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  1. MariaDB Server
  2. MDEV-32719

Segmentation fault at /mariadb-11.3.0/sql/item.h:3690

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Duplicate
    • 10.6, 10.9, 10.10, 10.11, 11.0, 11.1, 11.2, 11.3.0
    • N/A
    • Server
    • None
    • Ubuntu 20.04

    Description

      Run these queries in debug build:

      CREATE TABLE x ( x BOOLEAN ) ;
      INSERT INTO x ( x ) VALUES ( 1 ) ;
      UPDATE x SET x = NULL WHERE x = ( SELECT 'x' / 'x' WHERE NULL BETWEEN ( SELECT x AS x FROM x AS x GROUP BY x ) AND 1 ) ;
      INSERT INTO x ( x ) VALUES ( 1 ) , ( 1 ) ;
      SELECT ( 1 + 1 ) / 1 AS x WHERE EXISTS ( SELECT 1 FROM ( SELECT x FROM x UNION SELECT x FROM x WHERE x < ( SELECT x FROM x GROUP BY x + 1 , x ) ) AS x WHERE x IN ( SELECT x FROM ( SELECT x = 'x' AND x = 1 FROM x WHERE x < ( WITH x AS ( SELECT NOT ( SELECT 1 WHERE ( SELECT x FROM x WHERE x != 1 GROUP BY x ) != x ) FROM x ) SELECT x FROM x GROUP BY x + 1 , x ) UNION SELECT x FROM x ) AS x GROUP BY x , x HAVING ( x IN ( SELECT x WHERE x = 'x' AND x IN ( SELECT x FROM x WHERE x = 'x' ) GROUP BY x HAVING ( x IN ( SELECT x WHERE x = 'x' AND x IN ( SELECT x FROM x WHERE x = 'x' ) ) AND x IS NULL AND x IN ( 1 , x = 1 AND x IN ( x NOT IN ( SELECT x ) ) , 1 , 1 , 1 ) ) ) AND x IS NULL AND x IN ( 1 , x = 1 AND x IN ( x NOT IN ( SELECT x FROM x ) ) , 1 , 1 , 1 ) ) ) ) ;
      

      Will trigger Segmentation fault.
      GDB info:

