SWDEV-374402 - Added check for invalid events in hipExtLaunchKernel

Change-Id: I8dfd69aa1ef38971a72b98c723d2099347a66d11

hipamd/src/hip_module.cpp

@@ -497,7 +497,7 @@ extern "C" hipError_t hipExtLaunchKernel(const void* hostFunction, dim3 gridDim,
   HIP_INIT_API(hipExtLaunchKernel, hostFunction, gridDim, blockDim, args, sharedMemBytes,
                stream, startEvent, stopEvent, flags);
 
-  if (!hip::isValid(stream)) {
+  if (!hip::isValid(stream) || !hip::isValid(startEvent) || !hip::isValid(stopEvent)) {
     HIP_RETURN(hipErrorInvalidValue);
   }