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=-8.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 7B193CA9ECF for ; Fri, 1 Nov 2019 15:45:09 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id C160A20650 for ; Fri, 1 Nov 2019 15:45:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="g4gJ23AX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C160A20650 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-17226-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 29765 invoked by uid 550); 1 Nov 2019 15:45:01 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 29745 invoked from network); 1 Nov 2019 15:45:01 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=EryZRTfyuksqxAOsiXgBnBsO6Q4g8OGONpcbT/2UUtU=; b=g4gJ23AXi6bRyNKKbF6kjh2Pk/SIgEmk0fMp7yU2OpLF1/ZSxEbdKQ2jcL1t/s7J/0 r0bV9COqOeg4Cq5X18jTt+9/QOwnZtzmoXU43GWevEdIG1WGMtRc2pCbbksNon998ATC RYHfnk/oc6w0lpn4KlG1RD+XtSSxaBWmYd1V9RlWndHbQ5tvHLVM2OtZ6ek4cI2xWRNt R3iakDWD0UnL0SsREP4Ka3pRfim+0rka4bOI/E6Y1rBKqdoZulqYrnLmldF6BQw22qOB hqW6VUonfcohOf+Nawcc27KX/td24YYGGrBLxrNdceLzOMTOw2m0wiX1Fd48dG5wZunR 2c0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=EryZRTfyuksqxAOsiXgBnBsO6Q4g8OGONpcbT/2UUtU=; b=r8tXIRrhe6NL9XsyTrrfAFnBwuJh4gTRAkYerk8Za7viBb6sH5HpeAn8IY7JescOkw 842qJRDE8zIbhb7DmuZZ1l8LOkaVoCNDcfV6MxKvgeVwTEEheNQhJUdad7YjL/fi8QW1 teJDxoLHhuj5SizI/0Ne2iQlImNKMfAGhi9nyECgQsPbTPpk2zQVVCpxBeTbpSM0dpjA sdqVmyFSBfs95PuYeuxuZMuoZDindVVAwfrrno6IwLf0GZvvrzTjBzmwxr98rcmuVlTu XgQnhxCsSxUwUWEcGuhreWD6mLyYSlMw8nBQbntwkM1z9CLdkyk+61e6DzC2D9cu/bQz cRcA== X-Gm-Message-State: APjAAAV+GH5S5qet8YnM3VeMjryUOABOfidC4uHYpEIU+bKTbT8JkLx2 +VexJjzomaLyLTOerXT69/Tn6Q11s6njapG459vSwQ== X-Google-Smtp-Source: APXvYqyH1Rx5ASstI+WbI3lXJTQCoOfcyvqAY38q2Tn/ntuwQF2PZaPqzpHPsoiSZYGDDuhXsCRPVJfLzeJkdoFRyBg= X-Received: by 2002:a67:e951:: with SMTP id p17mr3253133vso.112.1572623088869; Fri, 01 Nov 2019 08:44:48 -0700 (PDT) MIME-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20191031164637.48901-1-samitolvanen@google.com> <20191031164637.48901-18-samitolvanen@google.com> <201910312042.5AF689AAC@keescook> In-Reply-To: <201910312042.5AF689AAC@keescook> From: Sami Tolvanen Date: Fri, 1 Nov 2019 08:44:37 -0700 Message-ID: Subject: Re: [PATCH v3 17/17] arm64: implement Shadow Call Stack To: Kees Cook Cc: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Dave Martin , Laura Abbott , Mark Rutland , Nick Desaulniers , Jann Horn , Miguel Ojeda , Masahiro Yamada , clang-built-linux , Kernel Hardening , linux-arm-kernel , LKML Content-Type: text/plain; charset="UTF-8" On Thu, Oct 31, 2019 at 8:45 PM Kees Cook wrote: > The only suggestion would be calling attention the clearing step (both in > comments below and in the commit log), just to record the earlier > discussion about it. Sure, makes sense. I'll add comments about this in v4. Sami