wip

crates/engine/tree/src/tree/payload_validator.rs

@@ -534,7 +534,7 @@ where
         let mut handle = ensure_ok!(self.spawn_payload_processor(
             env.clone(),
             txs,
-            provider_builder,
+            provider_builder.clone(),
             overlay_factory.clone(),
             strategy,
         ));
@@ -764,10 +764,19 @@ where
             }
 
             let (root, updates) = ensure_ok_post_block!(
-                Self::compute_state_root_serial(overlay_factory.clone(), &hashed_state),
+                Self::compute_state_root_serial_with_provider(
+                    provider_builder.clone(),
+                    &hashed_state
+                ),
                 block
             );
 
+            self.compare_trie_updates_with_serial(
+                overlay_factory.clone(),
+                &hashed_state,
+                updates.clone(),
+            );
+
             if state_root_task_failed {
                 self.metrics.block_validation.state_root_task_fallback_success_total.increment(1);
             }
@@ -1126,6 +1135,14 @@ where
             .root_with_updates()?)
     }
 
+    fn compute_state_root_serial_with_provider(
+        provider_builder: StateProviderBuilder<N, P>,
+        hashed_state: &LazyHashedPostState,
+    ) -> ProviderResult<(B256, TrieUpdates)> {
+        let provider = provider_builder.build()?;
+        provider.state_root_with_updates(hashed_state.get().clone())
+    }
+
     /// Awaits the state root from the background task, with an optional timeout fallback.
     ///
     /// If a timeout is configured (`state_root_task_timeout`), this method first waits for the