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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 E8ADBC2D0E5 for ; Wed, 25 Mar 2020 17:47:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B84FD2074D for ; Wed, 25 Mar 2020 17:47:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="hpKyr6kd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727979AbgCYRrv (ORCPT ); Wed, 25 Mar 2020 13:47:51 -0400 Received: from merlin.infradead.org ([205.233.59.134]:58362 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727253AbgCYRrt (ORCPT ); Wed, 25 Mar 2020 13:47:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Subject:Cc:To:From:Date:Message-Id: Sender:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To:References; bh=eVNvwVJQBlEZzfJXg4Z7qLVAlQDZSb9x/PxITKasAU8=; b=hpKyr6kdav8figazrMeAdXaHl5 3E9975mKw524ZM/z1HG8Tvk/Cs4r8DBJzkCmGld3oAMZ50l90ZEH9iungFEvRDjhWEbhgoKMV+sLw Q4+5zo3s1XG8fiC33NSVbRL8aGqb5zqZ8Tqa1Q8SKnnSLbCDhtJQElmpowK9ZuAlh2jWVVN6XyjHq 32tOD8S4fTwYm9mMerFsDGJjixfGpgiwO9Fmm8k/L90uR7CDZQ2X9Cne9iKpej2deNuJ8RQBbeWkN XdDBDK2izHaIZdD53y3DTslCn55yYa7oY3BpYRX0UIVp9lwknXhJY+5ZRi+fZxGkX8HJHAnn6pc+n nJ3Zggig==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jHA80-0003oU-8O; Wed, 25 Mar 2020 17:47:44 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id AF9223007F2; Wed, 25 Mar 2020 18:47:42 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 9EF6829BD8A27; Wed, 25 Mar 2020 18:47:42 +0100 (CET) Message-Id: <20200325174525.772641599@infradead.org> User-Agent: quilt/0.65 Date: Wed, 25 Mar 2020 18:45:25 +0100 From: Peter Zijlstra To: tglx@linutronix.de, jpoimboe@redhat.com Cc: linux-kernel@vger.kernel.org, x86@kernel.org, peterz@infradead.org, mhiramat@kernel.org, mbenes@suse.cz Subject: [PATCH v4 00/13] objtool: vmlinux.o and moinstr validation Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, This lacks the first 17 patches of the v3 posting which are en-route to tip/core/objtool and should show up there somewhere later this evening. As should be familiar by now; these patches implement the noinstr (no-instrument) validation in objtool as requested by Thomas, to ensure critical code (entry for now, idle later) run no unexpected code. Functions are marked with: noinstr, which implies notrace, noinline and sticks things in the .noinstr.text section. Such functions can then use instr_begin() and instr_end() to allow calls to code outside of this section in sanctioned areas.