Re: [GIT PULL] x86/kaslr for v3.14

From: Linus Torvalds
Date: Mon Jan 20 2014 - 17:54:21 EST


So I pulled this, but one question:

On Mon, Jan 20, 2014 at 8:47 AM, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
> +config RANDOMIZE_BASE
> + bool "Randomize the address of the kernel image"
> + depends on RELOCATABLE
> + depends on !HIBERNATION

How fundamental is that "!HIBERNATION" issue? Right now that
anti-dependency on hibernation support will mean that no distro kernel
will actually use the kernel address space randomization. Which
long-term is a problem.

I'm not sure HIBERNATION is really getting all that much use, but I
suspect distros would still want to support it.

Is it just a temporary "I wasn't able to make it work, need to get
some PM people involved", or is it something really fundamental?

Linus
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