Received: by 2002:a25:31c3:0:0:0:0:0 with SMTP id x186csp1223723ybx; Tue, 5 Nov 2019 12:25:36 -0800 (PST) X-Google-Smtp-Source: APXvYqyVYgPth3cwfvHaPQch0hl5zJzAqdisraWcYpIia4fwtz5jaOjmhie7TCWbtxhOp0ayWj5s X-Received: by 2002:a05:6402:713:: with SMTP id w19mr38728029edx.239.1572985535921; Tue, 05 Nov 2019 12:25:35 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1572985535; cv=none; d=google.com; s=arc-20160816; b=P9QFI0zPrAIezpKXe979hdIXWN2n0LTNaizeFIZEhIErzun98cU9f/vDJ96jleLDUX jvSKLAAWgaT8MTpTbh3YvUkPnCFt5Bp4SYKdldKcstyy12mEBVjzMDiRE5ieJjz8WD6f wg1WBm9K/8CGLlLj0VR9kvoBZ0DHC1M0Zktbc2adLLLWAagffRW6eK7j8c7eXFtfvggg iS4qTxemiy2oCf6vbY+ORaRFx74YYE+z4+ofDy/ifsM95ovuE5RrZ+SRmaGzfDJHGkTH vQecaLExWY0INlo+MVs1Xh/Ufjz4UVCGv6nUv727ekpjDGZKiQ53pYomiBKuV50yy4RN 3Tjw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :reply-to:in-reply-to:references:mime-version:dkim-signature; bh=XKfktDI409ME+qQztoRq4fg8/cQgqVINMQeKrpPMrnc=; b=oTdWtwa0xINYIoKMcQ9NlN8w8614uTxNlwnk7PgAA+bqs/hffAzmOr4RDkutt5WdfF sYiWMYSQM962jSbKOkbh4Qc6dezVbXzw3RnOxFGH+giVYME/Jd6aB71GDkzgN8v050G3 pTJIzDladIoPK4e5oX2amx+es+XanUjBCIcC5ACbghQ9llAYjxqyNUUmXF8MfQYx190x neGfMo2Ka4Cne2kwnP9aRnAlN2cq0H7n4dq/Io/DXHonw0wZ80pkqpxAn7TjYi0olosg UOCpfflAdITeoXhmsTWfagQfCjKQHGjgVyQmG1T+HNldxmXHEVyuqlcp/izbjZufSDOy K26w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=FQKhwj3k; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id t17si14781064ejj.144.2019.11.05.12.25.11; Tue, 05 Nov 2019 12:25:35 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=FQKhwj3k; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729623AbfKEUYC (ORCPT + 99 others); Tue, 5 Nov 2019 15:24:02 -0500 Received: from mail-ed1-f65.google.com ([209.85.208.65]:35713 "EHLO mail-ed1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725806AbfKEUYC (ORCPT ); Tue, 5 Nov 2019 15:24:02 -0500 Received: by mail-ed1-f65.google.com with SMTP id r16so2619864edq.2; Tue, 05 Nov 2019 12:24:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=XKfktDI409ME+qQztoRq4fg8/cQgqVINMQeKrpPMrnc=; b=FQKhwj3k4hKbZA1mrgQOZLHnG+4W8hT3gVbMNpxkDDWnJ2olouxPxA449IeeEHRJYT P1f8iRwRwBSD+7vT7Bg+BvPYQER+y0EpSPe9hl6KCVicdzr/JLDBAjxKZjlw4fz6D5hU khrMkxo1eencvHL6sjxwhajH1Qcqnb3L/y8zVMbLptdsTexTv7hIZ3gvFLdrBryIetua Nz5GDrwNXbaN79YDs1kL7f/LmD0HZ3c2Mr/nhX3tZQekmVTDiciczeY3N2b19HgQ7YbF pQl2cVGL9JF309FEcva032/QN5KeMKyU3ejYLzjVvewaF2RAFjQHHcIp41nh5V1Zu+Qb 78yQ== 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:reply-to :from:date:message-id:subject:to:cc; bh=XKfktDI409ME+qQztoRq4fg8/cQgqVINMQeKrpPMrnc=; b=Q/lFm/094DAstkgymjnBcfOg72FygALK+H2V27Rq8wry9o5LXqjeJ+3xwmFfSzusSB jzNBIQhLBN56ZP/5lLu6aiSIjOE71CwZQrB4U/ZRlC3QljR1OAAKoVPqxDPJBuUcCnO4 ewIRl3hT8FfP5yXoP3kGg9KPfQcH5x6jcr1YoiWO9OrmcRZTN72xCFDgUrYry6fLtHJg wbSNur2ak3Yf0b4dXDHhOinZ4x9ATg0PIP6BtdD682TF/9RqS5Z9ADaPq2Abs3eCofK9 NCv6UbrjhrcTl1DZRlZchl2q7jz+rVKsBLO5/dgztJn783F264UrydIMajGRdOynKhVR xRHQ== X-Gm-Message-State: APjAAAUQaO5yYnOicosK/EggI41kQe0APrhu9JUbdAIVa6XZS0gI6dr6 TD6dR4UaPd6Gg+FhvXIg0gfno8A1SnSTXpazW6s= X-Received: by 2002:a17:906:8319:: with SMTP id j25mr10228438ejx.170.1572985440565; Tue, 05 Nov 2019 12:24:00 -0800 (PST) MIME-Version: 1.0 References: <20191031113608.20713-1-christian.brauner@ubuntu.com> In-Reply-To: Reply-To: mtk.manpages@gmail.com From: "Michael Kerrisk (man-pages)" Date: Tue, 5 Nov 2019 21:23:49 +0100 Message-ID: Subject: Re: [PATCH] clone3: validate stack arguments To: Arnd Bergmann Cc: Christian Brauner , "linux-kernel@vger.kernel.org" , Florian Weimer , GNU C Library , Kees Cook , Jann Horn , David Howells , Ingo Molnar , Oleg Nesterov , Linus Torvalds , Peter Zijlstra , Linux API , "# 3.4.x" 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 Tue, 5 Nov 2019 at 15:25, Arnd Bergmann wrote: > > On Thu, Oct 31, 2019 at 12:36 PM Christian Brauner > wrote: > > > > Validate the stack arguments and setup the stack depening on whether or not > > it is growing down or up. > > > > Signed-off-by: Christian Brauner > > Acked-by: Arnd Bergmann and Acked-by: Michael Kerrisk -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/