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  1. MariaDB Server
  2. MDEV-29532

Connect engine crash with MySQL 8

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    Details

    • Type: Bug
    • Status: Open (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 10.6.9, 10.7.5
    • Fix Version/s: 10.6, 10.7, 10.8
    • Labels:
    • Environment:
      pkg_name: MariaDB-server
      pkg_release: 1.el7.centos
      pkg_vendor: MariaDB Foundation
      pkg_version: 10.7.5

      Description

      If a MySQL 8 server allows a remote connection, attempts to use CONNECT engine causes a crash:

      MariaDB [(none)]> CREATE OR REPLACE TABLE test.t1 ENGINE = CONNECT TABLE_TYPE = MYSQL CONNECTION= 'mysql://foo:bar@mysql8:3306/foo/bar';
      ERROR 1105 (HY000): (1130) Host '192.168.100.100' is not allowed to connect to this MySQL server
       
      mysql> create user 'random'@'%' identified by 'SDfkhskj53!';
      Query OK, 0 rows affected (0.00 sec)
       
      mysql> drop database if exists foo;
      Query OK, 0 rows affected, 1 warning (0.00 sec)
       
      MariaDB [(none)]> CREATE OR REPLACE TABLE test.t1 ENGINE = CONNECT TABLE_TYPE = MYSQL CONNECTION= 'mysql://foo:bar@mysql8:3306/foo/bar';
      ERROR 2013 (HY000): Lost connection to server during query
      

      220914  4:38:43 [ERROR] mysqld got signal 11 ;
      This could be because you hit a bug. It is also possible that this binary
      or one of the libraries it was linked against is corrupt, improperly built,
      or misconfigured. This error can also be caused by malfunctioning hardware.
       
      To report this bug, see https://mariadb.com/kb/en/reporting-bugs
       
      We will try our best to scrape up some info that will hopefully help
      diagnose the problem, but since we have already crashed,
      something is definitely wrong and this may fail.
       
      Server version: 10.7.5-MariaDB-log
      key_buffer_size=134217728
      read_buffer_size=131072
      max_used_connections=1
      max_threads=153
      thread_count=1
      It is possible that mysqld could use up to
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467995 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0x7fcb180009b8
      Attempting backtrace. You can use the following information to find out
      where mysqld died. If you see no messages after this, something went
      terribly wrong...
      stack_bottom = 0x7fcb24beecc0 thread_stack 0x49000
      /usr/sbin/mariadbd(my_print_stacktrace+0x2e)[0x5625a1bd347e]
      /usr/sbin/mariadbd(handle_fatal_signal+0x307)[0x5625a1641df7]
      sigaction.c:0(__restore_rt)[0x7fcb4fe7f630]
      /usr/sbin/mariadbd(+0x9ea8f7)[0x5625a16148f7]
      /usr/sbin/mariadbd(mysql_close+0x22)[0x5625a1617eb2]
      connect/myconn.cpp:541(MYSQLC::Open(_global*, char const*, char const*, char const*, char const*, int, char const*))[0x7fcb4c20e3e9]
      connect/myconn.cpp:156(MyColumns(_global*, THD*, char const*, char const*, char const*, char const*, char const*, char const*, int, bool))[0x7fcb4c20fc98]
      connect/ha_connect.cc:6087(CheckSelf(_global*, TABLE_SHARE*, char const*, char const*, char const*, char const*, int))[0x7fcb4c1d556d]
      /usr/sbin/mariadbd(_Z17create_table_implP3THDP16st_ddl_log_stateS2_RK25st_mysql_const_lex_stringS5_S5_S5_S5_14DDL_options_stP14HA_CREATE_INFOP10Alter_infoiPbPP6st_keyPjP34st_mysql_const_unsigned_lex_string+0x658)[0x5625a14b2628]
      /usr/sbin/mariadbd(_Z26mysql_create_table_no_lockP3THDP16st_ddl_log_stateS2_PK25st_mysql_const_lex_stringS5_P22Table_specification_stP10Alter_infoPbiP10TABLE_LIST+0x15f)[0x5625a14b2c8f]
      /usr/sbin/mariadbd(_Z18mysql_create_tableP3THDP10TABLE_LISTP22Table_specification_stP10Alter_info+0x1d6)[0x5625a14b2fa6]
      /usr/sbin/mariadbd(_ZN25Sql_cmd_create_table_like7executeEP3THD+0x7e4)[0x5625a14b48a4]
      /usr/sbin/mariadbd(_Z21mysql_execute_commandP3THDb+0x1ecc)[0x5625a140e7cc]
      /usr/sbin/mariadbd(_Z11mysql_parseP3THDPcjP12Parser_state+0x20b)[0x5625a141215b]
      /usr/sbin/mariadbd(_Z16dispatch_command19enum_server_commandP3THDPcjb+0x1217)[0x5625a1414317]
      /usr/sbin/mariadbd(_Z10do_commandP3THDb+0x123)[0x5625a14159b3]
      sql/sql_table.cc:4531(create_table_impl(THD*, st_ddl_log_state*, st_ddl_log_state*, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, DDL_options_st, HA_CREATE_INFO*, Alter_info*, int, bool*, st_key**, unsigned int*, st_mysql_const_unsigned_lex_string*))[0x5625a1519477]
      sql/sql_table.cc:4677(mysql_create_table_no_lock(THD*, st_ddl_log_state*, st_ddl_log_state*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, Alter_info*, bool*, int, TABLE_LIST*))[0x5625a1519714]
      sql/sql_table.cc:4784(mysql_create_table(THD*, TABLE_LIST*, Table_specification_st*, Alter_info*))[0x5625a18658ac]
      nptl/pthread_create.c:307(start_thread)[0x7fcb4fe77ea5]
      x86_64/clone.S:113(__clone)[0x7fcb4f392b0d]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x7fcb180106a0): CREATE OR REPLACE TABLE test.t1 ENGINE = CONNECT TABLE_TYPE = MYSQL CONNECTION= 'mysql://foo:bar@mysql8:3306/foo/bar'
      

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              Assignee:
              anel Anel Husakovic
              Reporter:
              mg MG
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                Dates

                Created:
                Updated:

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