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OSTA UDF specification does not mention whether the CS0 charset in case of two bytes per character encoding should be treated in UTF-16 or UCS-2. The sample code in the standard does not treat UTF-16 surrogates in any special way but on systems such as Windows which work in UTF-16 internally, filenames would be treated as being in UTF-16 effectively. In Linux it is more difficult to handle characters outside of Base Multilingual plane (beyond 0xffff) as NLS framework works with 2-byte characters only. Just make sure we don't leak UTF-16 surrogates into the resulting string when loading names from the filesystem for now. CC: [email protected] # >= v4.6 Reported-by: Mingye Wang <[email protected]> Signed-off-by: Jan Kara <[email protected]>