From 8f3533aad4cca913cb208f15223f2cf1cf873de4 Mon Sep 17 00:00:00 2001
From: ZenoWang <wzybuaasoft@163.com>
Date: Thu, 2 Mar 2023 15:36:25 +0000
Subject: [PATCH] [FIX] fix read tx data undo action core

---
 src/storage/tx_table/ob_tx_data_table.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/storage/tx_table/ob_tx_data_table.cpp b/src/storage/tx_table/ob_tx_data_table.cpp
index c1856f7008..9c2b10ecd4 100644
--- a/src/storage/tx_table/ob_tx_data_table.cpp
+++ b/src/storage/tx_table/ob_tx_data_table.cpp
@@ -310,6 +310,8 @@ int ObTxDataTable::deep_copy_undo_status_list_(const ObUndoStatusList &in_list,
       STORAGE_LOG(WARN, "alloc undo status node failed.", KR(ret));
     } else {
       *new_node = *cur_in_node;
+      // reset next pointer to avoid invalid free
+      new_node->next_ = nullptr;
       if (nullptr == pre_node) {
         out_list.head_ = new_node;
       } else {