On Fri, May 18, 2012 at 2:26 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> However, wouldn't it be better to move the check you added to the
> readdir() path, then, so that we don't do it unnecessarily for
> lookups..
>
> I'll check how that looks.
Actually, we already do that. It's the fcheck_files() check in
proc_readfd_common(), no?
So I don't think we actually call that proc_fd_instantiate() function
normally with out-of-range numbers. Afaik, only a (very rare) race, or
an insane lookup of non-existent names would do it, neither of which
looks like anything we should worry about.
Am I missing some other path?
Linus
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