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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 739F4C35646 for ; Fri, 21 Feb 2020 14:14:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 52EA52073A for ; Fri, 21 Feb 2020 14:14:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728803AbgBUOOh (ORCPT ); Fri, 21 Feb 2020 09:14:37 -0500 Received: from verein.lst.de ([213.95.11.211]:55653 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727851AbgBUOOg (ORCPT ); Fri, 21 Feb 2020 09:14:36 -0500 Received: by verein.lst.de (Postfix, from userid 2407) id 3716C68C4E; Fri, 21 Feb 2020 15:14:34 +0100 (CET) Date: Fri, 21 Feb 2020 15:14:33 +0100 From: Christoph Hellwig To: Will Deacon Cc: linux-kernel@vger.kernel.org, kernel-team@android.com, akpm@linux-foundation.org, "K . Prasad" , Thomas Gleixner , Greg Kroah-Hartman , Frederic Weisbecker , Christoph Hellwig , Quentin Perret , Alexei Starovoitov , Masami Hiramatsu Subject: Re: [PATCH 3/3] kallsyms: Unexport kallsyms_lookup_name() and kallsyms_on_each_symbol() Message-ID: <20200221141433.GD6968@lst.de> References: <20200221114404.14641-1-will@kernel.org> <20200221114404.14641-4-will@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200221114404.14641-4-will@kernel.org> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 21, 2020 at 11:44:04AM +0000, Will Deacon wrote: > kallsyms_lookup_name() and kallsyms_on_each_symbol() are exported to > modules despite having no in-tree users and being wide open to abuse by > out-of-tree modules that can use them as a method to invoke arbitrary > non-exported kernel functions. > > Unexport kallsyms_lookup_name() and kallsyms_on_each_symbol(). Looks good, Reviewed-by: Christoph Hellwig