diff options
| author | Huy Nguyen <huyn@mellanox.com> | 2018-08-15 19:08:48 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2018-09-06 03:08:33 +0300 |
| commit | 47bc94b82291e007da61ee1b3d18c77871f3e158 (patch) | |
| tree | c82f421f7b4c0cbff185923bf032af2d034c4176 /drivers/net/ethernet | |
| parent | df7ddb2396cd162e64aaff9401be05e31e438961 (diff) | |
| download | linux-47bc94b82291e007da61ee1b3d18c77871f3e158.tar.xz | |
net/mlx5: Check for error in mlx5_attach_interface
Currently, mlx5_attach_interface does not check for error
after calling intf->attach or intf->add. When these two calls
fails, the client is not initialized and will cause issues such as
kernel panic on invalid address in the teardown path (mlx5_detach_interface)
Fixes: 737a234bb638 ("net/mlx5: Introduce attach/detach to interface API")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/dev.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/dev.c index ada723bd91b6..37ba7c78859d 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/dev.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/dev.c @@ -132,11 +132,11 @@ void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv) delayed_event_start(priv); dev_ctx->context = intf->add(dev); - set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); - if (intf->attach) - set_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state); - if (dev_ctx->context) { + set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); + if (intf->attach) + set_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state); + spin_lock_irq(&priv->ctx_lock); list_add_tail(&dev_ctx->list, &priv->ctx_list); @@ -211,12 +211,17 @@ static void mlx5_attach_interface(struct mlx5_interface *intf, struct mlx5_priv if (intf->attach) { if (test_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state)) goto out; - intf->attach(dev, dev_ctx->context); + if (intf->attach(dev, dev_ctx->context)) + goto out; + set_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state); } else { if (test_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state)) goto out; dev_ctx->context = intf->add(dev); + if (!dev_ctx->context) + goto out; + set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); } |