diff --git a/llvm/lib/ExecutionEngine/Orc/EPCGenericJITLinkMemoryManager.cpp b/llvm/lib/ExecutionEngine/Orc/EPCGenericJITLinkMemoryManager.cpp
--- a/llvm/lib/ExecutionEngine/Orc/EPCGenericJITLinkMemoryManager.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/EPCGenericJITLinkMemoryManager.cpp
@@ -62,10 +62,13 @@
         rt::SPSSimpleExecutorMemoryManagerFinalizeSignature>(
         [OnFinalize = std::move(OnFinalize)](Error SerializationErr,
                                              Error FinalizeErr) {
-          if (SerializationErr)
-            OnFinalize(std::move(SerializationErr));
-          else
-            OnFinalize(std::move(FinalizeErr));
+          std::thread([SE = std::move(SerializationErr),
+                       FE = std::move(FinalizeErr), OnFinalize]() mutable {
+            if (SE)
+              OnFinalize(std::move(SE));
+            else
+              OnFinalize(std::move(FE));
+          }).detach();
         },
         Parent.SAs.Finalize.getValue(), Parent.SAs.Allocator, std::move(FR));
   }