ttaching to program: /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0, process 6468
[New LWP 6470]
[New LWP 6471]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fcb14776b7f in __GI___poll (fds=0x7fcb0403ad00, nfds=5, timeout=11)
    at ../sysdeps/unix/sysv/linux/poll.c:29
29      ../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
(gdb) thread apply all bt

Thread 3 (Thread 0x7fcb112d4700 (LWP 6471)):
#0  0x00007fcb14776b7f in __GI___poll (fds=0x55e91129cfb0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fcb148977fe in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcb14897b63 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcb14afdf16 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fcb148c052d in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fcb13b94f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007fcb1478131f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fcb11ad5700 (LWP 6470)):
#0  0x00007fcb14776b7f in __GI___poll (fds=0x55e91128bac0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fcb148977fe in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcb1489791f in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcb14897971 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fcb148c052d in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fcb13b94f27 in start_thread (arg=<optimized out>) at pthread_create.c--Type <RET> for more, q to quit, c to continue without paging--
:479
#6  0x00007fcb1478131f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fcb1282da80 (LWP 6468)):
#0  0x00007fcb14776b7f in __GI___poll (fds=0x7fcb0403ad00, nfds=5, timeout=11) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fcb148977fe in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcb14897b63 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcb15042ce5 in gtk_main () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#4  0x000055e9103f7ae6 in main ()