From 47a34607b4a89e81b80b2237f1aef7e8f23c3c42 Mon Sep 17 00:00:00 2001
From: Boyu Yang <yangby@cryptape.com>
Date: Fri, 13 Oct 2023 14:28:33 +0800
Subject: [PATCH] fix: incorrect and inadequate checks of sync message

---
 sync/src/synchronizer/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sync/src/synchronizer/mod.rs b/sync/src/synchronizer/mod.rs
index 1ad1dfccffb..3808a8ca1fa 100644
--- a/sync/src/synchronizer/mod.rs
+++ b/sync/src/synchronizer/mod.rs
@@ -716,7 +716,7 @@ impl CKBProtocolHandler for Synchronizer {
             Ok(msg) => {
                 let item = msg.to_enum();
                 if let packed::SyncMessageUnionReader::SendBlock(ref reader) = item {
-                    if reader.count_extra_fields() > 1 {
+                    if reader.has_extra_fields() || reader.block.count_extra_fields() > 1 {
                         info!(
                             "Peer {} sends us a malformed message: \
                              too many fields in SendBlock",