#0  0x00007f725fcf7115 in _int_malloc () from /lib64/libc.so.6
#1  0x00007f725fcf7dd6 in calloc () from /lib64/libc.so.6
#2  0x000000000055a64c in _ast_calloc (num=1, len=1784, file=0x58ed54 "astobj2.c", lineno=295, 
    func=0x58efc0 "internal_ao2_alloc") at /usr/src/asterisk-1.8.7.2/include/asterisk/utils.h:480
#3  0x000000000044140d in internal_ao2_alloc (data_size=1696, destructor_fn=0x469c8c <ast_channel_destructor>, 
    file=0x58ed54 "astobj2.c", line=340, funcname=0x58efb2 "__ao2_alloc") at astobj2.c:295
#4  0x0000000000441599 in __ao2_alloc (data_size=1696, destructor_fn=0x469c8c <ast_channel_destructor>) at astobj2.c:340
#5  0x0000000000465c1a in __ast_channel_alloc_ap (needqueue=1, state=0, cid_num=0x0, cid_name=0x0, acctcode=0x7f724efe8a8d "", 
    exten=0x7f71300802fc "2250", context=0x7f71300802ac "default", 
    linkedid=0x7f71fc17509a "wd-telsrv05.aalsmeer.waterdrinker.nl-1354100112.15503", amaflag=0, 
    file=0x7f724efe8734 "chan_local.c", line=1115, function=0x7f724efe8f22 "local_new", 
    name_fmt=0x7f724efe8a8e "Local/%s@%s-%04x;1", ap1=0x7f72088edf60, ap2=0x7f72088edf40) at channel.c:1134
#6  0x0000000000467406 in __ast_channel_alloc (needqueue=1, state=0, cid_num=0x0, cid_name=0x0, acctcode=0x7f724efe8a8d "", 
    exten=0x7f71300802fc "2250", context=0x7f71300802ac "default", 
    linkedid=0x7f71fc17509a "wd-telsrv05.aalsmeer.waterdrinker.nl-1354100112.15503", amaflag=0, 
    file=0x7f724efe8734 "chan_local.c", line=1115, function=0x7f724efe8f22 "local_new", 
    name_fmt=0x7f724efe8a8e "Local/%s@%s-%04x;1") at channel.c:1357
#7  0x00007f724efe7c64 in local_new (p=0x7f71300802a8, state=0, 
    linkedid=0x7f71fc17509a "wd-telsrv05.aalsmeer.waterdrinker.nl-1354100112.15503") at chan_local.c:1115
#8  0x00007f724efe7ff8 in local_request (type=0x7f72088eece0 "local", format=8, requestor=0x7f71fc15da28, data=0x7f72088eece6, 
    cause=0x7f72088eede8) at chan_local.c:1167
#9  0x0000000000474120 in ast_request (type=0x7f72088eece0 "local", format=8, requestor=0x7f71fc15da28, data=0x7f72088eece6, 
    cause=0x7f72088eede8) at channel.c:5508
#10 0x00007f724cf3b5cf in ring_entry (qe=0x7f72088f1010, tmp=0x7f71301037b0, busies=0x7f72088f09ec) at app_queue.c:3067
#11 0x00007f724cf3c9f9 in ring_one (qe=0x7f72088f1010, outgoing=0x7f71301037b0, busies=0x7f72088f09ec) at app_queue.c:3236
#12 0x00007f724cf41fb9 in try_calling (qe=0x7f72088f1010, options=0x7f72088f0fa7 "", announceoverride=0x7f72088f0fa9 "", 
    url=0x7f72088f0fa8 "", tries=0x7f72088f2204, noption=0x7f72088f2200, agi=0x0, macro=0x0, gosub=0x0, ringing=0)
    at app_queue.c:4587
#13 0x00007f724cf48c5b in queue_exec (chan=0x7f71fc15da28, data=0x7f72088f4480 "403-89,,,,30") at app_queue.c:6001
#14 0x00000000004f96f4 in pbx_exec (c=0x7f71fc15da28, app=0x2aac5f0, data=0x7f72088f4480 "403-89,,,,30") at pbx.c:1421
#15 0x00000000005031d7 in pbx_extension_helper (c=0x7f71fc15da28, con=0x0, context=0x7f71fc15df80 "queues", 
    exten=0x7f71fc15dfd0 "s", priority=17, label=0x0, callerid=0x7f7130006de0 "2255", action=E_SPAWN, found=0x7f72088f6b70, 
    combined_find_spawn=1) at pbx.c:4119
#16 0x0000000000504e5f in ast_spawn_extension (c=0x7f71fc15da28, context=0x7f71fc15df80 "queues", exten=0x7f71fc15dfd0 "s", 
    priority=17, callerid=0x7f7130006de0 "2255", found=0x7f72088f6b70, combined_find_spawn=1) at pbx.c:4744
#17 0x00000000005058ad in __ast_pbx_run (c=0x7f71fc15da28, args=0x0) at pbx.c:4842
#18 0x0000000000507529 in pbx_thread (data=0x7f71fc15da28) at pbx.c:5177
#19 0x000000000055bcb0 in dummy_start (data=0x7f71fc1f5940) at utils.c:1004
#20 0x00007f725f078851 in start_thread () from /lib64/libpthread.so.0
#21 0x00007f725fd6611d in clone () from /lib64/libc.so.6