diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index 0b18ae0..b595b1d 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -441,6 +441,9 @@
     const size_t SIZE = 256;
     char buffer[SIZE];
     String8 result;
+    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
+    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
+
     if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
         snprintf(buffer, SIZE, "Permission Denial: "
                 "can't dump MediaPlayerService from pid=%d, uid=%d\n",
@@ -452,6 +455,7 @@
         for (int i = 0, n = mClients.size(); i < n; ++i) {
             sp<Client> c = mClients[i].promote();
             if (c != 0) c->dump(fd, args);
+            clients.add(c);
         }
         if (mMediaRecorderClients.size() == 0) {
                 result.append(" No media recorder client\n\n");
@@ -464,6 +468,7 @@
                     write(fd, result.string(), result.size());
                     result = "\n";
                     c->dump(fd, args);
+                    mediaRecorderClients.add(c);
                 }
             }
         }