Re: [PATCH v3 02/39] kasan: KASAN_VMALLOC depends on KASAN_GENERIC

elver
2020-10-01T17:19:39Z

On Fri, Sep 25, 2020 at 12:50AM +0200, Andrey Konovalov wrote:
> Currently only generic KASAN mode supports vmalloc, reflect that
> in the config.
>
> Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>

Reviewed-by: Marco Elver <elver@google.com>

> ---
> Change-Id: I1889e5b3bed28cc5d607802fb6ae43ba461c0dc1
> ---
> lib/Kconfig.kasan | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan
> index 047b53dbfd58..e1d55331b618 100644
> --- a/lib/Kconfig.kasan
> +++ b/lib/Kconfig.kasan
> @@ -156,7 +156,7 @@ config KASAN_SW_TAGS_IDENTIFY
>
> config KASAN_VMALLOC
> bool "Back mappings in vmalloc space with real shadow memory"
> - depends on HAVE_ARCH_KASAN_VMALLOC
> + depends on KASAN_GENERIC && HAVE_ARCH_KASAN_VMALLOC
> help
> By default, the shadow region for vmalloc space is the read-only
> zero page. This means that KASAN cannot detect errors involving
> --
> 2.28.0.681.g6f77f65b4e-goog
>