1.(gdb) bt full
2.#0  0x00000000005c83dd in ast_sorcery_object_get_id (object=0x0) at sorcery.c:2004
3.        details = 0x0
4.#1  0x00007fd8a4238218 in create_out_of_dialog_request (tdata=0x7fd8ac087c98, provided_contact=0x1151908, uri=0x0, endpoint=0x0, method=0x7fd8acdd8b40) at res_pjsip.c:2725
5.        from = {ptr = 0x20 <Address 0x20 out of bounds>, slen = 5504818}
6.        pool = 0x1151750
7.        contact = 0x1151908
8.        remote_uri = {ptr = 0x11519f2 "1.2.3.4:5060", slen = 17}
9.        selector = {type = PJSIP_TPSELECTOR_NONE, u = {transport = 0x0, listener = 0x0, ptr = 0x0}}
10.#2  ast_sip_create_request (method=method@entry=0x7fd8a424d97f "OPTIONS", dlg=dlg@entry=0x0, endpoint=endpoint@entry=0x0, uri=<optimized out>, uri@entry=0x0,
11.    contact=contact@entry=0x1151908, tdata=tdata@entry=0x7fd8ac087c98) at res_pjsip.c:2774
12.        pmethod = 0x7fd8acdd8b40
13.        __PRETTY_FUNCTION__ = "ast_sip_create_request"
14.#3  0x00007fd8a424aa7a in qualify_contact (endpoint=endpoint@entry=0x0, contact=contact@entry=0x1151908) at res_pjsip/pjsip_options.c:331
15.        tdata = <optimized out>
16.        endpoint_local = 0x0
17.        __PRETTY_FUNCTION__ = "qualify_contact"
18.#4  0x00007fd8a424adbb in qualify_contact_task (obj=0x1151908) at res_pjsip/pjsip_options.c:424
19.        contact = 0x1151908
20.        res = <optimized out>
21.#5  0x00000000005e71ed in ast_taskprocessor_execute (tps=0x113a350) at taskprocessor.c:769
22.        local = {local_data = 0x7fd8ac087d80, data = 0x113c460}
23.        t = 0x1c352c0
24.        size = 0
25.        __PRETTY_FUNCTION__ = "ast_taskprocessor_execute"
26.#6  0x00000000005ee4e4 in threadpool_execute (pool=0x113c4c0) at threadpool.c:351
27.        __PRETTY_FUNCTION__ = "threadpool_execute"
28.#7  0x00000000005efa08 in worker_active (worker=0x113bc10) at threadpool.c:1075
29.        alive = 0
30.#8  0x00000000005ef7c4 in worker_start (arg=0x113bc10) at threadpool.c:995
31.        worker = 0x113bc10
32.        __PRETTY_FUNCTION__ = "worker_start"
33.#9  0x00000000005fb4b8 in dummy_start (data=0x113bcd0) at utils.c:1232
34.        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {0, -7978014603837415671, 140568576408480, 140568575904192, 140568664227904, 3, -7978014603862581495,
35.                7996490040610021129}, __mask_was_saved = 0}}, __pad = {0x7fd8ac087f20, 0x0, 0x0, 0x0}}
36.        __cancel_routine = 0x455747 <ast_unregister_thread>
37.        __cancel_arg = 0x7fd8ac088700
38.        __not_first_call = 0
39.        ret = 0x0
40.        a = {start_routine = 0x5ef73d <worker_start>, data = 0x113bc10, name = 0x1137af0 "worker_start         started at [ 1049] threadpool.c worker_thread_start()"}
41.#10 0x00007fd8afd51b50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
42.---Type <return> to continue, or q <return> to quit---
43.No symbol table info available.
44.#11 0x00007fd8aefcba7d in clone () from /lib/x86_64-linux-gnu/libc.so.6
45.No symbol table info available.
46.#12 0x0000000000000000 in ?? ()
47.No symbol table info available.
48.(gdb)