From 782aeba89972b2d2cf1f98dd0f93111495c61f54 Mon Sep 17 00:00:00 2001
From: Derek Collison <derek@nats.io>
Date: Tue, 16 Jan 2024 12:57:04 -0800
Subject: [PATCH] Fix for a datarace with stream stop and removal from
 jsa.streams.

Signed-off-by: Derek Collison <derek@nats.io>
---
 server/jetstream_cluster.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/server/jetstream_cluster.go b/server/jetstream_cluster.go
index 770b9957e73..080d3dd916c 100644
--- a/server/jetstream_cluster.go
+++ b/server/jetstream_cluster.go
@@ -1123,6 +1123,7 @@ func (js *jetStream) checkForOrphans() {
 
 	for accName, jsa := range js.accounts {
 		asa := cc.streams[accName]
+		jsa.mu.RLock()
 		for stream, mset := range jsa.streams {
 			if sa := asa[stream]; sa == nil {
 				streams = append(streams, mset)
@@ -1136,6 +1137,7 @@ func (js *jetStream) checkForOrphans() {
 				}
 			}
 		}
+		jsa.mu.RUnlock()
 	}
 	js.mu.Unlock()