fix crash bug

vulkan/FaceApp.cpp

@@ -1,4 +1,4 @@
-#include "FaceApp.h"
+#include "FaceApp.h"
 #include "hardcode_data.h"
 #include "lodepng.h"
 #include <sstream>
@@ -984,9 +984,12 @@ void FaceApp::endSingleTimeCommands(VkCommandBuffer commandBuffer) {
     submitInfo.commandBufferCount = 1;
     submitInfo.pCommandBuffers = &commandBuffer;
 
-    vkQueueSubmit(graphicsQueue, 1, &submitInfo, VK_NULL_HANDLE);
-    vkQueueWaitIdle(graphicsQueue);
-
+    // 与 Application::drawFrame 共用 graphicsQueue，必须串行，避免驱动内 SIGSEGV
+    {
+        std::lock_guard<std::mutex> lock(mtx);
+        vkQueueSubmit(graphicsQueue, 1, &submitInfo, VK_NULL_HANDLE);
+        vkQueueWaitIdle(graphicsQueue);
+    }
     vkFreeCommandBuffers(device, commandPool, 1, &commandBuffer);
 }