Server goes into an endless loop on 2nd execution of PS with ONLY_FULL_GROUP_BY, subqueries

revno: 4255

revision-id: sanja@askmonty.org-20140731071110-4uyuza0ykesfxe1b

parent: monty@mariadb.org-20140730102752-3ilbpvmbhr2r9a4x

committer: sanja@askmonty.org

branch nick: work-maria-5.5-MDEV-6441

timestamp: Thu 2014-07-31 10:11:10 +0300

message:

  MDEV-6441: memory leak

  mysql_derived_prepare() was executed on the statement memory.

  Now it is executed on the runtime memory.

  All bugs induced by this were fixed.

SET sql_mode = ONLY_FULL_GROUP_BY;

CREATE TABLE t1 (a INT) ENGINE=MyISAM;

INSERT INTO t1 VALUES (4),(6);

CREATE TABLE t2 (b INT) ENGINE=MyISAM;

INSERT INTO t2 VALUES (1),(8);

CREATE TABLE t3 (c INT) ENGINE=MyISAM;

INSERT INTO t3 VALUES (8),(3);

PREPARE stmt FROM "

SELECT *

FROM ( SELECT t2.* FROM t2, t3 ) AS from_sq

WHERE 0 IN ( 

  SELECT a FROM t1 

  WHERE a IN ( 

    SELECT t1.a FROM t1, t1 t1_1

    WHERE b = t1.a

  )

)

"; 

EXECUTE stmt;

EXECUTE stmt;

+----+------+-----------------+------+---------+------+-----------+------------------------------------------------------------------------------------------------------+----------+

| Id | User | Host            | db   | Command | Time | State     | Info                                                                                                 | Progress |

+----+------+-----------------+------+---------+------+-----------+------------------------------------------------------------------------------------------------------+----------+

|  1 | root | localhost       | test | Query   |  325 | preparing | SELECT *

FROM ( SELECT t2.* FROM t2, t3 ) AS from_sq

WHERE 0 IN ( 

  SELECT a FROM t1 

  WHERE a IN  |    0.000 |

|  2 | root | localhost:55329 | test | Query   |    0 | NULL      | show processlist                                                                                     |    0.000 |

+----+------+-----------------+------+---------+------+-----------+------------------------------------------------------------------------------------------------------+----------+

2 rows in set (0.00 sec)

Thread 2 (Thread 0x7fa34cfb6700 (LWP 20676)):

#0  0x0000000000683914 in compare_fields_by_table_order (field1=0x7fa34c446b98, field2=0x7fa34c445b58, table_join_idx=0x7fa34c4dd098) at sql/sql_select.cc:12225

#1  0x0000000000836e2d in bubble_sort<Item> (list_to_sort=0x7fa34c4c42d8, sort_func=0x68387a <compare_fields_by_table_order(Item*, Item*, void*)>, arg=0x7fa34c4dd098) at sql/sql_list.h:604

#2  0x0000000000833712 in Item_equal::sort (this=0x7fa34c4c4218, compare=0x68387a <compare_fields_by_table_order(Item*, Item*, void*)>, arg=0x7fa34c4dd098) at sql/item_cmpfunc.cc:5901

#3  0x000000000068468f in substitute_for_best_equal_field (context_tab=0x1, cond=0x7fa34c445c98, cond_equal=0x7fa34c445d88, table_join_idx=0x7fa34c4dd098) at sql/sql_select.cc:12635

#4  0x0000000000667141 in JOIN::optimize (this=0x7fa34c44d818) at sql/sql_select.cc:1317

#5  0x000000000066d551 in mysql_select (thd=0x7fa34d118000, rref_pointer_array=0x7fa34c4d6a88, tables=0x7fa34c44c018, wild_num=0, fields=..., conds=0x7fa34c445c98, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2416184064, result=0x7fa34c444098, unit=0x7fa34c4d60c8, select_lex=0x7fa34c4d67c8) at sql/sql_select.cc:3080

#6  0x0000000000663e63 in handle_select (thd=0x7fa34d118000, lex=0x7fa34c4d6018, result=0x7fa34c444098, setup_tables_done_option=0) at sql/sql_select.cc:319

#7  0x000000000063c293 in execute_sqlcom_select (thd=0x7fa34d118000, all_tables=0x7fa34c44c018) at sql/sql_parse.cc:4689

#8  0x000000000063546c in mysql_execute_command (thd=0x7fa34d118000) at sql/sql_parse.cc:2234

#9  0x0000000000656b1b in Prepared_statement::execute (this=0x7fa34c4cc280, expanded_query=0x7fa34cfb4c50, open_cursor=false) at sql/sql_prepare.cc:3928

