Marc Alff d47af174be Bug#58003 Segfault on CHECKSUM TABLE performance_schema.EVENTS_WAITS_HISTORY_LONG EXTENDED ...

This fix is a follow up on the fix for similar issue 56761.

When sanitizing data read from the events_waits_history_long table,
the code needs also to sanitize the schema_name / object_name / file_name pointers,
because such pointers could also hold invalid values.
Checking the string length alone was required but not sufficient.

This fix verifies that:
- the table schema and table name used in table io events
- the file name used in file io events
are valid pointers before dereferencing these pointers.

2010-11-11 12:34:46 +01:00

7.6 KiB

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