diff options
Diffstat (limited to 'net/openvswitch')
| -rw-r--r-- | net/openvswitch/vport-netdev.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c index c42642075685..e7e8490a53d8 100644 --- a/net/openvswitch/vport-netdev.c +++ b/net/openvswitch/vport-netdev.c @@ -83,6 +83,14 @@ struct vport *ovs_netdev_link(struct vport *vport, bool tunnel) } rtnl_lock(); + /* Do not link devices that are not registered to avoid a potential + * race with the NETDEV_UNREGISTER notification in dp_device_event(). + */ + if (vport->dev->reg_state != NETREG_REGISTERED) { + err = -ENODEV; + goto error_put_unlock; + } + err = netdev_master_upper_dev_link(vport->dev, get_dpdev(vport->dp), NULL, NULL, NULL); |