.
Thread 9 (Thread 0x7ffb73122700 (LWP 8045)):
#0  0x00007ffb8a37dbf9 in __GI___poll (fds=0x7ffb73121b80, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007ffb8516a6ff in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#2  0x00007ffb89ddf6db in start_thread (arg=0x7ffb73122700) at pthread_create.c:463
        pd = 0x7ffb73122700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140717944088320, 4260862723765981824, 140717944085632, 0, 0, 140722193518800, -4262861323311361408, -4263022456353959296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#3  0x00007ffb8a38a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 8 (Thread 0x7ffb72921700 (LWP 8046)):
#0  0x00007ffb8a37dbf9 in __GI___poll (fds=0x7ffb5c000b20, nfds=2, timeout=60000) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007ffb851641cd in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#2  0x00007ffb85165130 in libusb_handle_events_timeout_completed () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#3  0x00007ffb8516522f in libusb_handle_events () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
No symbol table info available.
#4  0x00007ffb8b17bc11 in ?? () from /usr/lib/x86_64-linux-gnu/libgusb.so.2
No symbol table info available.
#5  0x00007ffb8cd43e05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#6  0x00007ffb89ddf6db in start_thread (arg=0x7ffb72921700) at pthread_create.c:463
        pd = 0x7ffb72921700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140717935695616, 4260862723765981824, 140717935692928, 0, 94675192965840, 140722193519072, -4262862422286118272, -4263022456353959296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#7  0x00007ffb8a38a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 7 (Thread 0x7ffb8d569a80 (LWP 7969)):
#0  0x00007ffb8a37dbf9 in __GI___poll (fds=0x561b48fb64b0, nfds=3, timeout=138) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007ffb8cd1c439 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007ffb8cd1c54c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007ffb8b898d0d in g_application_run () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x0000561b48347693 in ?? ()
No symbol table info available.
#5  0x00007ffb8a28ab97 in __libc_start_main (main=0x561b48327600, argc=1, argv=0x7ffc705b5b98, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc705b5b88) at ../csu/libc-start.c:310
        self = <optimized out>
        __self = <optimized out>
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -7559520157473287552, 94675175372304, 140722193521552, 0, 0, -4262304495800266112, -4263021796726910336}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffb8d394733 <_dl_init+259>, 0x7ffb8ccb9878}, data = {prev = 0x0, cleanup = 0x0, canceltype = -1925626061}}}
        not_first_call = <optimized out>
#6  0x0000561b4832763a in ?? ()
No symbol table info available.
.
Thread 6 (Thread 0x7ffb6b122700 (LWP 8128)):
#0  0x00007ffb8a37dbf9 in __GI___poll (fds=0x7ffb64000b20, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007ffb577ed83a in ?? () from /usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#2  0x00007ffb577ed3e1 in avahi_simple_poll_run () from /usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#3  0x00007ffb577ed5b8 in avahi_simple_poll_iterate () from /usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#4  0x00007ffb577ed7d3 in avahi_simple_poll_loop () from /usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#5  0x00007ffb577ed897 in ?? () from /usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#6  0x00007ffb89ddf6db in start_thread (arg=0x7ffb6b122700) at pthread_create.c:463
        pd = 0x7ffb6b122700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140717809870592, 4260862723765981824, 140717809867904, 0, 140717626058272, 140717904832704, -4262808546753228160, -4263022456353959296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#7  0x00007ffb8a38a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 5 (Thread 0x7ffb73923700 (LWP 8041)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x00007ffb8cd61f2a in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007ffb8ccef4f1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007ffb8ccefaac in g_async_queue_timeout_pop () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007ffb8cd448ae in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007ffb8cd43e05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#6  0x00007ffb89ddf6db in start_thread (arg=0x7ffb73923700) at pthread_create.c:463
        pd = 0x7ffb73923700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140717952481024, 4260862723765981824, 140717952478336, 0, 94675189699040, 140722193510912, -4262860224336604544, -4263022456353959296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#7  0x00007ffb8a38a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 4 (Thread 0x7ffb80bd6700 (LWP 7979)):
#0  0x00007ffb8a37dbf9 in __GI___poll (fds=0x7ffb6c005200, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007ffb8cd1c439 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007ffb8cd1c7d2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007ffb8b8c4e16 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007ffb8cd43e05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007ffb89ddf6db in start_thread (arg=0x7ffb80bd6700) at pthread_create.c:463
        pd = 0x7ffb80bd6700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140718173415168, 4260862723765981824, 140718173412480, 0, 94675188027168, 140718190196864, -4263042525834096000, -4263022456353959296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#6  0x00007ffb8a38a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 3 (Thread 0x7ffb813d7700 (LWP 7977)):
#0  0x00007ffb8a37dbf9 in __GI___poll (fds=0x7ffb7c007cf0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007ffb8cd1c439 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007ffb8cd1c54c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007ffb8cd1c591 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007ffb8cd43e05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007ffb89ddf6db in start_thread (arg=0x7ffb813d7700) at pthread_create.c:463
        pd = 0x7ffb813d7700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140718181807872, 4260862723765981824, 140718181805184, 0, 94675188027008, 140718190196480, -4263041426859339136, -4263022456353959296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#6  0x00007ffb8a38a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 2 (Thread 0x7ffb81bd8700 (LWP 7976)):
#0  0x00007ffb8a37dbf9 in __GI___poll (fds=0x561b48f40970, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007ffb8cd1c439 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007ffb8cd1c54c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007ffb81be036d in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#4  0x00007ffb8cd43e05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007ffb89ddf6db in start_thread (arg=0x7ffb81bd8700) at pthread_create.c:463
        pd = 0x7ffb81bd8700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140718190200576, 4260862723765981824, 140718190197888, 0, 94675188024560, 140722193519360, -4263040327884582272, -4263022456353959296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#6  0x00007ffb8a38a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 1 (Thread 0x7ffb70bb4700 (LWP 8053)):
#0  0x00007ffb702a214c in make_cache_block () from /usr/lib/x86_64-linux-gnu/sane/libsane-brother4.so.1
No symbol table info available.
#1  0x00007ffb702a2ce1 in read_scanned_data () from /usr/lib/x86_64-linux-gnu/sane/libsane-brother4.so.1
No symbol table info available.
#2  0x00007ffb7029b469 in PageScan () from /usr/lib/x86_64-linux-gnu/sane/libsane-brother4.so.1
No symbol table info available.
#3  0x00007ffb702ab9f4 in sane_brother4_read () from /usr/lib/x86_64-linux-gnu/sane/libsane-brother4.so.1
No symbol table info available.
#4  0x0000561b4834e710 in ?? ()
No symbol table info available.
#5  0x00007ffb8cd43e05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#6  0x00007ffb89ddf6db in start_thread (arg=0x7ffb70bb4700) at pthread_create.c:463
        pd = 0x7ffb70bb4700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140717904840448, 4260862723765981824, 140717904837760, 0, 94675192965760, 140722193519504, -4262866624374746496, -4263022456353959296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#7  0x00007ffb8a38a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.