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 225B6C369C2 for ; Tue, 22 Apr 2025 20:12:51 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 49D4B6B0006; Tue, 22 Apr 2025 16:12:50 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 423FB6B0007; Tue, 22 Apr 2025 16:12:50 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 29F636B0008; Tue, 22 Apr 2025 16:12:50 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 00A3A6B0006 for ; Tue, 22 Apr 2025 16:12:49 -0400 (EDT) Received: from smtpin17.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id C408EC1A21 for ; Tue, 22 Apr 2025 20:12:50 +0000 (UTC) X-FDA: 83362778100.17.2F23F85 Received: from relay.hostedemail.com (unirelay01 [10.200.18.64]) by imf16.hostedemail.com (Postfix) with ESMTP id BB25F18000B for ; Tue, 22 Apr 2025 20:12:48 +0000 (UTC) Authentication-Results: imf16.hostedemail.com; arc=pass ("hostedemail.com:s=arc-20220608:i=1") ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1745352768; a=rsa-sha256; cv=pass; b=uK9MN0BBmOHwS0cbr+x7ZCqxWd2GrLr+sdPsRionHaoEIe/4hvV1z3urF+A9veJS/mWWpr BM8Rot5Y9Y5xBQvPyPAZCeV1roqAjBBHyzwnJb4Re8MlD+m/GbSvFur5rcbeRpxerIkeXJ fvVYObS3jkLZlbas1WKW77KY2PJXz84= ARC-Authentication-Results: i=2; imf16.hostedemail.com; arc=pass ("hostedemail.com:s=arc-20220608:i=1") ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1745352768; 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=dVOO4FECg+9NJsKKLil+dETSJfiG7/PGQI5pErARk6A=; b=8AYRbZTI43JCm1Hb8bzLRIhIl6O/jbyKS7NNQwtcqBLMwdRbombVkHsXHr77k48n7+dAOm 16QhnzcWXZyUXvRz8c+j6bGpcDQYDavea7ZAkivpCtKW5Zkz2wjzKEua+3tGSxksfWhMM5 GAiWeO9Z9EP/ESsvQELsWfMyiOJPpDk= Received: from relay.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 5B28F1D026B for ; Tue, 22 Apr 2025 20:12:48 +0000 (UTC) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 2CC7DBA085 for ; Tue, 22 Apr 2025 20:12:48 +0000 (UTC) X-FDA: 83362778016.06.B5384E0 Received: from nyc.source.kernel.org (nyc.source.kernel.org [147.75.193.91]) by imf09.hostedemail.com (Postfix) with ESMTP id 8F5FA140004 for ; Tue, 22 Apr 2025 20:12:46 +0000 (UTC) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1745352766; 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=dVOO4FECg+9NJsKKLil+dETSJfiG7/PGQI5pErARk6A=; b=IMoQY63ZVzJe1CQatUy6vW+7yCf0AVvnjSAxCTuGEg2a2b3TsCcQBaJm1DH3ELVs34GScy VfofTPPmv9vADECQPXm/NmQaFkqLTIdepdtaSTSmc/eKr4e2aMWt+wm0grp5oZb5ZpRnSj 1jHx3V5PPYFIW4lp6tY1B8Ee3Ro2GsE= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=aetyBQo+; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf09.hostedemail.com: domain of nathan@kernel.org designates 147.75.193.91 as permitted sender) smtp.mailfrom=nathan@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1745352766; a=rsa-sha256; cv=none; b=GURMjMBHaAc1Rv2U1UHqYbcM4dwWRNfH/FFbqIgJAlOvqrbwOJAAS3PXJZtoPEHpHExuLa wKXPBka496Yd2EkEZUUit5Yt4TOADeVcwGO5JPp/uH2PyfPKRAD1APZE0K7UwLDhk8J6kw 0VXHDRgnNZ5ZxLf0dPTzo07w5OFPJ+I= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id AD0C7A49F39; Tue, 22 Apr 2025 20:07:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA7ECC4CEEB; Tue, 22 Apr 2025 20:12:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745352765; bh=7k8XxwrGOAJgEq952KWo4KYigCszYv7eUvZUK+4PgjA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aetyBQo+RRTNxCYB64yKCsrhSJhZFYtKIroTxKspqjNgtXAXEMXR1W/kkFGf03hKI e0IecnRX0qivMAcujpG4HWRPjcHSfIQvyW4Lc/NvQ5Y5h18MyYuyk84bOhuOfPFMC7 