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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B61CC76195 for ; Mon, 27 Mar 2023 23:47:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229614AbjC0Xrt (ORCPT ); Mon, 27 Mar 2023 19:47:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229464AbjC0Xrq (ORCPT ); Mon, 27 Mar 2023 19:47:46 -0400 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1A86C1B8; Mon, 27 Mar 2023 16:47:44 -0700 (PDT) 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 4PlqHZ0nKXz4wj7; Tue, 28 Mar 2023 10:47:38 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canb.auug.org.au; s=201702; t=1679960859; bh=mE6ZWZFMqxR2adS0ArGXuJsCZc7MucNRR2NBIDM+e4A=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=CDUqV0yH1bNMJJDXyqMMAgT7xqc7WcIEXBdW0VFNfzU6MGA3JdOwyRdi+kKl8RkZy L9UmQCF4AaF8VxEkEjzpHAEzR7sNvhLIeiZ1QoVcYk7BB5CUdy1pBvWKEbuDIUHKEX UiecRk+1i7tNmOvHJSt3CF4nE3kaT4zgniXeaPFgkCYuWl1ezi7Hwaj8rqLWM4pP2X us+AUQzPLducBuFpLMB6kV9RQFDsyHNrqGvy3iWX+quUO78BI9YSAM9AhINxvh+ytj /hHdz3dUuH1BStWygTMsMUMg7kMvPnd/9Su3ZFwNzQsH6a7k2yZ7alQMWobZMYY9Y7 xiK2G9qScjyjA== Date: Tue, 28 Mar 2023 10:47:19 +1100 From: Stephen Rothwell To: Josh Poimboeuf Cc: Jens Axboe , Peter Zijlstra , Linux Kernel Mailing List , Linux Next Mailing List Subject: Re: linux-next: build warnings after merge of the block tree Message-ID: <20230328104719.65133586@canb.auug.org.au> In-Reply-To: <20230327162630.wmxpycxhllt4clpt@treble> References: <20230327120017.6bb826d7@canb.auug.org.au> <20230327162630.wmxpycxhllt4clpt@treble> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/iL.VgJZERbHq89f.1B7mz_K"; protocol="application/pgp-signature"; micalg=pgp-sha256 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/iL.VgJZERbHq89f.1B7mz_K Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi Josh, On Mon, 27 Mar 2023 09:26:30 -0700 Josh Poimboeuf wro= te: > > On Mon, Mar 27, 2023 at 12:00:17PM +1100, Stephen Rothwell wrote: > >=20 > > After merging the block tree, today's linux-next build (x86_64 > > allnoconfig) produced these warnings: > >=20 > > lib/iov_iter.o: warning: objtool: .altinstr_replacement+0x0: redundant = UACCESS d > > isable > > lib/iov_iter.o: warning: objtool: iovec_from_user.part.0+0xc7: call to = copy_comp > > at_iovec_from_user.part.0() with UACCESS enabled > > lib/iov_iter.o: warning: objtool: __import_iovec+0x21d: call to copy_co= mpat_iovec_from_user.part.0() with UACCESS enabled > >=20 > > Presumably introduced by commit > >=20 > > 6376ce56feb6 ("iov_iter: import single vector iovecs as ITER_UBUF") = =20 >=20 > I'm not able to recreate. What's your compiler version? $ x86_64-linux-gnu-gcc --version x86_64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0 --=20 Cheers, Stephen Rothwell --Sig_/iL.VgJZERbHq89f.1B7mz_K Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAmQiKwcACgkQAVBC80lX 0GzHMwf/XCukPnOhDu0//9VDm+QTIKR53e2mG83gWn6dopOLQyVUVyuaD79T1Neo OW6JBElqRA1exIuhnrFXpI8GRn03svU7yZ3pbEy5zar6hKzqz+8vNepjyxlOmk5o lvUjJAzPUQjknqyAa7s+GIKhi1X/UuNEyR4Jzq1UzSD0vBXVu19Z1fkLqethK5Eu 4niAxahxoERRnKP997iCIrDfG+6bQ54KWrJ0FK2+WhV8DuhTZVSg7agU4bW22/lx NdzG5Mwt+XdAjtsFaqrI67MXhFfE7zKDuLBYb75z8LME1rou/LeGWECGutZ8CMtw 6DO298jputtXpFi1AUC14h09zJyFZQ== =s1DJ -----END PGP SIGNATURE----- --Sig_/iL.VgJZERbHq89f.1B7mz_K--