[GIT PULL] hardening fixes for v5.18-rc1

[Kees Cook]

On Thu, Mar 31, 2022 at 11:49:42AM -0700, Linus Torvalds wrote:
> On Thu, Mar 31, 2022 at 11:35 AM Kees Cook <keescook at chromium.org> wrote:
> >
> > Please pull these hardening fixes for v5.18-rc1. This addresses an
> > -Warray-bounds warning found under a few ARM defconfigs, and disables
> > long-broken CONFIG_HARDENED_USERCOPY_PAGESPAN.
> 
> Can't we just remove that HARDENED_USERCOPY_PAGESPAN thing entirely?
> 
> Yes, yes, I know Matthew did that as part of other patches that is too
> late to go in any more in this merge window, but just the removal
> patch is a no-brainer.

I can do that, but it seemed like more work for folks: a larger diff to
look at, and a rebase for Matthew or me. It's not MUCH more work, but
given the timing of the merge window, I wanted to have a minimal diff.

> IOW, why not just do the attached?

But I can certainly respin it, if you'd prefer?

-- 
Kees Cook