Unsafe use of LOCK_thd_kill in my_malloc_size_cb_func()

SET max_session_mem_used=50000;

SET SESSION max_statement_time=1;

--error ER_STATEMENT_TIMEOUT

SELECT SLEEP (3);

INSTALL PLUGIN RocksDB SONAME 'ha_rocksdb.so';

CREATE TABLE t1 (i INT) ENGINE=RocksDB max_rows=100000000000;

--error ER_BAD_FIELD_ERROR

DELETE FROM t1 WHERE c1='-838:59:59' AND c2='-838:59:59';

UNINSTALL PLUGIN RocksDB;

safe_mutex: Found wrong usage of mutex 'LOCK_plugin' and 'LOCK_thd_kill'

Mutex currently locked (in reverse order):

LOCK_thd_kill                     /test/11.4_dbg/sql/sql_class.h  line 4703

LOCK_plugin                       /test/11.4_dbg/sql/sql_plugin.cc  line 2477