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# # Bug #39022: Mysql randomly crashing in lock_sec_rec_cons_read_sees # 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); ANALYZE TABLE t1; Table Op Msg_type Msg_text test.t1 analyze status OK ANALYZE TABLE t2; Table Op Msg_type Msg_text test.t2 analyze status OK # in thread1 START TRANSACTION; # in 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 # in thread1 REPLACE INTO t1(a,b) VALUES (67,20); # in 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; # in 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; ERROR 40001: Deadlock found when trying to get lock; try restarting transaction # in thread2 d # in thread1; DROP TABLE t1,t2;