diff --git a/services/audioflinger/TrackBase.h b/services/audioflinger/TrackBase.h
index 4402d99..8f720b5 100644
--- a/services/audioflinger/TrackBase.h
+++ b/services/audioflinger/TrackBase.h
@@ -64,6 +64,7 @@
                                 void *buffer,
                                 size_t bufferSize,
                                 audio_session_t sessionId,
+                                pid_t creatorPid,
                                 uid_t uid,
                                 bool isOut,
                                 alloc_type alloc = ALLOC_CBLK,
@@ -79,6 +80,8 @@
             audio_track_cblk_t* cblk() const { return mCblk; }
             audio_session_t sessionId() const { return mSessionId; }
             uid_t       uid() const { return mUid; }
+            pid_t       creatorPid() const { return mCreatorPid; }
+
             audio_port_handle_t portId() const { return mPortId; }
     virtual status_t    setSyncEvent(const sp<SyncEvent>& event);
 
@@ -310,6 +313,8 @@
     std::atomic<bool>   mServerLatencyFromTrack{}; // latency from track or server timestamp.
     std::atomic<double> mServerLatencyMs{};        // last latency pushed from server thread.
     std::atomic<FrameTime> mKernelFrameTime{};     // last frame time on kernel side.
+    const pid_t         mCreatorPid;  // can be different from mclient->pid() for instance
+                                      // when created by NuPlayer on behalf of a client
 };
 
 // PatchProxyBufferProvider interface is implemented by PatchTrack and PatchRecord.