Re: [PATCH v3 21/39] kasan: don't allow SW_TAGS with ARM64_MTE

elver
2020-10-01T17:55:49Z

Does that patch title need an ", arm64" in it, like the others?

On Fri, Sep 25, 2020 at 12:50AM +0200, Andrey Konovalov wrote:
> Software tag-based KASAN provides its own tag checking machinery that
> can conflict with MTE. Don't allow enabling software tag-based KASAN
> when MTE is enabled.
>
> Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
> ---
> Change-Id: Icd29bd0c6b1d3d7a0ee3d50c20490f404d34fc97
> ---
> arch/arm64/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index e7450fbd0aa7..e875db8e1c86 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -131,7 +131,7 @@ config ARM64
> select HAVE_ARCH_JUMP_LABEL
> select HAVE_ARCH_JUMP_LABEL_RELATIVE
> select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
> - select HAVE_ARCH_KASAN_SW_TAGS if HAVE_ARCH_KASAN
> + select HAVE_ARCH_KASAN_SW_TAGS if (HAVE_ARCH_KASAN && !ARM64_MTE)
> select HAVE_ARCH_KGDB
> select HAVE_ARCH_MMAP_RND_BITS
> select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
> --
> 2.28.0.681.g6f77f65b4e-goog
>