[PATCH v3 1/1] net/mlx5: Fix null-ptr-deref in mlx5_create_{inner_,}ttc_table()

[Henry Martin <bsdhenrymartin@gmail.com>]

Add NULL check for mlx5_get_flow_namespace() returns in
mlx5_create_inner_ttc_table() and mlx5_create_ttc_table() to prevent
NULL pointer dereference.

Fixes: 137f3d50ad2a ("net/mlx5: Support matching on l4_type for ttc_table")
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
---
V2 -> V3: No functional changes, just gathering the patches in a series.
V1 -> V2: Add a empty line after the return statement.

 drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c
index eb3bd9c7f66e..18cc6960a5c1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c
@@ -655,6 +655,9 @@ struct mlx5_ttc_table *mlx5_create_inner_ttc_table(struct mlx5_core_dev *dev,
 	}
 
 	ns = mlx5_get_flow_namespace(dev, params->ns_type);
+	if (!ns)
+		return ERR_PTR(-EOPNOTSUPP);
+
 	groups = use_l4_type ? &inner_ttc_groups[TTC_GROUPS_USE_L4_TYPE] :
 			       &inner_ttc_groups[TTC_GROUPS_DEFAULT];
 
@@ -728,6 +731,9 @@ struct mlx5_ttc_table *mlx5_create_ttc_table(struct mlx5_core_dev *dev,
 	}
 
 	ns = mlx5_get_flow_namespace(dev, params->ns_type);
+	if (!ns)
+		return ERR_PTR(-EOPNOTSUPP);
+
 	groups = use_l4_type ? &ttc_groups[TTC_GROUPS_USE_L4_TYPE] :
 			       &ttc_groups[TTC_GROUPS_DEFAULT];
 
-- 
2.34.1