Crash at my_free

SELECT * FROM x , x ; 

SELECT 'SM PKG' AS x GROUP BY JSON_SCHEMA_VALID ( '{"properties": "a_string": {"pattern": "^[5-9]$"}}}' , '{"a_string": "8"}' ) HAVING EXTRACTVALUE ( ( SELECT 1 AS x UNION SELECT 1 UNION SELECT 1 ORDER BY 1 ) , 'a' ) > 1 UNION SELECT 1 UNION SELECT 1 ORDER BY ( SELECT x ORDER BY 1 ) ; 

ALTER TABLE FORCE ;

#0 0x56b4b5b81602 (my_free+0x32)

#1 0x56b4b5b4482d (delete_dynamic+0x4d)

#2 0x56b4b5b4c84c (my_hash_free+0xdc)

#3 0x56b4b50a8b33 (_ZN22Json_schema_propertiesD0Ev+0x43)

#4 0x56b4b508b816 (_ZN27Item_func_json_schema_valid7cleanupEv+0x66)

#5 0x56b4b4d0fa90 (_ZN3THD19cleanup_after_queryEv+0x3b0)

#6 0x56b4b4daa9d1 (_Z16dispatch_command19enum_server_commandP3THDPcjb+0x16b1)

#7 0x56b4b4daecd1 (_Z10do_commandP3THDb+0x4b1)

#8 0x56b4b4fe4b74 (_Z24do_handle_one_connectionP7CONNECTb+0x2a4)

#9 0x56b4b4fe47a3 (handle_one_connection+0xd3)

#10 0x56b4b56ad0b4 (pfs_spawn_thread+0x104)

#11 0x7d5a0236d609 (start_thread+0xd9)

#12 0x7d5a0208f353 (clone+0x43)