diff --git a/compiler-rt/test/tsan/bench_threads.cpp b/compiler-rt/test/tsan/bench_threads.cpp
--- a/compiler-rt/test/tsan/bench_threads.cpp
+++ b/compiler-rt/test/tsan/bench_threads.cpp
@@ -4,6 +4,11 @@
 // bench.h needs pthread barriers which are not available on OS X
 // UNSUPPORTED: darwin
 
+// aarch64 fails with:
+// CHECK failed: tsan_rtl.cpp:327 "((addr + size)) <= ((TraceMemEnd()))"
+// TODO: try to re-enable when D112603 is landed.
+// XFAIL: aarch64
+
 #include "bench.h"
 
 void *nop_thread(void *arg) {