Received: by 2002:a05:6358:d09b:b0:dc:cd0c:909e with SMTP id jc27csp4106673rwb; Mon, 21 Nov 2022 03:55:59 -0800 (PST) X-Google-Smtp-Source: AA0mqf7duVmjKXZe89g+p6GswiK6pkU/V8KNa6OZf9wF/BG1jgqonGFI060V/PsxI8OXyjjyaFU5 X-Received: by 2002:a17:907:8c8e:b0:78d:4167:cf08 with SMTP id td14-20020a1709078c8e00b0078d4167cf08mr101092ejc.337.1669031759434; Mon, 21 Nov 2022 03:55:59 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1669031759; cv=none; d=google.com; s=arc-20160816; b=CObb/iny8M+oe9WIt8WZCXRmRJ349N2555NvbY+9Do/erS/sdL0mfuGVH49rS3Lh7K 2NNvae4ZWTrt2AZooP8lBXai9wEUolEkgiDfGJxdXY9LU36BhPZhW4tiGcO3Sy1DjBuV AcmUKgrH6KwvlIUn+wBqtTv8VmDdlBKRB0R6gCn8C3OCpjFcIwh+v2YxphS/WvIQXRiX Aeo26iWuLlfnqN2rM1Zo39nrC5DDYJRq1IpmLr0dWvbeED27V/jygTS77S0I/XYyyXeZ 6038VQbJ6eKC2l/0/Y07VbTlRw0R7bdxtC1HfXm1FPslB3qq9oFE0o7DBKBHOzXwlwo7 xoQw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=MhKhD9m2/0VFhnbA/V+dlzuPgzWihjvXSSVAZ4aiFOI=; b=L7hTFgrQr/wFVh244347dG6gjHgM3ATPmHV+EEtsll2AE6WcmUkvF5rWEOGWmaCtlo zg/Ljh/p2ui66SLvkZyuVV6pbcsB98wXB5zyR0Eg5NxoxWEZiUmWzidiF2eEOBLDxOeW 4/5GuR/MAMuHZadtpqWS7aBb1WaNktIUalCabaIV52M+iZX9JOhEQN6MSZmdahdprmpp boAOSRW245Qqplm11w+33y9je9x6lON7IM3z159Y4BlICIKXuUgUuqClh0xiaRr3ggPn bBEi8N3MOndWnWF/myo5pmuoK0gaKzoHwRPHRhY/PcgEZ+EHV3GaKIVljOithBlgiw6+ 6Spg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@infradead.org header.s=desiato.20200630 header.b=Pzx1qJbY; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id u21-20020a1709064ad500b0078cc4a8a956si7225809ejt.881.2022.11.21.03.55.35; Mon, 21 Nov 2022 03:55:59 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=desiato.20200630 header.b=Pzx1qJbY; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231367AbiKULgK (ORCPT + 92 others); Mon, 21 Nov 2022 06:36:10 -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> X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net 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 :-)