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  1. MariaDB Server
  2. MDEV-5732

Valgrind warning for index_merge and extended_keys

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 10.0.9
    • Fix Version/s: 10.0.9
    • Component/s: None
    • Labels:
      None

      Description

      Below is an extract of index_merge_innodb.test which started to cause a valgrind failure after default optimizer_switch was changed to include 'extended_keys=ON':

      # Slow test, don't run during staging part
      --source include/not_staging.inc
      --source include/have_xtradb.inc
       
      let $engine_type= InnoDB;
       
      set @optimizer_switch_save= @@optimizer_switch;
      set optimizer_switch='index_merge_sort_intersection=off';
       
      eval SET SESSION STORAGE_ENGINE = $engine_type;
       
      --disable_warnings
      drop table if exists t1;
      --enable_warnings
       
      # Testcase for BUG#4984
      create table t1
      (
        RUNID varchar(22),
        SUBMITNR varchar(5),
        ORDERNR char(1),
        PROGRAMM varchar(8),
        TESTID varchar(4),
        UCCHECK char(1),
        ETEXT varchar(80),
        ETEXT_TYPE char(1),
        INFO char(1),
        SEVERITY tinyint(3),
        TADIRFLAG char(1),
        PRIMARY KEY  (RUNID,SUBMITNR,ORDERNR,PROGRAMM,TESTID,UCCHECK),
        KEY `TVERM~KEY`  (PROGRAMM,TESTID,UCCHECK)
      ) DEFAULT CHARSET=latin1;
       
      update t1 set `ETEXT` = '', `ETEXT_TYPE`='', `INFO`='', `SEVERITY`='', `TADIRFLAG`=''
      WHERE
       `RUNID`= '' AND `SUBMITNR`= '' AND `ORDERNR`='' AND `PROGRAMM`='' AND
       `TESTID`='' AND `UCCHECK`='';
       
      drop table t1;
      set optimizer_switch= @optimizer_switch_save;

      ==3333== Thread 16:
      ==3333== Conditional jump or move depends on uninitialised value(s)
      ==3333==    at 0x947AF3: is_key_scan_ror(PARAM*, unsigned int, unsigned char) (opt_range.cc:10621)
      ==3333==    by 0x932DC6: sel_arg_range_seq_next(void*, st_key_multi_range*) (opt_range_mrr.cc:293)
      ==3333==    by 0x793F6A: handler::multi_range_read_info_const(unsigned int, st_range_seq_if*, void*, unsigned int, unsigned int*, unsigned int*, COST_VECT*) (multi_range_read.cc:71)
      ==3333==    by 0x79711C: DsMrr_impl::dsmrr_info_const(unsigned int, st_range_seq_if*, void*, unsigned int, unsigned int*, unsigned int*, COST_VECT*) (multi_range_read.cc:1451)
      ==3333==    by 0xB490AD: ha_innobase::multi_range_read_info_const(unsigned int, st_range_seq_if*, void*, unsigned int, unsigned int*, unsigned int*, COST_VECT*) (ha_innodb.cc:14134)
      ==3333==    by 0x947690: check_quick_select(PARAM*, unsigned int, bool, SEL_ARG*, bool, unsigned int*, unsigned int*, COST_VECT*) (opt_range.cc:10507)
      ==3333==    by 0x93FD8C: get_key_scans_params(PARAM*, SEL_TREE*, bool, bool, double) (opt_range.cc:7162)
      ==3333==    by 0x937454: SQL_SELECT::test_quick_select(THD*, Bitmap<64u>, unsigned long long, unsigned long long, bool, bool) (opt_range.cc:3118)
      ==3333==    by 0x704042: SQL_SELECT::check_quick(THD*, bool, unsigned long long) (opt_range.h:997)
      ==3333==    by 0x6FDD12: mysql_update(THD*, TABLE_LIST*, List<Item>&, List<Item>&, Item*, unsigned int, st_order*, unsigned long long, enum_duplicates, bool, unsigned long long*, unsigned long long*) (sql_update.cc:419)
      ==3333==    by 0x634B2D: mysql_execute_command(THD*) (sql_parse.cc:3053)
      ==3333==    by 0x63D444: mysql_parse(THD*, char*, unsigned int, Parser_state*) (sql_parse.cc:6101)
      ==3333==    by 0x62FFB2: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1113)
      ==3333==    by 0x62F396: do_command(THD*) (sql_parse.cc:819)
      ==3333==    by 0x752AF6: do_handle_one_connection(THD*) (sql_connect.cc:1266)
      ==3333==    by 0x752864: handle_one_connection (sql_connect.cc:1181)
      ^ Found warnings in /run/shm/var_auto_SW5b/log/mysqld.1.err

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            Assignee:
            psergei Sergei Petrunia
            Reporter:
            psergei Sergei Petrunia
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              Dates

              Created:
              Updated:
              Resolved:

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