CSHARP-5349: Added missing read lock.

mongodb · Nov 19, 2024 · 6d8d72b · 6d8d72b
1 parent 6f5bfef
commit 6d8d72b
Showing 1 changed file with 11 additions and 1 deletion.
diff --git a/src/MongoDB.Bson/Serialization/BsonSerializer.cs b/src/MongoDB.Bson/Serialization/BsonSerializer.cs
@@ -302,7 +302,17 @@ internal static IDiscriminatorConvention GetOrRegisterDiscriminatorConvention(Ty
         }
 
         internal static bool IsDiscriminatorConventionRegisteredAtThisLevel(Type type)
-            => __discriminatorConventions.ContainsKey(type);
+        {
+            __configLock.EnterReadLock();
+            try
+            {
+                return __discriminatorConventions.ContainsKey(type);
+            }
+            finally
+            {
+                __configLock.ExitReadLock();
+            }
+        }
 
         /// <summary>
         /// Returns whether the given type has any discriminators registered for any of its subclasses.