diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f22dae7b3..a3f4ee1fab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,10 +5,14 @@ Please mark all change in change log and use the issue from GitHub
 # Milvus 1.1.1 (TBD)
 ## Bug
 -   \#4897 Query results contain some deleted ids
+-   \#5115 Relax restrictions on topk from 16384 to 1M for CPU search
 -   \#5164 Exception should be raised if insert or delete entity on the none-existed partition
 -   \#5191 Mishards throw "index out of range" error after continually search/insert for a period of time
+-   \#5398 Random crash after request is executed
 -   \#5537 Failed to load bloom filter after suddenly power off
+-   \#5544 Relax restrictions on index_file_size from 4GB to 128Gb
 -   \#5574 IVF_SQ8 and IVF_PQ cannot be built on multiple GPUs
+-   \#5747 Search with big nq and topk crash milvus
 
 ## Feature
 -   \#1434 Storage: enabling s3 storage support (implemented by Unisinsight)
diff --git a/core/src/server/delivery/request/BaseRequest.cpp b/core/src/server/delivery/request/BaseRequest.cpp
index 4d3484b1f4..8e0e0978bf 100644
--- a/core/src/server/delivery/request/BaseRequest.cpp
+++ b/core/src/server/delivery/request/BaseRequest.cpp
@@ -108,8 +108,8 @@ BaseRequest::Execute() {
 
 Status
 BaseRequest::PostExecute() {
-    status_ = OnPostExecute();
-    return status_;
+    // not allow assign status_ here, because PostExecute() and Execute() are running on different threads
+    return OnPostExecute();
 }
 
 Status
diff --git a/core/src/server/delivery/request/BaseRequest.h b/core/src/server/delivery/request/BaseRequest.h
index 083f5b61f0..fd3eacc767 100644
--- a/core/src/server/delivery/request/BaseRequest.h
+++ b/core/src/server/delivery/request/BaseRequest.h
@@ -213,12 +213,12 @@ class BaseRequest {
     RequestType type_;
     std::string request_group_;
     bool async_;
-    Status status_;
 
  private:
     mutable std::mutex finish_mtx_;
     std::condition_variable finish_cond_;
     bool done_;
+    Status status_;
 
  public:
     const std::shared_ptr<milvus::server::Context>&