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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, 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 606BCC10F06 for ; Mon, 1 Apr 2019 01:38:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 382BC21873 for ; Mon, 1 Apr 2019 01:38:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731828AbfDABir (ORCPT ); Sun, 31 Mar 2019 21:38:47 -0400 Received: from mxhk.zte.com.cn ([63.217.80.70]:42112 "EHLO mxhk.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731711AbfDABi1 (ORCPT ); Sun, 31 Mar 2019 21:38:27 -0400 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id CB367F8CB696586F2B91; Mon, 1 Apr 2019 09:38:24 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x311cKjX061270; Mon, 1 Apr 2019 09:38:20 +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 2019040109382316-7035272 ; Mon, 1 Apr 2019 09:38:23 +0800 From: Wen Yang To: linux-kernel@vger.kernel.org Cc: wang.yi59@zte.com.cn, Wen Yang , "Rafael J. Wysocki" , Viresh Kumar , linuxppc-dev@lists.ozlabs.org, linux-pm@vger.kernel.org Subject: [PATCH 5/7] cpufreq/pasemi: fix possible object reference leak Date: Mon, 1 Apr 2019 09:37:52 +0800 Message-Id: <1554082674-2049-6-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 09:38:23, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-04-01 09:38:20, Serialize complete at 2019-04-01 09:38:20 X-MAIL: mse01.zte.com.cn x311cKjX061270 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The call to of_get_cpu_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/pasemi-cpufreq.c:212:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 147, but without a corresponding object release within this function. ./drivers/cpufreq/pasemi-cpufreq.c:220:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 147, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: "Rafael J. Wysocki" Cc: Viresh Kumar Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/cpufreq/pasemi-cpufreq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c index 75dfbd2..c7710c1 100644 --- a/drivers/cpufreq/pasemi-cpufreq.c +++ b/drivers/cpufreq/pasemi-cpufreq.c @@ -146,6 +146,7 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy) cpu = of_get_cpu_node(policy->cpu, NULL); + of_node_put(cpu); if (!cpu) goto out; -- 2.9.5 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 63702C43381 for ; Mon, 1 Apr 2019 01:40:15 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A705A20872 for ; Mon, 1 Apr 2019 01:40:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A705A20872 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=zte.com.cn Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 44XZlv5fSyzDqMP for ; Mon, 1 Apr 2019 12:40:11 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=zte.com.cn (client-ip=63.217.80.70; helo=mxhk.zte.com.cn; envelope-from=wen.yang99@zte.com.cn; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=zte.com.cn Received: from mxhk.zte.com.cn (mxhk.zte.com.cn [63.217.80.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 44XZk127LWzDqMH for ; Mon, 1 Apr 2019 12:38:28 +1100 (AEDT) Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id CB367F8CB696586F2B91; Mon, 1 Apr 2019 09:38:24 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x311cKjX061270; Mon, 1 Apr 2019 09:38:20 +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 2019040109382316-7035272 ; Mon, 1 Apr 2019 09:38:23 +0800 From: Wen Yang To: linux-kernel@vger.kernel.org Subject: [PATCH 5/7] cpufreq/pasemi: fix possible object reference leak Date: Mon, 1 Apr 2019 09:37:52 +0800 Message-Id: <1554082674-2049-6-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 09:38:23, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-04-01 09:38:20, Serialize complete at 2019-04-01 09:38:20 X-MAIL: mse01.zte.com.cn x311cKjX061270 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wang.yi59@zte.com.cn, linux-pm@vger.kernel.org, Viresh Kumar , "Rafael J. Wysocki" , linuxppc-dev@lists.ozlabs.org, Wen Yang Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" The call to of_get_cpu_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/pasemi-cpufreq.c:212:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 147, but without a corresponding object release within this function. ./drivers/cpufreq/pasemi-cpufreq.c:220:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 147, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: "Rafael J. Wysocki" Cc: Viresh Kumar Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/cpufreq/pasemi-cpufreq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c index 75dfbd2..c7710c1 100644 --- a/drivers/cpufreq/pasemi-cpufreq.c +++ b/drivers/cpufreq/pasemi-cpufreq.c @@ -146,6 +146,7 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy) cpu = of_get_cpu_node(policy->cpu, NULL); + of_node_put(cpu); if (!cpu) goto out; -- 2.9.5