reef-paladin:4157 failed

Builders failed on: 
- reef-paladin: 
  https://luci-milo.appspot.com/buildbot/chromeos/reef-paladin/4157


teravest@teravest:~$ dut-status -f chromeos2-row7-rack6-host19
chromeos2-row7-rack6-host19
    2017-11-02 12:55:31  OK http://cautotest/tko/retrieve_logs.cgi?job=/results/hosts/chromeos2-row7-rack6-host19/141625-repair/
    2017-11-02 12:14:49  -- http://cautotest/tko/retrieve_logs.cgi?job=/results/hosts/chromeos2-row7-rack6-host19/141395-provision/
    2017-11-02 09:58:39  -- http://cautotest/tko/retrieve_logs.cgi?job=/results/153429797-chromeos-test/
    2017-11-02 09:58:05  OK http://cautotest/tko/retrieve_logs.cgi?job=/results/hosts/chromeos2-row7-rack6-host19/140577-reset/
    2017-11-02 09:57:05  -- http://cautotest/tko/retrieve_logs.cgi?job=/results/153429791-chromeos-test/

From the repair job, we see this:
233 | 2017-11-02 13:09:09 | Kernel Event | Clean Shutdown
234 | 2017-11-02 13:09:10 | System boot | 4906
235 | 2017-11-02 13:09:10 | System Reset
236 | 2017-11-02 13:10:03 | Kernel Event | Panic
237 | 2017-11-02 13:10:04 | System boot | 4907
238 | 2017-11-02 13:10:04 | System Reset
239 | 2017-11-02 13:13:56 | System boot | 4908

I'm still trying to walk back and see if we can figure out what this panic is.