[tsan] Add a max VM address check for Darwin/AArch64

[dvyukov]

lib/tsan/rtl/tsan_platform_mac.cc

235

This can provide a better error message without an unnecessary stack trace, but up to you.

if (max_vm != kHiAppMemEnd) {
  Printf("ThreadSanitizer: unsupported vm address limit %p, expect %p\n", max_vm, kHiAppMemEnd);
  Die();
}

lib/tsan/rtl/tsan_platform_mac.cc

static void my_pthread_introspection_hook(unsigned int event, pthread_t thread,
   }
 
   if (prev_pthread_introspection_hook != nullptr)
     prev_pthread_introspection_hook(event, thread, addr, size);
 }
 #endif
 
 void InitializePlatformEarly() {
+#if defined(__aarch64__)
+  uptr max_vm = GetMaxVirtualAddress() + 1;
+  if (max_vm > kHiAppMemEnd) {
+    CHECK(0 && "vm address limit too high");
+  } else if (max_vm < kHiAppMemEnd) {
+    CHECK(0 && "vm address limit too low");
+  }
+#endif
 }
 
 void InitializePlatform() {
   DisableCoreDumperIfNecessary();
 #if !SANITIZER_GO
   CheckAndProtect();
 
   CHECK_EQ(main_thread_identity, 0);