If this was not a flake then it will probably bring the PFQ down.

Failure looks like it was a flake.

Seems to be a relatively common flake though [1]. Here is another failure.

  2017-10-26T22:23:09.489309+00:00 CRIT cryptohomed[1347]: Check failed: this == g_top_manager (0x7f398c033d60 vs. 0x7f399ea760a0)#012/usr/lib64/libbase-core-395517.so(base::debug::StackTrace::StackTrace()+0x13) [0x7f399cb39d43]#012

1: https://uberchromegw.corp.google.com/i/chromeos.chrome/builders/tricky-tot-chrome-pfq-informational/builds/6561

Seen here too:
https://uberchromegw.corp.google.com/i/chromeos/builders/sentry-paladin/builds/1652
https://pantheon.corp.google.com/storage/browser/chromeos-autotest-results/159131931-chromeos-test/chromeos4-row8-rack9-host5/cheets_StartAndroid.stress/sysinfo/var/log/

Looking at messages:
2017-11-29T01:07:22.188339+00:00 CRIT cryptohomed[1487]: Check failed: this == g_top_manager (0x72a13c009de0 vs. 0x6092da6f7710)#012/usr/lib64/libbase-core-
...
2017-11-29T01:07:22.217942+00:00 WARNING crash_reporter[4187]: [user] Received crash notification for cryptohomed[1487] sig 6, user 0 (developer build - not testing - always dumping)

I don't think this is what ends up causing the test to fail though.

crashdump attached.

Deleted: 159131931-chromeos-test%2Fchromeos4-row8-rack9-host5%2Fdebug%2Fcryptohomed.20171128.170722.1487.dmp.txt 32.5 KB

159131931-chromeos-test%2Fchromeos4-row8-rack9-host5%2Fdebug%2Fcryptohomed.20171128.170722.1487.dmp.txt 32.5 KB View Download

Seen here again:
https://luci-milo.appspot.com/buildbot/chromeos/lumpy-paladin/30367
https://pantheon.corp.google.com/storage/browser/chromeos-autotest-results/159213667-chromeos-test/chromeos6-row2-rack7-host19/security_ProfilePermissions.login/sysinfo/

2017-11-29T08:30:58.142612+00:00 CRIT cryptohomed[1139]: Check failed: this == g_top_manager (0x7f4a54001740 vs. 0x7f4a64108c50)#012/usr/lib64/libbase-core-395517.so(base::debug::StackTrace::StackTrace()+0x13) [0x7f4a6275bfd3]#012

b/69871115#comment4 (cheets_StartAndroid.stress failure) also has:

2017-11-29T01:07:22.188339+00:00 CRIT cryptohomed[1487]: Check failed: this == g_top_manager (0x72a13c009de0 vs. 0x6092da6f7710)#012/usr/lib64/libbase-core-395517.so(base::debug::StackTrace::StackTrace()+0x13) [0x72a14b3b6dc3]#012

See also analysis in http://b/69871115 (comments 7-11).

Minimal CL to deal with crashes is submitted for review - see http://b/69871115#comment20.

A better duplicate...