From 66c9c617f322843f487786beac26f3772f1acf1a Mon Sep 17 00:00:00 2001
From: Steven Czabaniuk <steven@solana.com>
Date: Thu, 22 Apr 2021 11:06:28 -0500
Subject: [PATCH] Check size on insertion

---
 ledger/src/blockstore.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ledger/src/blockstore.rs b/ledger/src/blockstore.rs
index c5dcd7236e0707..4c69881b64897e 100644
--- a/ledger/src/blockstore.rs
+++ b/ledger/src/blockstore.rs
@@ -1385,6 +1385,7 @@ impl Blockstore {
         shred: &Shred,
         write_batch: &mut WriteBatch,
     ) -> Result<Vec<(u32, u32)>> {
+        use crate::shred::SIZE_OF_DATA_SHRED_PAYLOAD;
         let slot = shred.slot();
         let index = u64::from(shred.index());
 
@@ -1422,7 +1423,7 @@ impl Blockstore {
             (slot, index),
             // Payload will be padded out to SHRED_PAYLOAD_SIZE
             // But only need to store the bytes within data_header.size
-            &shred.payload[..shred.data_header.size as usize],
+            &shred.payload[..cmp::min(SIZE_OF_DATA_SHRED_PAYLOAD, shred.data_header.size.into())],
         )?;
         data_index.set_present(index, true);
         let newly_completed_data_sets = update_slot_meta(