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  1. MariaDB Server
  2. MDEV-26950

mysqld got signal 6




      # mysql_install_db --basedir=/usr
      Installing MariaDB/MySQL system tables in '/var/lib/mysql' ...
      /usr/bin/mysql_install_db: line 525:  1690 Aborted                 "$mysqld_bootstrap" $defaults $defaults_group_suffix "$mysqld_opt" --bootstrap $silenK
      Installation of system tables failed!  Examine the logs in
      /var/log/mysqld.log or /var/lib/mysql for more information.
      The problem could be conflicting information in an external
      my.cnf files. You can ignore these by doing:
          shell> /usr/bin/mysql_install_db --defaults-file=~/.my.cnf
      You can also try to start the mysqld daemon with:
          shell> /usr/sbin/mariadbd --skip-grant-tables --general-log &
      and use the command line tool /usr/bin/mariadb
      to connect to the mysql database and look at the grant tables:
          shell> /usr/bin/mysql -u root mysql
          mysql> show tables;
      Try 'mysqld --help' if you have problems with paths.  Using
      --general-log gives you a log in /var/lib/mysql that may be helpful.
      The latest information about mysql_install_db is available at
      You can find the latest source at https://downloads.mariadb.org and
      the maria-discuss email list at https://launchpad.net/~maria-discuss
      Please check all of the above before submitting a bug report
      at https://mariadb.org/jira
      # cat /var/log/mysqld.log
      *** stack smashing detected ***: terminated
      211101  7:45:29 [ERROR] mysqld got signal 6 ;
      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: 10.6.4-MariaDB
      It is possible that mysqld could use up to 
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467956 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
      Thread pointer: 0x5604a0d51f18
      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 = 0x7ffd1180fee8 thread_stack 0x49000
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x5604a0d73210): CREATE DEFINER='mariadb.sys'@'localhost' SQL SECURITY DEFINER VIEW IF NOT EXISTS user AS SELECT
        IF(JSON_VALUE(Priv, '$.plugin') IN ('mysql_native_password', 'mysql_old_password'), IFNULL(JSON_VALUE(Priv, '$.authentication_string'), ''), '') AS Pa,
        IF(JSON_VALUE(Priv, '$.access') &         1, 'Y', 'N') AS Select_priv,
        IF(JSON_VALUE(Priv, '$.access') &         2, 'Y', 'N') AS Insert_priv,
        IF(JSON_VALUE(Priv, '$.access') &         4, 'Y', 'N') AS Update_priv,
        IF(JSON_VALUE(Priv, '$.access') &         8, 'Y', 'N') AS Delete_priv,
        IF(JSON_VALUE(Priv, '$.access') &        16, 'Y', 'N') AS Create_priv,
        IF(JSON_VALUE(Priv, '$.access') &        32, 'Y', 'N') AS Drop_priv,
        IF(JSON_VALUE(Priv, '$.access') &        64, 'Y', 'N') AS Reload_priv,
        IF(JSON_VALUE(Priv, '$.access') &       128, 'Y', 'N') AS Shutdown_priv,
        IF(JSON_VALUE(Priv, '$.access') &       256, 'Y', 'N') AS Process_priv,
        IF(JSON_VALUE(Priv, '$.access') &       512, 'Y', 'N') AS File_priv,
        IF(JSON_VALUE(Priv, '$.access') &      1024, 'Y', 'N') AS Grant_priv,
        IF(JSON_VALUE(Priv, '$.access') &      2048, 'Y', 'N') AS References_priv,
        IF(JSON_VALUE(Priv, '$.access') &      4096, 'Y', 'N') AS Index_priv,
        IF(JSON_VALUE(Priv, '$.access') &      8192, 'Y', 'N') AS Alter_priv,
        IF(JSON_VALUE(Priv, '$.access') &     16384, 'Y', 'N') AS Show_db_priv,
        IF(JSON_VALUE(Priv, '$.access') &     32768, 'Y', 'N') AS Super_priv,
        IF(JSON_VALUE(Priv, '$.access') &     65536, 'Y', 'N') AS Create_tmp_table_priv,
        IF(JSON_VALUE(Priv, '$.access') &    131072, 'Y', 'N') AS Lock_tables_priv,
        IF(JSON_VALUE(Priv, '$.access') &    262144, 'Y', 'N') AS Execute_priv,
        IF(JSON_VALUE(Priv, '$.access') &    524288, 'Y', 'N') AS Repl_slave_priv,
        IF(JSON_VALUE(Priv, '$.access') &   1048576, 'Y', 'N') AS Repl_client_priv,
