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authorJesse Brandeburg <jesse.brandeburg@intel.com>2013-12-14 15:26:45 +0400
committerDavid S. Miller <davem@davemloft.net>2013-12-15 07:59:41 +0400
commit3c325ced6aefa72d43a54e324df7562564c26f91 (patch)
tree40162d132d29d1620e817a4911ee483ea30f8527 /drivers
parenta3314f3d40215349ab2427800c1e10676691389f (diff)
downloadlinux-3c325ced6aefa72d43a54e324df7562564c26f91.tar.xz
i40e: fix null dereference
If the vsi->tx_rings structure is NULL we don't want to panic. Change-Id: Ic694f043701738c434e8ebe0caf0673f4410dc10 Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/intel/i40e/i40e_main.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index be15938ba213..12b0932204ba 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;