[Octave-bug-tracker] [bug #52996] calling audiodevinfo() results in a segfault on exit when JACK sound server is running

[anonymous]

Follow-up Comment #2, bug #52996 (project octave):

Hi Mike!

I am happy to provide some more information.
Building octave is beyond what I can do atm.

Linux kernel
address@hidden:~$ uname -a
Linux bullsquid 4.13.0-32-generic #35-Ubuntu SMP Thu Jan 25 09:13:46 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux

Ubuntu version
address@hidden:~$ lsb_release -d
Description:    Ubuntu 17.10

JACK version
address@hidden:~$ jackd --version
jackdmp 1.9.11
...
jackdmp version 1.9.11 tmpdir /dev/shm protocol 8

Octave version
address@hidden:~$ octave --version
GNU Octave, version 4.2.1

Soundcards
address@hidden:~$ aplay -l
**** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: NVidia [HDA NVidia], Gerät 3: HDMI 0 [HDMI 0]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 0: NVidia [HDA NVidia], Gerät 7: HDMI 1 [HDMI 1]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 1: USB [Scarlett 2i2 USB], Gerät 0: USB Audio [USB Audio]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0

My user is member of the "audio" group on that system.

To reproduce run 
> jackd -d alsa -d hw:USB -p 512 -r 48000 -n 10 & sleep 3 && octave-cli --eval
"audiodevinfo();" || echo '!!! BUG BUG BUG !!!'

This starts jackd in background, waits 3 seconds and then runs audiodevinfo()
with Octave (which segfaults)

My output WITH jack running:
address@hidden:~$ jackd -d alsa -d hw:USB -p 512 -r 48000 -n 10 & sleep 3 &&
octave-cli --eval "audiodevinfo();" || echo '!!! BUG BUG BUG !!!'
[1] 14880
jackdmp 1.9.11
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2014 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
no message buffer overruns
no message buffer overruns
no message buffer overruns
JACK server starting in realtime mode with priority 10
self-connect-mode is "Don't restrict self connect requests"
audio_reservation_init
Acquire audio card Audio1
creating alsa driver ... hw:USB|hw:USB|512|10|48000|0|0|nomon|swmeter|-|32bit
configuring for 48000Hz, period = 512 frames (10.7 ms), buffer = 10 periods
ALSA: final selected sample format for capture: 32bit integer little-endian
ALSA: use 10 periods for capture
ALSA: final selected sample format for playback: 32bit integer little-endian
ALSA: use 10 periods for playback
ALSA lib pcm_dsnoop.c:618:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1052:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_dmix.c:1052:(snd_pcm_dmix_open) unable to open slave
panic: Segmentation fault -- stopping myself...panic: attempted clean up
failed -- aborting...

JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = PortAudio was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
Cannot read socket fd = 11 err = Connection reset by peer
Could not read notification result
ClientNotify fails name = PortAudio notification = 18 val1 = 0 val2 = 0
Cannot write socket fd = 11 err = Broken pipe
CheckRes error
Could not write notification
ClientNotify fails name = PortAudio notification = 18 val1 = 1 val2 = 0
Cannot write socket fd = 11 err = Broken pipe
CheckRes error
Could not write notification
ClientNotify fails name = PortAudio notification = 3 val1 = 0 val2 = 0
Abgebrochen (Speicherabzug geschrieben)
!!! BUG BUG BUG !!!



My output WITHOUT jack running:
> address@hidden:~$ octave-cli --eval "audiodevinfo();" || echo '!!! BUG BUG
BUG !!!'
ALSA lib pcm_dsnoop.c:618:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1052:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_dmix.c:1052:(snd_pcm_dmix_open) unable to open slave
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for 4294967295,
skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for 4294967295,
skipping unlock


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