        IF(JSON_VALUE(Priv, '$.access') &   2097152, 'Y', 'N') AS Create_view_priv,
        IF(JSON_VALUE(Priv, '$.access') &   4194304, 'Y', 'N') AS Show_view_priv,
        IF(JSON_VALUE(Priv, '$.access') &   8388608, 'Y', 'N') AS Create_routine_priv,
        IF(JSON_VALUE(Priv, '$.access') &  16777216, 'Y', 'N') AS Alter_routine_priv,
        IF(JSON_VALUE(Priv, '$.access') &  33554432, 'Y', 'N') AS Create_user_priv,
        IF(JSON_VALUE(Priv, '$.access') &  67108864, 'Y', 'N') AS Event_priv,
        IF(JSON_VALUE(Priv, '$.access') & 134217728, 'Y', 'N') AS Trigger_priv,
        IF(JSON_VALUE(Priv, '$.access') & 268435456, 'Y', 'N') AS Create_tablespace_priv,
        IF(JSON_VALUE(Priv, '$.access') & 536870912, 'Y', 'N') AS Delete_history_priv,
        ELT(IFNULL(JSON_VALUE(Priv, '$.ssl_type'), 0) + 1, '', 'ANY','X509', 'SPECIFIED') AS ssl_type,
        IFNULL(JSON_VALUE(Priv, '$.ssl_cipher'), '') AS ssl_cipher,
        IFNULL(JSON_VALUE(Priv, '$.x509_issuer'), '') AS x509_issuer,
        IFNULL(JSON_VALUE(Priv, '$.x509_subject'), '') AS x509_subject,
        CAST(IFNULL(JSON_VALUE(Priv, '$.max_questions'), 0) AS UNSIGNED) AS max_questions,
        CAST(IFNULL(JSON_VALUE(Priv, '$.max_updates'), 0) AS UNSIGNED) AS max_updates,
        CAST(IFNULL(JSON_VALUE(Priv, '$.max_connections'), 0) AS UNSIGNED) AS max_connections,
        CAST(IFNULL(JSON_VALUE(Priv, '$.max_user_connections'), 0) AS SIGNED) AS max_user_connections,
        IFNULL(JSON_VALUE(Priv, '$.plugin'), '') AS plugin,
        IFNULL(JSON_VALUE(Priv, '$.authentication_string'), '') AS authentication_string,
        IF(IFNULL(JSON_VALUE(Priv, '$.password_last_changed'), 1) = 0, 'Y', 'N') AS password_expired,
        ELT(IFNULL(JSON_VALUE(Priv, '$.is_role'), 0) + 1, 'N', 'Y') AS is_role,
        IFNULL(JSON_VALUE(Priv, '$.default_role'), '') AS default_role,
        CAST(IFNULL(JSON_VALUE(Priv, '$.max_statement_time'), 0.0) AS DECIMAL(12,6)) AS max_statement_time
        FROM global_priv;
      Connection ID (thread ID): 1
      Status: NOT_KILLED
      Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_conf
      The manual page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mysqld/ contains
      information that should help you find out what is causing the crash.
      Writing a core file...
      Working directory at /var/lib/mysql
      Resource Limits:
      Limit                     Soft Limit           Hard Limit           Units     
      Max cpu time              unlimited            unlimited            seconds   
      Max file size             unlimited            unlimited            bytes     
      Max data size             unlimited            unlimited            bytes     
      Max stack size            8388608              unlimited            bytes     
      Max core file size        0                    unlimited            bytes     
      Max resident set          unlimited            unlimited            bytes     
      Max processes             27786                27786                processes 
      Max open files            32183                32183                files     
      Max locked memory         65536                65536                bytes     
      Max address space         unlimited            unlimited            bytes     
      Max file locks            unlimited            unlimited            locks     
      Max pending signals       27786                27786                signals   
      Max msgqueue size         819200               819200               bytes     
      Max nice priority         0                    0                    
      Max realtime priority     0                    0                    
      Max realtime timeout      unlimited            unlimited            us        
      Core pattern: core


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              serg Sergei Golubchik
              Mingli-Yu Mingli-Yu
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