--- old/src/hotspot/share/gc/serial/tenuredGeneration.inline.hpp	2020-08-25 10:54:38.343803719 +0200
+++ new/src/hotspot/share/gc/serial/tenuredGeneration.inline.hpp	2020-08-25 10:54:37.831795093 +0200
@@ -55,9 +55,8 @@
 
 template <typename OopClosureType>
 void TenuredGeneration::oop_since_save_marks_iterate(OopClosureType* blk) {
-  blk->set_generation(this);
   _the_space->oop_since_save_marks_iterate(blk);
-  blk->reset_generation();
+
   save_marks();
 }