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  1. MariaDB Server
  2. MDEV-32392

Segmentation fault at /mariadb-11.3.0/sql/sql_select.cc:14639

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Duplicate
    • 11.3.0
    • N/A
    • Server
    • None
    • Ubuntu 20.04

    Description

      Run these queries in release build:

      CREATE TABLE t0 ( c36 VARCHAR ( 72 ) , INDEX i0 ( c36 ( 10 ) ) ) ;
      INSERT INTO t0 VALUES ( 123 ) , ( 7 ) ;
      ALTER TABLE t0 ADD COLUMN c34 INT AFTER c36 ;
      INSERT INTO t0 VALUES ( 5 , 36 ) , ( 37 , 70 ) ;
      SELECT t1 . c36 AS c50 , t0 . c34 AS c44 , -101 AS c56 FROM ( t0 , t0 AS t1 ) UNION SELECT RAND ( ) <= EXISTS ( SELECT t2 . c34 AS c37 FROM t0 AS t2 JOIN t0 INNER JOIN t0 AS t3 USING ( c34 , c36 ) ON t2 . c36 = t3 . c34 EXCEPT SELECT c36 + ( SELECT c36 AS c55 FROM t0 WHERE t0 . c36 >= 95.303926 = RAND ( ) / TRIM( t0 . c34 FROM 'Z\'<bvJ]#1)?(STg:+ecV\'2CK
      #N3unVs@?8' ) = 128 GROUP BY c36 , c34 HAVING c36 = -87 LIMIT 1 ) AS c49 FROM t0 WHERE c34 < -33 LIMIT 50 ) >> ~ EXP ( t0 . c34 ) AS c16 , -90 AS c31 , -73 AS c22 FROM t0 WHERE c36 < 46 ;

      Will trigger Segmentation fault.
      GDB info:
      Thread 17 "mariadbd" received signal SIGSEGV, Segmentation fault.
      [Switching to Thread 0x7fffd1c17300 (LWP 2592)]
      0x0000000000c684a2 in rr_unlock_row (tab=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:14639
      14639 info->table->file->unlock_row();

