From 21e81a2961606d3a39e0044e8efc9c6007d13293 Mon Sep 17 00:00:00 2001
From: Derek Collison <derek@nats.io>
Date: Thu, 21 Sep 2023 18:34:38 -0700
Subject: [PATCH] We will panic since we unlock the mb in removeMsgBlock

Signed-off-by: Derek Collison <derek@nats.io>
---
 server/filestore.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/server/filestore.go b/server/filestore.go
index 8e054e12..0b0d84d5 100644
--- a/server/filestore.go
+++ b/server/filestore.go
@@ -1837,7 +1837,10 @@ func (fs *fileStore) recoverMsgs() error {
 			}
 		}
 		for _, mb := range emptyBlks {
+			// Need the mb lock here.
+			mb.mu.Lock()
 			fs.removeMsgBlock(mb)
+			mb.mu.Unlock()
 		}
 	}