(gdb) thr app all bt

Thread 7 (Thread 0x7f68e27fa700 (LWP 32571)):
#0  __lll_lock_wait_private ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f68e3ab0f75 in _L_lock_24 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007f68e3ab0f56 in __flockfile (stream=stream@entry=0x7f68e3898880)
    at ../nptl/sysdeps/pthread/flockfile.c:30
#3  0x00007f68e44270f0 in PrintColorMsg (ap=0x7f68e27f9cf8,
    format=0x7f68e444dd78 "incoming request - stopping current input",
    p_item=0x7f68e27f9d10, type=3, d=<optimized out>)
    at ../../src/misc/messages.c:259
#4  vlc_vaLog (obj=<optimized out>, type=3, module=<optimized out>,
    format=0x7f68e444dd78 "incoming request - stopping current input",
    args=args@entry=0x7f68e27f9d78) at ../../src/misc/messages.c:215
#5  0x00007f68e442728d in vlc_Log (obj=obj@entry=0x9a74f8, type=type@entry=3,
    module=module@entry=0x7f68e445a0ea "main",
    format=format@entry=0x7f68e444dd78 "incoming request - stopping current input") at ../../src/misc/messages.c:111
#6  0x00007f68e43bb8f9 in LoopInput (p_playlist=0x9a74f8)
    at ../../src/playlist/thread.c:466
#7  Thread (data=0x9a74f8) at ../../src/playlist/thread.c:586
#8  0x00007f68e3aa8b50 in start_thread (arg=<optimized out>)
---Type <return> to continue, or q <return> to quit---
    at pthread_create.c:304
#9  0x00007f68e35ef70d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f68e1fb6700 (LWP 32573)):
#0  0x00007f68e35e4ac3 in *__GI___poll (fds=<optimized out>,
    fds@entry=0x7f68e1fb5da0, nfds=<optimized out>, nfds@entry=2,
    timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f68e23ec868 in Run (p_intf=0x98c4d8)
    at ../../../../modules/control/dbus/dbus.c:788
#2  0x00007f68e43b9fea in RunInterface (p_this=<optimized out>)
    at ../../src/interface/interface.c:203
#3  0x00007f68e3aa8b50 in start_thread (arg=<optimized out>)
    at pthread_create.c:304
#4  0x00007f68e35ef70d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f68e26f9700 (LWP 32575)):
#0  __lll_lock_wait_private ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f68e3ab0f75 in _L_lock_24 ()
---Type <return> to continue, or q <return> to quit---
   from /lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007f68e3ab0f56 in __flockfile (stream=stream@entry=0x7f68e3898880)
    at ../nptl/sysdeps/pthread/flockfile.c:30
#3  0x00007f68e44270f0 in PrintColorMsg (ap=0x7f68e26f78e8,
    format=0x7f68e444dcd4 "exiting", p_item=0x7f68e26f7900, type=3,
    d=<optimized out>) at ../../src/misc/messages.c:259
#4  vlc_vaLog (obj=<optimized out>, type=3, module=<optimized out>,
    format=0x7f68e444dcd4 "exiting", args=args@entry=0x7f68e26f7968)
    at ../../src/misc/messages.c:215
#5  0x00007f68e442728d in vlc_Log (obj=obj@entry=0x8e43f8, type=type@entry=3,
    module=module@entry=0x7f68e445a0ea "main",
    format=format@entry=0x7f68e444dcd4 "exiting")
    at ../../src/misc/messages.c:111
#6  0x00007f68e441da82 in libvlc_Quit (p_libvlc=0x8e43f8)
    at ../../src/misc/exit.c:65
#7  0x00007f68de590ccf in DialogsProvider::qt_static_metacall (_o=0xb8fea0,
    _c=<optimized out>, _id=43, _a=0x7f68e26f7b40)
    at dialogs_provider.moc.cpp:167
#8  0x00007f68dd0db54f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f68de4946e9 in MainInterface::closeEvent (this=<optimized out>,
    e=0x7f68e26f8300) at ../../../../modules/gui/qt4/main_interface.cpp:1340
#10 0x00007f68dd64a1c2 in QWidget::event(QEvent*) ()
---Type <return> to continue, or q <return> to quit---
