diff -r c97db0855565 -r 758c07667682 src/share/vm/utilities/workgroup.cpp
--- a/src/share/vm/utilities/workgroup.cpp	Tue Feb 04 17:38:01 2020 +0800
+++ b/src/share/vm/utilities/workgroup.cpp	Tue Feb 04 18:13:14 2020 +0800
@@ -464,7 +464,6 @@
   if (old == 0) {
     old = Atomic::cmpxchg(1, &_tasks[t], 0);
   }
-  assert(_tasks[t] == 1, "What else?");
   bool res = old != 0;
 #ifdef ASSERT
   if (!res) {