3uBxim7hHZyRkULOlKSXENSjEUsQ7IgUmv1ahtgLvTF2I3Dw+1zxQ/PFzgbLXbD9dO Z84kLfBPC9YF9CAXjJ6i0TLg3zjnPO/nnDVNt4BRhCamYIsxJHzu2wiQLWSofaR/dI gypHFMxbVu0aI6BpNMdCU/b4aklRHq2iT+iZUsoMmJXpPkIn8siZWEZoOuMOtAq+gn Du4DqV5NhLByQ== Date: Tue, 22 Apr 2025 13:12:41 -0700 From: Nathan Chancellor To: Andrew Morton Cc: Mark Tinguely , llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, kernel test robot , Linux Memory Management List , "Matthew Wilcox (Oracle)" , Joseph Qi Subject: Re: [akpm-mm:mm-nonmm-unstable 66/67] fs/ocfs2/aops.c:1133:17: warning: variable 'i' is uninitialized when used here Message-ID: <20250422201241.GA3761951@ax162> References: <202504190950.rq1NDlDz-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202504190950.rq1NDlDz-lkp@intel.com> X-HE-Meta: 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 3nAvH+Zu cQSLqg+qVXuXTBHGoSMF4B45wgMXoHmmEsFAk523qHh0lnzvFe3ypNNkt5BURSascuzqjhO2Q4qoxzg+6hsHGEJRSeyQlN6dVd/M9uSzME0U80abXCv0DScvQiK3JPBNJWpmiHIV4sarovc4B2bA3LGKbmnwlaQjmOAvcfP4wCM2Whldqyy6ISPl+QJKQawSTCaICb56wqo//guBmBZ2OhqjEWt73OV+h3BF5h023lG5Hw6Qy2UaXRg+CVPnSAbikmEgSrJhpXkZ3bc33shgHR2v+/xqrtusdD00GNNAOvZ1BtyFcWRvV4scDXRr+86FrZQDxkJMczh3czGI8RyjnJ0E7/nr7V45tH0OaE8xNq7Q6aqz2mFcCtrEaz2miqUvEmC4TcR4zkIipXdZNafVPtjsfeQ== X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: BB25F18000B X-Stat-Signature: z4p5zq9b1saseusgtgieffyejtmn3kxu X-Rspam-User: X-HE-Tag-Orig: 1745352766-35505 X-HE-Tag: 1745352768-319200 X-HE-Meta: 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 PRLvt/wf BeXM1ymKP4kK3Cd4SS0anX52RK4J9SlizlJQNGLR3RKGIXvI8JMt+9Agkcb9kEKLVDyqjCX0i7dLcIaYwZ9gRpK6tWIDHWx6bYDYZXLgEECU7bleeMFgS4bJHJI7KCkDeHY/J2Jc+Wo+6K+u2YO/uqem9cbHjLpfHBR0OtLxBN+01IS45YdMLJK1xtGlEaB9qcKhAt4s69eT5fKLkWJdQZoTngVke2BrlP5tzh4OvyaXsiEbfK+Zf4DIyAKMC1eQ2gh9LHJX5xt6nU58GzwBeQ3oDB1geh2Z4VD1DUG11g9CLjdoTzChqabfG1cw0Ur1TuxLeraHChJRbHvFeq3kSC3FLRQ== 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: List-Subscribe: List-Unsubscribe: Hi Andrew, On Sat, Apr 19, 2025 at 09:21:13AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable > head: d1a9b961293d30be9a865d8685590635db282957 > commit: 89e3e963129e945e0333e474709bde627b6a9cee [66/67] ocfs2: fix panic in failed foilio allocation > config: s390-randconfig-001-20250419 (https://download.01.org/0day-ci/archive/20250419/202504190950.rq1NDlDz-lkp@intel.com/config) > compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250419/202504190950.rq1NDlDz-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot > | Closes: https://lore.kernel.org/oe-kbuild-all/202504190950.rq1NDlDz-lkp@intel.com/ > > All warnings (new ones prefixed by >>): > > >> fs/ocfs2/aops.c:1133:17: warning: variable 'i' is uninitialized when used here [-Wuninitialized] > 1133 | wc->w_folios[i] = NULL; > | ^ > fs/ocfs2/aops.c:1101:12: note: initialize the variable 'i' to silence this warning > 1101 | int ret, i; > | ^ > | = 0 There appears to be something funky going on with "ocfs2: fix panic in failed foilio allocation" in your tree, perhaps as a result of applying v2 to mm-nonmm-unstable and v1 to mm-hotfixes-unstable? If you compare https://git.kernel.org/akpm/mm/c/392a664f6d2740eeae23df0d29b56f444f558a7c to https://lore.kernel.org/c879a52b-835c-4fa0-902b-8b2e9196dcbd@oracle.com/, the second hunks do not match, which is what this is warning about. I see this same warning in next-20250422. Cheers, Nathan