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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3684AC433B4 for ; Thu, 1 Apr 2021 21:49:39 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 69A18610E8 for ; Thu, 1 Apr 2021 21:49:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 69A18610E8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; 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=HhpESeAoXNHkfkSbeM2C+G+9mXwvCZanK72Q2kFd5fk=; b=f+KqvJRu3qR7pONL4QBwHrz+8 etWKNVxi4SWt1Tr9sUUBba+R2MMYJ52hgw4TA8Dd/BAJBe5MeC5H+/XwVks5xIigTEU5aw/vdD9zS gYhVm4Lh9Pn2osxm4musfdZ/ZyvmGf2HIX2G2ZC7Joki1V68AEzrNzBq/YG7RtgvE9f+RFuqM2JQx bmVJcPEVYjrzDV9ilAvAD0FSieE46Fkj0f5NUrMCH/a0m8Wfo84pQ4UzjeBYGuMWw1vrEIy62fkgP 1Hw/Pg1SVAIdT/ocx3J3BmFyN9awz9KaLwMYaO9oPbbdJg6QgzCBH/StAJ2pSXOI6EFJadrG7KXhP 3HXvwRCkQ==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lS59R-00B7gk-G8; Thu, 01 Apr 2021 21:46:53 +0000 Received: from mail-pf1-x433.google.com ([2607:f8b0:4864:20::433]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lS590-00B7cp-Kx for linux-arm-kernel@lists.infradead.org; Thu, 01 Apr 2021 21:46:28 +0000 Received: by mail-pf1-x433.google.com with SMTP id q5so2364161pfh.10 for ; Thu, 01 Apr 2021 14:46:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=usJD8QXCUUQ3yDD19nRhcfJUMWYiKf+EiZNOMzSngU8=; b=G4ChGKwb73jivZgOdREGW7Jl/xK+07gkogP9+1kyu2QispNTwwRqLKZMdl/YtU/+Lt /6pS84xtYTduYfABsJSoN4e+N+/d5AQAGm1DhERFMawsMiwP/sKWF3z+8kShjCvWc2Xx J1qo99Tg1cz6t80SOTCoCClKVew6dbnE2D8Wo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=usJD8QXCUUQ3yDD19nRhcfJUMWYiKf+EiZNOMzSngU8=; b=EjtTu8MNaKWNML2WK9G/7y+hzbyAljUEtAhxe/4XXeM55fVKsIDF/hbfkzK9my48gl yP5py6Ps553ViLM02UcT9Ub8zrjRyCdkqKDycO3HldodoP23gpBlfNN8p0DkSHa+fEz6 1GfQu8ii89jvqGpfJBH/guQcd7LOsp1C7j6pC7aXlWknlmVP5paOi4NoINbUkQJ0omL5 C/zVw8AS8tLKXfLI/rj9FFW7fCNj3Cro4PDsXVSgGuyvzXp3VOxyGWXAdnhGJZ/gfxaN fzsqxG57PmP+kW2js6AsFbg07D0hESm/oHr1Q5wXxDJq7As1H2hd6X7ECHKfyONlYKfS 110w== X-Gm-Message-State: AOAM530EoZxj3nq49bNVPvFzVC2u/s4wwWLzN4PAnuP4P37nFHUpW2i1 xbgAcWe/FnMbJQrHVgPOq7E9lA== X-Google-Smtp-Source: ABdhPJw2Igjg2dUPUc361qNdAsnz5koMvMjgAifwUOU3txfIVOmKgYERtvxS6R3TbAJ8ajqzLbNIRQ== X-Received: by 2002:a63:2f03:: with SMTP id v3mr9286709pgv.408.1617313584551; Thu, 01 Apr 2021 14:46:24 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id x186sm6325466pfc.65.2021.04.01.14.46.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Apr 2021 14:46:23 -0700 (PDT) Date: Thu, 1 Apr 2021 14:46:23 -0700 From: Kees Cook To: Roy Yang Cc: akpm@linux-foundation.org, alex.popov@linux.com, ard.biesheuvel@linaro.org, catalin.marinas@arm.com, corbet@lwn.net, david@redhat.com, elena.reshetova@intel.com, glider@google.com, jannh@google.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, luto@kernel.org, mark.rutland@arm.com, peterz@infradead.org, rdunlap@infradead.org, rppt@linux.ibm.com, tglx@linutronix.de, vbabka@suse.cz, will@kernel.org, x86@kernel.org Subject: Re: [PATCH v8 0/6] Optionally randomize kernel stack offset each syscall Message-ID: <202104011442.B20F2BAFC@keescook> References: <20210330205750.428816-1-keescook@chromium.org> <20210401191744.1685896-1-royyang@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210401191744.1685896-1-royyang@google.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210401_224626_892889_6556D714 X-CRM114-Status: GOOD ( 12.82 ) 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 Thu, Apr 01, 2021 at 12:17:44PM -0700, Roy Yang wrote: > Both Android and Chrome OS really want this feature; For Container-Optimized OS, we have customers > interested in the defense too. It's pretty close! There are a couple recent comments that need to be addressed, but hopefully it can land if x86 and arm64 maintainers are happy v10. > Change-Id: I1eb1b726007aa8f9c374b934cc1c690fb4924aa3 > -- > 2.31.0.208.g409f899ff0-goog And to let other folks know, I'm guessing this email got sent with git send-email to try to get a valid In-Reply-To header, but I guess git trashed the Subject and ran hooks to generate a Change-Id UUID. I assume it's from following the "Reply instructions" at the bottom of: https://lore.kernel.org/lkml/20210330205750.428816-1-keescook@chromium.org/ (It seems those need clarification about Subject handling.) -- Kees Cook _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel