From b9ff57c59e3705eb963d39001192ab3a0ecd2d1e Mon Sep 17 00:00:00 2001
From: gary rong <garyrong0905@gmail.com>
Date: Thu, 19 Nov 2020 04:50:11 +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 52a3c2e96..02192928b 100644
--- a/metrics/cpu_enabled.go
+++ b/metrics/cpu_enabled.go
@@ -31,6 +31,10 @@ 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)
--
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