diff --git a/services/surfaceflinger/Scheduler/EventThread.cpp b/services/surfaceflinger/Scheduler/EventThread.cpp
index cbea77e..639ba5a 100644
--- a/services/surfaceflinger/Scheduler/EventThread.cpp
+++ b/services/surfaceflinger/Scheduler/EventThread.cpp
@@ -177,6 +177,11 @@
 }
 
 binder::Status EventThreadConnection::stealReceiveChannel(gui::BitTube* outChannel) {
+    std::scoped_lock lock(mLock);
+    if (mChannel.initCheck() != NO_ERROR) {
+        return binder::Status::fromStatusT(NAME_NOT_FOUND);
+    }
+
     outChannel->setReceiveFd(mChannel.moveReceiveFd());
     outChannel->setSendFd(base::unique_fd(dup(mChannel.getSendFd())));
     return binder::Status::ok();
diff --git a/services/surfaceflinger/Scheduler/EventThread.h b/services/surfaceflinger/Scheduler/EventThread.h
index c406478..adb96fd 100644
--- a/services/surfaceflinger/Scheduler/EventThread.h
+++ b/services/surfaceflinger/Scheduler/EventThread.h
@@ -112,7 +112,8 @@
 private:
     virtual void onFirstRef();
     EventThread* const mEventThread;
-    gui::BitTube mChannel;
+    std::mutex mLock;
+    gui::BitTube mChannel GUARDED_BY(mLock);
 
     std::vector<DisplayEventReceiver::Event> mPendingEvents;
 };