From 69a9520f79a7a629d7eaa720b56fd5eb52555065 Mon Sep 17 00:00:00 2001
From: Brooks <brooks@solana.com>
Date: Wed, 22 Feb 2023 21:13:31 -0500
Subject: [PATCH] Flushes accounts cache before warping (#30437)

---
 core/src/validator.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/core/src/validator.rs b/core/src/validator.rs
index 3972981f1d..84a2c77eb8 100644
--- a/core/src/validator.rs
+++ b/core/src/validator.rs
@@ -1709,6 +1709,13 @@ fn maybe_warp_slot(
         info!("warping to slot {}", warp_slot);
 
         let root_bank = bank_forks.root_bank();
+
+        // An accounts hash calculation from storages will occur in warp_from_parent() below.  This
+        // requires that the accounts cache has been flushed, which requires the parent slot to be
+        // rooted.
+        root_bank.squash();
+        root_bank.force_flush_accounts_cache();
+
         bank_forks.insert(Bank::warp_from_parent(
             &root_bank,
             &Pubkey::default(),