add mutex

Author: yingcong-wu

source/loader/layers/sanitizer/asan/asan_ddi.cpp

@@ -474,6 +474,13 @@ __urdlllocal ur_result_t UR_APICALL urEnqueueKernelLaunch(
     /// [out][optional] return an event object that identifies this
     /// particular kernel execution instance.
     ur_event_handle_t *phEvent) {
+
+  // This mutex is to prevent concurrent kernel launches on the same queue or
+  // across different queues as the DeviceASAN local/private shadow memory
+  // does not support concurrent kernel launches now.
+  static ur_shared_mutex KernelLaunchMutex;
+  std::scoped_lock<ur_shared_mutex> Guard(KernelLaunchMutex);
+
   auto pfnKernelLaunch = getContext()->urDdiTable.Enqueue.pfnKernelLaunch;
 
   if (nullptr == pfnKernelLaunch) {