[PATCH net 2/3] net/mlx5: Add null check for flow namespace in esw_set_slave_root_fdb
From: Oskar Ray-Frayssinet <hidden>
Date: 2026-03-26 20:59:39
Also in:
linux-rdma, lkml
Subsystem:
mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Leon Romanovsky, Tariq Toukan, Mark Bloch, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
mlx5_get_flow_namespace() can return NULL if the namespace is not available. Add null checks to prevent potential null pointer dereference when accessing ns->node in both master and slave branches. Signed-off-by: Oskar Ray-Frayssinet <redacted> --- drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 7a9ee36b8dca..63aff6255c02 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c@@ -2821,6 +2821,8 @@ static int esw_set_slave_root_fdb(struct mlx5_core_dev *master, if (master) { ns = mlx5_get_flow_namespace(master, MLX5_FLOW_NAMESPACE_FDB); + if (!ns) + return -EOPNOTSUPP; root = find_root(&ns->node); mutex_lock(&root->chain_lock); MLX5_SET(set_flow_table_root_in, in,
@@ -2833,6 +2835,8 @@ static int esw_set_slave_root_fdb(struct mlx5_core_dev *master, } else { ns = mlx5_get_flow_namespace(slave, MLX5_FLOW_NAMESPACE_FDB); + if (!ns) + return -EOPNOTSUPP; root = find_root(&ns->node); mutex_lock(&root->chain_lock); MLX5_SET(set_flow_table_root_in, in, table_id,
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2.43.0