Core was generated by `/usr/sbin/asterisk -f -U asterisk -G asterisk -vvvg -c'.
Program terminated with signal 6, Aborted.
#0  0x00b35402 in __kernel_vsyscall ()
(gdb) bt
#0  0x00b35402 in __kernel_vsyscall ()
#1  0x00973ba0 in raise () from /lib/libc.so.6
#2  0x009754b1 in abort () from /lib/libc.so.6
#3  0x009a9dfb in __libc_message () from /lib/libc.so.6
#4  0x009b1aa6 in _int_free () from /lib/libc.so.6
#5  0x009b4fc0 in free () from /lib/libc.so.6
#6  0x00df3541 in __sip_destroy (p=0x9721918, lockowner=1, lockdialoglist=0) at chan_sip.c:4344
#7  0x00e0a41b in do_monitor (data=0x0) at chan_sip.c:18480
#8  0x0812c3eb in dummy_start (data=0xb7c177a8) at utils.c:870
#9  0x00ac145b in start_thread () from /lib/libpthread.so.0
#10 0x00a1924e in clone () from /lib/libc.so.6
(gdb) bt full
#0  0x00b35402 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00973ba0 in raise () from /lib/libc.so.6
No symbol table info available.
#2  0x009754b1 in abort () from /lib/libc.so.6
No symbol table info available.
#3  0x009a9dfb in __libc_message () from /lib/libc.so.6
No symbol table info available.
#4  0x009b1aa6 in _int_free () from /lib/libc.so.6
No symbol table info available.
#5  0x009b4fc0 in free () from /lib/libc.so.6
No symbol table info available.
#6  0x00df3541 in __sip_destroy (p=0x9721918, lockowner=1, lockdialoglist=0) at chan_sip.c:4344
        cur = <value optimized out>
        cp = <value optimized out>
        __PRETTY_FUNCTION__ = "__sip_destroy"
#7  0x00e0a41b in do_monitor (data=0x0) at chan_sip.c:18480
        res = <value optimized out>
        dialog = (struct sip_pvt *) 0x970d9a0
        t = 1206308510
        reloading = <value optimized out>
        __PRETTY_FUNCTION__ = "do_monitor"
#8  0x0812c3eb in dummy_start (data=0xb7c177a8) at utils.c:870
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {-1212112144, 0, -1212400752, -1212402760, -1223079781, 146257967}, __mask_was_saved = 0}}, __pad = {
    0xb7bc3470, 0x0, 0x0, 0x0}}
        __cancel_arg = (void *) 0xb7bc3b90
        not_first_call = <value optimized out>
        ret = <value optimized out>
#9  0x00ac145b in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#10 0x00a1924e in clone () from /lib/libc.so.6
No symbol table info available.
(gdb)