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commit c484d8904285652246c3af212a4211b9a8955149
Author: Thomas Stuefe <stuefe@openjdk.org>
Date: Tue Mar 16 05:49:01 2021 +0000
8263557: Possible NULL dereference in Arena::destruct_contents()
Reviewed-by: kbarrett, coleenp
diff --git src/hotspot/share/memory/arena.cpp src/hotspot/share/memory/arena.cpp
index 8388f68c359..16059bed9be 100644
--- src/hotspot/share/memory/arena.cpp
+++ 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();
}
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