Re: [PATCH v9 0/6] Optionally randomize kernel stack offset each syscall

[Will Deacon]

Hi Kees,

On Wed, Mar 31, 2021 at 01:54:52PM -0700, Kees Cook wrote:
> Hi Will (and Mark and Catalin),
> 
> Can you take this via the arm64 tree for v5.13 please? Thomas has added
> his Reviewed-by, so it only leaves arm64's. :)

Sorry, these got mixed up in my inbox so I just replied to v7 and v8 and
then noticed v9. Argh!

However, I think the comments still apply: namely that the dummy "=m" looks
dangerous to me and I think you're accessing pcpu variables with preemption
enabled for the arm64 part:

https://lore.kernel.org/r/20210401083034.GA8554@willie-the-truck
https://lore.kernel.org/r/20210401083430.GB8554@willie-the-truck

Will