diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index a2172c9..36b1469 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -96,7 +96,8 @@
 // ---------------------------------------------------------------------------
 
 AudioTrack::AudioTrack()
-    : mStatus(NO_INIT),
+    : mCblk(NULL),
+      mStatus(NO_INIT),
       mIsTimed(false),
       mPreviousPriority(ANDROID_PRIORITY_NORMAL),
       mPreviousSchedulingGroup(SP_DEFAULT)
@@ -118,7 +119,8 @@
         void* user,
         int notificationFrames,
         int sessionId)
-    : mStatus(NO_INIT),
+    : mCblk(NULL),
+      mStatus(NO_INIT),
       mIsTimed(false),
       mPreviousPriority(ANDROID_PRIORITY_NORMAL),
       mPreviousSchedulingGroup(SP_DEFAULT)
@@ -144,7 +146,8 @@
         void* user,
         int notificationFrames,
         int sessionId)
-    : mStatus(NO_INIT),
+    : mCblk(NULL),
+      mStatus(NO_INIT),
       mIsTimed(false),
       mPreviousPriority(ANDROID_PRIORITY_NORMAL), mPreviousSchedulingGroup(SP_DEFAULT)
 #ifdef QCOM_HARDWARE
@@ -169,7 +172,8 @@
         void* user,
         int notificationFrames,
         int sessionId)
-    : mStatus(NO_INIT),
+  :   mCblk(NULL),
+      mStatus(NO_INIT),
       mIsTimed(false),
       mPreviousPriority(ANDROID_PRIORITY_NORMAL),
       mPreviousSchedulingGroup(SP_DEFAULT)
@@ -1599,7 +1603,8 @@
     result.append(" AudioTrack::dump\n");
     snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n", mStreamType, mVolume[0], mVolume[1]);
     result.append(buffer);
-    snprintf(buffer, 255, "  format(%d), channel count(%d), frame count(%d)\n", mFormat, mChannelCount, mCblk->frameCount);
+    snprintf(buffer, 255, "  format(%d), channel count(%d), frame count(%d)\n", mFormat, mChannelCount,
+             (mCblk == 0) ? 0 : mCblk->frameCount);
     result.append(buffer);
     snprintf(buffer, 255, "  sample rate(%d), status(%d), muted(%d)\n", (mCblk == 0) ? 0 : mCblk->sampleRate, mStatus, mMuted);
     result.append(buffer);