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  1. MariaDB Server
  2. MDEV-32761

Segmentation fault at /mariadb-11.3.0/sql/sql_select.cc:18005

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Details

    • Bug
    • Status: Confirmed (View Workflow)
    • Major
    • Resolution: Unresolved
    • 11.3.0, 10.4(EOL), 10.5, 10.6, 10.9(EOL), 10.10(EOL), 10.11, 11.0(EOL), 11.1(EOL), 11.2(EOL)
    • 10.5, 10.6, 10.11
    • Server
    • None
    • Ubuntu 20.04

    Description

      Run these queries in debug build:

      CREATE TABLE t0 ( c55 INT , c50 INT ) ;
      INSERT INTO t0 VALUES ( 48 , -126 ) , ( -123 , 118 ) ;
      CREATE INDEX i0 ON t0 ( c50 ) ;
      INSERT INTO t0 VALUES ( ) , ( ) ;
      SELECT VAR_SAMP( c50 ) AS c11 FROM ( SELECT c50 IN ( 'Et28CWS$_' IN ( SQRT ( 104 ) BETWEEN -90 AND 26 , 63 , -82 ) , ASIN ( -46 ) = 92 , 30 ) AS c58 FROM t0 ) AS t1 JOIN t0 ON NULLIF ( LENGTH ( c58 ) , 8 ) = t0 . c55 GROUP BY c55 , c50 HAVING c55 = NULLIF ( COUNT( * ) , 68 ) ;

      Will trigger Segmentation fault.
      GDB info:
      #0 0x0000555557335f93 in compare_fields_by_table_order (field1=0x6290001d7b68, field2=0x6290001d7420, table_join_idx=0x6290001dc690) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:18005
      #1 0x0000555557c3bdcb in bubble_sort<Item> (list_to_sort=0x6290001dbba8, sort_func=0x555557335b9a <compare_fields_by_table_order(Item*, Item*, void*)>, arg=0x6290001dc690) at /home/wx/mariadb-11.3.0/sql/sql_list.h:655
      #2 0x0000555557c24088 in Item_equal::sort (this=0x6290001dbaf0, compare=0x555557335b9a <compare_fields_by_table_order(Item*, Item*, void*)>, arg=0x6290001dc690) at /home/wx/mariadb-11.3.0/sql/item_cmpfunc.cc:7057
      #3 0x0000555557338156 in substitute_for_best_equal_field (thd=0x62c0001e0288, context_tab=0x1, cond=0x6290001dbc90, cond_equal=0x6290001dbd68, table_join_idx=0x6290001dc690, do_substitution=true) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:18406
      #4 0x00005555572c4538 in JOIN::optimize_stage2 (this=0x6290001d8978) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:2774
      #5 0x00005555572c2f34 in JOIN::optimize_inner (this=0x6290001d8978) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:2650
      #6 0x00005555572bbba6 in JOIN::optimize (this=0x6290001d8978) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:1944
      #7 0x00005555572dd9ba in mysql_select (thd=0x62c0001e0288, tables=0x6290000f8310, fields=..., conds=0x0, og_num=2, order=0x0, group=0x6290001d7548, having=0x6290001d7dc8, proc_param=0x0, select_options=2165049856, result=0x6290001d8948, unit=0x62c0001e46d8, select_lex=0x6290000f5540) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:5235
      #8 0x00005555572ad18a in handle_select (thd=0x62c0001e0288, lex=0x62c0001e45f8, result=0x6290001d8948, setup_tables_done_option=0) at /home/wx/mariadb-11.3.0/sql/sql_select.cc:628
      #9 0x00005555571ce583 in execute_sqlcom_select (thd=0x62c0001e0288, all_tables=0x6290000f8310) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:6013
      #10 0x00005555571becf6 in mysql_execute_command (thd=0x62c0001e0288, is_called_from_prepared_stmt=false) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:3912
      #11 0x00005555571d95e2 in mysql_parse (thd=0x62c0001e0288, rawbuf=0x6290000f52a8 "SELECT VAR_SAMP( c50 ) AS c11 FROM ( SELECT c50 IN ( 'Et28CWS$_' IN ( SQRT ( 104 ) BETWEEN -90 AND 26 , 63 , -82 ) , ASIN ( -46 ) = 92 , 30 ) AS c58 FROM t0 ) AS t1 JOIN t0 ON NULLIF ( LENGTH ( c58 ) "..., length=275, parser_state=0x7fffd162c870) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:7734
      #12 0x00005555571b1237 in dispatch_command (command=COM_QUERY, thd=0x62c0001e0288, packet=0x6290000fa289 "SELECT VAR_SAMP( c50 ) AS c11 FROM ( SELECT c50 IN ( 'Et28CWS$_' IN ( SQRT ( 104 ) BETWEEN -90 AND 26 , 63 , -82 ) , ASIN ( -46 ) = 92 , 30 ) AS c58 FROM t0 ) AS t1 JOIN t0 ON NULLIF ( LENGTH ( c58 ) "..., packet_length=278, blocking=true) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:1893
      #13 0x00005555571adf7c in do_command (thd=0x62c0001e0288, blocking=true) at /home/wx/mariadb-11.3.0/sql/sql_parse.cc:1406
      #14 0x000055555768e557 in do_handle_one_connection (connect=0x61100004ea48, put_in_cache=true) at /home/wx/mariadb-11.3.0/sql/sql_connect.cc:1445
      #15 0x000055555768deb4 in handle_one_connection (arg=0x61100004e908) at /home/wx/mariadb-11.3.0/sql/sql_connect.cc:1347
      #16 0x00005555582fa350 in pfs_spawn_thread (arg=0x618000005508) at /home/wx/mariadb-11.3.0/storage/perfschema/pfs.cc:2201
      #17 0x00007ffff7115609 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
      #18 0x00007ffff6ce8133 in clone () from /lib/x86_64-linux-gnu/libc.so.6

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            psergei Sergei Petrunia
            Xin Wen Xin Wen
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            Dates

              Created:
              Updated:

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