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=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,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 97E9CC072B1 for ; Thu, 30 May 2019 03:53:10 +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 1F86124E13 for ; Thu, 30 May 2019 03:53:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="jCf721i2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1F86124E13 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org 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 45Dtw33kcKzDqNL for ; Thu, 30 May 2019 13:53:07 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=linuxfoundation.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=gregkh@linuxfoundation.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="jCf721i2"; dkim-atps=neutral Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (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 45DtCX5yJGzDqP1 for ; Thu, 30 May 2019 13:21:28 +1000 (AEST) Received: from localhost (ip67-88-213-2.z213-88-67.customer.algx.net [67.88.213.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2707B249FC; Thu, 30 May 2019 03:21:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559186487; bh=VJkP1uPKZV04dqxxoe5F7J+u19z62vXuWKURf8fiC+Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jCf721i2BKK+2IUcSdSjPwhIe2kC1l/iX7HtkbeqyI6JazOCH66GgZydEFNG3zUiF Jf4yyDh1AFEUjA08jaJRraJViyyBd6gkGlaH5Kh6VVTQh+feMs8oNR4OomoCD4fUDh GZX86/neXbBipiV0MT/Rq2N/Ln3QVBEuZ2Ehca34= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Subject: [PATCH 4.9 087/128] cpufreq: pmac32: fix possible object reference leak Date: Wed, 29 May 2019 20:06:59 -0700 Message-Id: <20190530030450.494881621@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190530030432.977908967@linuxfoundation.org> References: <20190530030432.977908967@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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: Sasha Levin , linux-pm@vger.kernel.org, Greg Kroah-Hartman , "Rafael J. Wysocki" , stable@vger.kernel.org, Viresh Kumar , Paul Mackerras , linuxppc-dev@lists.ozlabs.org, Wen Yang Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" [ Upstream commit 8d10dc28a9ea6e8c02e825dab28699f3c72b02d9 ] The call to of_find_node_by_name 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/pmac32-cpufreq.c:557:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 552, but without a corresponding object release within this function. ./drivers/cpufreq/pmac32-cpufreq.c:569:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 552, but without a corresponding object release within this function. ./drivers/cpufreq/pmac32-cpufreq.c:598:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 587, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: "Rafael J. Wysocki" Cc: Viresh Kumar Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: linux-pm@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Viresh Kumar Signed-off-by: Sasha Levin --- drivers/cpufreq/pmac32-cpufreq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/cpufreq/pmac32-cpufreq.c b/drivers/cpufreq/pmac32-cpufreq.c index ff44016ea0312..641f8021855a7 100644 --- a/drivers/cpufreq/pmac32-cpufreq.c +++ b/drivers/cpufreq/pmac32-cpufreq.c @@ -551,6 +551,7 @@ static int pmac_cpufreq_init_7447A(struct device_node *cpunode) volt_gpio_np = of_find_node_by_name(NULL, "cpu-vcore-select"); if (volt_gpio_np) voltage_gpio = read_gpio(volt_gpio_np); + of_node_put(volt_gpio_np); if (!voltage_gpio){ pr_err("missing cpu-vcore-select gpio\n"); return 1; @@ -587,6 +588,7 @@ static int pmac_cpufreq_init_750FX(struct device_node *cpunode) if (volt_gpio_np) voltage_gpio = read_gpio(volt_gpio_np); + of_node_put(volt_gpio_np); pvr = mfspr(SPRN_PVR); has_cpu_l2lve = !((pvr & 0xf00) == 0x100); -- 2.20.1