From patchwork Thu Sep 10 00:04:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Tony Nguyen X-Patchwork-Id: 1361135 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=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Bn2b10gSqz9sTd for ; Thu, 10 Sep 2020 12:17:17 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730730AbgIJCRO (ORCPT ); Wed, 9 Sep 2020 22:17:14 -0400 Received: from mga14.intel.com ([192.55.52.115]:25575 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730553AbgIJCO7 (ORCPT ); Wed, 9 Sep 2020 22:14:59 -0400 IronPort-SDR: ew0IfTQKCOMzVC76Czq+t3HMl9W3jGtcz3nKDgM7W8TQ3XV2hqQJBc8KW68lWnRtQpXGUuLFLz mN3Qq7lGc8Pg== X-IronPort-AV: E=McAfee;i="6000,8403,9739"; a="157721714" X-IronPort-AV: E=Sophos;i="5.76,411,1592895600"; d="scan'208";a="157721714" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Sep 2020 17:04:22 -0700 IronPort-SDR: qWbUNeJ5wR8Lb0SiPyhxkohsHklI7F84SOTjVKSt/7D5FqS9diqPVhdLGdKpVmOtlE4UOy5cUb S1c7ru0UfB2A== X-IronPort-AV: E=Sophos;i="5.76,411,1592895600"; d="scan'208";a="341733830" Received: from jtkirshe-desk1.jf.intel.com ([134.134.177.86]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Sep 2020 17:04:22 -0700 From: Tony Nguyen To: davem@davemloft.net Cc: Stefan Assmann , netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, jeffrey.t.kirsher@intel.com, anthony.l.nguyen@intel.com, Jakub Kicinski , Aaron Brown Subject: [net 1/4] i40e: fix return of uninitialized aq_ret in i40e_set_vsi_promisc Date: Wed, 9 Sep 2020 17:04:08 -0700 Message-Id: <20200910000411.2658780-2-anthony.l.nguyen@intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200910000411.2658780-1-anthony.l.nguyen@intel.com> References: <20200910000411.2658780-1-anthony.l.nguyen@intel.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Stefan Assmann drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c: In function ‘i40e_set_vsi_promisc’: drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c:1176:14: error: ‘aq_ret’ may be used uninitialized in this function [-Werror=maybe-uninitialized] i40e_status aq_ret; In case the code inside the if statement and the for loop does not get executed aq_ret will be uninitialized when the variable gets returned at the end of the function. Avoid this by changing num_vlans from int to u16, so aq_ret always gets set. Making this change in additional places as num_vlans should never be negative. Fixes: 37d318d7805f ("i40e: Remove scheduling while atomic possibility") Signed-off-by: Stefan Assmann Acked-by: Jakub Kicinski Tested-by: Aaron Brown Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index 8e133d6545bd..5defcb777e92 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -1115,7 +1115,7 @@ static int i40e_quiesce_vf_pci(struct i40e_vf *vf) static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi) { struct i40e_mac_filter *f; - int num_vlans = 0, bkt; + u16 num_vlans = 0, bkt; hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) { if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID) @@ -1134,8 +1134,8 @@ static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi) * * Called to get number of VLANs and VLAN list present in mac_filter_hash. **/ -static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, int *num_vlans, - s16 **vlan_list) +static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans, + s16 **vlan_list) { struct i40e_mac_filter *f; int i = 0; @@ -1169,7 +1169,7 @@ static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, int *num_vlans, **/ static i40e_status i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable, - bool unicast_enable, s16 *vl, int num_vlans) + bool unicast_enable, s16 *vl, u16 num_vlans) { struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; @@ -1258,7 +1258,7 @@ static i40e_status i40e_config_vf_promiscuous_mode(struct i40e_vf *vf, i40e_status aq_ret = I40E_SUCCESS; struct i40e_pf *pf = vf->pf; struct i40e_vsi *vsi; - int num_vlans; + u16 num_vlans; s16 *vl; vsi = i40e_find_vsi_from_id(pf, vsi_id);