From patchwork Wed Oct 19 09:57:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: shaozhengchao X-Patchwork-Id: 13011804 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 174CEC43217 for ; Wed, 19 Oct 2022 13:53:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233749AbiJSNxZ (ORCPT ); Wed, 19 Oct 2022 09:53:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231302AbiJSNw4 (ORCPT ); Wed, 19 Oct 2022 09:52:56 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 40634193EFA for ; Wed, 19 Oct 2022 06:36:28 -0700 (PDT) Received: from dggpeml500026.china.huawei.com (unknown [172.30.72.57]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4Msm734Zf2z1P6hj; Wed, 19 Oct 2022 17:45:19 +0800 (CST) Received: from huawei.com (10.175.101.6) by dggpeml500026.china.huawei.com (7.185.36.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 19 Oct 2022 17:50:02 +0800 From: Zhengchao Shao To: , , , , CC: , , , , , , , , , Subject: [PATCH net,v2 2/4] net: hinic: fix memory leak when reading function table Date: Wed, 19 Oct 2022 17:57:52 +0800 Message-ID: <20221019095754.189119-3-shaozhengchao@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221019095754.189119-1-shaozhengchao@huawei.com> References: <20221019095754.189119-1-shaozhengchao@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpeml500026.china.huawei.com (7.185.36.106) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org When the input parameter idx meets the expected case option in hinic_dbg_get_func_table(), read_data is not released. Fix it. Fixes: 5215e16244ee ("hinic: add support to query function table") Signed-off-by: Zhengchao Shao --- .../net/ethernet/huawei/hinic/hinic_debugfs.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c index 19eb839177ec..061952c6c21a 100644 --- a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c +++ b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c @@ -85,6 +85,7 @@ static int hinic_dbg_get_func_table(struct hinic_dev *nic_dev, int idx) struct tag_sml_funcfg_tbl *funcfg_table_elem; struct hinic_cmd_lt_rd *read_data; u16 out_size = sizeof(*read_data); + int ret = ~0; int err; read_data = kzalloc(sizeof(*read_data), GFP_KERNEL); @@ -111,20 +112,25 @@ static int hinic_dbg_get_func_table(struct hinic_dev *nic_dev, int idx) switch (idx) { case VALID: - return funcfg_table_elem->dw0.bs.valid; + ret = funcfg_table_elem->dw0.bs.valid; + break; case RX_MODE: - return funcfg_table_elem->dw0.bs.nic_rx_mode; + ret = funcfg_table_elem->dw0.bs.nic_rx_mode; + break; case MTU: - return funcfg_table_elem->dw1.bs.mtu; + ret = funcfg_table_elem->dw1.bs.mtu; + break; case RQ_DEPTH: - return funcfg_table_elem->dw13.bs.cfg_rq_depth; + ret = funcfg_table_elem->dw13.bs.cfg_rq_depth; + break; case QUEUE_NUM: - return funcfg_table_elem->dw13.bs.cfg_q_num; + ret = funcfg_table_elem->dw13.bs.cfg_q_num; + break; } kfree(read_data); - return ~0; + return ret; } static ssize_t hinic_dbg_cmd_read(struct file *filp, char __user *buffer, size_t count,