* [PATCH v1] net/mlx5: Fix null-ptr-deref in mlx5e_tc_nic_create_miss_table()
@ 2025-04-05 10:20 Henry Martin
0 siblings, 0 replies; only message in thread
From: Henry Martin @ 2025-04-05 10:20 UTC (permalink / raw)
To: saeedm, tariqt
Cc: leon, andrew+netdev, davem, edumazet, kuba, pabeni, netdev,
linux-rdma, linux-kernel, Henry Martin
Add NULL check for mlx5_get_flow_namespace() returns in
mlx5e_tc_nic_create_miss_table() to prevent NULL pointer dereference.
Fixes: 66cb64e292d2 ("net/mlx5e: TC NIC mode, fix tc chains miss table")
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 9ba99609999f..538c33c353ad 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -5216,6 +5216,8 @@ static int mlx5e_tc_nic_create_miss_table(struct mlx5e_priv *priv)
ft_attr.level = MLX5E_TC_MISS_LEVEL;
ft_attr.prio = 0;
ns = mlx5_get_flow_namespace(priv->mdev, MLX5_FLOW_NAMESPACE_KERNEL);
+ if (!ns)
+ return -EOPNOTSUPP;
*ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
if (IS_ERR(*ft)) {
--
2.34.1
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