#10 0x0000000000655c32 in Prepared_statement::execute_loop (this=0x7fa34c4cc280, expanded_query=0x7fa34cfb4c50, open_cursor=false, packet=0x0, packet_end=0x0) at sql/sql_prepare.cc:3587

#11 0x0000000000653d56 in mysql_sql_stmt_execute (thd=0x7fa34d118000) at sql/sql_prepare.cc:2737

#12 0x000000000063549a in mysql_execute_command (thd=0x7fa34d118000) at sql/sql_parse.cc:2244

#13 0x000000000063ed98 in mysql_parse (thd=0x7fa34d118000, rawbuf=0x7fa34c41c0d8 "EXECUTE stmt", length=12, parser_state=0x7fa34cfb5610) at sql/sql_parse.cc:5909

#14 0x00000000006329b3 in dispatch_command (command=COM_QUERY, thd=0x7fa34d118000, packet=0x7fa34d18c001 "EXECUTE stmt", packet_length=12) at sql/sql_parse.cc:1079

#15 0x0000000000631b3f in do_command (thd=0x7fa34d118000) at sql/sql_parse.cc:793

#16 0x0000000000739b14 in do_handle_one_connection (thd_arg=0x7fa34d118000) at sql/sql_connect.cc:1266

#17 0x00000000007395d3 in handle_one_connection (arg=0x7fa34d118000) at sql/sql_connect.cc:1181

#18 0x0000000000b836e3 in pfs_spawn_thread (arg=0x7fa3513ed760) at storage/perfschema/pfs.cc:1015

#19 0x00007fa3532bab50 in start_thread (arg=<optimized out>) at pthread_create.c:304

#20 0x00007fa351bc870d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

Thread 2 (Thread 0x7fa34cfb6700 (LWP 20676)):

#0  0x00000000005a1b3a in base_list_iterator::rewind (this=0x7fa34cfb3940) at sql/sql_list.h:459

#1  0x00000000006a6bbe in List_iterator<Item>::rewind (this=0x7fa34cfb3940) at sql/sql_list.h:549

#2  0x0000000000836eb6 in bubble_sort<Item> (list_to_sort=0x7fa34c4c42d8, sort_func=0x68387a <compare_fields_by_table_order(Item*, Item*, void*)>, arg=0x7fa34c4dd098) at sql/sql_list.h:614

#3  0x0000000000833712 in Item_equal::sort (this=0x7fa34c4c4218, compare=0x68387a <compare_fields_by_table_order(Item*, Item*, void*)>, arg=0x7fa34c4dd098) at sql/item_cmpfunc.cc:5901

#4  0x000000000068468f in substitute_for_best_equal_field (context_tab=0x1, cond=0x7fa34c445c98, cond_equal=0x7fa34c445d88, table_join_idx=0x7fa34c4dd098) at sql/sql_select.cc:12635

#5  0x0000000000667141 in JOIN::optimize (this=0x7fa34c44d818) at sql/sql_select.cc:1317

#6  0x000000000066d551 in mysql_select (thd=0x7fa34d118000, rref_pointer_array=0x7fa34c4d6a88, tables=0x7fa34c44c018, wild_num=0, fields=..., conds=0x7fa34c445c98, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2416184064, result=0x7fa34c444098, unit=0x7fa34c4d60c8, select_lex=0x7fa34c4d67c8) at sql/sql_select.cc:3080

#7  0x0000000000663e63 in handle_select (thd=0x7fa34d118000, lex=0x7fa34c4d6018, result=0x7fa34c444098, setup_tables_done_option=0) at sql/sql_select.cc:319

#8  0x000000000063c293 in execute_sqlcom_select (thd=0x7fa34d118000, all_tables=0x7fa34c44c018) at sql/sql_parse.cc:4689

#9  0x000000000063546c in mysql_execute_command (thd=0x7fa34d118000) at sql/sql_parse.cc:2234

#10 0x0000000000656b1b in Prepared_statement::execute (this=0x7fa34c4cc280, expanded_query=0x7fa34cfb4c50, open_cursor=false) at sql/sql_prepare.cc:3928

#11 0x0000000000655c32 in Prepared_statement::execute_loop (this=0x7fa34c4cc280, expanded_query=0x7fa34cfb4c50, open_cursor=false, packet=0x0, packet_end=0x0) at sql/sql_prepare.cc:3587

#12 0x0000000000653d56 in mysql_sql_stmt_execute (thd=0x7fa34d118000) at sql/sql_prepare.cc:2737

#13 0x000000000063549a in mysql_execute_command (thd=0x7fa34d118000) at sql/sql_parse.cc:2244

