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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E327C4332F for ; Mon, 21 Nov 2022 11:36:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231370AbiKULgL (ORCPT ); Mon, 21 Nov 2022 06:36:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231270AbiKULfv (ORCPT ); Mon, 21 Nov 2022 06:35:51 -0500 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 45172BF597 for ; Mon, 21 Nov 2022 03:32:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=MhKhD9m2/0VFhnbA/V+dlzuPgzWihjvXSSVAZ4aiFOI=; b=Pzx1qJbYR4uWKHV3HpkOi4De/Y pCTyV5ThdkQih4wFqFR+Lk6JMo8RWI+qZjdAYWZVyS8+HFcmpc975wGWVoX/6ucfgi9ey5LHh1y4z XsrAkosbz0Nk2GwebPNdPCdUHgVntL1eciSbHj/foAtAhLBaYhrhB/pJB6MCe5k8lH8XMrRcOIuyM 2dnnD1R2g4GLmVpJfJ0HS9hyq8MdDElmelzrgvuoBeCij11lIIn0FOM8+qdHCQUA0gDUpPtBBbNye vARS/UPo7NR9e1H5XVH6SLpWoKKKCKtuqpEWBu41tV6SSVOIRQtdvMO07vv7or+5tRE84D/l49Mbt xgrJaK/Q==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox51r-0035fY-2H; Mon, 21 Nov 2022 11:31:59 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 4C7C4300244; Mon, 21 Nov 2022 12:31:57 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 9CBEE203A8993; Mon, 21 Nov 2022 12:31:57 +0100 (CET) Date: Mon, 21 Nov 2022 12:31:57 +0100 From: Peter Zijlstra To: "Paul E. McKenney" Cc: jpoimboe@kernel.org, sfr@canb.auug.org.au, linux-kernel@vger.kernel.org Subject: Re: objtool warning for next-20221118 Message-ID: References: <20221121040736.GA3738360@paulmck-ThinkPad-P17-Gen-1> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221121040736.GA3738360@paulmck-ThinkPad-P17-Gen-1> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Nov 20, 2022 at 08:07:36PM -0800, Paul E. McKenney wrote: > Hello! > > I have started getting this from rcutorture scenario TREE09: > > vmlinux.o: warning: objtool: do_idle+0x25f: unreachable instruction > > Should I be worried? Typically not a scary warning that. > If so, please let me know what additional information you need. .config and compiler version so that I might recreate and observe what it's complaining about would help :-)