From bee9915eee978057581cec3e928ef41faadf4b71 Mon Sep 17 00:00:00 2001
From: Ti Chi Robot <ti-community-prow-bot@tidb.io>
Date: Fri, 11 Nov 2022 18:31:53 +0800
Subject: [PATCH] util: add lock for MergeBasicStats (#38998) (#39040)

close pingcap/tidb#38994
---
 util/execdetails/execdetails.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/util/execdetails/execdetails.go b/util/execdetails/execdetails.go
index 4c0670e93eb97..2c7103a7901fb 100644
--- a/util/execdetails/execdetails.go
+++ b/util/execdetails/execdetails.go
@@ -396,6 +396,8 @@ func (crs *CopRuntimeStats) GetActRows() (totalRows int64) {
 
 // MergeBasicStats traverses basicCopRuntimeStats in the CopRuntimeStats and collects some useful information.
 func (crs *CopRuntimeStats) MergeBasicStats() (procTimes []time.Duration, totalTime time.Duration, totalTasks, totalLoops, totalThreads int32) {
+	crs.Lock()
+	defer crs.Unlock()
 	procTimes = make([]time.Duration, 0, 32)
 	for _, instanceStats := range crs.stats {
 		for _, stat := range instanceStats {