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 2D018C4345F for ; Tue, 30 Apr 2024 05:35:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2keZFoalF/WP6YfWOXeAx/1GBLaijWlm26bgxyNdiYM=; b=tgD5+6nfuiCYWP 9gCWU6SO9QRk2dwDDr9TwXfO6PebKgp69NxyfSD0RAUKtNBYnHekYtKEZGL1H94YSX2mLtMbcjm4z sB9wqAQB2Tl1iJ+OPJBme2S9Xm+6mcaQKFF4dkXFCSjX6ZAH7f2tinr4FA14tgnLJP/9CHD8ILttc 2rTm7vj8EnKZGCslgRcOcLINsFbrIh+wlfKnW5nJ7Ay/9a1qf2gLwsMl4NYFyGrHCfoZZVFGDP2HN n6DJnvFDG2v+RsDHelihc3Z3U02ibrA0PABg3sPd/DdWz4ov9QLQK6i4ZuaO7+vnOeHFcbsHjjxBb X/z1X3hy1M4Nj6TVkRyQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1g8z-00000005AAw-3Z51; Tue, 30 Apr 2024 05:35:09 +0000 Received: from mail-pl1-x629.google.com ([2607:f8b0:4864:20::629]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1g8w-00000005AAI-3mAQ for linux-arm-kernel@lists.infradead.org; Tue, 30 Apr 2024 05:35:08 +0000 Received: by mail-pl1-x629.google.com with SMTP id d9443c01a7336-1e51398cc4eso47424295ad.2 for ; Mon, 29 Apr 2024 22:35:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1714455305; x=1715060105; darn=lists.infradead.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=C86TkJMefuwLFYqPDfjsQaXZDgvqLvjIZeQbeqShpoI=; b=Wdu1JthNojBAUt0mrNTEkPXskgUqkZbJ+o0RiZeOh2tATcB+XeEbJXxPiWDto64/92 /ovYpTY9hfva0ArcgGG9PhbCTxVZdrH/y8FzcxKSOx4P3cljv0kGrOgK9rEBx9Xslk4W UTlB1Ow8vIicL6G/xLBFJs2SCzYn7YJgYT2GE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714455305; x=1715060105; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=C86TkJMefuwLFYqPDfjsQaXZDgvqLvjIZeQbeqShpoI=; b=vBPk7HMGecAn0cT78vQ/R5zR9q98JGU8QUF4lELm3/ZwEX8bKbaoB/W3l/UQsrh9rH HBfIU9yVIOUCQGL266sv3H0DBPFWWEw8KX0ilN5nKlaXrmIANK91VPkBfUNcqY6e7j4w 8LoVJQvfIyEPTu9gThScMBVBArjL414o+6H3jQ8qEbqor1zvK9UsWcUrXhIwHIX8iS3A 3ZEfTto7Thgkh3x8PKZTVp9L4otxVHAYL9BOSGtnDxaeNRj77UCJr3wClVJTOjbhz6iJ vy/OZ4CaN7tbTOVHwnv3GF5HUfJuTj4JRBqJAlgbkVOFsHI04Z/1KdcAmzC5FqW8pgLQ 4e8w== X-Forwarded-Encrypted: i=1; AJvYcCWZniOH/nAsIwPCJM+Fk6YWGtHWnwBsG5UDhF6hfUo/LEMqW+RQQDWC7M9xAbGUN9HD+2RP1THzRBsattrJegVu5H9fXw3nsBpPa0HTqk8GqY+5msE= X-Gm-Message-State: AOJu0YwhZUQ67ya/3RnWZuB/o4D+wqw07576S/M5zU+vCvjVMgMWkhKp /Pm+DhVrtXFsZ36bhF/OdfZ1wRXSYStpKXXidWuAP5WleWqRxgMw69sXF9hpkg== X-Google-Smtp-Source: AGHT+IExYVGtME+b7bsTki80m/529C/WFpqN5LWnzvSEWxibnamEqrs4aXGKwGyaazB7ViSXdQpIYA== X-Received: by 2002:a17:903:41ca:b0:1eb:1240:1aea with SMTP id u10-20020a17090341ca00b001eb12401aeamr16493520ple.20.1714455305039; Mon, 29 Apr 2024 22:35:05 -0700 (PDT) Received: from www.outflux.net ([198.0.35.241]) by smtp.gmail.com with ESMTPSA id q4-20020a170902edc400b001e29c4b7bd2sm21410591plk.240.2024.04.29.22.35.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Apr 2024 22:35:04 -0700 (PDT) Date: Mon, 29 Apr 2024 22:35:03 -0700 From: Kees Cook To: Nathan Chancellor Cc: "Gustavo A. R. Silva" , Catalin Marinas , Will Deacon , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Nick Desaulniers , Bill Wendling , Justin Stitt , linux-hardening@vger.kernel.org, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] hardening: Refresh KCFI options, add some more Message-ID: <202404292233.9A98A7C@keescook> References: <20240426222940.work.884-kees@kernel.org> <20240429221650.GA3666021@dev-arch.thelio-3990X> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240429221650.GA3666021@dev-arch.thelio-3990X> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240429_223506_983426_0A2C0AFC X-CRM114-Status: GOOD ( 12.55 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Apr 29, 2024 at 03:16:50PM -0700, Nathan Chancellor wrote: > On Fri, Apr 26, 2024 at 03:29:44PM -0700, Kees Cook wrote: > [...] > > +# Enable Kernel Control Flow Integrity (currently Clang only). > > +CONFIG_CFI_CLANG=y > > +# CONFIG_CFI_PERMISSIVE is not set > > Should this be a part of kernel/configs/hardening.config because RISC-V > supports it (and 32-bit ARM will soon too)? Probably yes. I was worried it might be "noisy" for archs that don't support it, but frankly if someone is using "make hardening.config" they probably want to know about unsupported options. :) -- Kees Cook _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel