linux-kernel - [PATCH v2 14/14] kasan: don't run tests when KASAN is not enabled

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Message-Id: <654bdeedde54e9e8d5d6250469966b0bdf288010.1610554432.git.andreyknvl@google.com>
Date:   Wed, 13 Jan 2021 17:21:41 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Will Deacon <will.deacon@....com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Peter Collingbourne <pcc@...gle.com>,
        Evgenii Stepanov <eugenis@...gle.com>,
        Branislav Rankov <Branislav.Rankov@....com>,
        Kevin Brodsky <kevin.brodsky@....com>,
        kasan-dev@...glegroups.com, linux-arm-kernel@...ts.infradead.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Andrey Konovalov <andreyknvl@...gle.com>
Subject: [PATCH v2 14/14] kasan: don't run tests when KASAN is not enabled

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 <andreyknvl@...gle.com>
---
 lib/test_kasan.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index d9f9a93922d5..0c8279d9907e 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -47,6 +47,9 @@ static bool multishot;
  */
 static int kasan_test_init(struct kunit *test)
 {
+	if (!kasan_enabled())
+		return -1;
+
 	multishot = kasan_save_enable_multi_shot();
 	hw_set_tagging_report_once(false);
 	return 0;
-- 
2.30.0.284.gd98b1dd5eaa7-goog