From d5bd821350e69f5f464c175455135727f986f793 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 19 Dec 2017 08:11:01 +0100 Subject: udf: Sanitize nanoseconds for time stamps Reportedly some UDF filesystems are recorded with bogus subsecond values resulting in nanoseconds being over 10^9. Sanitize nanoseconds in time stamps when loading them from disk. Reported-by: Ian Turner Signed-off-by: Jan Kara --- fs/udf/udftime.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/udf') diff --git a/fs/udf/udftime.c b/fs/udf/udftime.c index 14626b34d13e..0927a4b2ecaf 100644 --- a/fs/udf/udftime.c +++ b/fs/udf/udftime.c @@ -62,6 +62,11 @@ udf_disk_stamp_to_time(struct timespec *dest, struct timestamp src) dest->tv_sec -= offset * 60; dest->tv_nsec = 1000 * (src.centiseconds * 10000 + src.hundredsOfMicroseconds * 100 + src.microseconds); + /* + * Sanitize nanosecond field since reportedly some filesystems are + * recorded with bogus sub-second values. + */ + dest->tv_nsec %= NSEC_PER_SEC; return dest; } -- cgit v1.2.3-70-g09d2