On Sat, Oct 05, 2024 at 03:43:16PM -0700, Linus Torvalds wrote: > Come on - the only possible reason for two billion files is a bad > user. Do we care what error return an attacker gets? No. We're not > talking about breaking existing programs. Umm... It can be a bad failure mode of a buggy program, really unpleasant to debug if the pile of references kept growing on stdin of that sucker, which just happens to be controlling tty of your login session; fork(2) starting to fail for everything that has it opened is not fun. That's really nit-picking though, since > So I don't think that's actually the important thing here. If we keep > it a 'long', I won't lose any sleep over it. ... exactly. > But using the rcuref code doesn't work (regardless of whether 32-bit > or 'long' ref), because of the memory ordering issues. *nod*
