[#MDEV-14149] galera.MW-328A, galera.MW-328C failed with "Found wrong usage of mutex"

10.2 e99c7c8334f842a debug build
galera.MW-328A 'innodb' w2 [ fail ] Found warnings/errors in server log file!
Test ended at 2017-10-26 03:59:38
line
safe_mutex: Found wrong usage of mutex 'LOCK_wsrep_thd' and 'LOCK_thd_kill'
^ Found warnings in /home/elenst/git/10.2/mysql-test/var/2/log/mysqld.2.err
ok

- saving '/home/elenst/git/10.2/mysql-test/var/2/log/galera.MW-328A-innodb/' to '/home/elenst/git/10.2/mysql-test/var/log/galera.MW-328A-innodb/'
galera.MW-328C 'innodb' w2 [ fail ] Found warnings/errors in server log file!
Test ended at 2017-10-26 03:59:52
line
safe_mutex: Found wrong usage of mutex 'LOCK_wsrep_thd' and 'LOCK_thd_kill'
^ Found warnings in /home/elenst/git/10.2/mysql-test/var/2/log/mysqld.2.err
ok

Monty also reported seeing a timeout on galera.MW-328C, and there have been a couple of them in buildbot, although not recently.

[MDEV-14149] galera.MW-328A, galera.MW-328C failed with "Found wrong usage of mutex" Created: 2017-10-26 Updated: 2018-09-14 Resolved: 2018-09-14
Status:	Closed
Project:	MariaDB Server
Component/s:	Galera, Tests
Affects Version/s:	10.2
Fix Version/s:	N/A