#0  0x007c8302 in malloc_consolidate () from /lib/tls/libc.so.6
(gdb) bt
#0  0x007c8302 in malloc_consolidate () from /lib/tls/libc.so.6
#1  0x007c92f3 in _int_malloc () from /lib/tls/libc.so.6
#2  0x007cae26 in calloc () from /lib/tls/libc.so.6
#3  0x080b7496 in _ast_calloc (num=1, len=1004, file=0x810b653 "cdr.c",
    lineno=437, func=0x810b91d "ast_cdr_alloc") at include/asterisk/utils.h:312
#4  0x0808e3f2 in ast_cdr_alloc () at cdr.c:437
#5  0x08075687 in __ast_pbx_run (c=0xb633b658) at pbx.c:2202
#6  0x0807667d in pbx_thread (data=0xb633b658) at pbx.c:2456
#7  0x080b7eca in dummy_start (data=0xb7872170) at utils.c:538
#8  0x008c3371 in start_thread () from /lib/tls/libpthread.so.0
#9  0x0082e9be in clone () from /lib/tls/libc.so.6