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  1. MariaDB Server
  2. MDEV-29550

Valgrind/MSAN uninitialised value errors upon SHOW PROCEDURE STATUS with condition on Db

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: N/A
    • Fix Version/s: 10.11.0
    • Component/s: Server
    • Labels:
      None

      Description

      CREATE PROCEDURE p() SELECT 1;
      SHOW PROCEDURE STATUS WHERE DB = 'test';
      DROP PROCEDURE p;
      

      preview-10.11-mdev20609-is_parameters 7342ba99bc Valgrind

      ==1922390== Conditional jump or move depends on uninitialised value(s)
      ==1922390==    at 0x9991C2: Binary_string::c_ptr() (sql_string.h:644)
      ==1922390==    by 0xBCA2A0: fill_schema_proc(THD*, TABLE_LIST*, Item*) (sql_show.cc:6830)
      ==1922390==    by 0xBD464A: get_schema_tables_result(JOIN*, enum_schema_table_state) (sql_show.cc:9023)
      ==1922390==    by 0xB6026C: JOIN::exec_inner() (sql_select.cc:4770)
      ==1922390==    by 0xB5F5CE: JOIN::exec() (sql_select.cc:4591)
      ==1922390==    by 0xB60EFF: mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) (sql_select.cc:5071)
      ==1922390==    by 0xB4FF41: handle_select(THD*, LEX*, select_result*, unsigned long) (sql_select.cc:582)
      ==1922390==    by 0xAF72CB: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:6261)
      ==1922390==    by 0xAEE4EB: mysql_execute_command(THD*, bool) (sql_parse.cc:3945)
      ==1922390==    by 0xAFC0E9: mysql_parse(THD*, char*, unsigned int, Parser_state*) (sql_parse.cc:8037)
      ==1922390==    by 0xAE85A4: dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) (sql_parse.cc:1894)
      ==1922390==    by 0xAE6F7D: do_command(THD*, bool) (sql_parse.cc:1407)
      ==1922390==    by 0xCC872D: do_handle_one_connection(CONNECT*, bool) (sql_connect.cc:1418)
      ==1922390==    by 0xCC83CC: handle_one_connection (sql_connect.cc:1312)
      ==1922390==    by 0x11E19D1: pfs_spawn_thread (pfs.cc:2201)
      ==1922390==    by 0x4CE3EA6: start_thread (pthread_create.c:477)
      

      preview-10.11-mdev20609-is_parameters 7342ba99bc MSAN

      ==46489==WARNING: MemorySanitizer: use-of-uninitialized-value
          #0 0x559da3069812 in Binary_string::c_ptr() /home/jenkins/workspace/Source-Build-Test/src/sql/sql_string.h:644:9
          #1 0x559da3069812 in fill_schema_proc(THD*, TABLE_LIST*, Item*) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_show.cc:6830:29
          #2 0x559da307a2ea in get_schema_tables_result(JOIN*, enum_schema_table_state) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_show.cc:9023:11
          #3 0x559da2f257c9 in JOIN::exec_inner() /home/jenkins/workspace/Source-Build-Test/src/sql/sql_select.cc:4770:7
          #4 0x559da2f22b4c in JOIN::exec() /home/jenkins/workspace/Source-Build-Test/src/sql/sql_select.cc:4591:3
          #5 0x559da2e89e72 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_select.cc:5071:9
          #6 0x559da2e88bb8 in handle_select(THD*, LEX*, select_result*, unsigned long) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_select.cc:582:10
          #7 0x559da2d5ccec in execute_sqlcom_select(THD*, TABLE_LIST*) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_parse.cc:6261:12
          #8 0x559da2d369f5 in mysql_execute_command(THD*, bool) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_parse.cc:3945:12
          #9 0x559da2d1d877 in mysql_parse(THD*, char*, unsigned int, Parser_state*) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_parse.cc:8037:18
          #10 0x559da2d11c5d in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_parse.cc:1894:7
          #11 0x559da2d1fc6f in do_command(THD*, bool) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_parse.cc:1407:17
          #12 0x559da33b9fc6 in do_handle_one_connection(CONNECT*, bool) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_connect.cc:1418:11
          #13 0x559da33b9515 in handle_one_connection /home/jenkins/workspace/Source-Build-Test/src/sql/sql_connect.cc:1312:5
          #14 0x559da477000a in pfs_spawn_thread /home/jenkins/workspace/Source-Build-Test/src/storage/perfschema/pfs.cc:2201:3
          #15 0x7f9fc1008608 in start_thread /build/glibc-eX1tMB/glibc-2.31/nptl/pthread_create.c:477:8
          #16 0x7f9fc0d0d292 in clone /build/glibc-eX1tMB/glibc-2.31/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
       
        Uninitialized value was created by an allocation of 'keybuf' in the stack frame of function '_Z16fill_schema_procP3THDP10TABLE_LISTP4Item'
          #0 0x559da3068010 in fill_schema_proc(THD*, TABLE_LIST*, Item*) /home/jenkins/workspace/Source-Build-Test/src/sql/sql_show.cc:6763
      

      It should have been visible in the new buildbot on MSAN builder.

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              Assignee:
              oleg.smirnov Oleg Smirnov
              Reporter:
              elenst Elena Stepanova
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                Updated:
                Resolved:

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