On 8/19/19 7:14 PM, Mark Rutland wrote:
> In several places we need to be able to operate on pointers which have
> gone via a roundtrip:
>
> virt -> {phys,page} -> virt
>
> With KASAN_SW_TAGS, we can't preserve the tag for SLUB objects, and the
> {phys,page} -> virt conversion will use KASAN_TAG_KERNEL.
>
> This patch adds tests to ensure that this works as expected, without
> false positives which have recently been spotted [1,2] in testing.
>
> [1]
> https://lore.kernel.org/linux-arm-kernel/[email protected]/
> [2]
> https://lore.kernel.org/linux-arm-kernel/[email protected]/
>
> Signed-off-by: Mark Rutland <[email protected]>
> Reviewed-by: Andrey Konovalov <[email protected]>
> Tested-by: Andrey Konovalov <[email protected]>
> Cc: Alexander Potapenko <[email protected]>
> Cc: Andrew Morton <[email protected]>
> Cc: Andrey Ryabinin <[email protected]>
> Cc: Dmitry Vyukov <[email protected]>
> Cc: Will Deacon <[email protected]>
> ---
Acked-by: Andrey Ryabinin <[email protected]>
