.
Thread 6 (Thread 0x7f3eb72c9700 (LWP 4711)):
#0  0x00007f3ec14abdc3 in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f3ebc3c8f26 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f3ebc3c9054 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f3ebcc6b93f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
No symbol table info available.
#4  0x00007f3ebb64a3ae in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
No symbol table info available.
#5  0x00007f3ebcc3b202 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
No symbol table info available.
#6  0x00007f3ebcc3b457 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
No symbol table info available.
#7  0x00007f3ebcc404e7 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
No symbol table info available.
#8  0x00007f3ebd33611e in ?? () from /usr/lib/vlc/plugins/gui/libqt4_plugin.so
No symbol table info available.
#9  0x00007f3ec198de9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#10 0x00007f3ec14b777d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#11 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 5 (Thread 0x7f3e9e8ba700 (LWP 4713)):
#0  0x00007f3ec14abdc3 in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f3ebc3c8f26 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f3ebc3c938a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f3ea5fa1e46 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007f3ebc3ea5c5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f3ec198de9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f3ec14b777d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 4 (Thread 0x7f3e9f0bb700 (LWP 4712)):
#0  0x00007f3ec19920fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x00007f3ebc404575 in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f3ebc39f1ee in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f3ebc39f7fe in g_async_queue_timed_pop () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f3ebc3ead57 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f3ebc3ea5c5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#6  0x00007f3ec198de9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00007f3ec14b777d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7f3ec2255700 (LWP 4709)):
#0  0x00007f3ec1991d84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x00007f3ec1bd0230 in ?? () from /usr/lib/libvlccore.so.5
No symbol table info available.
#2  0x00007f3ec198de9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#3  0x00007f3ec14b777d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#4  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f3ec229c700 (LWP 4375)):
#0  0x00007f3ec19959f7 in do_sigwait () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x00007f3ec1995a79 in sigwait () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#2  0x0000000000401528 in ?? ()
No symbol table info available.
#3  0x00007f3ec13e876d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#4  0x00000000004015ed in ?? ()
No symbol table info available.
#5  0x00007fff71dcb408 in ?? ()
No symbol table info available.
#6  0x000000000000001c in ?? ()
No symbol table info available.
#7  0x0000000000000002 in ?? ()
No symbol table info available.
#8  0x00007fff71dcb9f4 in ?? ()
No symbol table info available.
#9  0x00007fff71dcba01 in ?? ()
No symbol table info available.
#10 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f3eb41f9700 (LWP 4715)):
#0  0x00007f3eb81166e5 in dvdnav_describe_title_chapters () from /usr/lib/libdvdnav.so.4
No symbol table info available.
#1  0x00007f3eb8643f0d in ?? () from /usr/lib/vlc/plugins/access/libdvdnav_plugin.so
No symbol table info available.
#2  0x00007f3ec1c285ce in vlc_module_load () from /usr/lib/libvlccore.so.5
No symbol table info available.
#3  0x00007f3ec1be6eb8 in ?? () from /usr/lib/libvlccore.so.5
No symbol table info available.
#4  0x00007f3ec1bf3af9 in ?? () from /usr/lib/libvlccore.so.5
No symbol table info available.
#5  0x00007f3ec1bf4adf in ?? () from /usr/lib/libvlccore.so.5
No symbol table info available.
#6  0x00007f3ec1bf81f5 in ?? () from /usr/lib/libvlccore.so.5
No symbol table info available.
#7  0x00007f3ec198de9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f3ec14b777d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#9  0x0000000000000000 in ?? ()
No symbol table info available.