   from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#11 0x00007f68dda0e23b in QMainWindow::event(QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#12 0x00007f68dd5fa70c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
    () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#13 0x00007f68dd5feb8a in QApplication::notify(QObject*, QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#14 0x00007f68dd0c5b5e in QCoreApplication::notifyInternal(QObject*, QEvent*)
    () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#15 0x00007f68dd643c61 in QWidgetPrivate::close_helper(QWidgetPrivate::CloseMode) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#16 0x00007f68dd676a7f in QApplication::x11ClientMessage(QWidget*, _XEvent*, bool) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#17 0x00007f68dd6752a2 in QApplication::x11ProcessEvent(_XEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#18 0x00007f68dd69bbc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#19 0x00007f68dc62b205 in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f68dc62b538 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f68dc62b5f4 in g_main_context_iteration ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f68dd0f4276 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
---Type <return> to continue, or q <return> to quit---
#23 0x00007f68dd69b83e in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#24 0x00007f68dd0c48af in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#25 0x00007f68dd0c4b38 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#26 0x00007f68dd0c9cf8 in QCoreApplication::exec() ()
   from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#27 0x00007f68de48660f in Thread (obj=0x9add98)
    at ../../../../modules/gui/qt4/qt4.cpp:550
#28 0x00007f68e3aa8b50 in start_thread (arg=<optimized out>)
    at pthread_create.c:304
#29 0x00007f68e35ef70d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#30 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f68dc11a700 (LWP 32576)):
#0  __lll_lock_wait ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
#1  0x00007f68e3aab339 in _L_lock_926 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007f68e3aab15b in __pthread_mutex_lock (
    mutex=mutex@entry=0x7f68d8001e90) at pthread_mutex_lock.c:61
#3  0x00007f68e44307c9 in vlc_mutex_lock (p_mutex=p_mutex@entry=0x7f68d8001e90)
---Type <return> to continue, or q <return> to quit---
    at ../../src/posix/thread.c:300
#4  0x00007f68e43d22f9 in input_DecoderHasFormatChanged (
    p_dec=<optimized out>, p_fmt=p_fmt@entry=0x7f68dc119960,
    pp_meta=pp_meta@entry=0x7f68dc119958) at ../../src/input/decoder.c:634
#5  0x00007f68e43d74bb in EsOutSend (out=0x7f68d8c0e240, es=0x7f68d8c05be0,
    p_block=0x7f68d801dce0) at ../../src/input/es_out.c:1965
#6  0x00007f68e43dbd5f in Send (p_out=0xbb7d20, p_es=0x7f68d8c17660,
    p_block=0x7f68d801dce0) at ../../src/input/es_out_timeshift.c:422
#7  0x00007f68def40b59 in es_out_Send (p_block=0x7f68d801dce0,
    id=<optimized out>, out=<optimized out>)
    at ../../../../include/vlc_es_out.h:121
#8  BlockDecode (p_demux=p_demux@entry=0x99ab08, block=0x0,
    simpleblock=0x7f68d8c18360, i_pts=4031976, i_duration=<optimized out>,
    f_mandatory=true) at ../../../../modules/demux/mkv/mkv.cpp:643
#9  0x00007f68def4121a in Demux (p_demux=0x99ab08)
    at ../../../../modules/demux/mkv/mkv.cpp:753
#10 0x00007f68e43e3da3 in demux_Demux (p_demux=0x99ab08)
    at ../../src/input/demux.h:44
