#3  0x000000080115f531 in comm_point_stop_listening (c=0x801dd0000)
    at unbound/util/netevent.c:4107
#4  0x00000008011458fa in tcp_req_info_setup_listen (req=0x801c55100, req@entry=0x1)
    at unbound/services/listen_dnsport.c:1941
#5  0x0000000801145aaf in tcp_req_info_handle_readdone (req=<optimized out>)
    at unbound/services/listen_dnsport.c:2079
#6  0x00000008011619ca in tcp_callback_reader (c=c@entry=0x801dd0000)
    at unbound/util/netevent.c:1168
#7  0x000000080115f8bc in comm_point_tcp_handle_read (fd=fd@entry=0xd, c=c@entry=0x801dd0000, short_ok=short_ok@entry=0x0)
    at unbound/util/netevent.c:1758
#8  0x000000080115efe1 in comm_point_tcp_handle_callback (fd=0xd, event=<optimized out>, arg=0x801dd0000)
    at unbound/util/netevent.c:2152
#9  0x000000080115348c in handle_select (base=0x801c70780, wait=<optimized out>)
    at unbound/util/mini_event.c:220
#10 minievent_base_dispatch (base=0x801c70780) at unbound/util/mini_event.c:242
#11 0x000000000104077a in ub_event_base_dispatch (base=0x801ca10c0)
    at unbound/util/ub_event.c:280
#12 0x000000080115ce21 in comm_base_dispatch (b=<optimized out>)
    at unbound/util/netevent.c:256
#13 0x000000000104574e in worker_work (worker=<optimized out>)
    at unbound/daemon/worker.c:1940
#14 0x0000000001035563 in daemon_fork (daemon=<optimized out>, daemon@entry=0x801c1a000)
    at unbound/daemon/daemon.c:701
#15 0x0000000001040d4f in run_daemon (cfgfile=0x7fffffffeef7 "/unbound.conf", cmdline_verbose=0x0, debug_mode=0x0, need_pidfile=0x1)
    at unbound/daemon/unbound.c:736
#16 main (argc=<optimized out>, argv=<optimized out>) at unbound/daemon/unbound.c:837

(gdb) frame 0
(gdb) p *to_delete
$16 = {
  parent = 0x0,
  left = 0x0,
  right = 0x0,
  key = 0x801ca10c0,
  color = 0x0
}

        if(tv && (ev->ev_events&EV_TIMEOUT)) {
#ifndef S_SPLINT_S
                struct timeval *now = ev->ev_base->time_tv;
                ev->ev_timeout.tv_sec = tv->tv_sec + now->tv_sec;
                ev->ev_timeout.tv_usec = tv->tv_usec + now->tv_usec;
                while(ev->ev_timeout.tv_usec >= 1000000) {
                        ev->ev_timeout.tv_usec -= 1000000;
                        ev->ev_timeout.tv_sec++;
                }
#endif
                (void)rbtree_insert(ev->ev_base->times, &ev->node);
        }