diff --git a/core/java/android/view/InputChannel.java b/core/java/android/view/InputChannel.java
index ecb727c790160..346628bbdabda 100644
--- a/core/java/android/view/InputChannel.java
+++ b/core/java/android/view/InputChannel.java
@@ -110,6 +110,13 @@ public final class InputChannel implements Parcelable {
         return name != null ? name : "uninitialized";
     }
 
+    /**
+     * @hide
+     */
+    public boolean isValid() {
+        return mPtr != 0;
+    }
+
     /**
      * Disposes the input channel.
      * Explicitly releases the reference this object is holding on the input channel.
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 57a01a32e1b83..afc4ff4377780 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -875,10 +875,7 @@ public final class ViewRootImpl implements ViewParent,
                 // manager, to make sure we do the relayout before receiving
                 // any other events from the system.
                 requestLayout();
-                if ((mWindowAttributes.inputFeatures
-                        & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) {
-                    mInputChannel = new InputChannel();
-                }
+		mInputChannel = new InputChannel();
                 mForceDecorViewVisibility = (mWindowAttributes.privateFlags
                         & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0;
                 try {
@@ -971,7 +968,7 @@ public final class ViewRootImpl implements ViewParent,
                     mInputQueueCallback =
                         ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue();
                 }
-                if (mInputChannel != null) {
+                if (mInputChannel.isValid()) {
                     if (mInputQueueCallback != null) {
                         mInputQueue = new InputQueue();
                         mInputQueueCallback.onInputQueueCreated(mInputQueue);
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index a9f157d985a61..d08533e3ee036 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -1462,8 +1462,13 @@ public class WindowManagerService extends IWindowManager.Stub
                 return res;
             }
 
-            final boolean openInputChannels = (outInputChannel != null
-                    && (attrs.inputFeatures & INPUT_FEATURE_NO_INPUT_CHANNEL) == 0);
+            boolean openInputChannels = (outInputChannel != null
+                && (attrs.inputFeatures & INPUT_FEATURE_NO_INPUT_CHANNEL) == 0);
+            if (callingUid != SYSTEM_UID) {
+                Slog.e(TAG_WM,
+                    "App trying to use insecure INPUT_FEATURE_NO_INPUT_CHANNEL flag. Ignoring");
+                openInputChannels = true;
+            }
             if  (openInputChannels) {
                 win.openInputChannel(outInputChannel);
             }