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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,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 2E717C43215 for ; Fri, 15 Nov 2019 16:38:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0722320718 for ; Fri, 15 Nov 2019 16:38:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ItJshpSt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727615AbfKOQij (ORCPT ); Fri, 15 Nov 2019 11:38:39 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:22387 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727531AbfKOQij (ORCPT ); Fri, 15 Nov 2019 11:38:39 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1573835917; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6fENKbkRp6IkVJsqfQWI1tPw8ogr4wWzSPjFy8i7mms=; b=ItJshpStFRX1cWzQp3Ayyvb1GjvrfKoyYPDDPnRpAsZu7L1ncHbS+Mbw2c2abDBHh3kS41 INIpjmpQh2kKnqfe+D+tcGKJLD4g9vUa9W7ddsbfYK3mpXYmAM959IIUkz5/bNuci5db4m l/FTqXlTvSdGluI9GuTb9U4+9wcrKbg= 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-281-hWEbCo_AMMG0C_3DEUsPiQ-1; Fri, 15 Nov 2019 11:38:34 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 622D1107ACFA; Fri, 15 Nov 2019 16:38:33 +0000 (UTC) Received: from treble (ovpn-120-26.rdu2.redhat.com [10.10.120.26]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 98BED60FC1; Fri, 15 Nov 2019 16:38:32 +0000 (UTC) Date: Fri, 15 Nov 2019 10:38:30 -0600 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 Nov 15 (objtool) Message-ID: <20191115163830.g262y75w3sh535fm@treble> References: <20191115190525.77efdf6c@canb.auug.org.au> MIME-Version: 1.0 In-Reply-To: User-Agent: NeoMutt/20180716 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: hWEbCo_AMMG0C_3DEUsPiQ-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Sender: linux-next-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Fri, Nov 15, 2019 at 08:02:30AM -0800, Randy Dunlap wrote: > On 11/15/19 12:05 AM, Stephen Rothwell wrote: > > Hi all, > >=20 > > Changes since 20191114: > >=20 >=20 > on x86_64: >=20 > already reported and Josh supplied a fix (yet unmerged), > but this is still around: >=20 > kernel/exit.o: warning: objtool: __x64_sys_exit_group()+0x14: unreachable= instruction My apologies, I have a growing backlog of objtool fixes which I hope to post next week. >=20 > new AFAIK: >=20 > drivers/gpu/drm/bridge/cdns-dsi.o: warning: objtool: cdns_dsi_bridge_enab= le()+0x3e0: unreachable instruction >=20 > obj file for latter one is attached. This seems fishy. cdns_dsi_init_link() never returns, it always dies a with UD2. I bet GCC decided that it always does a divide-by-zero, and so it forces a crash as a result. Will try to dig deeper next week... --=20 Josh