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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 854A6ECAA24 for ; Thu, 25 Aug 2022 16:10:12 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1C0F8940009; Thu, 25 Aug 2022 12:10:12 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 170A1940007; Thu, 25 Aug 2022 12:10:12 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 03742940009; Thu, 25 Aug 2022 12:10:11 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id E99BE940007 for ; Thu, 25 Aug 2022 12:10:11 -0400 (EDT) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id A9A03120371 for ; Thu, 25 Aug 2022 16:10:11 +0000 (UTC) X-FDA: 79838601822.11.CCD26BE Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf29.hostedemail.com (Postfix) with ESMTP id 5F263120003 for ; Thu, 25 Aug 2022 16:10:11 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8197261B74; Thu, 25 Aug 2022 16:10:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AC67DC433C1; Thu, 25 Aug 2022 16:10:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1661443809; bh=YeZpqXiWIj2UfGQAr0U2HYO2aQK9k8WY7/sp89p4GTs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aaMwx8JKmkkb6t5r8pvyF2YpWKpX4SjF9KqZKXHKxAL2bkLj59sosnMbT7KLDUXeC MuZWH6jEnAENICgMXZmj9CyIeWZ+czj2hzTq+ho/6licNb3A79kj1ztNs829U+02RU 8EP7yZJje2Ytht8AmmDi0pymRSWyH8oBa0sKGWHEODAaouA1/NuEvpUbZL2Lqg0iDx cgW2AjPInr+1TzJpqxo+ByAWUS0UB7hrTOBH8Eyt3bTQib9A/pAbTq+UycoR7NWyIR FD4f9HKnND++p5ItBYfnfD+z28AEdJcFaONZgYX4lKwG+PkJgLKel3wDhWV0ERgRBK DfrtefSXYKcuQ== Date: Thu, 25 Aug 2022 09:10:07 -0700 From: Nathan Chancellor To: Naresh Kamboju Cc: Mike Kravetz , linux-mm , Andrew Morton , open list , regressions@lists.linux.dev, clang-built-linux , Muchun Song , Andrea Arcangeli , "Aneesh Kumar K.V" , Axel Rasmussen , David Hildenbrand , Davidlohr Bueso , James Houghton , "Kirill A. Shutemov" , Miaohe Lin , Michal Hocko , Mina Almasry , Naoya Horiguchi , Pasha Tatashin , Peter Xu , Prakash Sangappa , llvm@lists.linux.dev Subject: Re: [next] x86: fs/hugetlbfs/inode.c:673:16: error: variable 'm_index' is uninitialized when used here [-Werror,-Wuninitialized] Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: ARC-Authentication-Results: i=1; imf29.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=aaMwx8JK; spf=pass (imf29.hostedemail.com: domain of nathan@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=nathan@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1661443811; a=rsa-sha256; cv=none; b=a5d4bfcI0nlHj9Tb4KKQiR6QOX2vZK4xQX0gGIPYrRxF35Xpg0Zr1J0zEwwSq/rOaKaZRH YcbEXT1daDXEIdp4oOWuALxbojrTjIejjASIKIAeSxascyX7R/Nr1cul72VxDajuu3vYvG mIyZl6ekNL+2RSUSkTS+ZpmyfXwl2vI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1661443811; h=from:from:sender: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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=Ms++I9boNJcp08ZZglr6Rl4X3DiiaQr4Ry77/khSHpI=; b=H0DQIrOng0d5rBTsRtJyzdZMUDDeFdzFafqdAi0qSotgK1FH6xn94N8RJjaWBzPb8rkHSr Fre8zu3MeRSshVMqbrDzjeCnKf71nt2UlEuwA8Bzhy28wutw8BqU32epemQGm3CQbOLeey MdD9gkhO8Vq1vmAzgXmhD/oaYgTJzPM= X-Rspam-User: X-Rspamd-Queue-Id: 5F263120003 X-Stat-Signature: n3e34fabdyqo3czt7os7cf8hm96nciia Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=aaMwx8JK; spf=pass (imf29.hostedemail.com: domain of nathan@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=nathan@kernel.org; dmarc=pass (policy=none) header.from=kernel.org X-Rspamd-Server: rspam01 X-HE-Tag: 1661443811-534895 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi Naresh, On Thu, Aug 25, 2022 at 04:13:30PM +0530, Naresh Kamboju wrote: > The x86_64 and i386 clang builds failed due to these warnings / errors > on Linux next-20220825. > > Reported-by: Linux Kernel Functional Testing > > fs/hugetlbfs/inode.c:673:16: error: variable 'm_index' is > uninitialized when used here [-Werror,-Wuninitialized] > m_start, m_index, truncate_op); > ^~~~~~~ > fs/hugetlbfs/inode.c:651:26: note: initialize the variable 'm_index' > to silence this warning > pgoff_t m_start, m_index; > ^ > = 0 > 1 error generated. Thank you for the report! Commit fcc0d3d00d74 ("hugetlb: handle truncate racing with page faults") introduced this warning; the Intel folks caught this as well: https://lore.kernel.org/202208251012.g1mOhhxy-lkp@intel.com/ As an aside, can you please update your contact for our mailing list to llvm@lists.linux.dev? We do not use the Google Groups list anymore. Cheers, Nathan