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-rw-r--r--pkg/sentry/kernel/tty.go2
1 files changed, 2 insertions, 0 deletions
diff --git a/pkg/sentry/kernel/tty.go b/pkg/sentry/kernel/tty.go
index 464d2306a..d0e0810e8 100644
--- a/pkg/sentry/kernel/tty.go
+++ b/pkg/sentry/kernel/tty.go
@@ -33,6 +33,8 @@ type TTY struct {
// TTY returns the thread group's controlling terminal. If nil, there is no
// controlling terminal.
func (tg *ThreadGroup) TTY() *TTY {
+ tg.pidns.owner.mu.RLock()
+ defer tg.pidns.owner.mu.RUnlock()
tg.signalHandlers.mu.Lock()
defer tg.signalHandlers.mu.Unlock()
return tg.tty