Data race

[tossp]

Describe the bug
The loadErr variable is read and written simultaneously

gopsutil/load/load_windows.go

Lines 16 to 23 in c806740

	var (
	loadErr error
	loadAvg1M float64 = 0.0
	loadAvg5M float64 = 0.0
	loadAvg15M float64 = 0.0
	loadAvgMutex sync.RWMutex
	loadAvgGoroutineOnce sync.Once
	)

gopsutil/load/load_windows.go

Lines 46 to 54 in c806740

	f := func() {
	currentLoad, err = counter.GetValue()
	loadErr = err
	loadAvgMutex.Lock()
	loadAvg1M = loadAvg1M*loadAvgFactor1M + currentLoad*(1-loadAvgFactor1M)
	loadAvg5M = loadAvg5M*loadAvgFactor5M + currentLoad*(1-loadAvgFactor5M)
	loadAvg15M = loadAvg15M*loadAvgFactor15M + currentLoad*(1-loadAvgFactor15M)
	loadAvgMutex.Unlock()
	}

gopsutil/load/load_windows.go

Lines 72 to 85 in c806740

	func AvgWithContext(ctx context.Context) (*AvgStat, error) {
	loadAvgGoroutineOnce.Do(func() {
	go loadAvgGoroutine(ctx)
	})
	loadAvgMutex.RLock()
	defer loadAvgMutex.RUnlock()
	ret := AvgStat{
	Load1: loadAvg1M,
	Load5: loadAvg5M,
	Load15: loadAvg15M,
	}
	return &ret, loadErr
	}

==================
WARNING: DATA RACE
Write at 0x000143310d10 by goroutine 33:
  github.com/shirou/gopsutil/v3/load.loadAvgGoroutine.func1()
      github.com/shirou/gopsutil/[email protected]/load/load_windows.go:48 +0x13a
  github.com/shirou/gopsutil/v3/load.loadAvgGoroutine()
      github.com/shirou/gopsutil/[email protected]/load/load_windows.go:62 +0x338
  github.com/shirou/gopsutil/v3/load.AvgWithContext.func1.1()
      github.com/shirou/gopsutil/[email protected]/load/load_windows.go:74 +0x44

Previous read at 0x000143310d10 by goroutine 34:
  github.com/shirou/gopsutil/v3/load.AvgWithContext()
      github.com/shirou/gopsutil/[email protected]/load/load_windows.go:84 +0x1a4
  github.com/shirou/gopsutil/v3/load.Avg()
      github.com/shirou/gopsutil/[email protected]/load/load_windows.go:69 +0x84
  kitchenette/internal/app/service/sstat.readloadF()
      ts/xxxx.go:30 +0x8a
  kitchenette/internal/app/service/sstat.readload()
      ts/xxxx.go:24 +0xcb

Goroutine 33 (running) created at:
  github.com/shirou/gopsutil/v3/load.AvgWithContext.func1()
      github.com/shirou/gopsutil/[email protected]/load/load_windows.go:74 +0xa4
  sync.(*Once).doSlow()
      sync/once.go:74 +0xf0
  sync.(*Once).Do()
      sync/once.go:65 +0x44
  github.com/shirou/gopsutil/v3/load.AvgWithContext()
      github.com/shirou/gopsutil/[email protected]/load/load_windows.go:73 +0xa4
  github.com/shirou/gopsutil/v3/load.Avg()
      github.com/shirou/gopsutil/[email protected]/load/load_windows.go:69 +0x84
  ts/xxxx.readloadF()
      ts/xxxx.go:30 +0x8a
  ts/xxxx.init.4()
      ts/xxxx.go:16 +0x8a

Goroutine 34 (running) created at:
  ts/xxxx.init.4()
      ts/xxxx.go:17 +0x96
==================

To Reproduce
It will take about 10 minutes to wait.

var statlock sync.RWMutex

func init() {
	readloadF()
	go readload()
}

func readload() {
	loadTicker := time.NewTicker( 5 * time.Second)
	defer loadTicker.Stop()
	for range loadTicker.C {
		readloadF()
	}
}
func readloadF() {
	statlock.Lock()
	defer statlock.Unlock()
	load.Avg()
	load.Misc()
}

Expected behavior
No data race.

Environment (please complete the following information):

• Windows: Microsoft Windows [Version 10.0.22621.2283]

Additional context