On 28/02/18 13:23, Jason Andryuk wrote: > A toolstack may delete the vif frontend and backend xenstore entries > while xen-netfront is in the removal code path. In that case, the > checks for xenbus_read_driver_state would return XenbusStateUnknown, and > xennet_remove would hang indefinitely. This hang prevents system > shutdown. > > xennet_remove must be able to handle XenbusStateUnknown, and > netback_changed must also wake up the wake_queue for that state as well. > > Fixes: 5b5971df3bc2 ("xen-netfront: remove warning when unloading module") > > Signed-off-by: Jason Andryuk <jandr...@gmail.com> > Cc: Eduardo Otubo <ot...@redhat.com>
Committed to xen/tip for-linus-4.16a Juergen