[PATCH net 3/3] net/mlx5: Add null check for flow namespace in mlx5_cmd_set_slave_root_fdb
From: Oskar Ray-Frayssinet <hidden>
Date: 2026-03-26 20:59:41
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 a null check to prevent potential null pointer dereference when accessing ns->node. Signed-off-by: Oskar Ray-Frayssinet <redacted> --- drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
index c348ee62cd3a..c52d8ca6aa0b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c@@ -186,6 +186,8 @@ static int mlx5_cmd_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); MLX5_SET(set_flow_table_root_in, in, table_id, root->root_ft->id);
--
2.43.0