Merge "Blacklist timing out test on gcstress/debug/host."
diff --git a/tools/libcore_gcstress_debug_failures.txt b/tools/libcore_gcstress_debug_failures.txt
index 25a4c82..9009a4e 100644
--- a/tools/libcore_gcstress_debug_failures.txt
+++ b/tools/libcore_gcstress_debug_failures.txt
@@ -32,6 +32,12 @@
         ]
 },
 {
+  description: "Timeouts on host with gcstress and debug.",
+  result: EXEC_FAILED,
+  modes: [host],
+  names: ["jsr166.StampedLockTest#testWriteAfterReadLock"]
+},
+{
   description: "Sometimes times out with gcstress and debug.",
   result: EXEC_FAILED,
   bug: 78228743,