = 60000
         special_event = <optimized out>
 #2  0x00007f8eeb3141ed in handle_events (ctx=ctx@entry=0x5612d33e9200, tv=tv@entry=0x7f8ee3448c70) at ../../libusb/io.c:2151
         r = <optimized out>
         ipollfd = <optimized out>
         nfds = <optimized out>
         internal_nfds = <optimized out>
         fds = <optimized out>
         i = <optimized out>
         timeout_ms = 60000
         special_event = <optimized out>
 #3  0x00007f8eeb315140 in handle_events (tv=0x7f8ee3448c70, ctx=0x5612d33e9200) at ../../libusb/io.c:2084
         nfds = 0
         fds = 0x0
         i = -1
         r = <optimized out>
         poll_timeout = {tv_sec = 60, tv_usec = 0}
         __FUNCTION__ = "libusb_handle_events_timeout_completed"
 #4  0x00007f8eeb315140 in libusb_handle_events_timeout_completed (ctx=0x5612d33e9200, tv=tv@entry=0x7f8ee3448cc0, completed=completed@entry=0x0) at ../../libusb/io.c:2345
         r = <optimized out>
         poll_timeout = {tv_sec = 60, tv_usec = 0}
         __FUNCTION__ = "libusb_handle_events_timeout_completed"
 #5  0x00007f8eeb31523f in libusb_handle_events (ctx=<optimized out>) at ../../libusb/io.c:2421
         tv = {tv_sec = 60, tv_usec = 0}
 #6  0x00007f8eedd7bbe1 in  () at /usr/lib/x86_64-linux-gnu/libgusb.so.2
 #7  0x00007f8eed0cc385 in g_thread_proxy (data=0x5612d2e41c00) at ././glib/gthread.c:784
         thread = 0x5612d2e41c00
 #8  0x00007f8eec6e36ca in start_thread (arg=0x7f8ee3449700) at pthread_create.c:333
         __res = <optimized out>
         pd = 0x7f8ee3449700
         now = <optimized out>
         unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140251675006720, -3642870872762727422, 0, 140731314669023, 140251675007424, 140251675006720, 3633325955857794050, 3633337143025615874}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
         not_first_call = <optimized out>
         pagesize_m1 = <optimized out>
         sp = <optimized out>
         freesize = <optimized out>
         __PRETTY_FUNCTION__ = "start_thread"
 #9  0x00007f8eec41d0ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
 .
 Thread 3 (Thread 0x7f8ee444b700 (LWP 3430)):
 #0  0x00007f8eec41110d in poll () at ../sysdeps/unix/syscall-template.S:84
 #1  0x00007f8eed0a4a36 in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x7f8edc0008c0, timeout=<optimized out>, context=0x5612d2e4b1b0) at ././glib/gmain.c:4228
         poll_func = 0x7f8eed0b4880 <g_poll>
         max_priority = 2147483647
         timeout = 4237
         some_ready = <optimized out>
         nfds = 2
         allocated_nfds = 2
         fds = 0x7f8edc0008c0
 #2  0x00007f8eed0a4a36 in g_main_context_iterate (context=context@entry=0x5612d2e4b1b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
         max_priority = 2147483647
         timeout = 4237
         some_ready = <optimized out>
         nfds = 2
         allocated_nfds = 2
         fds = 0x7f8edc0008c0
 #3  0x00007f8eed0a4b4c in g_main_context_iteration (context=0x5612d2e4b1b0, may_block=may_block@entry=1) at ././glib/gmain.c:3990
         retval = <optimized out>
 #4  0x00007f8eed0a4b91 in glib_worker_main (data=<optimized out>) at ././glib/gmain.c:5783
 #5  0x00007f8eed0cc385 in g_thread_proxy (data=0x5612d2e418a0) at ././glib/gthread.c:784
         thread = 0x5612d2e418a0
 #6  0x00007f8eec6e36ca in start_thread (arg=0x7f8ee444b700) at pthread_create.c:333
         __res = <optimized out>
         pd = 0x7f8ee444b700
         now = <optimized out>
         unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140251691792128, -3642870872762727422, 0, 140731314668287, 140251691792832, 140251691792128, 3633319357714285570, 3633337143025615874}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
         not_first_call = <optimized out>
         pagesize_m1 = <optimized out>
         sp = <optimized out>
         freesize = <optimized out>
         __PRETTY_FUNCTION__ = "start_thread"
 #7  0x00007f8eec41d0ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
 .
