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Fri, 15 Jan 2021 05:13:52 -0800 (PST) Date: Fri, 15 Jan 2021 14:13:47 +0100 From: Marco Elver To: Andrey Konovalov Cc: Andrew Morton , Catalin Marinas , Vincenzo Frascino , Dmitry Vyukov , Alexander Potapenko , Will Deacon , Andrey Ryabinin , Peter Collingbourne , Evgenii Stepanov , Branislav Rankov , Kevin Brodsky , kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 15/15] kasan: don't run tests when KASAN is not enabled Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/2.0.2 (2020-11-20) 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 Thu, Jan 14, 2021 at 08:36PM +0100, Andrey Konovalov wrote: > Don't run KASAN tests when it's disabled with kasan.mode=off to avoid > corrupting kernel memory. > > Link: https://linux-review.googlesource.com/id/I6447af436a69a94bfc35477f6bf4e2122948355e > Signed-off-by: Andrey Konovalov Reviewed-by: Marco Elver > --- > lib/test_kasan.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/lib/test_kasan.c b/lib/test_kasan.c > index a96376aa7293..6238b56127f8 100644 > --- a/lib/test_kasan.c > +++ b/lib/test_kasan.c > @@ -47,6 +47,11 @@ static bool multishot; > */ > static int kasan_test_init(struct kunit *test) > { > + if (!kasan_enabled()) { > + kunit_err(test, "can't run KASAN tests with KASAN disabled"); > + return -1; > + } > + > multishot = kasan_save_enable_multi_shot(); > hw_set_tagging_report_once(false); > return 0; > -- > 2.30.0.284.gd98b1dd5eaa7-goog >