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Thu, 01 Oct 2020 10:19:34 -0700 (PDT) Date: Thu, 1 Oct 2020 19:19:28 +0200 From: elver@google.com To: Andrey Konovalov Cc: Dmitry Vyukov , Vincenzo Frascino , Catalin Marinas , kasan-dev@googlegroups.com, Andrey Ryabinin , Alexander Potapenko , Evgenii Stepanov , Elena Petrova , Branislav Rankov , Kevin Brodsky , Will Deacon , Andrew Morton , linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 02/39] kasan: KASAN_VMALLOC depends on KASAN_GENERIC Message-ID: <20201001171928.GB4156371@elver.google.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.14.5 (2020-06-23) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 > Signed-off-by: Vincenzo Frascino Reviewed-by: Marco Elver > --- > 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 >