diff --git a/pkg/sentry/kernel/task_exit.go b/pkg/sentry/kernel/task_exit.go
index c4d9c8c6e..eb5bbbb28 100644
--- a/pkg/sentry/kernel/task_exit.go
+++ b/pkg/sentry/kernel/task_exit.go
@@ -192,6 +192,13 @@ func (ts *TaskSet) Kill(ws linux.WaitStatus) {
 	}
 }
 
+// IsExiting returns true if all tasks in ts are exiting or have exited.
+func (ts *TaskSet) IsExiting() bool {
+	ts.mu.Lock()
+	defer ts.mu.Unlock()
+	return ts.Root.exiting
+}
+
 // advanceExitStateLocked checks that t's current exit state is oldExit, then
 // sets it to newExit. If t's current exit state is not oldExit,
 // advanceExitStateLocked panics.