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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 CC5D5C4332D for ; Wed, 3 Mar 2021 15:38:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B0A7964EBD for ; Wed, 3 Mar 2021 15:38:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1383976AbhCCPfz (ORCPT ); Wed, 3 Mar 2021 10:35:55 -0500 Received: from mail-out.m-online.net ([212.18.0.9]:51030 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356559AbhCCKrp (ORCPT ); Wed, 3 Mar 2021 05:47:45 -0500 Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4Dr9fN2CZxz1qtd7; Wed, 3 Mar 2021 11:46:36 +0100 (CET) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4Dr9fN1Ftmz1qwjx; Wed, 3 Mar 2021 11:46:36 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id SblTSEWGU7-O; Wed, 3 Mar 2021 11:46:35 +0100 (CET) X-Auth-Info: Axyhjc4rBEzDLbMrWl1hfC1lqjWQmeVKKob8n6+6z1N27WUyAB38JWBlHrVKC9BT Received: from igel.home (ppp-46-244-163-86.dynamic.mnet-online.de [46.244.163.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Wed, 3 Mar 2021 11:46:35 +0100 (CET) Received: by igel.home (Postfix, from userid 1000) id 586712C36B8; Wed, 3 Mar 2021 11:46:34 +0100 (CET) From: Andreas Schwab To: Marco Elver Cc: Christophe Leroy , LKML , kasan-dev , Alexander Potapenko , Paul Mackerras , linuxppc-dev@lists.ozlabs.org, Dmitry Vyukov Subject: Re: [RFC PATCH v1] powerpc: Enable KFENCE for PPC32 References: <51c397a23631d8bb2e2a6515c63440d88bf74afd.1614674144.git.christophe.leroy@csgroup.eu> <3abbe4c9-16ad-c168-a90f-087978ccd8f7@csgroup.eu> X-Yow: Somewhere in Tenafly, New Jersey, a chiropractor is viewing ``Leave it to Beaver''! Date: Wed, 03 Mar 2021 11:46:34 +0100 In-Reply-To: (Marco Elver's message of "Wed, 3 Mar 2021 11:39:02 +0100") Message-ID: <87pn0gy0ol.fsf@igel.home> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1.91 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mär 03 2021, Marco Elver wrote: > On Wed, 3 Mar 2021 at 11:32, Christophe Leroy > wrote: >> ./include/linux/kern_levels.h:5:18: warning: format '%zd' expects argument of type 'signed size_t', >> but argument 3 has type 'ptrdiff_t' {aka 'const long int'} [-Wformat=] >> 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ >> | ^~~~~~ >> ./include/linux/kern_levels.h:11:18: note: in expansion of macro 'KERN_SOH' >> 11 | #define KERN_ERR KERN_SOH "3" /* error conditions */ >> | ^~~~~~~~ >> ./include/linux/printk.h:343:9: note: in expansion of macro 'KERN_ERR' >> 343 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) >> | ^~~~~~~~ >> mm/kfence/report.c:233:3: note: in expansion of macro 'pr_err' >> 233 | pr_err("Invalid free of 0x%p (in kfence-#%zd):\n", (void *)address, >> | ^~~~~~ >> >> Christophe > > No this is not expected. Is 'signed size_t' != 'long int' on ppc32? If you want to format a ptrdiff_t you should use %td. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."