Initialize queue buffer with Invalid Pkt Headers

Change-Id: I4166f1359746ee6829b730bac2db358af72ab16e

runtime/hsa-runtime/core/runtime/amd_aql_queue.cpp

@@ -133,7 +133,7 @@ AqlQueue::AqlQueue(GpuAgent* agent, size_t req_size_pkts, HSAuint32 node_id, Scr
   // Fill the ring buffer with invalid packet headers.
   // Leave packet content uninitialized to help track errors.
   for (uint32_t pkt_id = 0; pkt_id < queue_size_pkts; ++pkt_id) {
-    ((uint32_t*)ring_buf_)[16 * pkt_id] = HSA_PACKET_TYPE_INVALID;
+    (((core::AqlPacket*)ring_buf_)[pkt_id]).dispatch.header = HSA_PACKET_TYPE_INVALID;
   }
 
   // Zero the amd_queue_ structure to clear RPTR/WPTR before queue attach.

runtime/hsa-runtime/core/runtime/host_queue.cpp

@@ -67,6 +67,12 @@ HostQueue::HostQueue(hsa_region_t region, uint32_t ring_size, hsa_queue_type32_t
   assert(IsMultipleOf(ring_, kRingAlignment));
   assert(ring_ != NULL);
 
+  // Fill the ring buffer with invalid packet headers.
+  // Leave packet content uninitialized to help track errors.
+  for (uint32_t pkt_id = 0; pkt_id < size_; pkt_id++) {
+    (((AqlPacket*)ring_)[pkt_id]).dispatch.header = HSA_PACKET_TYPE_INVALID;
+  }
+
   amd_queue_.hsa_queue.base_address = ring_;
   amd_queue_.hsa_queue.size = size_;
   amd_queue_.hsa_queue.doorbell_signal = doorbell_signal;