Re: [RFC/PATCH] RLIMIT_ARG_MAX

Peter Zijlstra
2008-02-29T17:56:27Z

On Fri, 2008-02-29 at 09:35 -0800, Linus Torvalds wrote:
>
> On Fri, 29 Feb 2008, Peter Zijlstra wrote:
> >
> > You fail to mention that <23 will still fault the first time it tries to
> > grow the stack when you set rlimit_stack to 128k and actually supply
> > 128k of env+arg.
>
> So? That's what rlimit_stack has always meant (and not just on Linux
> either, afaik). That's not a bug, it's a feature. If the system has a
> limited stack, it has a limited stack. That's what RLIMIT_STACK means.

Well, I agree with that point. It just that apparently POSIX does not.
According to Michael POSIX does not consider the arg+env array part of
the stack proper.