From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next 01/15] i40e: fix null dereference Date: Thu, 12 Dec 2013 04:40:37 -0800 Message-ID: <1386852051-27907-2-git-send-email-jeffrey.t.kirsher@intel.com> References: <1386852051-27907-1-git-send-email-jeffrey.t.kirsher@intel.com> Cc: Jesse Brandeburg , netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com, Jeff Kirsher To: davem@davemloft.net Return-path: Received: from mga09.intel.com ([134.134.136.24]:26106 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751567Ab3LLMk7 (ORCPT ); Thu, 12 Dec 2013 07:40:59 -0500 In-Reply-To: <1386852051-27907-1-git-send-email-jeffrey.t.kirsher@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Jesse Brandeburg If the vsi->tx_rings structure is NULL we don't want to panic. Change-Id: Ic694f043701738c434e8ebe0caf0673f4410dc10 Signed-off-by: Jesse Brandeburg Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index a6291e2..1ef311a 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -354,6 +354,9 @@ static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct( struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi); int i; + if (!vsi->tx_rings) + return stats; + rcu_read_lock(); for (i = 0; i < vsi->num_queue_pairs; i++) { struct i40e_ring *tx_ring, *rx_ring; -- 1.8.3.1