      #0  0x0000555557bcdf72 in Item_field::type_handler (this=0x629000156cf8) at /home/wx/mariadb-11.3.0/sql/item.h:3690
      #1  0x000055555703288f in Item_ref::type_handler (this=0x62d00002fa18) at /home/wx/mariadb-11.3.0/sql/item.h:5647
      #2  0x0000555556ea63b4 in Item::result_type (this=0x62d00002fa18) at /home/wx/mariadb-11.3.0/sql/item.h:1273
      #3  0x00005555570342b6 in Item_ref::check_cols (this=0x62d00002fa18, c=1) at /home/wx/mariadb-11.3.0/sql/item.h:5749
      #4  0x0000555557bb02cc in Item_ref::fix_fields (this=0x62f000008b70, thd=0x62c0001d0288, reference=0x7fffe33bdd10) at /home/wx/mariadb-11.3.0/sql/item.cc:8257
      #5  0x0000555557b9fa99 in Item_field::fix_fields (this=0x629000156cf8, thd=0x62c0001d0288, reference=0x62d000042730) at /home/wx/mariadb-11.3.0/sql/item.cc:6081
      #6  0x0000555556f0404f in Item::fix_fields_if_needed (this=0x629000156cf8, thd=0x62c0001d0288, ref=0x62d000042730) at /home/wx/mariadb-11.3.0/sql/item.h:1147
      #7  0x0000555557c6c9f2 in Item_func::fix_fields (this=0x62d0000426b0, thd=0x62c0001d0288, ref=0x0) at /home/wx/mariadb-11.3.0/sql/item_func.cc:349
      #8  0x000055555717464e in st_select_lex::pushdown_from_having_into_where (this=0x629000156820, thd=0x62c0001d0288, having=0x62d000042770) at /home/wx/mariadb-11.3.0/sql/sql_lex.cc:11284
      #9  0x00005555572c0714 in JOIN::optimize_inner (this=0x62d00002a350) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:2381
      #10 0x00005555572bbba6 in JOIN::optimize (this=0x62d00002a350) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:1944
      #11 0x0000555557143851 in st_select_lex::optimize_unflattened_subqueries (this=0x6290000f6160, const_only=false) at /home/wx/mariadb-11.3.0/sql/sql_lex.cc:4916
      #12 0x00005555577b7509 in JOIN::optimize_unflattened_subqueries (this=0x62d0000378f8) at /home/wx/mariadb-11.3.0/sql/opt_subselect.cc:5864
      #13 0x00005555572c91e7 in JOIN::optimize_stage2 (this=0x62d0000378f8) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:3229
      #14 0x00005555572c2f34 in JOIN::optimize_inner (this=0x62d0000378f8) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:2650
      #15 0x00005555572bbba6 in JOIN::optimize (this=0x62d0000378f8) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:1944
      #16 0x0000555557143851 in st_select_lex::optimize_unflattened_subqueries (this=0x6290000f5910, const_only=true) at /home/wx/mariadb-11.3.0/sql/sql_lex.cc:4916
      #17 0x00005555577b75f6 in JOIN::optimize_constant_subqueries (this=0x62d000035188) at /home/wx/mariadb-11.3.0/sql/opt_subselect.cc:5898
      #18 0x00005555572beb79 in JOIN::optimize_inner (this=0x62d000035188) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:2274
      #19 0x00005555572bbba6 in JOIN::optimize (this=0x62d000035188) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:1944
      #20 0x00005555572dd9ba in mysql_select (thd=0x62c0001d0288, tables=0x0, fields=..., conds=0x62d000034530, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2165049856, result=0x62d000035158, unit=0x62c0001d46d8, select_lex=0x6290000f5910) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:5235
      #21 0x00005555572ad18a in handle_select (thd=0x62c0001d0288, lex=0x62c0001d45f8, result=0x62d000035158, setup_tables_done_option=0) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:628
      #22 0x00005555571ce583 in execute_sqlcom_select (thd=0x62c0001d0288, all_tables=0x6290000f6d40) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:6013
      #23 0x00005555571becf6 in mysql_execute_command (thd=0x62c0001d0288, is_called_from_prepared_stmt=false) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:3912
      #24 0x00005555571d95e2 in mysql_parse (thd=0x62c0001d0288, rawbuf=0x6290000f52a8 "SELECT ( 1 + 1 ) / 1 AS x WHERE EXISTS ( SELECT 1 FROM ( SELECT x FROM x UNION SELECT x FROM x WHERE x < ( SELECT x FROM x GROUP BY x + 1 , x ) ) AS x WHERE x IN ( SELECT x FROM ( SELECT x = 'x' AND x"..., length=766, parser_state=0x7fffe33c0870) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:7734
      #25 0x00005555571b1237 in dispatch_command (command=COM_QUERY, thd=0x62c0001d0288, packet=0x6290000fa289 " SELECT ( 1 + 1 ) / 1 AS x WHERE EXISTS ( SELECT 1 FROM ( SELECT x FROM x UNION SELECT x FROM x WHERE x < ( SELECT x FROM x GROUP BY x + 1 , x ) ) AS x WHERE x IN ( SELECT x FROM ( SELECT x = 'x' AND "..., packet_length=770, blocking=true) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:1893
      #26 0x00005555571adf7c in do_command (thd=0x62c0001d0288, blocking=true) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:1406
      #27 0x000055555768e557 in do_handle_one_connection (connect=0x611000071548, put_in_cache=true) at /home/wx/mariadb-11.3.0/sql/sql_connect.cc:1445
      #28 0x000055555768deb4 in handle_one_connection (arg=0x611000071408) at /home/wx/mariadb-11.3.0/sql/sql_connect.cc:1347
      #29 0x00005555582fa350 in pfs_spawn_thread (arg=0x618000005108) at /home/wx/mariadb-11.3.0/storage/perfschema/pfs.cc:2201
      #30 0x00007ffff7115609 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
      #31 0x00007ffff6ce8133 in clone () from /lib/x86_64-linux-gnu/libc.so.6
      

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              Xin Wen Xin Wen
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                Updated:
                Resolved:

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