(gdb) bt full
#0  0x00002aaaaaccc8d0 in pthread_mutex_lock () from /lib/libpthread.so.0
No symbol table info available.
#1  0x00002aaaabba5705 in retrans_pkt (data=0x0) at lock.h:592
        pkt = (struct sip_pkt *) 0x72f550
        prev = (struct sip_pkt *) 0x0
        cur = (struct sip_pkt *) 0x2aaab8c51750
        iabuf = "\000\000\000\000\000\000\000\000?\003\000\000\000\000\000"
        reschedule = 1000
        __PRETTY_FUNCTION__ = "retrans_pkt"
#2  0x0000000000411b40 in ast_sched_runq (con=0x636580) at sched.c:373
        tv = {tv_sec = 1146828100, tv_usec = 685844}
        x = 0
        res = 30
#3  0x00002aaaabbd9275 in do_monitor (data=0x0) at chan_sip.c:11350
        res = 0
        sip = (struct sip_pvt *) 0x1
        peer = (struct sip_peer *) 0x0
        t = 1146828100
        fastrestart = 0
        lastpeernum = -1
        curpeernum = 1895
        reloading = 1
        __PRETTY_FUNCTION__ = "do_monitor"
#4  0x00002aaaaaccab55 in start_thread () from /lib/libpthread.so.0
No symbol table info available.