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  1. MariaDB Server
  2. MDEV-27842

SIGSEGV in replace_routine_table on GRANT

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      SET sql_mode='';
      SET log_bin_trust_function_creators=1;
      RENAME TABLE mysql.procs_priv TO mysql.procs_priv_bak;
      USE mysql;
      CREATE TABLE procs_priv (dummy INT);
      CREATE FUNCTION f() RETURNS INT RETURN (SELECT 1 t);
      GRANT EXECUTE ON FUNCTION f TO a@b;
      

      Leads to:

      10.9.0 b5852ffbeebc3000982988383daeefb0549e058a (Debug)

      Core was generated by `/test/MD140222-mariadb-10.9.0-linux-x86_64-dbg/bin/mysqld --no-defaults --core-'.
      Program terminated with signal SIGSEGV, Segmentation fault.
      #0  0x00005557948dca2c in replace_routine_table (thd=thd@entry=0x154830000db8, 
          grant_name=grant_name@entry=0x5557975e5518, table=0x15483007b148, 
          combo=..., db=<optimized out>, db@entry=0x154830014648 "mysql", 
          routine_name=routine_name@entry=0x154830013ec8 "f", sph=
          0x555795f49688 <sp_handler_function>, rights=EXECUTE_ACL, 
          revoke_grant=false) at /test/10.9_dbg/sql/sql_acl.cc:5957
      5957	  table->field[1]->store(db,(uint) strlen(db), &my_charset_latin1);
      [Current thread is 1 (Thread 0x15488c1e9700 (LWP 2861119))]
      (gdb) bt
      #0  0x00005557948dca2c in replace_routine_table (thd=thd@entry=0x154830000db8, grant_name=grant_name@entry=0x5557975e5518, table=0x15483007b148, combo=@0x154830013f28: {<AUTHID> = {user = {str = 0x154830013f18 "a", length = 1}, host = {str = 0x154830013f20 "b", length = 1}}, auth = 0x555795ff29a0 <auth_no_password>}, db=<optimized out>, db@entry=0x154830014648 "mysql", routine_name=routine_name@entry=0x154830013ec8 "f", sph=0x555795f49688 <sp_handler_function>, rights=EXECUTE_ACL, revoke_grant=false) at /test/10.9_dbg/sql/sql_acl.cc:5957
      #1  0x00005557948fc7c0 in mysql_routine_grant (thd=thd@entry=0x154830000db8, table_list=0x154830013f68, sph=0x555795f49688 <sp_handler_function>, user_list=@0x154830006060: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x154830013f50, last = 0x154830013f50, elements = 1}, <No data fields>}, rights=rights@entry=EXECUTE_ACL, revoke_grant=false, write_to_binlog=true) at /test/10.9_dbg/sql/sql_acl.cc:7327
      #2  0x00005557948fcfbc in Sql_cmd_grant_sp::execute (this=0x154830014650, thd=0x154830000db8) at /test/10.9_dbg/sql/sql_acl.h:317
      #3  0x00005557949ae80e in mysql_execute_command (thd=thd@entry=0x154830000db8, is_called_from_prepared_stmt=is_called_from_prepared_stmt@entry=false) at /test/10.9_dbg/sql/sql_parse.cc:5988
      #4  0x0000555794995315 in mysql_parse (thd=thd@entry=0x154830000db8, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x15488c1e8400) at /test/10.9_dbg/sql/sql_parse.cc:8027
      #5  0x00005557949a3fb1 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x154830000db8, packet=packet@entry=0x15483000b889 "GRANT EXECUTE ON FUNCTION f TO a@b", packet_length=packet_length@entry=34, blocking=blocking@entry=true) at /test/10.9_dbg/sql/sql_class.h:1362
      #6  0x00005557949a73f8 in do_command (thd=0x154830000db8, blocking=blocking@entry=true) at /test/10.9_dbg/sql/sql_parse.cc:1402
      #7  0x0000555794b21fc4 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x5557975d4048, put_in_cache=put_in_cache@entry=true) at /test/10.9_dbg/sql/sql_connect.cc:1418
      #8  0x0000555794b225c9 in handle_one_connection (arg=arg@entry=0x5557975d4048) at /test/10.9_dbg/sql/sql_connect.cc:1312
      #9  0x0000555794fa8d67 in pfs_spawn_thread (arg=0x5557974e7268) at /test/10.9_dbg/storage/perfschema/pfs.cc:2201
      #10 0x00001548b0d95609 in start_thread (arg=<optimized out>) at pthread_create.c:477
      #11 0x00001548b0983293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
      

      Bug confirmed present in:
      MariaDB: 10.2.42 (dbg), 10.2.42 (opt), 10.3.33 (dbg), 10.3.33 (opt), 10.4.23 (dbg), 10.4.23 (opt), 10.5.14 (dbg), 10.5.14 (opt), 10.6.6 (dbg), 10.6.6 (opt), 10.7.2 (dbg), 10.7.2 (opt), 10.8.1 (dbg), 10.8.1 (opt), 10.9.0 (dbg), 10.9.0 (opt)

      Bug (or feature/syntax) confirmed not present in:
      MySQL: 5.5.62 (dbg), 5.5.62 (opt), 5.6.51 (dbg), 5.6.51 (opt), 5.7.36 (dbg), 5.7.36 (opt), 8.0.27 (dbg), 8.0.27 (opt)

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            Assignee:
            Elkin Andrei Elkin
            Reporter:
            Roel Roel Van de Paar
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              Dates

              Created:
              Updated:

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