[pulseaudio-tickets] [PulseAudio] #195: possible deadlocks when running pulseaudio with --high-priority=1

[PulseAudio]

#195: possible deadlocks when running pulseaudio with --high-priority=1
--------------------------+-------------------------------------------------
  Reporter:  kaivehmanen  |       Owner:  lennart   
      Type:  defect       |      Status:  new       
  Priority:  normal       |   Milestone:            
 Component:  core         |    Severity:  normal    
Resolution:               |    Keywords:  SCHED_FIFO
--------------------------+-------------------------------------------------
Comment (by kaivehmanen):

 {{{
 Some backtraces attached (sorry, debugging symbols lacking from many
 libraries):

 chrt info
 --cut--
 pid 7280's current scheduling policy: SCHED_OTHER
 pid 7280's current scheduling priority: 0
 pid 7287's current scheduling policy: SCHED_FIFO
 pid 7287's current scheduling priority: 1
 --cut--

 thread 1
 --cut--
 Using host libthread_db library "/lib/libthread_db.so.1".
 Attaching to program: /usr/bin/pulseaudio, process 7280 Reading symbols
 from /lib/libpthread.so.0...(no debugging symbols found)...done.
 Loaded symbols for /lib/libpthread.so.0
 Reading symbols from /usr/lib/libpulsecore.so.4...(no debugging symbols
 found)...done.
 Loaded symbols for /usr/lib/libpulsecore.so.4 Reading symbols from
 /usr/lib/libsndfile.so.1...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/libsndfile.so.1 Reading symbols from
 /usr/lib/liboil-0.3.so.0...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/liboil-0.3.so.0 Reading symbols from
 /usr/lib/libdbus-1.so.3...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/libdbus-1.so.3 Reading symbols from
 /lib/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib/librt.so.1
 Reading symbols from /lib/libdl.so.2...
 (no debugging symbols found)...done.
 Loaded symbols for /lib/libdl.so.2
 Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib/libm.so.6
 Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib/libc.so.6
 Reading symbols from /lib/ld-linux.so.3...
 (no debugging symbols found)...done.
 Loaded symbols for /lib/ld-linux.so.3
 Reading symbols from /lib/libnss_files.so.2...(no debugging symbols
 found)...done.
 Loaded symbols for /lib/libnss_files.so.2 Reading symbols from
 /usr/lib/pulse-0.9/modules/module-alsa-sink.so...(no debugging symbols
 found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/module-alsa-sink.so
 Reading symbols from /usr/lib/libasound.so.2...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/libasound.so.2 Reading symbols from
 /usr/lib/pulse-0.9/modules/libalsa-util.so...(no debugging symbols
 found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libalsa-util.so
 Reading symbols from /usr/lib/pulse-0.9/modules/module-native-protocol-
 unix.so...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/module-native-protocol-
 unix.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libprotocol-native.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libprotocol-native.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libsocket-server.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libsocket-server.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libsocket-util.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libsocket-util.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libpstream.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libpstream.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libpstream-util.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libpstream-util.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libpdispatch.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libpdispatch.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libtagstruct.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libtagstruct.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libauthkey.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libauthkey.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libauthkey-prop.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libauthkey-prop.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libstrlist.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libstrlist.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libiochannel.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libiochannel.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libipacl.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libipacl.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libpacket.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libpacket.so
 Reading symbols from /usr/lib/pulse-0.9/modules/module-rescue-
 streams.so...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/module-rescue-streams.so
 Reading symbols from /usr/lib/pulse-0.9/modules/module-suspend-on-
 idle.so...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/module-suspend-on-idle.so
 0x4003042c in sem_wait
     () from /lib/libpthread.so.0
 (gdb) bt
 #0  0x4003042c in sem_wait () from /lib/libpthread.so.0
 #1  0x40091058 in pa_semaphore_wait () from /usr/lib/libpulsecore.so.4
 #2  0x4008b248 in pa_asyncmsgq_send () from /usr/lib/libpulsecore.so.4
 #3  0x40e80a44 in ?? () from /usr/lib/pulse-0.9/modules/libprotocol-
 native.so

 --cut--

 thread 2 (SCHED_FIFO thread)
 --cut--
 warning: process 7287 is a cloned process Reading symbols from
 /lib/libpthread.so.0...(no debugging symbols found)...done.
 Loaded symbols for /lib/libpthread.so.0
 Reading symbols from /usr/lib/libpulsecore.so.4...(no debugging symbols
 found)...done.
 Loaded symbols for /usr/lib/libpulsecore.so.4 Reading symbols from
 /usr/lib/libsndfile.so.1...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/libsndfile.so.1 Reading symbols from
 /usr/lib/liboil-0.3.so.0...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/liboil-0.3.so.0 Reading symbols from
 /usr/lib/libdbus-1.so.3...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/libdbus-1.so.3 Reading symbols from
 /lib/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib/librt.so.1
 Reading symbols from /lib/libdl.so.2...
 (no debugging symbols found)...done.
 Loaded symbols for /lib/libdl.so.2
 Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib/libm.so.6
 Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib/libc.so.6
 Reading symbols from /lib/ld-linux.so.3...
 (no debugging symbols found)...done.
 Loaded symbols for /lib/ld-linux.so.3
 Reading symbols from /lib/libnss_files.so.2...(no debugging symbols
 found)...done.
 Loaded symbols for /lib/libnss_files.so.2 Reading symbols from
 /usr/lib/pulse-0.9/modules/module-alsa-sink.so...(no debugging symbols
 found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/module-alsa-sink.so
 Reading symbols from /usr/lib/libasound.so.2...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/libasound.so.2 Reading symbols from
 /usr/lib/pulse-0.9/modules/libalsa-util.so...(no debugging symbols
 found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libalsa-util.so
 Reading symbols from /usr/lib/pulse-0.9/modules/module-native-protocol-
 unix.so...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/module-native-protocol-
 unix.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libprotocol-native.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libprotocol-native.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libsocket-server.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libsocket-server.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libsocket-util.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libsocket-util.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libpstream.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libpstream.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libpstream-util.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libpstream-util.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libpdispatch.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libpdispatch.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libtagstruct.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libtagstruct.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libauthkey.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libauthkey.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libauthkey-prop.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libauthkey-prop.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libstrlist.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libstrlist.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libiochannel.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libiochannel.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libipacl.so...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libipacl.so
 Reading symbols from /usr/lib/pulse-0.9/modules/libpacket.so...
 (no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/libpacket.so
 Reading symbols from /usr/lib/pulse-0.9/modules/module-rescue-
 streams.so...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/module-rescue-streams.so
 Reading symbols from /usr/lib/pulse-0.9/modules/module-suspend-on-
 idle.so...(no debugging symbols found)...done.
 Loaded symbols for /usr/lib/pulse-0.9/modules/module-suspend-on-idle.so

 0x4002b71c in pthread_mutex_lock () from /lib/libpthread.so.0
 (gdb) bt
 #0  0x4002b71c in pthread_mutex_lock () from /lib/libpthread.so.0
 #1  0x40090428 in pa_mutex_lock () from /usr/lib/libpulsecore.so.4
 #2  0x4006a0a8 in pa_memblock_unref () from /usr/lib/libpulsecore.so.4
 #3  0x400803ec in pa_sink_input_peek () from /usr/lib/libpulsecore.so.4
 #4  0x4007b114 in ?? () from /usr/lib/libpulsecore.so.4
 --cut--
 }}}

-- 
Ticket URL: <http://www.pulseaudio.org/ticket/195#comment:1>
PulseAudio <http://pulseaudio.org/>
The PulseAudio Sound Server