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net/mlx5: Add error handling in mlx5_query_nic_vport_node_guid()

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commit c6bb8a21cdad8c975a3a646b9e5c8df01ad29783 upstream.

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: 9efa752545 ("net/mlx5_core: Introduce access functions to query vport RoCE fields")
Cc: stable@vger.kernel.org # v4.5
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250524163425.1695-1-vulab@iscas.ac.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wentao Liang
2025-05-25 00:34:25 +08:00
committed by Greg Kroah-Hartman
parent 477e4319c3
commit 782b3aff67
1 changed files with 6 additions and 3 deletions
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9
drivers/net/ethernet/mellanox/mlx5/core/vport.c
View File

@@ -444,19 +444,22 @@ 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);