net/mlx5e: kTLS, Use _safe() iterator in mlx5e_tls_priv_tx_list_cleanup()

Use the list_for_each_entry_safe() macro to prevent dereferencing "obj"
after it has been freed.

Fixes: c4dfe704f53f ("net/mlx5e: kTLS, Recycle objects of device-offloaded TLS TX connections")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
index 0aef695..3a1f76e 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
@@ -246,7 +246,7 @@ static void mlx5e_tls_priv_tx_cleanup(struct mlx5e_ktls_offload_context_tx *priv
 static void mlx5e_tls_priv_tx_list_cleanup(struct mlx5_core_dev *mdev,
                                           struct list_head *list, int size)
 {
-       struct mlx5e_ktls_offload_context_tx *obj;
+       struct mlx5e_ktls_offload_context_tx *obj, *n;
        struct mlx5e_async_ctx *bulk_async;
        int i;
 
@@ -255,7 +255,7 @@ static void mlx5e_tls_priv_tx_list_cleanup(struct mlx5_core_dev *mdev,
                return;
 
        i = 0;
-       list_for_each_entry(obj, list, list_node) {
+       list_for_each_entry_safe(obj, n, list, list_node) {
                mlx5e_tls_priv_tx_cleanup(obj, &bulk_async[i]);
                i++;
        }