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  1. MariaDB Server
  2. MDEV-4272

DIV operator crashes in Item_func_int_div::val_int

    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 10.0.1, 5.5.30
    • Fix Version/s: 10.0.2, 5.5.31
    • Component/s: None
    • Labels:
      None
    • Environment:
      WinX64, Linux x64

      Description

      Initial valgrind error from maria revno 3503: (release build)

      Invalid read of size 8
      at: Item_func_int_div::val_int (my_decimal.h:95)
      by: Item::send (item.cc:6370)
      by: Protocol::send_result_set_row (protocol.cc:900)
      by: select_send::send_data (sql_class.cc:2448)
      by: end_send (sql_select.cc:17355)
      by: evaluate_join_record (sql_select.cc:16478)
      by: sub_select (sql_select.cc:16259)
      by: do_select (sql_select.cc:15929)
      by: JOIN::exec_inner (sql_select.cc:2964)
      by: JOIN::exec (sql_select.cc:2255)
      by: mysql_select (sql_select.cc:3192)
      by: handle_select (sql_select.cc:363)
      by: execute_sqlcom_select (sql_parse.cc:5004)
      by: mysql_execute_command (sql_parse.cc:2472)
      by: mysql_parse (sql_parse.cc:6124)
      by: dispatch_command (sql_parse.cc:1266)
      by: do_handle_one_connection (sql_connect.cc:1267)
      by: handle_one_connection (sql_connect.cc:1181)
      by: start_thread (pthread_create.c:309)
      by: clone (clone.S:115)
       Address 0x0 is not stack'd, malloc'd or (recently) free'd

      drop table if exists c;
      create table c(a int) select null;
      select 1 div convert(a using utf8) from c;

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            • Assignee:
              sanja Oleksandr Byelkin
              Reporter:
              sbester1 sbester1
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              Dates

              • Created:
                Updated:
                Resolved: