[DeviceMSAN] Fix urEnqueueUSMMemcpy2D return UR_RESULT_ERROR_UNSUPPORTED_FEATURE after enabling MSAN (#19286)

urEnqueueUSMMemcpy2D return UR_RESULT_ERROR_UNSUPPORTED_FEATURE after
enabling msan layer due to most adapters haven't implementing
urEnqueueUSMFill2D.

I added a quick fallback implementation in msan layer just for
urEnqueueUSMMemcpy2D.

Author: AllanZyne

unified-runtime/source/loader/layers/sanitizer/msan/msan_ddi.cpp

@@ -51,6 +51,48 @@ ur_result_t setupContext(ur_context_handle_t Context, uint32_t numDevices,
   return UR_RESULT_SUCCESS;
 }
 
+ur_result_t urEnqueueUSMFill2DFallback(ur_queue_handle_t hQueue, void *pMem,
+                                       size_t pitch, size_t patternSize,
+                                       const void *pPattern, size_t width,
+                                       size_t height,
+                                       uint32_t numEventsInWaitList,
+                                       const ur_event_handle_t *phEventWaitList,
+                                       ur_event_handle_t *phEvent) {
+  ur_result_t Result = getContext()->urDdiTable.Enqueue.pfnUSMFill2D(
+      hQueue, pMem, pitch, patternSize, pPattern, width, height,
+      numEventsInWaitList, phEventWaitList, phEvent);
+  if (Result == UR_RESULT_SUCCESS ||
+      Result != UR_RESULT_ERROR_UNSUPPORTED_FEATURE) {
+    return Result;
+  }
+
+  // fallback code
+  auto pfnUSMFill = getContext()->urDdiTable.Enqueue.pfnUSMFill;
+
+  std::vector<ur_event_handle_t> WaitEvents(numEventsInWaitList);
+
+  for (size_t HeightIndex = 0; HeightIndex < height; HeightIndex++) {
+    ur_event_handle_t Event = nullptr;
+
+    UR_CALL(pfnUSMFill(hQueue, (void *)((char *)pMem + pitch * HeightIndex),
+                       patternSize, pPattern, width, WaitEvents.size(),
+                       WaitEvents.data(), &Event));
+
+    WaitEvents.push_back(Event);
+  }
+
+  if (phEvent) {
+    UR_CALL(getContext()->urDdiTable.Enqueue.pfnEventsWait(
+        hQueue, WaitEvents.size(), WaitEvents.data(), phEvent));
+  }
+
+  for (const auto Event : WaitEvents) {
+    UR_CALL(getContext()->urDdiTable.Event.pfnRelease(Event));
+  }
+
+  return UR_RESULT_SUCCESS;
+}
+
 } // namespace
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1726,11 +1768,6 @@ ur_result_t urEnqueueUSMMemcpy2D(
     {
       auto pfnUSMMemcpy = getContext()->urDdiTable.Enqueue.pfnUSMMemcpy;
 
-      std::vector<ur_event_handle_t> WaitEvents(numEventsInWaitList);
-      for (uint32_t i = 0; i < numEventsInWaitList; i++) {
-        WaitEvents[i] = phEventWaitList[i];
-      }
-
       for (size_t HeightIndex = 0; HeightIndex < height; HeightIndex++) {
         ur_event_handle_t Event = nullptr;
         const auto DstOrigin =
@@ -1742,8 +1779,8 @@ ur_result_t urEnqueueUSMMemcpy2D(
                                        width - 1) +
             MSAN_ORIGIN_GRANULARITY;
         pfnUSMMemcpy(hQueue, false, (void *)DstOrigin, (void *)SrcOrigin,
-                     SrcOriginEnd - SrcOrigin, WaitEvents.size(),
-                     WaitEvents.data(), &Event);
+                     SrcOriginEnd - SrcOrigin, numEventsInWaitList,
+                     phEventWaitList, &Event);
         Events.push_back(Event);
       }
     }
@@ -1756,9 +1793,9 @@ ur_result_t urEnqueueUSMMemcpy2D(
     const auto DstShadow = DstDI->Shadow->MemToShadow((uptr)pDst);
     const char Pattern = 0;
     ur_event_handle_t Event = nullptr;
-    UR_CALL(getContext()->urDdiTable.Enqueue.pfnUSMFill2D(
-        hQueue, (void *)DstShadow, dstPitch, 1, &Pattern, width, height, 0,
-        nullptr, &Event));
+    UR_CALL(urEnqueueUSMFill2DFallback(hQueue, (void *)DstShadow, dstPitch, 1,
+                                       &Pattern, width, height, 0, nullptr,
+                                       &Event));
     Events.push_back(Event);
   }
 
@@ -1767,7 +1804,7 @@ ur_result_t urEnqueueUSMMemcpy2D(
         hQueue, Events.size(), Events.data(), phEvent));
   }
 
-  for (const auto &E : Events)
+  for (const auto E : Events)
     UR_CALL(getContext()->urDdiTable.Event.pfnRelease(E));
 
   return UR_RESULT_SUCCESS;