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Fri, 28 Nov 2025 03:35:16 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (unknown [10.72.112.7]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 3A4DE19560B0; Fri, 28 Nov 2025 03:35:08 +0000 (UTC) From: Baoquan He To: linux-mm@kvack.org Cc: ryabinin.a.a@gmail.com, andreyknvl@gmail.com, glider@google.com, dvyukov@google.com, vincenzo.frascino@arm.com, akpm@linux-foundation.org, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, elver@google.com, sj@kernel.org, lorenzo.stoakes@oracle.com, snovitoll@gmail.com, christophe.leroy@csgroup.eu, Baoquan He Subject: [PATCH v4 12/12] mm/kasan: make kasan=on|off take effect for all three modes Date: Fri, 28 Nov 2025 11:33:20 +0800 Message-ID: <20251128033320.1349620-13-bhe@redhat.com> In-Reply-To: <20251128033320.1349620-1-bhe@redhat.com> References: <20251128033320.1349620-1-bhe@redhat.com> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Rspam-User: X-Rspamd-Queue-Id: 4B704C0005 X-Rspamd-Server: rspam11 X-Stat-Signature: 1k1aufrzcxoyts1d7qnsmimnstsku1bh X-HE-Tag: 1764300923-509608 X-HE-Meta: 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 50KvIcBF SK0rU706ZZ283rNgSdqpd9HqeUTjAkkhD0XMtJNAwmwhLdV6B6GrDFP1In2D2Be1FAM32q0MZyhh/iTGUOryteBWfhhlmOIYcpO1A1e410wp9yDYcMC7wdbsKjrAD4CfQ2DzG 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: List-Subscribe: List-Unsubscribe: Now everything is ready, set kasan=off can disable kasan for all three modes. Signed-off-by: Baoquan He --- include/linux/kasan-enabled.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/kasan-enabled.h b/include/linux/kasan-enabled.h index b05ec6329fbe..b33c92cc6bd8 100644 --- a/include/linux/kasan-enabled.h +++ b/include/linux/kasan-enabled.h @@ -4,6 +4,7 @@ #include +#ifdef CONFIG_KASAN extern bool kasan_arg_disabled; /* @@ -12,7 +13,6 @@ extern bool kasan_arg_disabled; */ DECLARE_STATIC_KEY_FALSE(kasan_flag_enabled); -#if defined(CONFIG_ARCH_DEFER_KASAN) || defined(CONFIG_KASAN_HW_TAGS) /* * Runtime control for shadow memory initialization or HW_TAGS mode. * Uses static key for architectures that need deferred KASAN or HW_TAGS. @@ -30,7 +30,7 @@ static inline void kasan_enable(void) /* For architectures that can enable KASAN early, use compile-time check. */ static __always_inline bool kasan_enabled(void) { - return IS_ENABLED(CONFIG_KASAN); + return false; } static inline void kasan_enable(void) {} -- 2.41.0