Had a quick look at the year 2038 problem and my ext4 file system. It
appears I can use dates above 2038 and tools like "ls" and "stat"
properly report them back.
Until.
Until I re-mount the file system. Then, all of a sudden, I get false
results, like some date back in 1901 instead of something like 2500 (I
don't remember the exact numbers).
Probably bugs in ext4. btrfs works fine.
(I really do hope that I'll be using something like btrfs in 2038.)