--- old/src/java.base/share/classes/java/util/concurrent/atomic/LongAdder.java	2021-01-05 09:11:27.905023912 -0800
+++ new/src/java.base/share/classes/java/util/concurrent/atomic/LongAdder.java	2021-01-05 09:11:27.413027765 -0800
@@ -85,11 +85,12 @@
     public void add(long x) {
         Cell[] cs; long b, v; int m; Cell c;
         if ((cs = cells) != null || !casBase(b = base, b + x)) {
+            int index = getProbe();
             boolean uncontended = true;
             if (cs == null || (m = cs.length - 1) < 0 ||
-                (c = cs[getProbe() & m]) == null ||
+                (c = cs[index & m]) == null ||
                 !(uncontended = c.cas(v = c.value, v + x)))
-                longAccumulate(x, null, uncontended);
+                longAccumulate(x, null, uncontended, index);
         }
     }