From nobody Sat Oct 4 22:35:28 2025 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F8AB279347 for ; Tue, 12 Aug 2025 12:51:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755003089; cv=none; b=ZukaO+w4b07igsGcFKB2pmEBMPnrbZgA2pYsT0dD/fNrSirCJzNSjBa9t/7llYBUktFnw66CSjPQ2szTPB7tubauwzQj00dlKAqllxnf1VFCuoo1oDunXu351hNxGtGS9MklRKXuuISlyOp9xmQiKIb8mtc7MMv8oJzK+wZAs3E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755003089; c=relaxed/simple; bh=OUjX53EAHeKwXVNw4pKhXoSWyP1sGMgjRDiEs64lYtI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-type; b=aJC8MfndIIYk55soDFmdYgxaIBghset77qPzQwLh8A86IYRVGcpC8rUc+CJkRGuKe9SQF7JsfNkP2HjtoA2ECQk7O1WAg5t7fba0zVA7w2ChdieXCn9UyN+39FjM2E1BfpkLPgDmXFdizGGdCNidVLi44g5eRb8a88c4CNeJCe0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=ieKYKiqa; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ieKYKiqa" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1755003087; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=n2YWNQ1R3q2yuyqJw9ejU5xCE0/f1sakMXwMmNRUMe4=; b=ieKYKiqa3MUV5WjEhooXOHvL1OB7Sj7+wAm/GNsotP5/U0s0R9y3287Z/ZMh0+g/To8tSO kPNhg6Pu4y7YzB+Y8O1WNt9zgSFHd5YVfwmWXwep2KwLS9uiHLbMTghMpfqmojPiASIQrT 3EArojPLPyiorcgpAl80SKrX36WUkMg= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-665-9kKnlE7PMdGWBVGqhx90ng-1; Tue, 12 Aug 2025 08:51:24 -0400 X-MC-Unique: 9kKnlE7PMdGWBVGqhx90ng-1 X-Mimecast-MFC-AGG-ID: 9kKnlE7PMdGWBVGqhx90ng_1755003082 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3E4DF1800370; Tue, 12 Aug 2025 12:51:22 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (unknown [10.72.112.156]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id BFF7230001A1; Tue, 12 Aug 2025 12:51:15 +0000 (UTC) From: Baoquan He To: linux-mm@kvack.org Cc: ryabinin.a.a@gmail.com, glider@google.com, andreyknvl@gmail.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, sj@kernel.org, lorenzo.stoakes@oracle.com, elver@google.com, snovitoll@gmail.com, Baoquan He Subject: [PATCH v2 12/12] mm/kasan: make kasan=on|off take effect for all three modes Date: Tue, 12 Aug 2025 20:49:41 +0800 Message-ID: <20250812124941.69508-13-bhe@redhat.com> In-Reply-To: <20250812124941.69508-1-bhe@redhat.com> References: <20250812124941.69508-1-bhe@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Content-Type: text/plain; charset="utf-8" Now everything is ready, set kasan=3Doff can disable kasan for all three modes. Signed-off-by: Baoquan He --- include/linux/kasan-enabled.h | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/include/linux/kasan-enabled.h b/include/linux/kasan-enabled.h index 32f2d19f599f..21b6233f829c 100644 --- a/include/linux/kasan-enabled.h +++ b/include/linux/kasan-enabled.h @@ -4,34 +4,32 @@ =20 #include =20 +#ifdef CONFIG_KASAN extern bool kasan_arg_disabled; =20 DECLARE_STATIC_KEY_FALSE(kasan_flag_enabled); =20 -#ifdef CONFIG_KASAN_HW_TAGS - static __always_inline bool kasan_enabled(void) { return static_branch_likely(&kasan_flag_enabled); } +#else /* CONFIG_KASAN */ +static inline bool kasan_enabled(void) +{ + return false; +} +#endif =20 +#ifdef CONFIG_KASAN_HW_TAGS static inline bool kasan_hw_tags_enabled(void) { return kasan_enabled(); } - #else /* CONFIG_KASAN_HW_TAGS */ - -static inline bool kasan_enabled(void) -{ - return IS_ENABLED(CONFIG_KASAN); -} - static inline bool kasan_hw_tags_enabled(void) { return false; } - #endif /* CONFIG_KASAN_HW_TAGS */ =20 #endif /* LINUX_KASAN_ENABLED_H */ --=20 2.41.0