(gdb) bt
#0  0xb7f88142 in pthread_mutex_lock () from /lib/libpthread.so.0
#1  0xb7c9f7a0 in retrans_pkt (data=0xb2842c60) at lock.h:584
#2  0x08056458 in ast_sched_runq (con=0x814dcb0) at sched.c:373
#3  0xb7c94efa in do_monitor (data=0x0) at chan_sip.c:11251
#4  0xb7f872fe in pthread_start_thread () from /lib/libpthread.so.0
#5  0xb7e88ada in clone () from /lib/libc.so.6

(gdb) bt full
#0  0xb7f88142 in pthread_mutex_lock () from /lib/libpthread.so.0 
No symbol table info available.
#1  0xb7c9f7a0 in retrans_pkt (data=0xb2842c60) at lock.h:584
        pkt = (struct sip_pkt *) 0xb2842c60
        prev = (struct sip_pkt *) 0x3030303a
        cur = (struct sip_pkt *) 0x816cc50
        iabuf = "°Ü\024\bè\003\000\000Ìù\237¾°\204ø·"
        reschedule = 1000
#2  0x08056458 in ast_sched_runq (con=0x814dcb0) at sched.c:373
        tv = {tv_sec = 0, tv_usec = 808464442}
        x = 1
        res = 135443360
#3  0xb7c94efa in do_monitor (data=0x0) at chan_sip.c:11251
        res = 135584944
        sip = (struct sip_pvt *) 0x814dcb0
        peer = (struct sip_peer *) 0x814dcb0
        t = 1143181391
        fastrestart = 0
        lastpeernum = -1
        curpeernum = 75
        reloading = 135584944
#4  0xb7f872fe in pthread_start_thread () from /lib/libpthread.so.0 
No symbol table info available.
#5  0xb7e88ada in clone () from /lib/libc.so.6
No symbol table info available.