on extensions reload
#0  0x00002af1e8f0d0d9 in raise () from /lib64/tls/libc.so.6
#1  0x00002af1e8f0e7ce in abort () from /lib64/tls/libc.so.6
#2  0x00002af1e8f41b61 in __libc_message () from /lib64/tls/libc.so.6
#3  0x00002af1e8f4c660 in malloc_printerr () from /lib64/tls/libc.so.6
#4  0x00002af1e8f48e86 in free () from /lib64/tls/libc.so.6
#5  0x000000000043a18c in destroy_exten (e=0x2aaaacde7a2c) at pbx.c:2435
#6  0x000000000044043f in __ast_context_destroy (con=0x0, registrar=0x2aaaad439715 "pbx_config") at pbx.c:4878
#7  0x000000000043cd6a in ast_merge_contexts_and_delete (extcontexts=0x2aaaad53c630,
    registrar=0x2aaaad439715 "pbx_config") at pbx.c:3511
#8  0x00002aaaad439575 in pbx_load_module () at pbx_config.c:1505
#9  0x00002aaaad438367 in handle_reload_extensions (fd=1, argc=2, argv=0x7fffff8be350) at pbx_config.c:1196
#10 0x0000000000448189 in ast_cli_command (fd=1, s=0x66bcd0 "extensions reload ") at cli.c:1366
#11 0x0000000000472f90 in consolehandler (s=0x66bcd0 "extensions reload ") at asterisk.c:1263
#12 0x00000000004775f3 in main (argc=2, argv=0x7fffff8be998) at asterisk.c:2733

on expired registration
#0  0x00002ab0b284f0d9 in raise () from /lib64/tls/libc.so.6
#1  0x00002ab0b28507ce in abort () from /lib64/tls/libc.so.6
#2  0x00002ab0b2883b61 in __libc_message () from /lib64/tls/libc.so.6
#3  0x00002ab0b288e660 in malloc_printerr () from /lib64/tls/libc.so.6
#4  0x00002ab0b288ae86 in free () from /lib64/tls/libc.so.6
#5  0x000000000043a18c in destroy_exten (e=0x78545c) at pbx.c:2435
#6  0x000000000043a9a2 in ast_context_remove_extension2 (con=0x71c31c, extension=0x40143fb0 "1070", priority=1,
    registrar=0x0) at pbx.c:2720
#7  0x000000000043a751 in ast_context_remove_extension (context=0x2aaaaf2112a0 "sipregistrations",
    extension=0x40143fb0 "1070", priority=1, registrar=0x0) at pbx.c:2640
#8  0x00002aaaaf0bb972 in register_peer_exten (peer=0x78483c, onoff=0) at chan_sip.c:2249
#9  0x00002aaaaf0d093e in expire_register (data=0x78483c) at chan_sip.c:7190
#10 0x00000000004147db in ast_sched_runq (con=0x6f9e2c) at sched.c:361
#11 0x00002aaaaf0f0b77 in do_monitor (data=0x0) at chan_sip.c:14390
#12 0x000000000048970d in dummy_start (data=0x6b12cc) at utils.c:536
#13 0x00002ab0b236fb8a in start_thread () from /lib64/tls/libpthread.so.0
#14 0x00002ab0b28e2b73 in clone () from /lib64/tls/libc.so.6