[PATCH 1/9] mm: Hardened usercopy

On Thu, 7 Jul 2016, Kees Cook wrote:

On Thu, Jul 7, 2016 at 3:42 AM, Thomas Gleixner [off-list ref] wrote:

quoted

I'd rather make that a weak function returning 1 which can be replaced by
x86 for CONFIG_FRAME_POINTER=y. That also allows other architectures to
implement their specific frame checks.

Yeah, though I prefer CONFIG-controlled stuff over weak functions, but
I agree, something like arch_check_stack_frame(...) or similar. I'll
build something for this on the next revision.

I'm fine with CONFIG_CONTROLLED as long as the ifdeffery is limited to header
files.

Thanks,

	tglx