 Thread 2 (Thread 0x7f8ee3c4a700 (LWP 3442)):
 #0  0x00007f8eec41110d in poll () at ../sysdeps/unix/syscall-template.S:84
 #1  0x00007f8eeb31a721 in poll (__timeout=-1, __nfds=2, __fds=0x7f8ee3c49ce0) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
         dummy = 0 '\000'
         r = <optimized out>
         udev_dev = <optimized out>
         fds = {{fd = 7, events = 1, revents = 0}, {fd = 6, events = 1, revents = 0}}
         __FUNCTION__ = "linux_udev_event_thread_main"
 #2  0x00007f8eeb31a721 in 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 = 7, events = 1, revents = 0}, {fd = 6, events = 1, revents = 0}}
         __FUNCTION__ = "linux_udev_event_thread_main"
 #3  0x00007f8eec6e36ca in start_thread (arg=0x7f8ee3c4a700) at pthread_create.c:333
         __res = <optimized out>
         pd = 0x7f8ee3c4a700
         now = <optimized out>
         unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140251683399424, -3642870872762727422, 0, 140731314668879, 140251683400128, 140251683399424, 3633327054832550914, 3633337143025615874}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
         not_first_call = <optimized out>
         pagesize_m1 = <optimized out>
         sp = <optimized out>
         freesize = <optimized out>
         __PRETTY_FUNCTION__ = "start_thread"
 #4  0x00007f8eec41d0ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
 .
 Thread 1 (Thread 0x7f8eee522940 (LWP 3419)):
 #0  0x00007f8eec398c8d in _int_malloc (av=av@entry=0x7f8eec6d6b00 <main_arena>, bytes=bytes@entry=72) at malloc.c:3413
         ret = <optimized out>
         __atg1_result = <optimized out>
         fb = 0x7f8eec6d6b20 <main_arena+32>
         pp = 0x561200000000
         nb = 80
         idx = 3
         bin = <optimized out>
         victim = 0x561200000000
         size = <optimized out>
         victim_index = <optimized out>
         remainder = <optimized out>
         remainder_size = <optimized out>
         block = <optimized out>
         bit = <optimized out>
         map = <optimized out>
         fwd = <optimized out>
         bck = <optimized out>
         errstr = 0x0
         __func__ = "_int_malloc"
 #1  0x00007f8eec39bc2b in __libc_calloc (n=<optimized out>, elem_size=<optimized out>) at malloc.c:3271
         av = 0x7f8eec6d6b00 <main_arena>
         oldtop = 0x5612d50113f0
         p = <optimized out>
         bytes = 72
         sz = 72
         csz = <optimized out>
         oldtopsize = 4852752
         mem = <optimized out>
         clearsize = <optimized out>
         nclears = <optimized out>
         d = <optimized out>
         hook = <optimized out>
         __func__ = "__libc_calloc"
 #2  0x00007f8eed0a9ea1 in g_malloc0 (n_bytes=n_bytes@entry=72) at ././glib/gmem.c:124
         mem = <optimized out>
 #3  0x00007f8eed37cd74 in g_closure_new_simple (sizeof_closure=sizeof_closure@entry=40, data=data@entry=0x5612d2e3ca00) at ././gobject/gclosure.c:214
         private_size = 32
         allocated = <optimized out>
         __func__ = "g_closure_new_simple"
 #4  0x00007f8eed37e330 in g_cclosure_new (callback_func=0x5612d2bf1050, user_data=0x5612d2e3ca00, destroy_data=0x0) at ././gobject/gclosure.c:944
         closure = <optimized out>
         __func__ = "g_cclosure_new"
 #5  0x00007f8eed396651 in g_signal_connect_data (instance=0x5612d40d2d00, detailed_signal=<optimized out>, c_handler=<optimized out>, data=<optimized out>, destroy_data=<optimized out>, connect_flags=<optimized out>) at ././gobject/gsignal.c:2510
         handler_seq_no = 57
         detail = 0
         itype = <optimized out>
         swapped = <optimized out>
         after = <optimized out>
         __func__ = "g_signal_connect_data"
 #6  0x00005612d2beaeac in main ()