8263557: Possible NULL dereference in Arena::destruct_contents()

Reviewed-by: kbarrett, coleenp
openjdk · Mar 16, 2021 · c484d89 · c484d89
1 parent ba35193
commit c484d89
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/hotspot/share/memory/arena.cpp b/src/hotspot/share/memory/arena.cpp
@@ -310,7 +310,9 @@ void Arena::destruct_contents() {
   // reset size before chop to avoid a rare racing condition
   // that can have total arena memory exceed total chunk memory
   set_size_in_bytes(0);
-  _first->chop();
+  if (_first != NULL) {
+    _first->chop();
+  }
   reset();
 }