From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id 9C9CDA0096 for ; Mon, 8 Apr 2019 11:47:31 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id C94EB5689; Mon, 8 Apr 2019 11:47:13 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id EE706559A; Mon, 8 Apr 2019 11:47:10 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Apr 2019 02:47:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,324,1549958400"; d="scan'208";a="221512891" Received: from silpixa00399126.ir.intel.com (HELO silpixa00399126.ger.corp.intel.com) ([10.237.222.236]) by orsmga001.jf.intel.com with ESMTP; 08 Apr 2019 02:47:08 -0700 From: Bruce Richardson To: dev@dpdk.org Cc: Bruce Richardson , stable@dpdk.org, zijie.pan@6wind.com, Beilei Xing , Qi Zhang , Rami Rosen Date: Mon, 8 Apr 2019 10:46:40 +0100 Message-Id: <20190408094640.46030-6-bruce.richardson@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190408094640.46030-1-bruce.richardson@intel.com> References: <20190405134511.49066-1-bruce.richardson@intel.com> <20190408094640.46030-1-bruce.richardson@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v3 5/5] net/i40e: fix dereference before check when getting EEPROM X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Content-Type: text/plain; charset="UTF-8" Message-ID: <20190408094640.BYOVyfQ0toB8s5awpBBExxBJiVMU90w9J6ejtLzapaI@z> As flagged by coverity, the "info" structure is being explicitly dereferenced before being checked later for a NULL value. Coverity issue: 277241 Fixes: 98e60c0d43f1 ("net/i40e: add module EEPROM callbacks for i40e") CC: stable@dpdk.org Cc: zijie.pan@6wind.com CC: Beilei Xing CC: Qi Zhang Signed-off-by: Bruce Richardson Acked-by: Rami Rosen --- drivers/net/i40e/i40e_ethdev.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 5b01dc1f0..9305b7ac1 100644 --- a/drivers/net/i40e/i40e_ethdev.c +++ b/drivers/net/i40e/i40e_ethdev.c @@ -11901,16 +11901,17 @@ static int i40e_get_module_eeprom(struct rte_eth_dev *dev, struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); bool is_sfp = false; i40e_status status; - uint8_t *data = info->data; + uint8_t *data; uint32_t value = 0; uint32_t i; - if (!info || !info->length || !data) + if (!info || !info->length || !info->data) return -EINVAL; if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP) is_sfp = true; + data = info->data; for (i = 0; i < info->length; i++) { u32 offset = i + info->offset; u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0; -- 2.20.1