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 58589C43381 for ; Fri, 22 Mar 2019 03:07:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2BD63218B0 for ; Fri, 22 Mar 2019 03:07:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727675AbfCVDHR (ORCPT ); Thu, 21 Mar 2019 23:07:17 -0400 Received: from out1.zte.com.cn ([202.103.147.172]:58104 "EHLO mxct.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727576AbfCVDHQ (ORCPT ); Thu, 21 Mar 2019 23:07:16 -0400 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id EF639D0898BEB91D10D3; Fri, 22 Mar 2019 11:07:09 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x2M35lS2078047; Fri, 22 Mar 2019 11:05:47 +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 2019032211062412-5922971 ; Fri, 22 Mar 2019 11:06:24 +0800 From: Wen Yang To: linux-kernel@vger.kernel.org Cc: wang.yi59@zte.com.cn, Wen Yang , Scott Wood , Kumar Gala , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , linuxppc-dev@lists.ozlabs.org Subject: [PATCH 2/5] powerpc/83xx: fix possible object reference leak Date: Fri, 22 Mar 2019 11:05:52 +0800 Message-Id: <1553223955-7350-2-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1553223955-7350-1-git-send-email-wen.yang99@zte.com.cn> References: <1553223955-7350-1-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 2019-03-22 11:06:24, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-03-22 11:05:32, Serialize complete at 2019-03-22 11:05:32 X-MAIL: mse01.zte.com.cn x2M35lS2078047 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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: ./arch/powerpc/platforms/83xx/km83xx.c:68:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 59, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Scott Wood Cc: Kumar Gala Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org --- arch/powerpc/platforms/83xx/km83xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/platforms/83xx/km83xx.c b/arch/powerpc/platforms/83xx/km83xx.c index d8642a4..11eea7c 100644 --- a/arch/powerpc/platforms/83xx/km83xx.c +++ b/arch/powerpc/platforms/83xx/km83xx.c @@ -65,6 +65,7 @@ static void quirk_mpc8360e_qe_enet10(void) ret = of_address_to_resource(np_par, 0, &res); if (ret) { pr_warn("%s couldn;t map par_io registers\n", __func__); + of_node_put(np_par); return; } -- 2.9.5