      #0 0x0000000000c684a2 in rr_unlock_row (tab=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:14639
      #1 0x0000000000c9e243 in evaluate_join_record (join=<optimized out>, join@entry=0x6290000bbb30, join_tab=<optimized out>, join_tab@entry=0x62d0000df298, error=error@entry=0) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:23711
      #2 0x0000000000be3396 in sub_select (join=0x6290000bbb30, join_tab=0x62d0000df298, end_of_records=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:23444
      #3 0x0000000000c9e284 in evaluate_join_record (join=join@entry=0x6290000bbb30, join_tab=<optimized out>, join_tab@entry=0x62d0000dee20, error=error@entry=0) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:23677
      #4 0x0000000000be3396 in sub_select (join=0x6290000bbb30, join_tab=0x62d0000dee20, end_of_records=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:23444
      #5 0x0000000000c45121 in do_select (join=0x6290000bbb30, procedure=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:22961
      #6 JOIN::exec_inner (this=0x6290000bbb30) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:4941
      #7 0x0000000000c428e9 in JOIN::exec (this=0x6290000bbb30) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:4718
      #8 0x0000000000df0df7 in st_select_lex_unit::exec_inner (this=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_union.cc:2389
      #9 0x00000000015d8bb5 in subselect_union_engine::exec (this=<optimized out>) at /home/wx/mariadb-11.3.0/sql/item_subselect.cc:4187
      #10 0x00000000015b3edc in Item_subselect::exec (this=0x6290000b77e0) at /home/wx/mariadb-11.3.0/sql/item_subselect.cc:812
      #11 0x00000000015bda3d in Item_exists_subselect::val_int (this=0x6290000b77e0) at /home/wx/mariadb-11.3.0/sql/item_subselect.cc:1840
      #12 0x00000000014c3f06 in Item::to_longlong_null (this=0x6290000b77e0) at /home/wx/mariadb-11.3.0/sql/item.h:1452
      #13 Func_handler_shift_right_int_to_ulonglong::to_longlong_null (this=<optimized out>, item=<optimized out>) at /home/wx/mariadb-11.3.0/sql/item_func.cc:2223
      #14 0x0000000001413062 in Item_handled_func::Handler_int::val_int (this=0x8, item=0x6290000b7cf0) at /home/wx/mariadb-11.3.0/sql/item_func.h:696
      #15 0x0000000001412fd6 in Item_handled_func::Handler_int::val_real (this=0x8, item=0xc3200015801) at /home/wx/mariadb-11.3.0/sql/item_func.h:682
      #16 0x00000000013b09df in Arg_comparator::compare_real (this=0x6290000b7e68) at /home/wx/mariadb-11.3.0/sql/item_cmpfunc.cc:848
      #17 0x00000000013b62ab in Arg_comparator::compare (this=<optimized out>) at /home/wx/mariadb-11.3.0/sql/item_cmpfunc.h:104
      #18 Item_func_le::val_int (this=0x6290000b7db0) at /home/wx/mariadb-11.3.0/sql/item_cmpfunc.cc:1827
      #19 0x00000000013552b8 in Item::save_int_in_field (this=0x6290000b7db0, field=0x6190000c03b8, no_conversions=false) at /home/wx/mariadb-11.3.0/sql/item.cc:6843
      #20 0x00000000013554a9 in Item::save_in_field (this=0x6290000b7db0, field=0x6190000c03b8, no_conversions=false) at /home/wx/mariadb-11.3.0/sql/item.cc:6853
      #21 0x00000000009d9dc9 in fill_record (thd=<optimized out>, table=<optimized out>, ptr=0x62000006b998, values=..., ignore_errors=<optimized out>, use_value=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_base.cc:9320
      #22 0x0000000000de507b in select_unit::send_data (this=0x6290000ba408, values=...) at /home/wx/mariadb-11.3.0/sql/sql_union.cc:122
      #23 0x0000000000c36f9a in select_result_sink::send_data_with_check (this=0x8, items=..., u=<optimized out>, sent=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_class.h:5842
      #24 end_send (join=0x6290000baed8, join_tab=0x62d0000d6fe0, end_of_records=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:24710
      #25 0x0000000000c9e284 in evaluate_join_record (join=join@entry=0x6290000baed8, join_tab=<optimized out>, join_tab@entry=0x62d0000d6b68, error=error@entry=0) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:23677
      #26 0x0000000000be340f in sub_select (join=0x6290000baed8, join_tab=0x62d0000d6b68, end_of_records=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:23481
      #27 0x0000000000c45121 in do_select (join=0x6290000baed8, procedure=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:22961
      #28 JOIN::exec_inner (this=0x6290000baed8) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:4941
      #29 0x0000000000c428e9 in JOIN::exec (this=0x6290000baed8) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:4718
      #30 0x0000000000df0df7 in st_select_lex_unit::exec_inner (this=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_union.cc:2389
      #31 0x0000000000de4314 in st_select_lex_unit::exec (this=this@entry=0x62b0001704a8) at /home/wx/mariadb-11.3.0/sql/sql_union.cc:2292
      #32 0x0000000000dde8ef in mysql_union (thd=thd@entry=0x62b00016c218, lex=lex@entry=0x62b0001703c8, result=result@entry=0x6290000ba3d8, unit=unit@entry=0x62b0001704a8, setup_tables_done_option=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_union.cc:45
      #33 0x0000000000be42e3 in handle_select (thd=thd@entry=0x62b00016c218, lex=lex@entry=0x62b0001703c8, result=<optimized out>, result@entry=0x6290000ba3d8, setup_tables_done_option=108370615584084, setup_tables_done_option@entry=0) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:618
      #34 0x0000000000b3df18 in execute_sqlcom_select (thd=0x62b00016c218, all_tables=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:6013
      #35 0x0000000000b2cd51 in mysql_execute_command (thd=0x62b00016c218, is_called_from_prepared_stmt=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:3912
      #36 0x0000000000b1fe79 in mysql_parse (thd=thd@entry=0x62b00016c218, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>, parser_state@entry=0x7fffd1c15a80) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:7734
      #37 0x0000000000b19069 in dispatch_command (command=<optimized out>, thd=0x62b00016c218, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:1893
      #38 0x0000000000b20b71 in do_command (thd=0x62b00016c218, blocking=true) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:1406
      #39 0x0000000000f03476 in do_handle_one_connection (connect=<optimized out>, put_in_cache=<optimized out>) at /home/wx/mariadb-11.3.0/sql/sql_connect.cc:1445
      #40 0x0000000000f02eb9 in handle_one_connection (arg=arg@entry=0x608001425fb8) at /home/wx/mariadb-11.3.0/sql/sql_connect.cc:1347
      #41 0x0000000001a00c1b in pfs_spawn_thread (arg=0x617000006618) at /home/wx/mariadb-11.3.0/storage/perfschema/pfs.cc:2201
      #42 0x00007ffff79f7609 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
      #43 0x00007ffff770f133 in clone () from /lib/x86_64-linux-gnu/libc.so.6

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            Xin Wen Xin Wen
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              Created:
              Updated:
              Resolved:

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