.
Thread 4 (Thread 0x7fcda0c0d700 (LWP 1971)):
#0  0x00007fcda3cd7bfd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fcda0c1c248 in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#2  0x00007fcda3fb5165 in start_thread (arg=0x7fcda0c0d700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7fcda0c0d700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140521142015744, -5067780333330512931, 0, 0, 140521142016448, 140521142015744, 5057789919903073245, 5057796736920437725}, 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"
#3  0x00007fcda3ce24dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 3 (Thread 0x7fcda1838700 (LWP 1970)):
#0  0x00007fcda3cd7bfd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fcda4458fc4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fcda44592ea in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fcda31dd0c6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007fcda447df65 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fcda3fb5165 in start_thread (arg=0x7fcda1838700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7fcda1838700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140521154774784, -5067780333330512931, 0, 0, 140521154775488, 140521154774784, 5057792683177657309, 5057796736920437725}, 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"
#6  0x00007fcda3ce24dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 2 (Thread 0x7fcda2039700 (LWP 1969)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x00007fcda449aed1 in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fcda442f201 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fcda442f78b in g_async_queue_timeout_pop () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007fcda447e9ac in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fcda447df65 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#6  0x00007fcda3fb5165 in start_thread (arg=0x7fcda2039700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7fcda2039700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140521163167488, -5067780333330512931, 0, 0, 140521163168192, 140521163167488, 5057793774636221405, 5057796736920437725}, 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  0x00007fcda3ce24dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 1 (Thread 0x7fcda51b9840 (LWP 1968)):
#0  0x00007fcda3c1e117 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 1968
        selftid = 1968
#1  0x00007fcda3c1f808 in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7fffc5a75f74, sa_sigaction = 0x7fffc5a75f74}, sa_mask = {__val = {140521193753990, 140520901811944, 454, 4294967295, 140521192392995, 4294967296, 140736509459360, 2461120592, 2458990624, 140521221369040, 0, 0, 0, 21474836480, 140521215221760, 140521193769136}}, sa_flags = -1838178384, sa_restorer = 0x7fcd926fa140}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fcda3c16fc6 in __assert_fail_base (fmt=0x7fcda3d688b0 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7fcd926f9fb0 "s->state == STATE_INIT || s->state == STATE_DISPATCHED || s->state == STATE_FAILURE", file=file@entry=0x7fcd926f9ee8 "simple-watch.c", line=line@entry=454, function=function@entry=0x7fcd926fa140 "avahi_simple_poll_prepare") at assert.c:92
        str = 0x7fcda57bad30 "\270g\372\243\315\177"
        total = 4096
#3  0x00007fcda3c17072 in __GI___assert_fail (assertion=0x7fcd926f9fb0 "s->state == STATE_INIT || s->state == STATE_DISPATCHED || s->state == STATE_FAILURE", file=0x7fcd926f9ee8 "simple-watch.c", line=454, function=0x7fcd926fa140 "avahi_simple_poll_prepare") at assert.c:101
No locals.
#4  0x00007fcd926f81fb in avahi_simple_poll_prepare () from /usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#5  0x00007fcd926f86e9 in avahi_simple_poll_iterate () from /usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#6  0x00007fcd9290bfe4 in ?? () from /usr/lib/x86_64-linux-gnu/sane/libsane-kodakaio.so.1
No symbol table info available.
#7  0x00007fcd929034dc in sanei_configure_attach () from /usr/lib/x86_64-linux-gnu/sane/libsane-kodakaio.so.1
No symbol table info available.
#8  0x00007fcd9290cbb6 in sane_kodakaio_get_devices () from /usr/lib/x86_64-linux-gnu/sane/libsane-kodakaio.so.1
No symbol table info available.
#9  0x00007fcda496e427 in sane_dll_get_devices () from /usr/lib/x86_64-linux-gnu/libsane.so.1
No symbol table info available.
#10 0x00007fcda51e6b0b in _start ()
No symbol table info available.