From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3F775CFD376 for ; Fri, 28 Nov 2025 03:34:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=6bb3Fj+IEu5TgR6FamitgP4LC7HB+ODz43uA7YZcX7g=; b=vLKd87rXpkdql+vixIfM6CyTe9 JC722dBLlbbPa4hdQfTgMSY5S1S1mg2a1dhW/AdR2ZbzOFqxs/Ao0X2MUK6r79WxhVJhlD5C2hmoM O93l3lt2+4OdKxDO2h39f/UcyWMMPZo0f9m8Q05JWmrznbLBjUxxy2VGOKWSd8AsLDzV9Doe+2LHl mLTsMkep4fYVJi49wc9n/r8+87Rdje1f4Y2uk8zVZtmBfRRZBjiovPnzTmOGWCNplRuDRUgctjH49 T/oxgot2c1r4Shz4bAuy7wm7B2xulmSdLVKz4YCy7IQgD8A6Tg97B4H9iKFgo08YSmnc+F5ZZV/Oo VKYwMqfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vOpFf-0000000HWhz-2YxQ; Fri, 28 Nov 2025 03:34:31 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vOpFa-0000000HWgU-3P6A for kexec@lists.infradead.org; Fri, 28 Nov 2025 03:34:27 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1764300866; 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=6bb3Fj+IEu5TgR6FamitgP4LC7HB+ODz43uA7YZcX7g=; b=KHDnTcCdYiGKfKtU2jggwOuIEf8lZwzXLv55+WpfP4/2rZTa1RWx9JWcpVd76OK62Y6xIv Nad0voZumV4kVxAOOAisY79Zr4njutB3f/A1l1bG5YP96NX+nQXYmwC2+lOqR7tHf8QwB+ gjfYgEtxlakNgxOc9sqP+EgwWYtaiMI= Received: from mx-prod-mc-06.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-639-sr4zb15qN6-IOLblGY_jsQ-1; Thu, 27 Nov 2025 22:34:20 -0500 X-MC-Unique: sr4zb15qN6-IOLblGY_jsQ-1 X-Mimecast-MFC-AGG-ID: sr4zb15qN6-IOLblGY_jsQ_1764300858 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (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-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id E2EA5180057A; Fri, 28 Nov 2025 03:34:17 +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 8142319560B0; Fri, 28 Nov 2025 03:34:10 +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 , linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 05/12] arch/arm64: don't initialize kasan if it's disabled Date: Fri, 28 Nov 2025 11:33:13 +0800 Message-ID: <20251128033320.1349620-6-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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251127_193426_915274_BC570955 X-CRM114-Status: UNSURE ( 6.99 ) X-CRM114-Notice: Please train this message. X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org And also need skip kasan_populate_early_vm_area_shadow() if kasan is disabled. Signed-off-by: Baoquan He Cc: linux-arm-kernel@lists.infradead.org --- arch/arm64/mm/kasan_init.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c index abeb81bf6ebd..eb49fdad4ef1 100644 --- a/arch/arm64/mm/kasan_init.c +++ b/arch/arm64/mm/kasan_init.c @@ -384,6 +384,9 @@ void __init kasan_populate_early_vm_area_shadow(void *start, unsigned long size) { unsigned long shadow_start, shadow_end; + if (!kasan_enabled()) + return; + if (!is_vmalloc_or_module_addr(start)) return; @@ -397,6 +400,9 @@ void __init kasan_populate_early_vm_area_shadow(void *start, unsigned long size) void __init kasan_init(void) { + if (kasan_arg_disabled) + return; + kasan_init_shadow(); kasan_init_depth(); kasan_init_generic(); -- 2.41.0