From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELsOY3YIU77qDKbxsIbKxycv8IIFAh9QBcYwUOMpGmeHDZ7OcAEN7McDsHUaqI//JabvYUF1 ARC-Seal: i=1; a=rsa-sha256; t=1520278929; cv=none; d=google.com; s=arc-20160816; b=tJVj1uVSmJYtfTkN53Z9m5gGYkacru0uzw+gg2NOsx8fHgAxLk4Fuf7HCgFvzB5sId NV4RNEnT0P81QAG2FGJeYwAkeFh0eT2Ip6mKBiNgwo7wv3XgBh0ZozhR0R+Scu82zJFD dPvClh29Pg9aN7ZkG4sZ1K4o08RKfyP6mfeX/2xbectyDXR8YFjl87WWEjuer1o+vA/z acrLra29w5A59RdtVrkcCEHhrfj74IrVMcUYq2s3S4OSKSA3ik7bdkAKiCqHFo/jkIsf CvswbsQDhLuC79qq4br7Xu+ok1g6YdymklIKbV66C9jASIqmZHC7ynJQcgYvqIwZBQ/H vcbA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:content-language:in-reply-to:mime-version :user-agent:date:message-id:from:cc:references:to:subject :arc-authentication-results; bh=VqU61Y6sYFV4efpoiypvipbZi4Rudm3XzbXjIV8bytw=; b=EM6mz3QNyJ+9afiZfghcmuUzbF4y5jlyy0INlG+YEE72hs9EgdlM13rUYG42H9/wL7 3KIj+wnuUQP4joqMQ+13I/EgW1bhdI9A1pQcWBylhZVBWZ5obUXgAgNMtJk7KRees59X GcSVbf8iDzg4YM2oYB+Tpr0OvnSpU5BO5GvFy4PeX2PwI+HltLyarGPI1gGd7M0f5jpF D1HlilTKDKvZq5lSt31/gAyEOA8P5Eko2RxUzpCpx4gmlA26igJ3geUjJeCAg27/1lvP zyKtxpOTgLeZyP1ISEa/pmG7R3mbzrwQFv34qSiPWvwqj2pwOdEDErDjJbB1O/z1GQjI y5yw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of dave.hansen@linux.intel.com designates 192.55.52.88 as permitted sender) smtp.mailfrom=dave.hansen@linux.intel.com Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of dave.hansen@linux.intel.com designates 192.55.52.88 as permitted sender) smtp.mailfrom=dave.hansen@linux.intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,428,1515484800"; d="scan'208";a="32583054" Subject: Re: [PATCH RFC v9 0/7] Introduce the STACKLEAK feature and a test for it To: Kees Cook , Alexander Popov , Borislav Petkov , Andy Lutomirski References: <1520107232-14111-1-git-send-email-alex.popov@linux.com> Cc: Kernel Hardening , PaX Team , Brad Spengler , Ingo Molnar , Tycho Andersen , Laura Abbott , Mark Rutland , Ard Biesheuvel , Richard Sandiford , Thomas Gleixner , "H . Peter Anvin" , Peter Zijlstra , "Dmitry V . Levin" , Emese Revfy , Jonathan Corbet , Andrey Ryabinin , "Kirill A . Shutemov" , Thomas Garnier , Andrew Morton , Alexei Starovoitov , Josef Bacik , Masami Hiramatsu , Nicholas Piggin , Al Viro , "David S . Miller" , Ding Tianhong , David Woodhouse , Josh Poimboeuf , Steven Rostedt , Dominik Brodowski , Juergen Gross , Greg Kroah-Hartman , Dan Williams , Mathias Krause , Vikas Shivappa , Kyle Huey , Dmitry Safonov , Will Deacon , Arnd Bergmann , X86 ML , LKML From: Dave Hansen Message-ID: <39c52c1d-dba5-07f6-0838-2e8b368b40ed@linux.intel.com> Date: Mon, 5 Mar 2018 11:42:07 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1593947979230091677?= X-GMAIL-MSGID: =?utf-8?q?1594127998216205808?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On 03/05/2018 11:34 AM, Kees Cook wrote: > Boris, Andy, and Dave (Hansen), you've all looked at this; would you > be willing to give an Ack on the x86 parts? (Though I do now see a new > comment from Dave was just sent.) And if not, what changes would you > like to see? I think it could definitely use another cleanup and de-#ifdef'ing pass. It seems to have inherited the style from the original code and it's a bit more than we're used to in mainline.