From patchwork Mon Sep 6 02:02:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Zhang X-Patchwork-Id: 98009 X-Patchwork-Delegate: qi.z.zhang@intel.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 196A3A0C4D; Mon, 6 Sep 2021 04:16:50 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 3B37B4111F; Mon, 6 Sep 2021 04:16:48 +0200 (CEST) Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by mails.dpdk.org (Postfix) with ESMTP id 4248741120; Mon, 6 Sep 2021 04:16:46 +0200 (CEST) X-IronPort-AV: E=McAfee;i="6200,9189,10098"; a="280876504" X-IronPort-AV: E=Sophos;i="5.85,271,1624345200"; d="scan'208";a="280876504" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Sep 2021 19:16:45 -0700 X-IronPort-AV: E=Sophos;i="5.85,271,1624345200"; d="scan'208";a="536351273" Received: from unknown (HELO intel-npg-odc-srv03.cd.intel.com) ([10.240.178.145]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Sep 2021 19:16:41 -0700 From: Robin Zhang To: dev@dpdk.org Cc: beilei.xing@intel.com, qi.z.zhang@intel.com, helin.zhang@intel.com, jingjing.wu@intel.com, remy.horton@intel.com, jijiang.liu@intel.com, jing.d.chen@intel.com, heqing.zhu@intel.com, cunming.liang@intel.com, wenzhuo.lu@intel.com, roy.fan.zhang@intel.com, andrey.chilikin@intel.com, echaudro@redhat.com, junfeng.guo@intel.com, stevex.yang@intel.com, Robin Zhang , stable@dpdk.org, Christopher Pau Date: Mon, 6 Sep 2021 02:02:51 +0000 Message-Id: <20210906020258.1291688-12-robinx.zhang@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210906020258.1291688-1-robinx.zhang@intel.com> References: <20210618063851.3694702-1-robinx.zhang@intel.com> <20210906020258.1291688-1-robinx.zhang@intel.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v4 11/18] net/i40e/base: fix potentially uninitialized variables in NVM code X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 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" The status of i40e_read_nvm_word is not checked, so variables set from this function could be used uninitialized. In this case, preserve the existing flow that does not block initialization by initializing these values from the start. Fixes: 8d6c51fcd24b ("i40e/base: get OEM version") Fixes: 2db70574247b ("net/i40e/base: limit PF/VF specific code to that driver only") Cc: stable@dpdk.org Signed-off-by: Christopher Pau Signed-off-by: Robin Zhang --- drivers/net/i40e/base/i40e_adminq.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/i40e/base/i40e_adminq.c b/drivers/net/i40e/base/i40e_adminq.c index eafacbdbec..d27ccde29a 100644 --- a/drivers/net/i40e/base/i40e_adminq.c +++ b/drivers/net/i40e/base/i40e_adminq.c @@ -648,8 +648,10 @@ enum i40e_status_code i40e_init_adminq(struct i40e_hw *hw) { struct i40e_adminq_info *aq = &hw->aq; enum i40e_status_code ret_code; - u16 cfg_ptr, oem_hi, oem_lo; - u16 eetrack_lo, eetrack_hi; + u16 oem_hi = 0, oem_lo = 0; + u16 eetrack_hi = 0; + u16 eetrack_lo = 0; + u16 cfg_ptr = 0; int retry = 0; /* verify input for valid configuration */