ixgbe: fix potential null dereference

This patch adds a default case which goes to the next loop iteration
in the case where p is not set, preventing p from being dereferenced.

Signed-off-by: Josh Hay <joshua.a.hay@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index 216203ece6ed..bafd141193af 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -1040,6 +1040,9 @@ static void ixgbe_get_ethtool_stats(struct net_device *netdev,
                         p = (char *) adapter +
                                         ixgbe_gstrings_stats[i].stat_offset;
                         break;
+                default:
+                        data[i] = 0;
+                        continue;
                 }
 
                 data[i] = (ixgbe_gstrings_stats[i].sizeof_stat ==