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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 39EDAC4724C for ; Fri, 1 May 2020 03:56:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0767E20836 for ; Fri, 1 May 2020 03:56:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="g4HrP8Bq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728150AbgEAD4v (ORCPT ); Thu, 30 Apr 2020 23:56:51 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:37697 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727889AbgEAD4v (ORCPT ); Thu, 30 Apr 2020 23:56:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588305410; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=bXalt8zK+YdFYaEr91Rzg8c48giwHyBf2CnOS3ryAnE=; b=g4HrP8BqXk4dZFfJBE4sewsZrQNTx3zDynKz+bmqCUXCLKdCyQby8RbRFVYZToHIssirNt SLskPdBPVzJEjv4244XsBahZkvIrX93fbYkXRy2Afa9oBC2QMz4y7CLR+/mGdVCrbWckc4 F6KhmNSTJlB9WeqBJgFt387GuFrENYY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-494-LWnWZ9qkMw6JQyRYU5-6Mw-1; Thu, 30 Apr 2020 23:56:48 -0400 X-MC-Unique: LWnWZ9qkMw6JQyRYU5-6Mw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 45077186E6F9; Fri, 1 May 2020 03:56:47 +0000 (UTC) Received: from treble (ovpn-113-19.rdu2.redhat.com [10.10.113.19]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 8B583579A5; Fri, 1 May 2020 03:56:46 +0000 (UTC) Date: Thu, 30 Apr 2020 22:56:44 -0500 From: Josh Poimboeuf To: Randy Dunlap Cc: Stephen Rothwell , Linux Next Mailing List , Linux Kernel Mailing List , Peter Zijlstra Subject: Re: linux-next: Tree for Apr 30 (objtool warnings) Message-ID: <20200501035644.i7woe5bpyxqwjpwh@treble> References: <20200430174019.417e5f3e@canb.auug.org.au> <8eedaa40-c93d-428e-47aa-ee1e6b6d69e6@infradead.org> <9005add6-3b90-f9f0-eb56-6e309853eb7f@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <9005add6-3b90-f9f0-eb56-6e309853eb7f@infradead.org> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Sender: linux-next-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Thu, Apr 30, 2020 at 07:40:52AM -0700, Randy Dunlap wrote: > On 4/30/20 7:31 AM, Randy Dunlap wrote: > > On 4/30/20 12:40 AM, Stephen Rothwell wrote: > >> Hi all, > >> > >> Changes since 20200429: > >> > > > > on x86_64: > > > > kernel/exit.o: warning: objtool: __x64_sys_exit_group()+0x2e: unreachable instruction > > kernel/cred.o: warning: objtool: copy_creds()+0x278: unreachable instruction > > net/core/skbuff.o: warning: objtool: skb_push()+0x9e: unreachable instruction > > > > > > Full randconfig file is attached. > > > > oops, forgot to Cc: Josh and Peter. These are all related to -flive-patching, for some reason it reduces GCC's ability to detect local noreturn functions. I had some patches for these (and more) I'll need to dig up. -- Josh