I have the same problem.

Keepalived v1.1.17 (02/10,2010)

Config:
****
virtual_server localhost 8443 {

    delay_loop 5
    protocol TCP

    real_server localhost 8443 {

        notify_up "logger -p daemon.warn -t Keepalived 'Proxy UP';"
        notify_down "logger -p daemon.err -t Keepalived 'Proxy DOWN, 
restarting...'; service vrrp restart; service nginx restart"

        SSL_GET {
            url {
              path /stub
              status_code 200
            }
            connect_port    8443
            connect_timeout 3
            delay_before_retry 3
        }
    }

    real_server localhost 8443 {

        notify_up "logger -p daemon.warn -t Keepalived 'VRRPd UP';"
        notify_down "logger -p daemon.err -t Keepalived 'VRRPd DOWN, 
restarting...'; service vrrp restart"

****

The problem is reproduced after rebooting the computer. It is writing the 
following messages to log:
May 31 18:24:36 int-top-lb2 Keepalived: Remove a zombie pid file 
/var/run/checkers.pid
May 31 18:24:36 int-top-lb2 Keepalived: Starting Healthcheck child process, 
pid=3738
May 31 18:24:36 int-top-lb2 Keepalived: Healthcheck child process(3738) died: 
Respawning
May 31 18:24:36 int-top-lb2 Keepalived: Remove a zombie pid file 
/var/run/checkers.pid
May 31 18:24:36 int-top-lb2 Keepalived: Starting Healthcheck child process, 
pid=3740
May 31 18:24:36 int-top-lb2 Keepalived: Healthcheck child process(3740) died: 
Respawning
May 31 18:24:36 int-top-lb2 Keepalived: Remove a zombie pid file 
/var/run/checkers.pid
May 31 18:24:36 int-top-lb2 Keepalived: Starting Healthcheck child process, 
pid=3742
and so on

As we have found after execution of "modprob ip_vs" keepalived become to
normal work

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https://bugs.launchpad.net/bugs/160426

Title:
  keepalived using genhash keeps getting "zombied" and using CPU to a
  100%

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