diff --git a/compiler-rt/lib/asan/tests/asan_test.cc b/compiler-rt/lib/asan/tests/asan_test.cc
index 425e7fc9c4c1..31215cf5661c 100644
--- a/compiler-rt/lib/asan/tests/asan_test.cc
+++ b/compiler-rt/lib/asan/tests/asan_test.cc
@@ -337,8 +337,9 @@ void *ManyThreadsWorker(void *a) {
   return 0;
 }
 
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__powerpc64__)
 // FIXME: Infinite loop in AArch64 (PR24389).
+// FIXME: Also occasional hang on powerpc.  Maybe same problem as on AArch64?
 TEST(AddressSanitizer, ManyThreadsTest) {
   const size_t kNumThreads =
       (SANITIZER_WORDSIZE == 32 || ASAN_AVOID_EXPENSIVE_TESTS) ? 30 : 1000;