From d4f1b8a6dd1c0886e5dc94abdcebe2bb28e3f6bb Mon Sep 17 00:00:00 2001
From: Daniel Liu <liudaniel@qq.com>
Date: Fri, 13 Dec 2024 14:00:12 +0800
Subject: [PATCH] metrics: fix the panic for reading empty cpu stats (#21864)

---
 metrics/cpu_enabled.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/metrics/cpu_enabled.go b/metrics/cpu_enabled.go
index 15476aa902..87a2620a52 100644
--- a/metrics/cpu_enabled.go
+++ b/metrics/cpu_enabled.go
@@ -32,6 +32,10 @@ func ReadCPUStats(stats *CPUStats) {
 		log.Error("Could not read cpu stats", "err", err)
 		return
 	}
+	if len(timeStats) == 0 {
+		log.Error("Empty cpu stats")
+		return
+	}
 	// requesting all cpu times will always return an array with only one time stats entry
 	timeStat := timeStats[0]
 	stats.GlobalTime = int64((timeStat.User + timeStat.Nice + timeStat.System) * cpu.ClocksPerSec)