Fix potential nil pointer dereference when VM tags are empty (#4117)

Azure · Oct 24, 2018 · a3c9bb1 · a3c9bb1
1 parent 4e8c8b5
commit a3c9bb1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkg/operations/kubernetesupgrade/upgradecluster.go b/pkg/operations/kubernetesupgrade/upgradecluster.go
@@ -373,7 +373,7 @@ func (uc *UpgradeCluster) addVMToAgentPool(vm compute.VirtualMachine, isUpgradab
 	}
 
 	orchestrator := "unknown"
-	if vm.Tags != nil {
+	if vm.Tags != nil && vm.Tags["orchestrator"] != nil {
 		orchestrator = *vm.Tags["orchestrator"]
 	}
 	if isUpgradableVM {