diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 8dca211..fdf5377 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -390,6 +390,7 @@
 	int cpu;
 
 	wait_queue_head_t queue;
+	struct completion start_done;
 };
 
 #define REMOVE 1
@@ -3414,6 +3415,7 @@
 	BUG_ON(smp_processor_id() != cpu);
 
 	init_waitqueue_head(&t->queue);
+	complete(&t->start_done);
 
 	pr_debug("pktgen: starting pktgen/%d:  pid=%d\n", cpu, task_pid_nr(current));
 
@@ -3615,6 +3617,7 @@
 	INIT_LIST_HEAD(&t->if_list);
 
 	list_add_tail(&t->th_list, &pktgen_threads);
+	init_completion(&t->start_done);
 
 	p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
 	if (IS_ERR(p)) {
@@ -3639,6 +3642,7 @@
 	}
 
 	wake_up_process(p);
+	wait_for_completion(&t->start_done);
 
 	return 0;
 }