[New LWP 25560]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007ffacf12598c in __lll_lock_wait () from /lib64/libpthread.so.0
#0  0x00007ffacf12598c in __lll_lock_wait () from /lib64/libpthread.so.0
#1  0x00007ffacf11d75d in pthread_mutex_lock () from /lib64/libpthread.so.0
#2  0x00007ffacf8c5604 in snd_pcm_drop () from /usr/lib64/libasound.so.2
#3  0x00005564cebd8468 in acntl ()
#4  0x00005564ceb71f1a in safe_exit ()
#5  <signal handler called>
#6  0x00007ffacf1218f4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#7  0x00007ffac535d3f8 in pa_threaded_mainloop_wait () from /usr/lib64/libpulse.so.0
#8  0x00007ffac43cee44 in pulse_wait_operation (p=0x5564cf672af0, o=o@entry=0x7ffab8002e80) at /usr/src/debug/media-plugins/alsa-plugins-1.1.1-r1/alsa-plugins-1.1.1/pulse/pulse.c:72
#9  0x00007ffac43cddb5 in pulse_start (io=<optimized out>) at /usr/src/debug/media-plugins/alsa-plugins-1.1.1-r1/alsa-plugins-1.1.1/pulse/pcm_pulse.c:230
#10 0x00007ffacf9051b5 in snd_pcm_ioplug_start () from /usr/lib64/libasound.so.2
#11 0x00007ffacf8c9b35 in snd1_pcm_write_areas () from /usr/lib64/libasound.so.2
#12 0x00007ffacf905e78 in snd_pcm_ioplug_writei () from /usr/lib64/libasound.so.2
#13 0x00005564cebd85a9 in output_data ()
#14 0x00005564ceb6f89a in aq_output_data ()
#15 0x00005564ceb6f8e0 in aq_fill_one ()
#16 0x00005564ceb70634 in aq_add ()
#17 0x00005564ceb9d6fc in compute_data.part ()
#18 0x00005564ceb9e2b7 in play_event ()
#19 0x00005564cec00249 in ctl_pass_playing_list ()
#20 0x00005564ceb6e705 in main ()