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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_NEOMUTT autolearn=ham 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 5CC54C04AAF for ; Fri, 17 May 2019 02:04:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2CE0820645 for ; Fri, 17 May 2019 02:04:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727474AbfEQCEZ (ORCPT ); Thu, 16 May 2019 22:04:25 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59826 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725933AbfEQCEZ (ORCPT ); Thu, 16 May 2019 22:04:25 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CBD83C049E24; Fri, 17 May 2019 02:04:23 +0000 (UTC) Received: from treble (ovpn-120-13.rdu2.redhat.com [10.10.120.13]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 99CB12706D; Fri, 17 May 2019 02:03:57 +0000 (UTC) Date: Thu, 16 May 2019 21:03:39 -0500 From: Josh Poimboeuf To: Miguel Ojeda Cc: Ivan Babrou , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-kernel , Greg KH , Linux Kbuild mailing list , kernel-team Subject: Re: Linux 4.19 and GCC 9 Message-ID: <20190516225013.nvhwqi5tfwtby6qb@treble> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Fri, 17 May 2019 02:04:24 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 16, 2019 at 11:20:54PM +0200, Miguel Ojeda wrote: > > mm/slub.o: warning: objtool: init_cache_random_seq()+0x36: sibling > > call from callable instruction with modified stack frame > > mm/slub.o: warning: objtool: slab_out_of_memory()+0x3b: sibling call > > from callable instruction with modified stack frame > > mm/slub.o: warning: objtool: slab_pad_check.part.0()+0x7c: sibling > > call from callable instruction with modified stack frame > > mm/slub.o: warning: objtool: check_slab()+0x1c: sibling call from > > callable instruction with modified stack frame > > AFAIK those are non-critical, i.e. stack traces may be wrong (or not), > but it does not mean the generated kernel itself is wrong. CC'ing the > objtool maintainers too. I don't think I recognize those warnings. Do you also see them in the upstream kernel? -- Josh