On Wed, Jan 16, 2019 at 05:00:25PM +1200, Linus Torvalds wrote: > And if you're not the owner of the file, do you have another > suggestion for that "Yes, I have the right to see what's in-core for > this file". Because the problem is literally that if it's some random > read-only system file, the kernel shouldn't leak access patterns to > it.. This probably isn't a good heuristic, but thought I'd mention it anyway ... if the file is executable and you're not the owner, mincore always/never says its pages are resident. That'd fix all library leaks, but then there's probably a smart way of figuring out something from access patterns to a data file of some kind (/etc/passwd?)
