Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752792AbdLDQmw (ORCPT ); Mon, 4 Dec 2017 11:42:52 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:34994 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752674AbdLDQmn (ORCPT ); Mon, 4 Dec 2017 11:42:43 -0500 Date: Mon, 4 Dec 2017 08:42:40 -0800 From: Christoph Hellwig To: Paul Lawrence Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Masahiro Yamada , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kbuild@vger.kernel.org, Matthias Kaehlcke , Michael Davidson , Greg Hackmann Subject: Re: [PATCH v3 3/5] kasan: support alloca() poisoning Message-ID: <20171204164240.GA24425@infradead.org> References: <20171201213643.2506-1-paullawrence@google.com> <20171201213643.2506-4-paullawrence@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171201213643.2506-4-paullawrence@google.com> User-Agent: Mutt/1.9.1 (2017-09-22) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 173 Lines: 3 I don't think we are using alloca in kernel mode code, and we shouldn't. What do I miss? Is this hidden support for on-stack VLAs? I thought we'd get rid of them as well.