Description:
Set innodb_buffer_pool_size to the maximum value twice, the configuration value of innodb_buffer_pool_size will underflow.
While it will not happen on MariaDB.
How to repeat:
mysql> show global variables like 'innodb_buffer_pool_%size' ;
+-------------------------------+-----------+
| Variable_name | Value |
+-------------------------------+-----------+
| innodb_buffer_pool_chunk_size | 134217728 |
| innodb_buffer_pool_size | 134217728 |
+-------------------------------+-----------+
2 rows in set (0.01 sec)
mysql> SET GLOBAL innodb_buffer_pool_size = 18446744073709551615;
Query OK, 0 rows affected, 2 warnings (0.00 sec)
mysql> SET GLOBAL innodb_buffer_pool_size = 18446744073709551615;
Query OK, 0 rows affected, 2 warnings (0.00 sec)
mysql> show global variables like 'innodb_buffer_pool_%size' ;
+-------------------------------+----------------------+
| Variable_name | Value |
+-------------------------------+----------------------+
| innodb_buffer_pool_chunk_size | 134217728 |
| innodb_buffer_pool_size | -9223372036854775808 |
+-------------------------------+----------------------+
