# HG changeset patch
# User tschatzl
# Date 1528363255 -7200
# Node ID ab967988f85032d23a58e4a341ba6ce96dfe8345
# Parent  523c2a73a3dcef65e77b2d5be1d9794f41f8f1af
8202049: G1: ReferenceProcessor doesn't handle mark stack overflow
Summary: Issue a fatal error when mark stack overflows during reference processing in the Remark phase
Reviewed-by: kbarrett

diff -r 523c2a73a3dc -r ab967988f850 src/hotspot/share/gc/g1/g1ConcurrentMark.cpp
--- a/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	Thu Jun 07 11:20:30 2018 +0200
+++ b/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	Thu Jun 07 11:20:55 2018 +0200
@@ -1651,7 +1651,11 @@
   }
 
   if (has_overflown()) {
-    // We can not trust g1_is_alive if the marking stack overflowed
+    // We can not trust g1_is_alive and the contents of the heap if the marking stack
+    // overflowed while processing references. Exit the VM.
+    fatal("Overflow during reference processing, can not continue. Please "
+          "increase MarkStackSizeMax (current value: " SIZE_FORMAT ") and "
+          "restart.", MarkStackSizeMax);
     return;
   }