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

https://mariadb.com/kb/en/installing-system-tables-mysql_install_db

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

key_buffer_size=134217728

read_buffer_size=131072

max_used_connections=0

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 = 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

/usr/sbin/mariadbd(my_print_stacktrace+0x2e)[0x56049fb1233e]

/usr/sbin/mariadbd(handle_fatal_signal+0x478)[0x56049f66bac8]

/lib64/libc.so.6(+0x418f0)[0x7f4b0cec68f0]

/lib64/libc.so.6(pthread_kill+0x43)[0x7f4b0cf11693]

/lib64/libc.so.6(raise+0x16)[0x7f4b0cec6846]

/lib64/libc.so.6(abort+0xc5)[0x7f4b0ceb17a3]

/lib64/libc.so.6(__libc_fatal+0x0)[0x7f4b0cf05e50]

/lib64/libc.so.6(__fortify_fail+0x2a)[0x7f4b0cf9ec4a]

/lib64/libc.so.6(+0x119c14)[0x7f4b0cf9ec14]

/usr/sbin/mariadbd(+0xacc8b5)[0x56049f86c8b5]

/usr/sbin/mariadbd(_ZN10TABLE_LIST8calc_md5EPKc+0x33)[0x56049f530533]

/usr/sbin/mariadbd(_Z17mysql_create_viewP3THDP10TABLE_LIST21enum_view_create_mode+0x9e1)[0x56049f5214b1]

/usr/sbin/mariadbd(_Z21mysql_execute_commandP3THDb+0x2249)[0x56049f45ef79]

/usr/sbin/mariadbd(_Z11mysql_parseP3THDPcjP12Parser_state+0x1d8)[0x56049f462098]

/usr/sbin/mariadbd(_Z9bootstrapP13st_mysql_file+0x23e)[0x56049f46246e]

/usr/sbin/mariadbd(_Z11mysqld_mainiPPc+0x11ae)[0x56049f3a0dee]

/lib64/libc.so.6(+0x2d51b)[0x7f4b0ceb251b]

/lib64/libc.so.6(__libc_start_main+0x7c)[0x7f4b0ceb25cc]

/usr/sbin/mariadbd(_start+0x25)[0x56049f3956b5]

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

  Host,

  User,

  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