#0  0x00007ff852524188 in _int_malloc () from /lib64/libc.so.6
#1  0x00007ff8525247ed in calloc () from /lib64/libc.so.6
#2  0x00000000005f16fb in _ast_calloc (num=1, len=2944, file=0x69fcdb "astobj2.c", lineno=545, func=0x69ff40 "internal_ao2_alloc") at /usr/local/src/asterisk/asterisk-13.5.0/include/asterisk/utils.h:573
#3  0x000000000045cf98 in internal_ao2_alloc (data_size=2856, destructor_fn=0x4b05a3 <ast_channel_destructor>, options=0, file=0x69fcdb "astobj2.c", line=630, func=0x69ff29 "__ao2_alloc") at astobj2.c:545
#4  0x000000000045d233 in __ao2_alloc (data_size=2856, destructor_fn=0x4b05a3 <ast_channel_destructor>, options=0) at astobj2.c:630
#5  0x00000000004cde66 in __ast_channel_internal_alloc (destructor=0x4b05a3 <ast_channel_destructor>, assignedids=0x0, requestor=0x7ff7d8014498, file=0x6ade0b "channel.c", line=794, function=0x6b4070 "__ast_channel_alloc_ap") at channel_internal_api.c:1466
#6  0x00000000004ac6ef in __ast_channel_alloc_ap (needqueue=1, state=0, cid_num=0x7ff7fb690043 "", cid_name=0x7ff7fb690043 "", acctcode=0x992bc2 "", exten=0x0, context=0x1d7296e "from-external", assignedids=0x0, requestor=0x7ff7d8014498, amaflag=AST_AMA_NONE, 
    endpoint=0x1d73cd8, file=0x7ff7fb68ffae "chan_pjsip.c", line=396, function=0x7ff7fb68f0f1 "chan_pjsip_new", name_fmt=0x7ff7fb6900a5 "PJSIP/%s-%08x", ap=0x7ff7ea28b8b0) at channel.c:794
#7  0x00000000004ad16e in __ast_channel_alloc (needqueue=1, state=0, cid_num=0x7ff7fb690043 "", cid_name=0x7ff7fb690043 "", acctcode=0x992bc2 "", exten=0x0, context=0x1d7296e "from-external", assignedids=0x0, requestor=0x7ff7d8014498, amaflag=AST_AMA_NONE, 
    endpoint=0x1d73cd8, file=0x7ff7fb68ffae "chan_pjsip.c", line=396, function=0x7ff7fb68f0f1 "chan_pjsip_new", name_fmt=0x7ff7fb6900a5 "PJSIP/%s-%08x") at channel.c:977
#8  0x00007ff7fb68b443 in chan_pjsip_new (session=0x7ff7d81278f8, state=0, exten=0x0, title=<value optimized out>, assignedids=0x0, requestor=0x7ff7d8014498, cid_name=0x0) at chan_pjsip.c:388
#9  0x00007ff7fb68b871 in chan_pjsip_request (type=<value optimized out>, cap=<value optimized out>, assignedids=0x0, requestor=0x7ff7d8014498, data=<value optimized out>, cause=<value optimized out>) at chan_pjsip.c:1863
#10 0x00000000004bc092 in ast_request (type=0x7ff7e3e2b350 "PJSIP", request_cap=0x7ff7e3127450, assignedids=0x0, requestor=0x7ff7d8014498, addr=0x7ff7e3e2b35c "3393164648@eutelia", cause=0x7ff7ea28cd9c) at channel.c:6004
#11 0x00007ff807e752c2 in dial_exec_full (chan=0x7ff7d8014498, data=0x7ff7ea28d430 "PJSIP/3393164648@eutelia,40", peerflags=0x7ff7ea28d2c0, continue_exec=0x0) at app_dial.c:2391
#12 0x00007ff807e7913d in dial_exec (chan=0x7ff7d8014498, data=0x7ff7ea28d430 "PJSIP/3393164648@eutelia,40") at app_dial.c:3088
#13 0x0000000000567d56 in pbx_exec (c=0x7ff7d8014498, app=0x21351c0, data=0x7ff7ea28d430 "PJSIP/3393164648@eutelia,40") at pbx.c:1720
#14 0x000000000057258d in pbx_extension_helper (c=0x7ff7d8014498, con=0x0, context=0x7ff7d8014e50 "astervoice", exten=0x7ff7d8014ea0 "3393164648", priority=2, label=0x0, callerid=0x0, action=E_SPAWN, found=0x7ff7ea28fb10, combined_find_spawn=1) at pbx.c:4992
#15 0x00000000005753c3 in ast_spawn_extension (c=0x7ff7d8014498, context=0x7ff7d8014e50 "astervoice", exten=0x7ff7d8014ea0 "3393164648", priority=2, callerid=0x0, found=0x7ff7ea28fb10, combined_find_spawn=1) at pbx.c:6033
#16 0x0000000000576a76 in __ast_pbx_run (c=0x7ff7d8014498, args=0x0) at pbx.c:6450
#17 0x000000000057842d in pbx_thread (data=0x7ff7d8014498) at pbx.c:6770
#18 0x00000000005f325c in dummy_start (data=0x7ff7e3edd3c0) at utils.c:1237
#19 0x00007ff85320aa51 in start_thread () from /lib64/libpthread.so.0
#20 0x00007ff85259293d in clone () from /lib64/libc.so.6