(gdb) bt
#0  0x00117777 in pthread_mutex_lock () from /lib/tls/libpthread.so.0
#1  0x00580990 in local_fixup (oldchan=0x8687b68, newchan=0x865f4c8)
    at chan_local.c:193
#2  0x0805f461 in ast_do_masquerade (original=0x8687b68) at channel.c:2300
#3  0x0805ae58 in ast_hangup (chan=0x8687b68) at channel.c:696
#4  0x009d5a62 in dial_exec (chan=0x86bc938, data=0x0) at app_dial.c:1041
#5  0x08074206 in pbx_exec (c=0x86bc938, app=0x8680578, data=0xb3beb440,
    newstack=1) at pbx.c:471
#6  0x0807c0ff in pbx_extension_helper (c=0x86bc938,
    context=0x86bca90 "macro-dial",
    exten=0x86bc938 "Local/1800@from-internal-5807,2", priority=10,
    callerid=0x8658818 "\"360xxxxxxx\" <360xxxxxxx>", action=141282180)
    at pbx.c:1290
#7  0x0807af25 in ast_spawn_extension (c=0x865f4c8,
    context=0x865f4c8 "IAX2/pbx/1<MASQ>", exten=0x865f4c8 "IAX2/pbx/1<MASQ>",
    priority=140899528, callerid=0x865f4c8 "IAX2/pbx/1<MASQ>") at pbx.c:1772
#8  0x00ca9464 in macro_exec (chan=0x86bc938, data=0x86bc938)
    at app_macro.c:141
#9  0x08074206 in pbx_exec (c=0x86bc938, app=0x8694de0, data=0xb3befda0,
    newstack=1) at pbx.c:471
#10 0x0807c0ff in pbx_extension_helper (c=0x86bc938,
    context=0x86bca90 "macro-dial",
    exten=0x86bc938 "Local/1800@from-internal-5807,2", priority=7,
    callerid=0x8658818 "\"360xxxxxxx\" <360xxxxxxx>", action=141282180)
    at pbx.c:1290
#11 0x0807af25 in ast_spawn_extension (c=0x865f4c8,
    context=0x865f4c8 "IAX2/pbx/1<MASQ>", exten=0x865f4c8 "IAX2/pbx/1<MASQ>",
    priority=140899528, callerid=0x865f4c8 "IAX2/pbx/1<MASQ>") at pbx.c:1772
#12 0x00ca9464 in macro_exec (chan=0x86bc938, data=0x86bc938)
    at app_macro.c:141
#13 0x08074206 in pbx_exec (c=0x86bc938, app=0x8694de0, data=0xb3bf4700,
    newstack=1) at pbx.c:471
#14 0x0807c0ff in pbx_extension_helper (c=0x86bc938,
    context=0x86bca90 "macro-dial",
    exten=0x86bc938 "Local/1800@from-internal-5807,2", priority=1,
    callerid=0x8658818 "\"360xxxxxxx\" <360xxxxxxx>", action=141282180)
    at pbx.c:1290
#15 0x0807622a in ast_pbx_run (c=0x86bc938) at pbx.c:1772
#16 0x0807c7c1 in pbx_thread (data=0x865f4c8) at pbx.c:1995
#17 0x00115de8 in start_thread () from /lib/tls/libpthread.so.0
#18 0x002d893a in clone () from /lib/tls/libc.so.6