From: Wentao Liang Date: Sat, 24 May 2025 16:34:25 +0000 (+0800) Subject: net/mlx5: Add error handling in mlx5_query_nic_vport_node_guid() X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=c6bb8a21cdad8c975a3a646b9e5c8df01ad29783;p=linux-2.6-microblaze.git net/mlx5: Add error handling in mlx5_query_nic_vport_node_guid() The function mlx5_query_nic_vport_node_guid() calls the function mlx5_query_nic_vport_context() but does not check its return value. A proper implementation can be found in mlx5_nic_vport_query_local_lb(). Add error handling for mlx5_query_nic_vport_context(). If it fails, free the out buffer via kvfree() and return error code. Fixes: 9efa75254593 ("net/mlx5_core: Introduce access functions to query vport RoCE fields") Cc: stable@vger.kernel.org # v4.5 Signed-off-by: Wentao Liang Reviewed-by: Tariq Toukan Link: https://patch.msgid.link/20250524163425.1695-1-vulab@iscas.ac.cn Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/mellanox/mlx5/core/vport.c b/drivers/net/ethernet/mellanox/mlx5/core/vport.c index a3c57bb8b521..da5c24fc7b30 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/vport.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/vport.c @@ -465,19 +465,22 @@ int mlx5_query_nic_vport_node_guid(struct mlx5_core_dev *mdev, u64 *node_guid) { u32 *out; int outlen = MLX5_ST_SZ_BYTES(query_nic_vport_context_out); + int err; out = kvzalloc(outlen, GFP_KERNEL); if (!out) return -ENOMEM; - mlx5_query_nic_vport_context(mdev, 0, out); + err = mlx5_query_nic_vport_context(mdev, 0, out); + if (err) + goto out; *node_guid = MLX5_GET64(query_nic_vport_context_out, out, nic_vport_context.node_guid); - +out: kvfree(out); - return 0; + return err; } EXPORT_SYMBOL_GPL(mlx5_query_nic_vport_node_guid);