ipn: add missing locking in LocalBackend.NetMap
Looks like it's only used by tests.
@@ -769,6 +769,8 @@ func (b *LocalBackend) doSetHostinfoFilterServices(hi *tailcfg.Hostinfo) {
// NetMap returns the latest cached network map received from
// controlclient, or nil if no network map was received yet.
func (b *LocalBackend) NetMap() *controlclient.NetworkMap {
+ b.mu.Lock()
+ defer b.mu.Unlock()
return b.netMap
}
