Comment 2 for bug 709964

The output of mysql_upgraqde prior to crash was

Phase 1/3: Fixing table and database names
Phase 2/3: Checking and upgrading tables
Processing databases
information_schema
mysql
mysql.columns_priv OK
mysql.db OK
mysql.func OK
mysql.help_category Needs upgrade
mysql.help_keyword Needs upgrade
mysql.help_relation OK
mysql.help_topic Needs upgrade
mysql.host OK
mysql.proc Needs upgrade
mysql.procs_priv Needs upgrade
mysql.tables_priv OK
mysql.time_zone OK
mysql.time_zone_leap_second OK
mysql.time_zone_name Needs upgrade
mysql.time_zone_transition OK
mysql.time_zone_transition_type OK
mysql.user OK
test

Repairing tables
mysql.help_category OK
mysql.help_keyword OK
mysql.help_topic OK
mysql.proc OK
mysql.procs_priv OK
mysql.time_zone_name OK
Phase 3/3: Running 'mysql_fix_privilege_tables'...
ERROR 2013 (HY000) at line 436: Lost connection to MySQL server during query