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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham 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 3A862C606B2 for ; Mon, 8 Jul 2019 12:52:24 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E84D92064A for ; Mon, 8 Jul 2019 12:52:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E84D92064A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arndb.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 66DA88E0013; Mon, 8 Jul 2019 08:52:23 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5F7C58E0002; Mon, 8 Jul 2019 08:52:23 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 497088E0013; Mon, 8 Jul 2019 08:52:23 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-wr1-f72.google.com (mail-wr1-f72.google.com [209.85.221.72]) by kanga.kvack.org (Postfix) with ESMTP id EEA818E0002 for ; Mon, 8 Jul 2019 08:52:22 -0400 (EDT) Received: by mail-wr1-f72.google.com with SMTP id s18so8162301wru.16 for ; Mon, 08 Jul 2019 05:52:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:from:to:cc :subject:date:message-id:mime-version:content-transfer-encoding; bh=77Vp1juDzlRrpvVnwfZYS6xDqW19KpmeFqUsetecy2o=; b=PLI4LzbrjaUEP9+aHKdpSTDSprg25vg4aQkgHsqWcgfwxBpoiP/LGcEY1LDtGmCWKl Rdm5A50valyX1B6KW/q+VQr988v1lBjYeQvyN1FmArcuvEd5LpVXwyfrmG1w52ifwC8V lbIO486sg8J10uG4Lll14M4iN874xtFeSnJES/cDv7DPri7Sctjhn1AU6ve+tTJasgiz JiVJ3qwb4VhvM04x9x7ilO4KUpsdupRCtbdy2qoxXJkFqEXuzVV4nGIASRU70q6lZYey /7on/vI01U6S5PS3807LivhQ+1G47H8D7YH0DCejkWhgUvT6fZl3xlROI1gOBJ/LxH3D mnvA== X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 212.227.126.187 is neither permitted nor denied by best guess record for domain of arnd@arndb.de) smtp.mailfrom=arnd@arndb.de X-Gm-Message-State: APjAAAUbe6pR/Ir/EoAoM5EYKmW1oDmeWiGIt6yJRLy8WzjwF+5jEiJf oAcHDkNg6tBwCyOMgMZnOT9RBKOKwNiVoFrj6lB664yG/GYw0sE/IcgAH08sBw8zorvZBTomf2F a7u3kjuon3FoTanZMFooy3XACHJbW3rAX6kZOqezvFzGOnJrBqXbsULyFUJjx77o= X-Received: by 2002:a7b:c632:: with SMTP id p18mr12801369wmk.114.1562590342566; Mon, 08 Jul 2019 05:52:22 -0700 (PDT) X-Google-Smtp-Source: APXvYqy438arRxcrlddLk7j3QKwhlxsEvuHanJTh/M4v3ydpeb07kvCUX8nOS62VfrgJe80guDny X-Received: by 2002:a7b:c632:: with SMTP id p18mr12801334wmk.114.1562590341776; Mon, 08 Jul 2019 05:52:21 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1562590341; cv=none; d=google.com; s=arc-20160816; b=ZZGHKy0YDE5H/LFDt50YpGuKCIYcxDuyqI1F9b4Zpnai49QzU3bGYI3j6oZx5KiJ1k Sn5iMajlWC6DdfqqkF5z6XN85GefuJVdWfSEW2zGewz1tH63iMm01VqcPuVZBRHPQX8i fnfMjwJ2yCZa4Kiv4JbWLhBKrIP0MufopYbTTsrYdJIKH+ol+VZE6pgOJf1wCNu/dX4x ccq/SVXXYpshA9YGrol2FozczUGK//xKP9/WtV+b1TAQWZbxQFeiDR8NDIoajet/nXws DnDSmCYGKpjxAMD2MK7Lv1z5GkJf+euwpcvdpqriTgKmoQW3dBB+CUPiugDAZ0k4bNYM kavw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from; bh=77Vp1juDzlRrpvVnwfZYS6xDqW19KpmeFqUsetecy2o=; b=dErV2FVZKMEk/1nSbpS31p2RKXXOlnWMGlqL8M8P80gMMJPdTvoW+ER2hoHhjvNSVM z0a7liGPM6mgrS0zw6ccxuh4s3pNRX7Lvc7zL0/f0qFx3SDPASVkxatyNGZMkGgRd8fm uekNqNTJM/c6zHVs1rIFTrLZMH5UgIkAC0dNWsInbSDOC7Jg+ydh2hIJSePQySO+mt8c 698slO0USYifUV7l8FTFhHPJqWqh0AFiovnvQTXphD/NavKRxPYDN4fEx8RRyLAsIUD/ Vq97tPI7PzsvFLk8hnXVu00bbZP0mJasy9T4Ulw73ru4WpjzPX4on5j0BA9851qtOY7f DtJQ== ARC-Authentication-Results: i=1; mx.google.com; spf=neutral (google.com: 