From dee5229f9b9fb7fe792dca5cc66f673f3eaece37 Mon Sep 17 00:00:00 2001
From: Derek Collison <derek@nats.io>
Date: Thu, 6 Apr 2023 10:37:31 -0700
Subject: [PATCH] Fix data race

Signed-off-by: Derek Collison <derek@nats.io>
---
 server/jetstream_api.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/server/jetstream_api.go b/server/jetstream_api.go
index cfe06442..7a7ce2c1 100644
--- a/server/jetstream_api.go
+++ b/server/jetstream_api.go
@@ -890,10 +890,17 @@ func (s *Server) sendAPIErrResponse(ci *ClientInfo, acc *Account, subject, reply
 const errRespDelay = 500 * time.Millisecond
 
 func (s *Server) sendDelayedAPIErrResponse(ci *ClientInfo, acc *Account, subject, reply, request, response string, rg *raftGroup) {
+	js := s.getJetStream()
+	if js == nil {
+		return
+	}
 	var quitCh <-chan struct{}
+	js.mu.RLock()
 	if rg != nil && rg.node != nil {
 		quitCh = rg.node.QuitC()
 	}
+	js.mu.RUnlock()
+
 	s.startGoRoutine(func() {
 		defer s.grWG.Done()
 		select {