Core was generated by `/usr/sbin/asterisk'.
Program terminated with signal 11, Segmentation fault.
[New process 27433]
[New process 17482]
...
[New process 27425]
[New process 27423]
#0  0xb78a169e in proc_session_timer (vp=0x8332680) at chan_sip.c:18566
18566           ast_debug(2, "Session timer expired: %d - %s\n", p->stimer->st_schedid, p->callid);
(gdb) bt full
#0  0xb78a169e in proc_session_timer (vp=0x8332680) at chan_sip.c:18566
        p = (struct sip_pvt *) 0x8332680
        sendreinv = 0
        __PRETTY_FUNCTION__ = "proc_session_timer"
#1  0x081452bc in ast_sched_runq (con=0x820e098) at sched.c:365
        current = (struct sched *) 0x82b18e0
        tv = {tv_sec = 1214443822, tv_usec = 882877}
        numevents = 0
        res = 0
        __PRETTY_FUNCTION__ = "ast_sched_runq"
#2  0xb78a0dde in do_monitor (data=0x0) at chan_sip.c:18465
        res = 0
        dialog = (struct sip_pvt *) 0x0
        t = 1214443822
        reloading = 0
        __PRETTY_FUNCTION__ = "do_monitor"
#3  0x0815988d in dummy_start (data=0x8211ce0) at utils.c:872
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {-1211162636, 0, -1216361584, -1216363560, -343490416, 1060038638}, __mask_was_saved = 0}}, __pad = {0xb77fc490, 0x0, 0x0, 0x0}}
        __cancel_routine = (void (*)(void *)) 0x8071a8d <ast_unregister_thread>
        __cancel_arg = (void *) 0xb77fcb90
        not_first_call = 0
        ret = (void *) 0x0
        a = {start_routine = 0xb78a097f <do_monitor>, data = 0x0, name = 0x8211f70 "do_monitor", ' ' <repeats 11 times>, "started at [18493] chan_sip.c restart_monitor()"}
        lock_info = (struct thr_lock_info *) 0x82120d0
        mutex_attr = {__size = "\001\000\000", __align = 1}
        __PRETTY_FUNCTION__ = "dummy_start"
#4  0xb7ce24fb in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#5  0xb7dcfe5e in clone () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.