From patchwork Fri Mar 22 13:43:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yue Haibing X-Patchwork-Id: 1061205 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44QlJ342njz9sV4 for ; Sat, 23 Mar 2019 00:44:19 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728395AbfCVNoP (ORCPT ); Fri, 22 Mar 2019 09:44:15 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:48826 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728132AbfCVNoO (ORCPT ); Fri, 22 Mar 2019 09:44:14 -0400 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 50B84DA2ABC3549906C6; Fri, 22 Mar 2019 21:44:11 +0800 (CST) Received: from localhost (10.177.31.96) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.408.0; Fri, 22 Mar 2019 21:44:04 +0800 From: Yue Haibing To: , CC: , , , YueHaibing Subject: [PATCH v2] dccp: Fix memleak in __feat_register_sp Date: Fri, 22 Mar 2019 21:43:48 +0800 Message-ID: <20190322134348.15048-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.177.31.96] X-CFilter-Loop: Reflected Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: YueHaibing If dccp_feat_push_change fails, we forget free the mem which is alloced by kmemdup in dccp_feat_clone_sp_val. Reported-by: Hulk Robot Fixes: e8ef967a54f4 ("dccp: Registration routines for changing feature values") Signed-off-by: YueHaibing --- v2: kfree 'val --> 'fval' --- net/dccp/feat.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/net/dccp/feat.c b/net/dccp/feat.c index f227f00..03275b2 100644 --- a/net/dccp/feat.c +++ b/net/dccp/feat.c @@ -738,7 +738,12 @@ static int __feat_register_sp(struct list_head *fn, u8 feat, u8 is_local, if (dccp_feat_clone_sp_val(&fval, sp_val, sp_len)) return -ENOMEM; - return dccp_feat_push_change(fn, feat, is_local, mandatory, &fval); + if (dccp_feat_push_change(fn, feat, is_local, mandatory, &fval)) { + kfree(fval->sp.vec); + return -ENOMEM; + } + + return 0; } /**