ChromeOS:R64-10176.22.0
Platform: Tricy running meeting mode

What steps will reproduce the problem?
(1) reboot tricky

What is the expected result?
No crash

What happens instead?
Crash happens after number of rebooting

Please use labels and text to provide additional information.
2017-12-22T04:30:01.230823-08:00 INFO crash_reporter[2569]: libminijail[2569]: mount /dev/log -> /dev/log type ''
2017-12-22T04:30:01.262340-08:00 INFO crash_reporter[2569]: Enabling kernel crash handling
2017-12-22T04:30:01.303103-08:00 INFO crash_reporter[2569]: Received prior crash notification from kernel (signature kernel-list_del_init-590B9789) (developer build - always dumping)
2017-12-22T04:30:01.305882-08:00 INFO crash_reporter[2569]: Stored kcrash to /var/spool/crash/kernel.20171222.043001.0.kcrash
2017-12-22T04:30:01.305921-08:00 WARNING crash_reporter[2569]: Last shutdown was not clean

239 | 2017-12-22 04:19:29 | System boot | 422
240 | 2017-12-22 04:19:29 | System Reset
241 | 2017-12-22 04:19:29 | Chrome OS Developer Mode
242 | 2017-12-22 04:24:22 | Kernel Event | Clean Shutdown
243 | 2017-12-22 04:24:23 | System boot | 423
244 | 2017-12-22 04:24:23 | System Reset
245 | 2017-12-22 04:24:24 | Chrome OS Developer Mode
246 | 2017-12-22 04:29:20 | Kernel Event | Oops  <<<<<<<<<<<<<<<<<<<<
247 | 2017-12-22 04:29:20 | Kernel Event | Panic  <<<<<<<<<<<<<<<<<<<
248 | 2017-12-22 04:29:20 | System boot | 424
249 | 2017-12-22 04:29:20 | System Reset
250 | 2017-12-22 04:29:21 | Chrome OS Developer Mode
localhost ~ # cat /var/log/platform_info.txt 
vendor               | GOOGLE
name                 | Tricky
family               | 
model                | tricky
customization        | TRICKY
localhost ~ # ls -altr /var/spool/crash

test_log
-------------

mzhuo@minzhuo2:~/chromiumos/chroot/tmp/R64-10176.22.0-nomeet$ grep -E "Start_test:reboot_test|Verification_fail|Test_fail" 100.107.146.12/debug/test_that.INFO
12/22 01:59:05.855 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:03:50.092 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:08:11.254 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:13:19.422 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:18:34.623 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:23:48.778 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:28:45.877 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:33:34.141 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:38:44.346 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:43:46.612 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:48:29.894 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:53:21.084 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 02:58:31.610 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:03:16.096 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:08:19.309 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:13:00.427 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:17:46.737 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:22:45.144 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:27:27.589 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:31:51.073 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:37:10.610 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:42:03.068 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:47:16.838 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:52:03.405 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 03:56:51.015 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:01:45.642 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:06:44.243 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:11:42.817 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:17:17.438 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:22:59.090 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:28:20.801 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:33:21.496 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:38:28.155 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:43:25.901 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:48:26.526 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:53:00.130 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 04:58:01.722 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:02:32.267 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:07:18.075 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:12:24.656 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:17:52.433 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:23:06.204 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:28:22.958 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:34:16.729 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:39:23.519 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:44:48.388 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:49:39.079 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:54:31.803 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 05:59:51.528 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 06:05:06.350 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 06:10:18.170 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 06:14:44.996 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 06:19:25.901 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 06:24:19.824 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 06:29:17.649 INFO | test_runner_utils:0199| autoserv| Start_test:reboot_test.
12/22 06:33:11.778 INFO | test_runner_utils:0199| autoserv| 100.107.146.12:Verification_fail:check_process_crash:5
12/22 06:33:46.169 INFO | test_runner_utils:0199| autoserv| 'Test_or_Verification_fails after {}.'.format(test))
12/22 06:33:46.169 INFO | test_runner_utils:0199| autoserv| TestFail: Test_or_Verification_fails after reboot_test.
12/22 06:34:04.384 INFO | test_runner_utils:0199| autoserv| FAIL	enterprise_CFM_Test.test	enterprise_CFM_Test.test	timestamp=1513946044	localtime=Dec 22 06:34:04	Test_or_Verification_fails after reboot_test.
12/22 06:34:04.401 INFO | test_runner_utils:0199| autoserv| tko parser: update RUNNING reason: Test_or_Verification_fails after reboot_test.
12/22 06:34:04.403 INFO | test_runner_utils:0199| autoserv| Test_or_Verification_fails after reboot_test.