(gdb) bt
#0 0x40000410 in __kernel_vsyscall ()
#1 0x007b4df0 in raise () from /lib/libc.so.6
#2 0x007b6701 in abort () from /lib/libc.so.6
#3 0x007ed3ab in __libc_message () from /lib/libc.so.6
#4 0x007f63fd in _int_malloc () from /lib/libc.so.6
#5 0x007f7cca in calloc () from /lib/libc.so.6
#6 0x081954f8 in _ast_calloc (num=1, len=466, file=0x81da854 "frame.c", lineno=511, func=0x81db170 "ast_frdup")
at /usr/src/asterisk-1.8.11.1/include/asterisk/utils.h:480
#7 0x08108c30 in ast_frdup (f=0x4b23be24) at frame.c:511
#8 0x08108789 in ast_frisolate (fr=0x4b23be24) at frame.c:396
#9 0x0818cef3 in ast_trans_frameout (pvt=0x4b23be20, datalen=0, samples=0) at translate.c:218
#10 0x0818cf1c in default_frameout (pvt=0x4b23be20) at translate.c:223
#11 0x0818d66f in ast_translate (path=0x4b23be20, f=0x4a9d7ec4, consume=0) at translate.c:326
#12 0x081036c0 in ast_writestream (fs=0x9465d80, f=0x4a9d7ec4) at file.c:192
#13 0x080b2730 in __ast_read (chan=0x4aa8a530, dropaudio=0) at channel.c:4185
#14 0x080b2b68 in ast_read (chan=0x4aa8a530) at channel.c:4257
#15 0x080bc3fb in ast_generic_bridge (c0=0x4aa8a530, c1=0x4b0ace28, config=0x4597171c, fo=0x45970430, rc=0x4597042c) at channel.c:7068
#16 0x080be4fa in ast_channel_bridge (c0=0x4aa8a530, c1=0x4b0ace28, config=0x4597171c, fo=0x45970430, rc=0x4597042c) at channel.c:7501
#17 0x080f7008 in ast_bridge_call (chan=0x4aa8a530, peer=0x4b0ace28, config=0x4597171c) at features.c:4021
#18 0x404671bb in dial_exec_full (chan=0x4aa8a530,
data=0x4597204a "Local/1@product-call-exten/n&Local/2@product-call-exten/n&Local/3@product-call-exten/n&Local/4@product-call-exten/n&Local/5@product-call-exten/n&Local/6@product-call-exten/n,20,M(product-answer"..., peerflags=0x45971b50, continue_exec=0x0) at app_dial.c:2829
#19 0x40467b65 in dial_exec (chan=0x4aa8a530,
data=0x4597204a "Local/1@product-call-exten/n&Local/2@product-call-exten/n&Local/3@product-call-exten/n&Local/4@product-call-exten/n&Local/5@product-call-exten/n&Local/6@product-call-exten/n,20,M(product-answer"...) at app_dial.c:2929
#20 0x08137b67 in pbx_exec (c=0x4aa8a530, app=0x8cd23d8,
data=0x4597204a "Local/1@product-call-exten/n&Local/2@product-call-exten/n&Local/3@product-call-exten/n&Local/4@product-call-exten/n&Local/5@product-call-exten/n&Local/6@product-call-exten/n,20,M(product-answer"...) at pbx.c:1430
#21 0x402cdce3 in handle_exec (chan=0x4aa8a530, agi=0x4597291c, argc=3, argv=0x45971db4) at res_agi.c:2494
#22 0x402d0540 in agi_handle_command (chan=0x4aa8a530, agi=0x4597291c, buf=0x45972040 "EXEC", dead=0) at res_agi.c:3378
#23 0x402d0fa1 in run_agi (chan=0x4aa8a530, request=0x459728b0 "agi://127.0.0.1/product?stype=external", agi=0x4597291c, pid=-1, status=0x45972910,
dead=0, argc=1, argv=0x45972934) at res_agi.c:3569
#24 0x402d235f in agi_exec_full (chan=0x4aa8a530, data=0x45974d48 "agi://127.0.0.1/product?stype=external", enhanced=0, dead=0) at res_agi.c:3861
#25 0x402d24c2 in agi_exec (chan=0x4aa8a530, data=0x45974d48 "agi://127.0.0.1/product?stype=external") at res_agi.c:3895
#26 0x08137b67 in pbx_exec (c=0x4aa8a530, app=0x8c5cda0, data=0x45974d48 "agi://127.0.0.1/product?stype=external") at pbx.c:1430
#27 0x0814084e in pbx_extension_helper (c=0x4aa8a530, con=0x0, context=0x4aa8a89c "from-external", exten=0x4aa8a8ec "12125631929", priority=1, label=0x0,
callerid=0x4ac48fe0 "\037\004", action=E_SPAWN, found=0x45977254, combined_find_spawn=1) at pbx.c:4249
#28 0x081424e4 in ast_spawn_extension (c=0x4aa8a530, context=0x4aa8a89c "from-external", exten=0x4aa8a8ec "12125631929", priority=1,
callerid=0x4ac48fe0 "\037\004", found=0x45977254, combined_find_spawn=1) at pbx.c:4887
#29 0x08142ed5 in __ast_pbx_run (c=0x4aa8a530, args=0x0) at pbx.c:4987
#30 0x08144b3d in pbx_thread (data=0x4aa8a530) at pbx.c:5327
---Type <return> to continue, or q <return> to quit---
#31 0x081967b2 in dummy_start (data=0x4a9fd9c8) at utils.c:1004
#32 0x00933832 in start_thread () from /lib/libpthread.so.0
#33 0x0085e45e in clone () from /lib/libc.so.6