#11 MainLoopDemux (i_start_mdate=6841882042,
    pb_demux_polled=<synthetic pointer>, pb_changed=<synthetic pointer>,
    p_input=0x7f68d8c15ce8) at ../../src/input/input.c:580
#12 MainLoop (p_input=p_input@entry=0x7f68d8c15ce8,
    b_interactive=b_interactive@entry=true) at ../../src/input/input.c:751
---Type <return> to continue, or q <return> to quit---
#13 0x00007f68e43e4d85 in Run (obj=0x7f68d8c15ce8)
    at ../../src/input/input.c:542
#14 0x00007f68e3aa8b50 in start_thread (arg=<optimized out>)
    at pthread_create.c:304
#15 0x00007f68e35ef70d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#16 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f68c8467700 (LWP 32577)):
#0  0x00007f68e35e379d in write () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f68e3588c53 in _IO_new_file_write (f=0x7f68e3898880,
    data=0x7f68c8464380, n=46) at fileops.c:1276
#2  0x00007f68e35888ca in new_do_write (fp=0x7f68e3898880,
    data=0x7f68c8464380 "buffer way too early (-160000), clearing queue",
    to_do=46) at fileops.c:530
#3  0x00007f68e3588bbe in _IO_new_file_xsputn (f=0x7f68e3898880,
    data=<optimized out>, n=46) at fileops.c:1370
#4  0x00007f68e355eaf1 in buffered_vfprintf (s=0x7f68e3898880,
    format=<optimized out>, args=<optimized out>) at vfprintf.c:2310
#5  0x00007f68e35596be in _IO_vfprintf_internal (s=0x7f68e3898880,
    format=0x7f68e4454118 "buffer way too early (%ld), clearing queue",
    ap=0x7f68c8466b88) at vfprintf.c:1309
#6  0x00007f68e3602ab7 in ___vfprintf_chk (fp=0x7f68e3898880,
---Type <return> to continue, or q <return> to quit---
    flag=flag@entry=1, format=0x7f68c8467700 "", ap=0x2e) at vfprintf_chk.c:35
#7  0x00007f68e440f6e0 in vfprintf (__ap=<optimized out>,
    __fmt=<optimized out>, __stream=<optimized out>)
    at /usr/include/x86_64-linux-gnu/bits/stdio2.h:128
#8  utf8_vfprintf (stream=stream@entry=0x7f68e3898880,
    fmt=fmt@entry=0x7f68e4454118 "buffer way too early (%ld), clearing queue",
    ap=ap@entry=0x7f68c8466b88) at ../../src/text/unicode.c:57
#9  0x00007f68e4427175 in PrintColorMsg (ap=0x7f68c8466b88,
    format=0x7f68e4454118 "buffer way too early (%ld), clearing queue",
    p_item=0x7f68c8466ba0, type=2, d=<optimized out>)
    at ../../src/misc/messages.c:265
#10 vlc_vaLog (obj=<optimized out>, type=2, module=<optimized out>,
    format=0x7f68e4454118 "buffer way too early (%ld), clearing queue",
    args=args@entry=0x7f68c8466c08) at ../../src/misc/messages.c:215
#11 0x00007f68e442728d in vlc_Log (obj=obj@entry=0x18449c8, type=type@entry=2,
    module=module@entry=0x7f68e445a0ea "main",
    format=format@entry=0x7f68e4454118 "buffer way too early (%ld), clearing queue") at ../../src/misc/messages.c:111
#12 0x00007f68e440649d in aout_InputPlay (p_aout=p_aout@entry=0x18449c8,
    p_input=0x184e510, p_buffer=p_buffer@entry=0x18a3ee0,
    i_input_rate=i_input_rate@entry=1000, date=date@entry=0x1844aa8)
    at ../../src/audio_output/input.c:396
#13 0x00007f68e4404861 in aout_DecPlay (p_aout=p_aout@entry=0x18449c8,
---Type <return> to continue, or q <return> to quit---
    p_buffer=p_buffer@entry=0x18a3ee0, i_input_rate=1000)
    at ../../src/audio_output/dec.c:280
#14 0x00007f68e43cf18f in DecoderPlayAudio (pi_lost_sum=<synthetic pointer>,
    pi_played_sum=<synthetic pointer>, p_audio=0x18a3ee0, p_dec=0x7f68d80016f8)
    at ../../src/input/decoder.c:1235
#15 DecoderDecodeAudio (p_dec=p_dec@entry=0x7f68d80016f8,
    p_block=0x7f68c8464380) at ../../src/input/decoder.c:1292
#16 0x00007f68e43cfd08 in DecoderProcessAudio (b_flush=false,
    p_block=0x7f68d8c107b0, p_dec=0x7f68d80016f8)
    at ../../src/input/decoder.c:1893
#17 DecoderProcess (p_dec=p_dec@entry=0x7f68d80016f8,
    p_block=p_block@entry=0x7f68d8c107b0) at ../../src/input/decoder.c:2014
#18 0x00007f68e43cfe2c in DecoderThread (p_data=0x7f68d80016f8)
    at ../../src/input/decoder.c:939
#19 0x00007f68e3aa8b50 in start_thread (arg=<optimized out>)
    at pthread_create.c:304
#20 0x00007f68e35ef70d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#21 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f68c69d8700 (LWP 32578)):
#0  __lll_lock_wait_private ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
---Type <return> to continue, or q <return> to quit---
#1  0x00007f68e3ab0f75 in _L_lock_24 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007f68e3ab0f56 in __flockfile (stream=stream@entry=0x7f68e3898880)
    at ../nptl/sysdeps/pthread/flockfile.c:30
#3  0x00007f68e44270f0 in PrintColorMsg (ap=0x7f68c69d7978,
    format=0x7f68c8165728 "deferring start (%ld us)", p_item=0x7f68c69d7990,
    type=3, d=<optimized out>) at ../../src/misc/messages.c:259
#4  vlc_vaLog (obj=<optimized out>, type=3, module=<optimized out>,
    format=0x7f68c8165728 "deferring start (%ld us)",
    args=args@entry=0x7f68c69d79f8) at ../../src/misc/messages.c:215
#5  0x00007f68e442728d in vlc_Log (obj=obj@entry=0x18449c8, type=type@entry=3,
    module=module@entry=0x7f68c816541d "pulse",
    format=format@entry=0x7f68c8165728 "deferring start (%ld us)")
    at ../../src/misc/messages.c:111
#6  0x00007f68c8163db1 in stream_resync (aout=0x18449c8, s=0x185a5c0)
    at ../../../modules/audio_output/pulse.c:264
#7  0x00007f68c7f40131 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#8  0x00007f68c7add5f6 in ?? ()
   from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-2.0.so
#9  0x00007f68c7add97b in pa_pdispatch_run ()
   from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-2.0.so
#10 0x00007f68c7f270dd in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#11 0x00007f68c7ae192b in ?? ()
---Type <return> to continue, or q <return> to quit---
   from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-2.0.so
#12 0x00007f68c7f3a654 in pa_mainloop_dispatch ()
   from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#13 0x00007f68c7f3aa05 in pa_mainloop_iterate ()
   from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#14 0x00007f68c7f3aab0 in pa_mainloop_run ()
   from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#15 0x00007f68c7f48def in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#16 0x00007f68c7aef443 in ?? ()
   from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-2.0.so
#17 0x00007f68e3aa8b50 in start_thread (arg=<optimized out>)
    at pthread_create.c:304
#18 0x00007f68e35ef70d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#19 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f68e4a93700 (LWP 32570)):
#0  do_sigwait (set=0x7fffc69a0f10, sig=0x7fffc69a0f04)
    at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:65
#1  0x00007f68e3ab0df7 in __sigwait (set=<optimized out>,
    set@entry=0x7fffc69a0f10, sig=<optimized out>, sig@entry=0x7fffc69a0f04)
    at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/si---Type <return> to continue, or q <return> to quit---
gwait.c:100
#2  0x00000000004014ce in main (i_argc=<optimized out>,
    ppsz_argv=0x7fffc69a1140) at ../../bin/vlc.c:224