From f97122f44c5c4218bb2239686cd323358c661d60 Mon Sep 17 00:00:00 2001
From: Ting-Yu Wang <anivia@google.com>
Date: Thu, 18 Jun 2020 14:28:06 -0700
Subject: Acquire lock when accessing MultiDevice's cache in String().

PiperOrigin-RevId: 317180925
---
 pkg/sentry/device/device.go | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'pkg')

diff --git a/pkg/sentry/device/device.go b/pkg/sentry/device/device.go
index 69e71e322..f45b2bd2b 100644
--- a/pkg/sentry/device/device.go
+++ b/pkg/sentry/device/device.go
@@ -188,6 +188,9 @@ type MultiDevice struct {
 
 // String stringifies MultiDevice.
 func (m *MultiDevice) String() string {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
 	buf := bytes.NewBuffer(nil)
 	buf.WriteString("cache{")
 	for k, v := range m.cache {
-- 
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