From fa5b091b4c2064bd865bfb32154c395dab2f56a7 Mon Sep 17 00:00:00 2001
From: "Jeff Washington (jwash)"
 <75863576+jeffwashington@users.noreply.github.com>
Date: Tue, 28 Sep 2021 16:09:36 -0500
Subject: [PATCH] prior to panicing with cap mismatch, try other calculation
 (#20292)

---
 runtime/src/bank.rs | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/runtime/src/bank.rs b/runtime/src/bank.rs
index 6afc5d0260..dcb636b439 100644
--- a/runtime/src/bank.rs
+++ b/runtime/src/bank.rs
@@ -5010,7 +5010,7 @@ impl Bank {
     pub fn update_accounts_hash_with_index_option(
         &self,
         use_index: bool,
-        debug_verify: bool,
+        mut debug_verify: bool,
         slots_per_epoch: Option<Slot>,
     ) -> Hash {
         let (hash, total_lamports) = self
@@ -5034,6 +5034,24 @@ impl Bank {
                 ("capitalization", self.capitalization(), i64),
             );
 
+            if !debug_verify {
+                // cap mismatch detected. It has been logged to metrics above.
+                // Run both versions of the calculation to attempt to get more info.
+                debug_verify = true;
+                self.rc
+                    .accounts
+                    .accounts_db
+                    .update_accounts_hash_with_index_option(
+                        use_index,
+                        debug_verify,
+                        self.slot(),
+                        &self.ancestors,
+                        Some(self.capitalization()),
+                        false,
+                        slots_per_epoch,
+                    );
+            }
+
             panic!(
                 "capitalization_mismatch. slot: {}, calculated_lamports: {}, capitalization: {}",
                 self.slot(),