Initialize req->req_step in Req_New()

bin/varnishd/cache/cache_esi_deliver.c

@@ -181,7 +181,7 @@ ved_include(struct req *preq, const char *src, const char *host,
 		req->vcl = preq->vcl;
 	VCL_Ref(req->vcl);
 
-	req->req_step = R_STP_TRANSPORT;
+	assert(req->req_step == R_STP_TRANSPORT);
 	req->t_req = preq->t_req;
 
 	req->transport = &VED_transport;

bin/varnishd/cache/cache_req.c

@@ -152,6 +152,8 @@ Req_New(const struct worker *wrk, struct sess *sp)
 	req->t_prev = NAN;
 	req->t_req = NAN;
 
+	req->req_step = R_STP_TRANSPORT;
+
 	return (req);
 }
 

bin/varnishd/http2/cache_http2_proto.c

@@ -597,7 +597,7 @@ h2_end_headers(struct worker *wrk, struct h2_sess *h2,
 	}
 	AN(req->http->hd[HTTP_HDR_PROTO].b);
 
-	req->req_step = R_STP_TRANSPORT;
+	assert(req->req_step == R_STP_TRANSPORT);
 	req->task->func = h2_do_req;
 	req->task->priv = req;
 	r2->scheduled = 1;

bin/varnishd/http2/cache_http2_session.c

@@ -277,7 +277,7 @@ h2_ou_session(struct worker *wrk, struct h2_sess *h2,
 	/* Start req thread */
 	r2 = h2_new_req(wrk, h2, 1, req);
 	req->transport = &H2_transport;
-	req->req_step = R_STP_TRANSPORT;
+	assert(req->req_step == R_STP_TRANSPORT);
 	req->task->func = h2_do_req;
 	req->task->priv = req;
 	r2->scheduled = 1;