Subject: Re: copyout and address space overflows
To: Joerg Sonnenberger <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 11/16/2006 15:04:55
On Nov 16, 2006, at 1:39 PM, Joerg Sonnenberger wrote:
> Hm. We could place a reservation at the 31bit boundary and check that
> the input for copyout does not cross it or wrap around, which is a
> generalised version of what i386 implicitly does with the userspace
> limit check.
Not easily, nor would such an artificial limitation be worth it, IMO.
I for one would like to explore having separate address spaces on the
i386 port, as well.