fast/history/history_reload crashes when run multiple times in a row. I think it also causes subsequent tests to crash when run together with all the other tests. To reproduce, run-webkit-tests fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html fast/history/history_reload.html Running the test a single time with GurardMalloc does not crash.