[dpdk-stable] [PATCH] net/i40e: fix dereferencing null pointer

[Kuba Kozak]

Add check if o_vlan_mask and i_vlan_mask are
not a NULL pointer.

Coverity issue: 143448
Coverity issue: 143449
Fixes: d37705068ee8 ("net/i40e: parse QinQ pattern")
Cc: stable at dpdk.org

Signed-off-by: Kuba Kozak <kubax.kozak at intel.com>
---
 drivers/net/i40e/i40e_flow.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
index 95af701..b92719a 100644
--- a/drivers/net/i40e/i40e_flow.c
+++ b/drivers/net/i40e/i40e_flow.c
@@ -3719,8 +3719,10 @@ i40e_flow_parse_qinq_pattern(__rte_unused struct rte_eth_dev *dev,
 	}
 
 	/* Get filter specification */
-	if ((o_vlan_mask->tci == rte_cpu_to_be_16(I40E_TCI_MASK)) &&
-	    (i_vlan_mask->tci == rte_cpu_to_be_16(I40E_TCI_MASK))) {
+	if ((o_vlan_mask != NULL) && (o_vlan_mask->tci ==
+			rte_cpu_to_be_16(I40E_TCI_MASK)) &&
+			(i_vlan_mask != NULL) &&
+			(i_vlan_mask->tci == rte_cpu_to_be_16(I40E_TCI_MASK))) {
 		filter->outer_vlan = rte_be_to_cpu_16(o_vlan_spec->tci)
 			& I40E_TCI_MASK;
 		filter->inner_vlan = rte_be_to_cpu_16(i_vlan_spec->tci)
-- 
2.7.4