Error:
Below issue generally comes with database incompatibilities with the current version of MySQL. It may happen due to MySQL server upgrade or downgrade.
Solution:
This issue may resolve by repairing mysql databse using following command.
# mysqlcheck -r mysql proc -u root -p Enter password: mysql.proc OK
In case you are still getting same error while accessing proc table, You need to execute
# mysql_upgrade -u root -p