212.227.126.187 is neither permitted nor denied by best guess record for domain of arnd@arndb.de) smtp.mailfrom=arnd@arndb.de Received: from mout.kundenserver.de (mout.kundenserver.de. [212.227.126.187]) by mx.google.com with ESMTPS id p1si6045028wrn.142.2019.07.08.05.52.21 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Jul 2019 05:52:21 -0700 (PDT) Received-SPF: neutral (google.com: 212.227.126.187 is neither permitted nor denied by best guess record for domain of arnd@arndb.de) client-ip=212.227.126.187; Authentication-Results: mx.google.com; spf=neutral (google.com: 212.227.126.187 is neither permitted nor denied by best guess record for domain of arnd@arndb.de) smtp.mailfrom=arnd@arndb.de Received: from threadripper.lan ([149.172.19.189]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.129]) with ESMTPA (Nemesis) id 1MALql-1hd0Lw2Uqh-00Bs63; Mon, 08 Jul 2019 14:52:19 +0200 From: Arnd Bergmann To: Dennis Zhou , Tejun Heo , Christoph Lameter Cc: Arnd Bergmann , Kefeng Wang , Peng Fan , Andrew Morton , Mike Rapoport , Greg Kroah-Hartman , "Dennis Zhou (Facebook)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH] percpu: fix pcpu_page_first_chunk return code handling Date: Mon, 8 Jul 2019 14:52:09 +0200 Message-Id: <20190708125217.3757973-1-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K1:cJtj1haBkBbWRm+C+Iua7rdvkbZLbR4MZWZ6z3vSC1X/PXqtkAs R+qNUxDsVrk6zgmmdUs6UXIxDw//8IMdKBSJyl1ZUQl9wsyHhvL31/QV8xXn9D8roifT7PY GZ1A9E8jTpmXrMwd7rc7egfuxl6cmhOPGYiLqpJKpDSL/DxvxmrJsuTXEe081AhSnUqL2GX Ub4oC7dZySA4sOigUqskA== X-UI-Out-Filterresults: notjunk:1;V03:K0:ITl96BottfQ=:qqxhzos/aOanf3aqBADACV JwgD/BUjtgaC1QokhGuyrwx9DsbxnL44mYL17o/rvkq300Dt+Iyleg1ZQwXxaUQ3vnRZAvEF5 xOEvUpaESSPGruqL33FOixV+UbWXKGDJn6tNBqOxunBZbQ2QQZT64w9L7ANwxAZwXsjrmmmT5 Rl1TvI0bxyEg8Bzub6PXaQL89ZLZsCW9JVrV/ShakwTiJcIusHUcNTuBSXuuNd+QlKHB+3pb7 PtwTXRrNEGANSh0UAi8Gw6HXax3DSOaqZcLy3nweZ2himUOJELhpVMQMPNcTypax5bEKG8TvD PL4QykHTINpFOQo7eu3Oj1CTPXEVazMUBTRjsuOGTR6pbjDRXvBZdxgl2XJRYpyYprEEnVl0t Ub1w5K4+yQG8XlHNCNPKUrtXz3TulnB9Wb7OSU/u4GAWRL7OEvsHHncCBgxyyta4+X3I/aPrn oTa8fnO+i8VLlgUYGmkZ32uv9tMjbNn1rao1HPmzu8QJ86UUbsNgdEg8UDh1iaGf2qNUOkarZ +hmD7nZH/2Y3jNzeO1gdirDawiVUBRztfjcloIbt++CucLtIuZmv3WBOK04ERzeawGNyRWyom HfeJn13r1mqX56Vg8d5IdgOiUSo+0XnvSOo37Iz3A7YZWP4uTCUPhV3nIESaeQd6Ukjf8U2fP Wb4ngytBXr4k5s64ogPVtk/CGed73Ns0xrh0/X2f+PCEQD0HvVVgmKCkD5A2vtFzhTfWSPrkN 4R0t/U9YTMtk/TpTC68ZfJTIJDUhFNxssqnwRA== 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: gcc complains that pcpu_page_first_chunk() might return an uninitialized error code when the loop is never entered: mm/percpu.c: In function 'pcpu_page_first_chunk': mm/percpu.c:2929:9: error: 'rc' may be used uninitialized in this function [-Werror=maybe-uninitialized] Make it return zero like before the cleanup. Fixes: a13e0ad81216 ("percpu: Make pcpu_setup_first_chunk() void function") Signed-off-by: Arnd Bergmann --- mm/percpu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/percpu.c b/mm/percpu.c index 5a918a4b1da0..5b65f753c575 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -2917,6 +2917,7 @@ int __init pcpu_page_first_chunk(size_t reserved_size, ai->reserved_size, ai->dyn_size); pcpu_setup_first_chunk(ai, vm.addr); + rc = 0; goto out_free_ar; enomem: -- 2.20.0