#0  0x00007ffff666960e in pjsip_inv_dec_ref () from /usr/lib/libpjsip-ua.so.2
No symbol table info available.
#1  0x0000000000460476 in __ao2_ref (user_data=user_data@entry=0x7ffff44a1180, delta=delta@entry=-1, tag=tag@entry=0x7ffff5de0486 "", file=file@entry=0x7ffff5de0012 "res_pjsip_session.c", line=line@entry=4527, 
    func=func@entry=0x7ffff5de35d0 <__PRETTY_FUNCTION__.31263> "session_end_completion") at astobj2.c:614
        obj = 0x7ffff44a1168
        obj_mutex = <optimized out>
        obj_rwlock = <optimized out>
        obj_lockobj = <optimized out>
        current_value = <optimized out>
        ret = <optimized out>
        weakproxy = <optimized out>
        lock_state = <optimized out>
        __PRETTY_FUNCTION__ = "__ao2_ref"
#2  0x0000000000460a1b in __ao2_cleanup_debug (obj=obj@entry=0x7ffff44a1180, tag=tag@entry=0x7ffff5de0486 "", file=file@entry=0x7ffff5de0012 "res_pjsip_session.c", line=line@entry=4527, 
    function=function@entry=0x7ffff5de35d0 <__PRETTY_FUNCTION__.31263> "session_end_completion") at astobj2.c:670
No locals.
#3  0x00007ffff5dcc144 in session_end_completion (vsession=0x7ffff44a1180) at res_pjsip_session.c:4527
        session = 0x7ffff44a1180
        __PRETTY_FUNCTION__ = "session_end_completion"
#4  0x0000000000582c8a in ast_taskprocessor_execute (tps=tps@entry=0x7ffff504c6f0) at taskprocessor.c:1237
        local = {local_data = 0x0, data = 0x0}
        t = 0x7ffff6f07080
        size = <optimized out>
        __PRETTY_FUNCTION__ = "ast_taskprocessor_execute"
#5  0x0000000000589de0 in execute_tasks (data=0x7ffff504c6f0) at threadpool.c:1356
        tps = 0x7ffff504c6f0
#6  0x0000000000582c8a in ast_taskprocessor_execute (tps=0x7ffff56659d0) at taskprocessor.c:1237
        local = {local_data = 0x7ffff50875f0, data = 0x7ffff5665860}
        t = 0x7ffff6f070b0
        size = <optimized out>
        __PRETTY_FUNCTION__ = "ast_taskprocessor_execute"
#7  0x000000000058a6b0 in threadpool_execute (pool=0x7ffff5665860) at threadpool.c:367
        __PRETTY_FUNCTION__ = "threadpool_execute"
#8  worker_active (worker=0x7ffff50875f0) at threadpool.c:1137
        alive = <optimized out>
#9  worker_start (arg=arg@entry=0x7ffff50875f0) at threadpool.c:1056
        worker = 0x7ffff50875f0
        saved_state = <optimized out>
        __PRETTY_FUNCTION__ = "worker_start"
#10 0x0000000000591999 in dummy_start (data=<optimized out>) at utils.c:1299
        __cb = {__f = 0x45e420 <ast_unregister_thread>, __x = 0x7ffff4effb30, __next = 0x0}
        ret = <optimized out>
        a = {start_routine = 0x58a320 <worker_start>, data = 0x7ffff50875f0, name = 0x7ffff5665750 "worker_start         started at [ 1111] threadpool.c worker_thread_start()"}
        __PRETTY_FUNCTION__ = "dummy_start"
#11 0x00007ffff7fb9cdb in ?? () from /lib/ld-musl-x86_64.so.1
No symbol table info available.
#12 0x0000000000000000 in ?? ()