localhost*CLI> core show locks ======================================================================= === 13.1.0 === Currently Held Locks ======================================================================= === === (): (times locked) === === Thread ID: 0x2ade89641700 LWP:2946 (default_tps_processing_function started at [ 201] taskprocessor.c default_listener_start()) === ---> Lock #0 (chan_iax2.c): MUTEX 4298 transmit_frame &iaxsl[fr->callno] 0x2ade84f77658 (1) main/backtrace.c:59 __ast_bt_get_addresses() (0x469f12+1D) main/lock.c:218 __ast_pthread_mutex_lock() (0x53d51b+D2) channels/chan_iax2.c:4300 transmit_frame() main/taskprocessor.c:771 ast_taskprocessor_execute() (0x5ee06b+10D) main/taskprocessor.c:176 default_tps_processing_function() main/utils.c:1232 dummy_start() :0 start_thread() libc.so.6 clone() (0x2ade22167fa0+6D) === ------------------------------------------------------------------- === === Thread ID: 0x2ade8c999700 LWP:5785 (pbx_thread started at [ 6708] pbx.c ast_pbx_start()) === ---> Lock #0 (channel.c): MUTEX 2664 ast_hangup chan 0x2ade5c15edb0 (1) main/backtrace.c:59 __ast_bt_get_addresses() (0x469f12+1D) main/lock.c:218 __ast_pthread_mutex_lock() (0x53d51b+D2) main/astobj2.c:164 __ao2_lock() (0x45c0b9+B2) main/channel.c:2666 ast_hangup() (0x4b5348+301) main/pbx.c:6593 __ast_pbx_run() main/pbx.c:6683 pbx_thread() main/utils.c:1232 dummy_start() :0 start_thread() libc.so.6 clone() (0x2ade22167fa0+6D) === ---> Waiting for Lock #1 (chan_iax2.c): MUTEX 5307 iax2_hangup &iaxsl[callno] 0x2ade84f77658 (1) main/backtrace.c:59 __ast_bt_get_addresses() (0x469f12+1D) main/lock.c:218 __ast_pthread_mutex_lock() (0x53d51b+D2) channels/chan_iax2.c:5308 iax2_hangup() main/channel.c:2704 ast_hangup() (0x4b5348+628) main/pbx.c:6593 __ast_pbx_run() main/pbx.c:6683 pbx_thread() main/utils.c:1232 dummy_start() :0 start_thread() libc.so.6 clone() (0x2ade22167fa0+6D) === --- ---> Locked Here: chan_iax2.c line 4298 (transmit_frame) === ------------------------------------------------------------------- === =======================================================================