linux-kernel - Re: [PATCH v3 02/39] kasan: KASAN_VMALLOC depends on KASAN

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Date:   Thu, 1 Oct 2020 19:19:28 +0200
From:   elver@...gle.com
To:     Andrey Konovalov <andreyknvl@...gle.com>
Cc:     Dmitry Vyukov <dvyukov@...gle.com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        kasan-dev@...glegroups.com,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Evgenii Stepanov <eugenis@...gle.com>,
        Elena Petrova <lenaptr@...gle.com>,
        Branislav Rankov <Branislav.Rankov@....com>,
        Kevin Brodsky <kevin.brodsky@....com>,
        Will Deacon <will.deacon@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-arm-kernel@...ts.infradead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 02/39] kasan: KASAN_VMALLOC depends on KASAN_GENERIC

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@...gle.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com>

Reviewed-by: Marco Elver <elver@...gle.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
>