X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/bc25d5adc43cf10b6df7dc28556aba083f34444a..e44725a3792df227f189f88ffb2cd1dbf0e93489:/lib/dispatchcloud/worker/pool.go

diff --git a/lib/dispatchcloud/worker/pool.go b/lib/dispatchcloud/worker/pool.go
index 3de207ffa0..1d600e3702 100644
--- a/lib/dispatchcloud/worker/pool.go
+++ b/lib/dispatchcloud/worker/pool.go
@@ -908,6 +908,9 @@ func (wp *Pool) Instances() []InstanceView {
 // KillInstance destroys a cloud VM instance. It returns an error if
 // the given instance does not exist.
 func (wp *Pool) KillInstance(id cloud.InstanceID, reason string) error {
+	wp.setupOnce.Do(wp.setup)
+	wp.mtx.Lock()
+	defer wp.mtx.Unlock()
 	wkr, ok := wp.workers[id]
 	if !ok {
 		return errors.New("instance not found")