Possible Oracle corruption when using it's filesystemio_options=SETALL parameter

Issue

• Using a combination of a EXT4 filesystem, Oracle RMAN backups configured with Oracle's application parameter filesystem_io=SETALL, and compression enabled causes database backups to be corrupted during recovery.
• This behavior may have been ongoing for some time and was only noticed after validation was enabled during database restores.
• The last 512 byte block is being overwritten with zeros and this is corrupting the database.
• The corrupted 512 byte block is consistently 131072, but not always.