From: Lance Richardson <[email protected]> Date: Tue, 9 Aug 2016 15:29:42 -0400
> When executing the script included below, the netns delete operation > hangs with the following message (repeated at 10 second intervals): > > kernel:unregister_netdevice: waiting for lo to become free. Usage count = 1 > > This occurs because a reference to the lo interface in the "secure" netns > is still held by a dst entry in the xfrm bundle cache in the init netns. > > Address this problem by garbage collecting the tunnel netns flow cache > when a cross-namespace vti interface receives a NETDEV_DOWN notification. ... > Reported-by: Hangbin Liu <[email protected]> > Reported-by: Jan Tluka <[email protected]> > Signed-off-by: Lance Richardson <[email protected]> > --- > v2: Perform garbage collection on NETDEV_DOWN notification (v1 did this > in uninit op handler). Looks good, applied and queued up for -stable, thanks!
