From c036da5dffdf6cad912abe2723e69c04b59430b7 Mon Sep 17 00:00:00 2001
From: Jamie Liu <jamieliu@google.com>
Date: Tue, 7 Aug 2018 13:08:37 -0700
Subject: Hold TaskSet.mu in Task.Parent.

PiperOrigin-RevId: 207766238
Change-Id: Id3b66d8fe1f44c3570f67fa5ae7ba16021e35be1
---
 pkg/sentry/kernel/threads.go | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'pkg/sentry/kernel')

diff --git a/pkg/sentry/kernel/threads.go b/pkg/sentry/kernel/threads.go
index 844213c35..3d5713106 100644
--- a/pkg/sentry/kernel/threads.go
+++ b/pkg/sentry/kernel/threads.go
@@ -441,6 +441,8 @@ func (t *Task) Timekeeper() *Timekeeper {
 
 // Parent returns t's parent.
 func (t *Task) Parent() *Task {
+	t.tg.pidns.owner.mu.RLock()
+	defer t.tg.pidns.owner.mu.RUnlock()
 	return t.parent
 }
 
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