net/e1000: fix null pointer check

There are several func calls to rte_zmalloc() which don't have null
pointer check for the return value. It fixes that by adding null
pointer check.

Fixes: 22bb13410cb2 ("net/igb: create consistent filter")
Cc: stable@dpdk.org
Signed-off-by: Yong Wang <wang.yong19@zte.com.cn>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

diff --git a/drivers/net/e1000/igb_flow.c b/drivers/net/e1000/igb_flow.c
index d98bdc8..a142759 100644 (file)
--- a/drivers/net/e1000/igb_flow.c
+++ b/drivers/net/e1000/igb_flow.c
@@ -1413,6 +1413,11 @@ igb_flow_create(struct rte_eth_dev *dev,
                if (!ret) {
                        ntuple_filter_ptr = rte_zmalloc("igb_ntuple_filter",
                                sizeof(struct igb_ntuple_filter_ele), 0);
+                       if (!ntuple_filter_ptr) {
+                               PMD_DRV_LOG(ERR, "failed to allocate memory");
+                               goto out;
+                       }
+
                        rte_memcpy(&ntuple_filter_ptr->filter_info,
                                &ntuple_filter,
                                sizeof(struct rte_eth_ntuple_filter));
@@ -1435,6 +1440,11 @@ igb_flow_create(struct rte_eth_dev *dev,
                        ethertype_filter_ptr = rte_zmalloc(
                                "igb_ethertype_filter",
                                sizeof(struct igb_ethertype_filter_ele), 0);
+                       if (!ethertype_filter_ptr) {
+                               PMD_DRV_LOG(ERR, "failed to allocate memory");
+                               goto out;
+                       }
+
                        rte_memcpy(&ethertype_filter_ptr->filter_info,
                                &ethertype_filter,
                                sizeof(struct rte_eth_ethertype_filter));
@@ -1455,6 +1465,11 @@ igb_flow_create(struct rte_eth_dev *dev,
                if (!ret) {
                        syn_filter_ptr = rte_zmalloc("igb_syn_filter",
                                sizeof(struct igb_eth_syn_filter_ele), 0);
+                       if (!syn_filter_ptr) {
+                               PMD_DRV_LOG(ERR, "failed to allocate memory");
+                               goto out;
+                       }
+
                        rte_memcpy(&syn_filter_ptr->filter_info,
                                &syn_filter,
                                sizeof(struct rte_eth_syn_filter));
@@ -1476,6 +1491,11 @@ igb_flow_create(struct rte_eth_dev *dev,
                if (!ret) {
                        flex_filter_ptr = rte_zmalloc("igb_flex_filter",
                                sizeof(struct igb_flex_filter_ele), 0);
+                       if (!flex_filter_ptr) {
+                               PMD_DRV_LOG(ERR, "failed to allocate memory");
+                               goto out;
+                       }
+
                        rte_memcpy(&flex_filter_ptr->filter_info,
                                &flex_filter,
                                sizeof(struct rte_eth_flex_filter));