[PATCH hotfix 6.12 v2 4/8] mm: resolve faulty mmap_region() error path behaviour

[Lorenzo Stoakes]

On Tue, Oct 29, 2024 at 12:33:13PM +0000, Mark Brown wrote:
> On Mon, Oct 28, 2024 at 10:14:50PM +0000, Lorenzo Stoakes wrote:
>
> > It doesn't make sense to have shmem explicitly check this one arch-specific
> > case, it is arch-specific, so the arch should handle it. We know shmem is a
> > case in which we want to permit MTE, so simply check for this directly.
> >
> > This also fixes the issue with checking arch_validate_flags() early, which
> > would otherwise break mmap_region().
>
> The relevant tests all pass with this on today's pending-fixes.

Thanks, am respinning series now, will add your tag!

>
> Tested-by: Mark Brown <broonie at kernel.org>