Re: mmap() returns ENOMEM if addr is >= VM_MAXUSER_ADDRESS despite no MAP_FIXED

[Theo de Raadt]

> Why are you trying to map memory outside the viable memory address space?

And how do you know this value 'VM_MAXUSER_ADDRESS'?

Or are you randomly choosing some other high address space value, and
only comparing it vaguely to VM_MAXUSER_ADDRESS?  This varies greatly
architectures, and not just in number.