#14 0x000000000063ed98 in mysql_parse (thd=0x7fa34d118000, rawbuf=0x7fa34c41c0d8 "EXECUTE stmt", length=12, parser_state=0x7fa34cfb5610) at sql/sql_parse.cc:5909

#15 0x00000000006329b3 in dispatch_command (command=COM_QUERY, thd=0x7fa34d118000, packet=0x7fa34d18c001 "EXECUTE stmt", packet_length=12) at sql/sql_parse.cc:1079

#16 0x0000000000631b3f in do_command (thd=0x7fa34d118000) at sql/sql_parse.cc:793

#17 0x0000000000739b14 in do_handle_one_connection (thd_arg=0x7fa34d118000) at sql/sql_connect.cc:1266

#18 0x00000000007395d3 in handle_one_connection (arg=0x7fa34d118000) at sql/sql_connect.cc:1181

#19 0x0000000000b836e3 in pfs_spawn_thread (arg=0x7fa3513ed760) at storage/perfschema/pfs.cc:1015

#20 0x00007fa3532bab50 in start_thread (arg=<optimized out>) at pthread_create.c:304

#21 0x00007fa351bc870d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

Thread 2 (Thread 0x7fa34cfb6700 (LWP 20676)):

#0  0x000000000058eace in base_list_iterator::next_fast (this=0x7fa34cfb3a10) at sql/sql_list.h:453

#1  0x00000000006a7373 in List_iterator_fast<Item_equal>::operator++ (this=0x7fa34cfb3a10) at sql/sql_list.h:569

#2  0x00000000006846a0 in substitute_for_best_equal_field (context_tab=0x1, cond=0x7fa34c445c98, cond_equal=0x7fa34c445d88, table_join_idx=0x7fa34c4dd098) at sql/sql_select.cc:12633

#3  0x0000000000667141 in JOIN::optimize (this=0x7fa34c44d818) at sql/sql_select.cc:1317

#4  0x000000000066d551 in mysql_select (thd=0x7fa34d118000, rref_pointer_array=0x7fa34c4d6a88, tables=0x7fa34c44c018, wild_num=0, fields=..., conds=0x7fa34c445c98, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2416184064, result=0x7fa34c444098, unit=0x7fa34c4d60c8, select_lex=0x7fa34c4d67c8) at sql/sql_select.cc:3080

#5  0x0000000000663e63 in handle_select (thd=0x7fa34d118000, lex=0x7fa34c4d6018, result=0x7fa34c444098, setup_tables_done_option=0) at sql/sql_select.cc:319

#6  0x000000000063c293 in execute_sqlcom_select (thd=0x7fa34d118000, all_tables=0x7fa34c44c018) at sql/sql_parse.cc:4689

#7  0x000000000063546c in mysql_execute_command (thd=0x7fa34d118000) at sql/sql_parse.cc:2234

#8  0x0000000000656b1b in Prepared_statement::execute (this=0x7fa34c4cc280, expanded_query=0x7fa34cfb4c50, open_cursor=false) at sql/sql_prepare.cc:3928

#9  0x0000000000655c32 in Prepared_statement::execute_loop (this=0x7fa34c4cc280, expanded_query=0x7fa34cfb4c50, open_cursor=false, packet=0x0, packet_end=0x0) at sql/sql_prepare.cc:3587

#10 0x0000000000653d56 in mysql_sql_stmt_execute (thd=0x7fa34d118000) at sql/sql_prepare.cc:2737

#11 0x000000000063549a in mysql_execute_command (thd=0x7fa34d118000) at sql/sql_parse.cc:2244

#12 0x000000000063ed98 in mysql_parse (thd=0x7fa34d118000, rawbuf=0x7fa34c41c0d8 "EXECUTE stmt", length=12, parser_state=0x7fa34cfb5610) at sql/sql_parse.cc:5909

#13 0x00000000006329b3 in dispatch_command (command=COM_QUERY, thd=0x7fa34d118000, packet=0x7fa34d18c001 "EXECUTE stmt", packet_length=12) at sql/sql_parse.cc:1079

#14 0x0000000000631b3f in do_command (thd=0x7fa34d118000) at sql/sql_parse.cc:793

#15 0x0000000000739b14 in do_handle_one_connection (thd_arg=0x7fa34d118000) at sql/sql_connect.cc:1266

#16 0x00000000007395d3 in handle_one_connection (arg=0x7fa34d118000) at sql/sql_connect.cc:1181

#17 0x0000000000b836e3 in pfs_spawn_thread (arg=0x7fa3513ed760) at storage/perfschema/pfs.cc:1015

#18 0x00007fa3532bab50 in start_thread (arg=<optimized out>) at pthread_create.c:304

#19 0x00007fa351bc870d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112