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 AFA12CA9ECF for ; Fri, 1 Nov 2019 15:44:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8324920650 for ; Fri, 1 Nov 2019 15:44:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="g4gJ23AX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728966AbfKAPou (ORCPT ); Fri, 1 Nov 2019 11:44:50 -0400 Received: from mail-vs1-f67.google.com ([209.85.217.67]:40319 "EHLO mail-vs1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726951AbfKAPou (ORCPT ); Fri, 1 Nov 2019 11:44:50 -0400 Received: by mail-vs1-f67.google.com with SMTP id v10so6619878vsc.7 for ; Fri, 01 Nov 2019 08:44:49 -0700 (PDT) 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=sCLG7ywbulqNhkDcTlJ9BUPjtq5SrI5dcdNvfzzK2s28PApo8CCd9XI0gIfxV+Rmwg STrEqPj8U9W7lU78fSWODgs4/bsDtGbFEH5srsZ9663BPfyCWZGJJ0u24h0rUhLX5PPX t64EzdeMN3KPTmJqZCIHkLykOqEF5Uz8wKxbQdKsN66XwZAkc9TvHLFuL+W96lv4dloM Y3cd2aeKVUdWj8UE9wN0gAHn2zYNGfrni53uMGjc9UdcCMb9vVds4ig3W4uMOyKvfMVn 0oz9inHeF7pj0Rlred7x5D6SncW0jWaUe53KAKlBcCJrGFkq0R6AHLfFu5qu2948oeTc z7mQ== X-Gm-Message-State: APjAAAVDM/OX0m7a69CIyS9taOzSHZXrK5atx8Tdqi1g4G3tz7DWpR73 SLB44Xk+fxJvd/Oalq5Elg83FpPWG1DWIbudtZe05Q== 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" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_ADSP_CUSTOM_MED,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 95667CA9ECF for ; Fri, 1 Nov 2019 15:44:54 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 6DC7520650 for ; Fri, 1 Nov 2019 15:44:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="VowZEVvL"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="g4gJ23AX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6DC7520650 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:To:Subject:Message-ID:Date:From: In-Reply-To:References:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=aA4zrM0fbftSgBniQMvGiIKOsr5iTnUIqVhrhqeYmmQ=; b=VowZEVvLAGrtZT PAQK7cIv0i4C0MiICLDvrk5n+SrkXZLHPx9mAAJnwuZQjfqF7R3+FR9qe4XkI2ZWxKTG/Ahm50QUX GRukyp7SLUaouflfA+g0EcUIrZcsUqJNZ+tNXu2l7fQ7jhwx+7XeZGxfq9pIwsyW5X/R5n3la/E2d IfbUu+lmQBm0coF8B9cmB9eyXQDJV/8L4lGoH4QVZhQ/PKLjKO9V/inlq2Bg0AshrJ1wvees4h8nE IvMoDycs0j7m6Szve43YvsKxUC+An/DmmntcIk2DNVjzFIDkhd7awn5PBx3iVrn/9JOazWWKvPSsW 8TKr/inlz1ARIFWG/7kg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iQZ6b-0000rM-UI; Fri, 01 Nov 2019 15:44:53 +0000 Received: from mail-vs1-xe43.google.com ([2607:f8b0:4864:20::e43]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iQZ6Y-0000qW-CA for linux-arm-kernel@lists.infradead.org; Fri, 01 Nov 2019 15:44:51 +0000 Received: by mail-vs1-xe43.google.com with SMTP id l5so6603186vsh.12 for ; Fri, 01 Nov 2019 08:44:50 -0700 (PDT) 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=Z+w9nhJJ8/2O28BJ75lhw7sgzhMpL73AbLavFEyDxNqGdxXtli2aJCxJMoAwnegmHg Mrudv5GzvgxPloGRTzOfYamwg25ua58rgASrGdpLsTj3+V1u4kdL5BEE5IMiJ196s8ah ktxPHqb7TLf3nBTjNnuBG/SQ2Ctu7hho3Dd7vn0lj3KHzLKFSdjdnzCv/meRs3KzAH4e UqvHBw8QesTpuCYmYX2BXMd5pTXmHSSmW43UXW7Kq3T9JL6oc/rwWrSNgU/trngSPhVZ 8uBSRp3CwW7/++TG6l7cnUXA52ocdMMW9XXrBG4JvEqNA6rlC8+Vdxo9TpmUq2WFHcpZ f0dA== X-Gm-Message-State: APjAAAXI6AidjpyuniXmyKNC+HS/ouPfZpz3gc/VrApE3Kaf59RqbQ4w 7VWWcQPoZnT05+m4qFRRXm+rjVT0WC+k3hGsHgb77A== 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191101_084450_439678_00E91751 X-CRM114-Status: UNSURE ( 8.32 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , clang-built-linux , Ard Biesheuvel , Masahiro Yamada , Catalin Marinas , Jann Horn , Nick Desaulniers , LKML , Steven Rostedt , Miguel Ojeda , Masami Hiramatsu , Kernel Hardening , Laura Abbott , Will Deacon , Dave Martin , linux-arm-kernel Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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