Bug#598849: ardour: Ardour Segfaults while using Behringer BCF2000 with mackieprotocol

Mon Oct 4 15:16:14 UTC 2010

Op Mon, 4 Oct 2010 11:14:44 +0200
schreef Adrian Knoth <adi at drcomp.erfurt.thur.de>:

> On Sat, Oct 02, 2010 at 06:17:31PM +0200, Stijn Declercq wrote:
> 
> > Hi,
> 
> Hi!
> 
> > When I want to use my Behringer BCF2000 Ardour crashed with
> > segmentationfault.  It only crashes when i'm using the
> > mackie-protocol in Ardour
> 
> 
> > I've run Ardour with strace, and i've got this message.
> 
> Could you rerun your crashing setup from gdb and provide us with a
> backtrace?
> 
> In a terminal, go like this:
> 
>   $ export GTK_PATH=/usr/lib/ardour2${GTK_PATH:+:$GTK_PATH}
>   $ export
> LD_LIBRARY_PATH=/usr/lib/ardour2${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
> $ gdb /usr/lib/ardour2/ardour-2.8.11 (gdb) run
> 
> When it crashes, say "thread apply all bt", that's the output we need.

This is the output of gdb:

(gdb) thread apply all bt

Thread 18 (Thread 0x7fffc20cf830 (LWP 30346)):
#0  0x00007ffff12b3f4f in snd_seq_event_input () from /usr/lib/libasound.so.2
#1  0x00007ffff1d1c20d in MIDI::ALSA_SequencerMidiPort::read (this=0xe33dd0, buf=0x7fffc20cea30 "\341 b", max=512)
    at libs/midi++2/alsa_sequencer_midiport.cc:145
#2  0x00007fffc20f2e77 in Mackie::SurfacePort::read (this=0x229c0a0) at libs/surfaces/mackie/surface_port.cc:93
#3  0x00007fffc20fbff2 in MackieControlProtocol::read_ports (this=0x229bc40) at libs/surfaces/mackie/mackie_control_protocol_poll.cc:143
#4  0x00007fffc20fc63c in MackieControlProtocol::monitor_work (this=0x229bc40) at libs/surfaces/mackie/mackie_control_protocol_poll.cc:56
#5  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
#6  0x00007fffef0e802d in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 16 (Thread 0x7fffc80f9830 (LWP 30344)):
#0  0x00007ffff12b3f4f in snd_seq_event_input () from /usr/lib/libasound.so.2
#1  0x00007ffff1d1c20d in MIDI::ALSA_SequencerMidiPort::read (this=0xe09d40, buf=0x7fffc80f89b0 "\263e{d\024\006", max=512)
    at libs/midi++2/alsa_sequencer_midiport.cc:145
#2  0x00007ffff7b1dffa in ARDOUR::Session::midi_read (this=<value optimized out>, port=0xe09d40) at libs/ardour/session_midi.cc:431
#3  0x00007ffff7b1f005 in ARDOUR::Session::midi_thread_work (this=0x19ed560) at libs/ardour/session_midi.cc:1340
#4  0x00007ffff7b1f521 in ARDOUR::Session::_midi_thread_work (arg=0x19ed560) at libs/ardour/session_midi.cc:1138
#5  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
#6  0x00007fffef0e802d in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 15 (Thread 0x7fffc8174830 (LWP 30343)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007fffef0dd113 in poll () from /lib/libc.so.6
#1  0x00007ffff7ad9944 in ARDOUR::Session::butler_thread_work (this=0x19ed560) at libs/ardour/session_butler.cc:179
#2  0x00007ffff7adae1b in ARDOUR::Session::_butler_thread_work (arg=0x19ed560) at libs/ardour/session_butler.cc:159
#3  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
#4  0x00007fffef0e802d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7fffc8421830 (LWP 30342)):
#0  0x00007ffff27e37dd in nanosleep () from /lib/libpthread.so.0
#1  0x00007ffff6584068 in g_usleep () from /lib/libglib-2.0.so.0
#2  0x00007ffff79d9b0f in ARDOUR::AudioEngine::meter_thread (this=<value optimized out>) at libs/ardour/audioengine.cc:472
#3  0x00007ffff72a9632 in ?? () from /usr/lib/libglibmm-2.4.so.1
#4  0x00007ffff65814a4 in ?? () from /lib/libglib-2.0.so.0
#5  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
#6  0x00007fffef0e802d in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7fffc8575710 (LWP 30341)):
#0  0x00007ffff27e2417 in sem_timedwait () from /lib/libpthread.so.0
#1  0x00007ffff2a197f0 in ?? () from /usr/lib/libjack.so.0
#2  0x00007ffff2a0207a in ?? () from /usr/lib/libjack.so.0
#3  0x00007ffff2a00daf in ?? () from /usr/lib/libjack.so.0
#4  0x00007ffff2a190c0 in ?? () from /usr/lib/libjack.so.0
#5  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#6  0x00007fffef0e802d in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7fffc8963710 (LWP 30340)):
#0  0x00007ffff27e30bd in read () from /lib/libpthread.so.0
#1  0x00007ffff2a1ad62 in ?? () from /usr/lib/libjack.so.0
#2  0x00007ffff2a1d647 in ?? () from /usr/lib/libjack.so.0
#3  0x00007ffff2a190c0 in ?? () from /usr/lib/libjack.so.0
#4  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
#5  0x00007fffef0e802d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7fffc89e4710 (LWP 30339)):
#0  0x00007ffff27e016c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007ffff2a1a791 in ?? () from /usr/lib/libjack.so.0
#2  0x00007ffff2a13399 in ?? () from /usr/lib/libjack.so.0
#3  0x00007ffff2a190c0 in ?? () from /usr/lib/libjack.so.0
#4  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
#5  0x00007fffef0e802d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fffe06ce710 (LWP 30332)):
#0  0x00007ffff27e016c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007ffff79c46d3 in ARDOUR::Analyser::work () at libs/ardour/analyser.cc:85
---Type <return> to continue, or q <return> to quit---
#2  0x00007ffff72a9632 in ?? () from /usr/lib/libglibmm-2.4.so.1
#3  0x00007ffff65814a4 in ?? () from /lib/libglib-2.0.so.0
#4  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
#5  0x00007fffef0e802d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fffe0ecf710 (LWP 30331)):
#0  0x00007ffff27e016c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007ffff7b506ac in peak_thread_work () at libs/ardour/source_factory.cc:65
#2  0x00007ffff72a9632 in ?? () from /usr/lib/libglibmm-2.4.so.1
#3  0x00007ffff65814a4 in ?? () from /lib/libglib-2.0.so.0
#4  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
#5  0x00007fffef0e802d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fffe16d0710 (LWP 30330)):
#0  0x00007ffff27e016c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007ffff7b506ac in peak_thread_work () at libs/ardour/source_factory.cc:65
#2  0x00007ffff72a9632 in ?? () from /usr/lib/libglibmm-2.4.so.1
#3  0x00007ffff65814a4 in ?? () from /lib/libglib-2.0.so.0
#4  0x00007ffff27db8ba in start_thread () from /lib/libpthread.so.0
#5  0x00007fffef0e802d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

---Type <return> to continue, or q <return> to quit---
Thread 1 (Thread 0x7ffff7fae7e0 (LWP 30327)):
#0  0x00007fffef0dd113 in poll () from /lib/libc.so.6
#1  0x00007ffff655bcd9 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007ffff655c485 in g_main_loop_run () from /lib/libglib-2.0.so.0
#3  0x00007ffff4dd1b77 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#4  0x00007ffff2c9e32a in Gtkmm2ext::UI::run (this=0xc037c0, old_receiver=...) at libs/gtkmm2ext/gtk_ui.cc:230
#5  0x000000000074d28e in main (argc=1, argv=0x7fffffffe5b8) at
gtk2_ardour/main.cc:398

> 
> If you cannot run ardour from gdb (it might have problems matching the
> realtime deadlines), create a core instead:
> 
>   $ ulimit -c unlimited
>   $ ardour2
>   [crash, should give you a file core.something in your CWD]
>   $ export GTK_PATH=/usr/lib/ardour2${GTK_PATH:+:$GTK_PATH}
>   $ export
> LD_LIBRARY_PATH=/usr/lib/ardour2${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
> $ gdb --core=XXX (gdb) thread apply all bt
> 
> If this doesn't work, try the first method but start jackd without
> realtime priorities.
> 
> 
> TIA
> 

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