[vm-validator] hot fix for vm-validator memory leak (aptos-labs#2193)

vm-validator/Cargo.toml

@@ -19,6 +19,7 @@ aptos-vm = { path = "../aptos-move/aptos-vm" }
 
 executor = { path = "../execution/executor" }
 executor-types = { path = "../execution/executor-types" }
+scratchpad = { path = "../storage/scratchpad" }
 storage-interface = { path = "../storage/storage-interface" }
 
 [dev-dependencies]

vm-validator/src/vm_validator.rs

@@ -12,6 +12,8 @@ use aptos_types::{
 };
 use aptos_vm::AptosVM;
 use fail::fail_point;
+use scratchpad::SparseMerkleTree;
+use std::ops::Deref;
 use std::sync::Arc;
 use storage_interface::no_proof_fetcher::NoProofFetcher;
 use storage_interface::{
@@ -40,14 +42,16 @@ fn latest_state_view(db_reader: &Arc<dyn DbReader>) -> CachedStateView<NoProofFe
         .get_latest_executed_trees()
         .expect("Should not fail.");
 
-    ledger_view
-        .state_view(
-            StateViewId::TransactionValidation {
-                base_version: ledger_view.version().expect("Must be bootstrapped."),
-            },
-            db_reader,
-        )
-        .expect("failed to get latest state view.")
+    CachedStateView::new(
+        StateViewId::TransactionValidation {
+            base_version: ledger_view.version().expect("Must be bootstrapped."),
+        },
+        db_reader.deref(),
+        ledger_view.txn_accumulator().num_leaves(),
+        SparseMerkleTree::new(ledger_view.state().current.root_hash()),
+        NoProofFetcher::new(db_reader.clone()),
+    )
+    .expect("failed to get latest state view.")
 }
 
 pub struct VMValidator {