.
Thread 3 (Thread 2192):
#0  0x00007fb795ffddf8 in epoll_wait () from /lib/libc.so.6
No symbol table info available.
#1  0x00007fb79764e71b in ?? () from /usr/lib/libevent-1.4.so.2
No symbol table info available.
#2  0x00007fb797641ded in event_base_loop () from /usr/lib/libevent-1.4.so.2
No symbol table info available.
#3  0x000000000045bb3d in ?? ()
No symbol table info available.
#4  0x00007fb797204a04 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#5  0x00007fb795ffd7bd in clone () from /lib/libc.so.6
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 3031):
#0  0x00007fb795fc1ed1 in nanosleep () from /lib/libc.so.6
No symbol table info available.
#1  0x00007fb795ff6b64 in usleep () from /lib/libc.so.6
No symbol table info available.
#2  0x000000000044de9d in tr_sessionClose ()
No symbol table info available.
#3  0x0000000000427f07 in ?? ()
No symbol table info available.
#4  0x00007fb796d55b34 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fb797204a04 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#6  0x00007fb795ffd7bd in clone () from /lib/libc.so.6
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 2191):
#0  0x00007fb795f514b5 in raise () from /lib/libc.so.6
No symbol table info available.
#1  0x00007fb795f54f50 in abort () from /lib/libc.so.6
No symbol table info available.
#2  0x00007fb795f4a481 in __assert_fail () from /lib/libc.so.6
No symbol table info available.
#3  0x000000000044b8eb in tr_torrentNext ()
No symbol table info available.
#4  0x000000000045285b in tr_torrentFindFromId ()
No symbol table info available.
#5  0x0000000000425b82 in ?? ()
No symbol table info available.
#6  0x0000000000426809 in ?? ()
No symbol table info available.
#7  0x00007fb797f83d96 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#8  0x00007fb796d2d2cb in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#9  0x00007fb796d2cbbe in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#10 0x00007fb796d30588 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#11 0x00007fb796d309e5 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#12 0x00007fb798372df7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#13 0x000000000042963b in main ()
No symbol table info available.