# # Bug #39022: Mysql randomly crashing in lock_sec_rec_cons_read_sees # call mtr.add_suppression("Deadlock found when trying to get lock; try restarting transaction"); CREATE TABLE t1(a TINYINT NOT NULL,b TINYINT,PRIMARY KEY(b)) ENGINE=innodb; CREATE TABLE t2(d TINYINT NOT NULL,UNIQUE KEY(d)) ENGINE=innodb; INSERT INTO t1 VALUES (13,0),(8,1),(9,2),(6,3), (11,5),(11,6),(7,7),(7,8),(4,9),(6,10),(3,11),(11,12), (12,13),(7,14); INSERT INTO t2 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),(10), (11),(12),(13),(14); connect thread1, localhost, root,,; connect thread2, localhost, root,,; connection thread1; START TRANSACTION; connection thread2; REPLACE INTO t2 VALUES (-17); SELECT d FROM t2,t1 WHERE d=(SELECT MAX(a) FROM t1 WHERE t1.a > t2.d) LOCK IN SHARE MODE; d connection thread1; REPLACE INTO t1(a,b) VALUES (67,20); connection thread2; COMMIT; START TRANSACTION; REPLACE INTO t1(a,b) VALUES (65,-50); REPLACE INTO t2 VALUES (-91); SELECT d FROM t2,t1 WHERE d=(SELECT MAX(a) FROM t1 WHERE t1.a > t2.d) LOCK IN SHARE MODE; connection thread1; # should not crash SELECT d FROM t2,t1 WHERE d=(SELECT MAX(a) FROM t1 WHERE t1.a > t2.d) LOCK IN SHARE MODE; Got one of the listed errors connection thread2; d disconnect thread2; connection thread1; disconnect thread1; connection default; DROP TABLE t1,t2;