Re: KASLR vs. KASAN on x86

[Michal Koutný]

On Wed, Mar 08, 2023 at 06:24:05PM +0100, Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx> wrote:
> So the vmemmap_base and probably some part of vmalloc could easily end
> up in KASAN shadow.

Would it help to (conditionally) reduce vaddr_end to the beginning of
KASAN shadow memory?
(I'm not that familiar with KASAN, so IOW, would KASAN handle
randomized: linear mapping (__PAGE_OFFSET), vmalloc (VMALLOC_START) and
vmemmap (VMEMMAP_START) in that smaller range.)

Thanks,
Michal

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