net/mlx5: fix crash on close after failed start

If mlx5_rxq_start() failed and rxq_ctrl was not initialized,
mlx5_rxq_obj_verify() would segfault in an attempt to dereference it.
Add a check that rxq_ctrl is not NULL before accessing its members.

Fixes: 09c2555303be ("net/mlx5: support shared Rx queue")
Signed-off-by: Dmitry Kozlyuk <dkozlyuk@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>

diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 47dc24793b4e291dae00148d928ec392bcb56f04..191f1e483f5928ea3946c81ae03ffbfa095868ce 100644 (file)
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -1271,6 +1271,8 @@ mlx5_rxq_obj_verify(struct rte_eth_dev *dev)
        struct mlx5_rxq_obj *rxq_obj;
 
        LIST_FOREACH(rxq_obj, &priv->rxqsobj, next) {
+               if (rxq_obj->rxq_ctrl == NULL)
+                       continue;
                if (rxq_obj->rxq_ctrl->rxq.shared &&
                    !LIST_EMPTY(&rxq_obj->rxq_ctrl->owners))
                        continue;