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[198.145.29.99]) by mx.google.com with ESMTPS id m12si9463004plt.413.2019.06.17.22.19.34 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 17 Jun 2019 22:19:34 -0700 (PDT) Received-SPF: pass (google.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) client-ip=198.145.29.99; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=zpPILBBC; spf=pass (google.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org Received: from localhost.localdomain (c-73-223-200-170.hsd1.ca.comcast.net [73.223.200.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 097272084D; Tue, 18 Jun 2019 05:19:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560835173; bh=D6idtN2vuJNZSoRrBJEbsCDVqnmpSZdTylzmezC3ViA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=zpPILBBCAqMR9mMbYvimRhFwP9kZjL2AU5MfjZJzY+WvSEkteYVoW+sbq7pdcFPzw 7gcuAso+EV/aRtthzZDjhBmjrmxqfdLWq9frm+edibB8kMEZifuHcKNvThHI+539eX cWp7GyxgMkZgpW/SDbOJ6lRDGCDBgF5xmFGDc2Io= Date: Mon, 17 Jun 2019 22:19:32 -0700 From: Andrew Morton To: Kees Cook Cc: Alexander Potapenko , Christoph Lameter , Masahiro Yamada , Michal Hocko , James Morris , "Serge E. Hallyn" , Nick Desaulniers , Kostya Serebryany , Dmitry Vyukov , Sandeep Patil , Laura Abbott , Randy Dunlap , Jann Horn , Mark Rutland , Marco Elver , linux-mm@kvack.org, linux-security-module@vger.kernel.org, kernel-hardening@lists.openwall.com Subject: Re: [PATCH v7 1/2] mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options Message-Id: <20190617221932.7406c74b6a8114a406984b70@linux-foundation.org> In-Reply-To: <201906172157.8E88196@keescook> References: <20190617151050.92663-1-glider@google.com> <20190617151050.92663-2-glider@google.com> <20190617151027.6422016d74a7dc4c7a562fc6@linux-foundation.org> <201906172157.8E88196@keescook> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, 17 Jun 2019 22:07:41 -0700 Kees Cook wrote: > This is expected to be on-by-default on Android and Chrome > OS. And it gives the opportunity for anyone else to use it under distros > too via the boot args. (The init_on_free feature is regularly requested > by folks where memory forensics is included in their thread models.) Thanks. I added the above to the changelog. I assumed s/thread/threat/