From 0a9c3ff98d29135ae77b7c275e7cbe963c457566 Mon Sep 17 00:00:00 2001
From: Ledjon Behluli <behluliledjon@hotmail.com>
Date: Sat, 26 Jul 2025 22:46:32 +0200
Subject: [PATCH] fix potential thread-safety prblem on recovery

---
 src/Orleans.Journaling/StateMachineManager.cs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/Orleans.Journaling/StateMachineManager.cs b/src/Orleans.Journaling/StateMachineManager.cs
index f45527075c1..6f62ab9d936 100644
--- a/src/Orleans.Journaling/StateMachineManager.cs
+++ b/src/Orleans.Journaling/StateMachineManager.cs
@@ -303,9 +303,12 @@ private async Task RecoverAsync(CancellationToken cancellationToken)
             }
         }
 
-        foreach (var stateMachine in _stateMachines.Values)
+        lock (_lock)
         {
-            stateMachine.OnRecoveryCompleted();
+            foreach (var stateMachine in _stateMachines.Values)
+            {
+                stateMachine.OnRecoveryCompleted();
+            }
         }
     }