(gdb) bt full #0 __GI___pthread_mutex_lock (mutex=0x1b7b978) at ../nptl/pthread_mutex_lock.c:66 __PRETTY_FUNCTION__ = "__pthread_mutex_lock" type = 70014 #1 0x00007fe20bbca659 in apr_thread_mutex_lock (mutex=) at locks/unix/thread_mutex.c:92 No locals. #2 0x00007fe20bbc23d5 in apr_queue_trypop (queue=queue@entry=0x1b7b7e0, data=data@entry=0x7fe18891e250) at misc/apr_queue.c:394 rv = #3 0x00007fe20b8b7855 in switch_queue_trypop (queue=queue@entry=0x1b7b7e0, data=data@entry=0x7fe18891e250) at src/switch_apr.c:1171 No locals. #4 0x00007fe18899a951 in flush_video_queue (q=0x1b7b7e0) at mod_local_stream.c:206 pop = 0x0 #5 0x00007fe18899ceec in read_stream_thread (thread=0xffff00010007, obj=0x7fe18891e4a0) at mod_local_stream.c:588 is_open = 70014 use_fh = 0x7fe18891e4a0 olen = 960 artist = 0x0 title = 0x7fe18891e455 "1.wav" tmp_space = "\000usr\000local\000freeswitch\000sounds\000music\000iqv-default\000\064\070\060\060\060\000\061.wav", '\000' fname = 0x1b7a7b8 "" fh = {file_interface = 0x1ac9978, flags = 2061, fd = 0x0, samples = 4308481, samplerate = 48000, native_rate = 48000, channels = 1, real_channels = 2, f seekable = 1, sample_count = 197760, speed = 0, memory_pool = 0x7fe17402dc68, prebuf = 65536, interval = 0, private_info = 0x7fe17402dde0, handler = 0 sp_audio_buffer = 0x0, thresh = 0, silence_hits = 0, offset_pos = 0, samples_in = 197760, samples_out = 0, vol = 0, resampler = 0x0, buffer = 0x0, dbu pre_buffer = 0x7fe17403e620, pre_buffer_data = 0x7fe17404e6b8 "", pre_buffer_datalen = 65536, file = 0x7fe18899e3e8 "mod_local_stream.c", func = 0x7fe18899ec70 <__func__.17500> "read_stream_thread", line = 355, file_path = 0x7fe17402dda0 "/usr/local/freeswitch/sounds/music/iqv-default/48 prefix = 0x0, max_samples = 0, params = 0x0, cur_channels = 0, cur_samplerate = 0, stream_name = 0x0, modname = 0x0, mm = {samplerate = 44100, channel vw = 0, vh = 0, cbr = 0, fps = 0, source_fps = 0, vbuf = 0, vprofile = SWITCH_VIDEO_PROFILE_BASELINE, vencspd = SWITCH_VIDEO_ENCODE_SPEED_DEFAULT, t flag_mutex = 0x7fe17402dd50, duration = 0, vpos = 0} file_buf = "1.wav", '\000' path_buf = "/usr/local/freeswitch/sounds/music/iqv-default/48000/1.wav", '\000' last_path = "/usr/local/freeswitch/sounds/music/iqv-default/48000/1.wav", '\000' png_buf = "/usr/local/freeswitch/sounds/music/iqv-default/48000/art/1.wav.png", '\000' tmp_buf = "/usr/local/freeswitch/sounds/music/iqv-default/48000\000\061.wav", '\000' audio_buffer = 0x7fe1740028d0 temp_pool = 0x7fe174023ab8 do_shuffle = 28813240 __func__ = "read_stream_thread" __PRETTY_FUNCTION__ = "read_stream_thread" #6 0x00007fe20bbd07a0 in dummy_worker (opaque=0x1b7b7b0) at threadproc/unix/thread.c:151 thread = 0x1b7b7b0 #7 0x00007fe20ae010a4 in start_thread (arg=0x7fe18891f700) at pthread_create.c:309 __res = pd = 0x7fe18891f700 now = unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140606635636480, -9198946143358838508, 0, 140608849543264, 140606636146400, 140606635636480, 919348962734935 mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = pagesize_m1 = sp = freesize = __PRETTY_FUNCTION__ = "start_thread" #8 0x00007fe20a4d962d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111