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=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 9DFE0C2D0F0 for ; Tue, 31 Mar 2020 21:58:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C7EC2080C for ; Tue, 31 Mar 2020 21:58:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b="cy44Ew/g" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731530AbgCaV6B (ORCPT ); Tue, 31 Mar 2020 17:58:01 -0400 Received: from ozlabs.org ([203.11.71.1]:58275 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728840AbgCaV6A (ORCPT ); Tue, 31 Mar 2020 17:58:00 -0400 Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 48sNVW6rPHz9sSM; Wed, 1 Apr 2020 08:57:55 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=canb.auug.org.au; s=201702; t=1585691878; bh=2jTbOx6UDNCCJt7scrIlbo1YKUJvdCR9MpDmRqeyOXc=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=cy44Ew/gBN+Xw+PVJYzSfBaD8o7XYDwrdQG2Ru5aNa8rJ1RvmppA9Z/nqM8HrkQlD WcZ+ZhbSgUrWbzWa1tiVu2Gv1vn5OIj88i/GCFVFaBdsvQC4T1mkLIGDIkkSN3L+io ihzdHgDlpLASBlytd9ZKV1N9eohbWrTHoALHpAbBtINWQZfn2N3hBmhkkSAtjoRpa0 hJTWKGpo+29T2Lv471RHjsjPvvyqJK37JaTMhDlODucNr1kpkZg26LqdXWz75iTgpf XN674BdYNhqF3zRP0ZT0R2OOGcGTpenmoB+4zHQ4yYeTZlqp/KoNn+qWg6ft1PZG5C 4R/+9DqWSBcEg== Date: Wed, 1 Apr 2020 08:57:53 +1100 From: Stephen Rothwell To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Peter Zijlstra Cc: Linux Next Mailing List , Linux Kernel Mailing List , Al Viro Subject: Re: linux-next: build warning after merge of the tip tree Message-ID: <20200401085753.617c1636@canb.auug.org.au> In-Reply-To: <20200330134746.627dcd93@canb.auug.org.au> References: <20200330134746.627dcd93@canb.auug.org.au> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/DX5omHHHCR4=V+XF50fjow3"; protocol="application/pgp-signature"; micalg=pgp-sha256 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/DX5omHHHCR4=V+XF50fjow3 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi all, On Mon, 30 Mar 2020 13:47:46 +1100 Stephen Rothwell = wrote: > > Hi all, >=20 > After merging the tip tree, today's linux-next build (arm > multi_v7_defconfig) produced this warning: >=20 > kernel/futex.c: In function 'do_futex': > kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in th= is function [-Wmaybe-uninitialized] > 1676 | return oldval =3D=3D cmparg; > | ~~~~~~~^~~~~~~~~ > kernel/futex.c:1652:6: note: 'oldval' was declared here > 1652 | int oldval, ret; > | ^~~~~~ >=20 > Introduced by commit >=20 > a08971e9488d ("futex: arch_futex_atomic_op_inuser() calling conventions= change") >=20 > but I don't see how it makes this difference :-( I now get this warning from building Linus' tree :-( --=20 Cheers, Stephen Rothwell --Sig_/DX5omHHHCR4=V+XF50fjow3 Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAl6DvOEACgkQAVBC80lX 0GwRPwgAjbTwhKZtLS/8RkEUC6ICv/zAc7X7bQGdchzK8dKf2/fnPo1Sr2bsPWyj bEjfLXoFmSgSKhuy4L2kFvjAdhj5IJVP08+stdbhPfUjuliRI5Buk7Cf8G5s8SHq ZworVHHnHlDuGC19gbdTYKZ3Y6LHYwNv6hi5A/jTFCO9lIUSiEJiJP4C8uIVNS1q VUzj4TTSdKMT1K/lwpcr/uSAnGhFhum91sBM13N5AV9zmSnqWZP8Oh0K5fyhaG2e ga6l6iCxmw9sCswMBTBUN8k8mshFjwNq2PSrpthPGpdmezXeKO7l4S3cjY+CcsrE A+QC4YKMfpm0RrQiizfaGTNdj/8d6Q== =yUPm -----END PGP SIGNATURE----- --Sig_/DX5omHHHCR4=V+XF50fjow3--