From patchwork Mon Apr 1 01:37:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10878927 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A85E41805 for ; Mon, 1 Apr 2019 01:38:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9002E285C7 for ; Mon, 1 Apr 2019 01:38:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 83F75287D2; Mon, 1 Apr 2019 01:38:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2532B285C7 for ; Mon, 1 Apr 2019 01:38:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=XwwBV9eU0FC1F6b2hgs3mqQWlX5T/Mp8r/BjiXo0PrE=; b=YybNYqFtbfefWhiaq5RTZMmPvo b5BoGYpclaU+ykufsjDcl4ccDmAbI5dEmZcawUVKmyg73pJg5nHOue5dcdyJBLdOosaFoXLa5TBPD 860pk8a0cq0K6H7KEnh4EhEoTsZAjk8A1yDaAWvIwCAdgMc6EIl1Giqrkz8KkhcaglatPlQMTGbje MiCdGnpI0ROn4GQDgjsv4xH04o6IArestQlrj9dSTwQ9rX6rWOxX6WDC7Urk+mCyGn4iQJOEGhLS3 ZVy5l+4wlRdrnso/7/38yd1Eh2CeWtveOvFn9QGlmInQRTUgP1qpA/fxEF+SSgHbYbLK3uCRxqy3U /ylqTCBQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hAluL-0003lG-Df; Mon, 01 Apr 2019 01:38:41 +0000 Received: from out1.zte.com.cn ([202.103.147.172] helo=mxct.zte.com.cn) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hAluA-0003dV-ST for linux-arm-kernel@lists.infradead.org; Mon, 01 Apr 2019 01:38:33 +0000 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 6A67C746CAE50819042B; Mon, 1 Apr 2019 09:38:18 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x311cDsO061195; Mon, 1 Apr 2019 09:38:13 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019040109381645-7035249 ; Mon, 1 Apr 2019 09:38:16 +0800 From: Wen Yang To: linux-kernel@vger.kernel.org Subject: [PATCH 1/7] cpufreq: ap806: fix possible object reference leak Date: Mon, 1 Apr 2019 09:37:48 +0800 Message-Id: <1554082674-2049-2-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1554082674-2049-1-git-send-email-wen.yang99@zte.com.cn> References: <1554082674-2049-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-04-01 09:38:16, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-04-01 09:38:13, Serialize complete at 2019-04-01 09:38:13 X-MAIL: mse01.zte.com.cn x311cDsO061195 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190331_183831_083061_750416B9 X-CRM114-Status: GOOD ( 11.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wang.yi59@zte.com.cn, Andrew Lunn , Jason Cooper , linux-pm@vger.kernel.org, Viresh Kumar , Gregory Clement , "Rafael J. Wysocki" , Wen Yang , linux-arm-kernel@lists.infradead.org, Sebastian Hesselbarth MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_find_compatible_node returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./drivers/cpufreq/armada-8k-cpufreq.c:187:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 130, but without a corresponding object release within this function. ./drivers/cpufreq/armada-8k-cpufreq.c:191:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 130, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Jason Cooper Cc: Andrew Lunn Cc: Gregory Clement Cc: Sebastian Hesselbarth Cc: "Rafael J. Wysocki" Cc: Viresh Kumar Cc: linux-arm-kernel@lists.infradead.org Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/cpufreq/armada-8k-cpufreq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/cpufreq/armada-8k-cpufreq.c b/drivers/cpufreq/armada-8k-cpufreq.c index b3f4bd6..988ebc3 100644 --- a/drivers/cpufreq/armada-8k-cpufreq.c +++ b/drivers/cpufreq/armada-8k-cpufreq.c @@ -132,6 +132,7 @@ static int __init armada_8k_cpufreq_init(void) of_node_put(node); return -ENODEV; } + of_node_put(node); nb_cpus = num_possible_cpus(); freq_tables = kcalloc(nb_cpus, sizeof(*freq_tables), GFP_KERNEL);