diff --git a/tests/libs/testbinary_is_stack_mte.cpp b/tests/libs/testbinary_is_stack_mte.cpp
index d8074d5..0cdc466 100644
--- a/tests/libs/testbinary_is_stack_mte.cpp
+++ b/tests/libs/testbinary_is_stack_mte.cpp
@@ -36,7 +36,9 @@
 #if defined(__BIONIC__) && defined(__aarch64__)
 
 extern "C" int main(int, char**) {
-  int ret = is_stack_mte_on() ? 0 : 1;
+  void* mte_tls_ptr = mte_tls();
+  *reinterpret_cast<uintptr_t*>(mte_tls_ptr) = 1;
+  int ret = is_stack_mte_on() && mte_tls_ptr != nullptr ? 0 : 1;
   printf("RAN\n");
   return ret;
 }
diff --git a/tests/libs/testbinary_is_stack_mte_after_dlopen.cpp b/tests/libs/testbinary_is_stack_mte_after_dlopen.cpp
index 937ac4c..35af8f4 100644
--- a/tests/libs/testbinary_is_stack_mte_after_dlopen.cpp
+++ b/tests/libs/testbinary_is_stack_mte_after_dlopen.cpp
@@ -96,6 +96,7 @@
   State state = kInit;
 
   bool is_early_thread_mte_on = false;
+  void* early_thread_mte_tls = nullptr;
   std::thread early_th([&] {
     {
       std::lock_guard lk(m);
@@ -107,6 +108,8 @@
       cv.wait(lk, [&] { return state == kStackRemapped; });
     }
     is_early_thread_mte_on = is_stack_mte_on();
+    early_thread_mte_tls = mte_tls();
+    *reinterpret_cast<uintptr_t*>(early_thread_mte_tls) = 1;
   });
   {
     std::unique_lock lk(m);
@@ -120,6 +123,7 @@
   cv.notify_one();
   CHECK(handle != nullptr);
   CHECK(is_stack_mte_on());
+  CHECK(mte_tls() != nullptr);
 
   bool new_stack_page_mte_on = false;
   uintptr_t low;
@@ -129,11 +133,18 @@
   CHECK(new_stack_page_mte_on);
 
   bool is_late_thread_mte_on = false;
-  std::thread late_th([&] { is_late_thread_mte_on = is_stack_mte_on(); });
+  void* late_thread_mte_tls = nullptr;
+  std::thread late_th([&] {
+    is_late_thread_mte_on = is_stack_mte_on();
+    late_thread_mte_tls = mte_tls();
+    *reinterpret_cast<uintptr_t*>(late_thread_mte_tls) = 1;
+  });
   late_th.join();
   early_th.join();
   CHECK(is_late_thread_mte_on);
   CHECK(is_early_thread_mte_on);
+  CHECK(late_thread_mte_tls != nullptr);
+  CHECK(early_thread_mte_tls != nullptr);
   printf("RAN\n");
   return 0;
 }
diff --git a/tests/mte_utils.h b/tests/mte_utils.h
index 6e8385c..020faec 100644
--- a/tests/mte_utils.h
+++ b/tests/mte_utils.h
@@ -40,4 +40,10 @@
   return p == p_cpy;
 }
 
+static void* mte_tls() {
+  void** dst;
+  __asm__("mrs %0, TPIDR_EL0" : "=r"(dst) :);
+  return dst[-3];
+}
+
 #endif
diff --git a/tests/struct_layout_test.cpp b/tests/struct_layout_test.cpp
index 0123ed9..1f04344 100644
--- a/tests/struct_layout_test.cpp
+++ b/tests/struct_layout_test.cpp
@@ -30,7 +30,7 @@
 #define CHECK_OFFSET(name, field, offset) \
     check_offset(#name, #field, offsetof(name, field), offset);
 #ifdef __LP64__
-  CHECK_SIZE(pthread_internal_t, 776);
+  CHECK_SIZE(pthread_internal_t, 816);
   CHECK_OFFSET(pthread_internal_t, next, 0);
   CHECK_OFFSET(pthread_internal_t, prev, 8);
   CHECK_OFFSET(pthread_internal_t, tid, 16);
@@ -55,6 +55,8 @@
   CHECK_OFFSET(pthread_internal_t, dlerror_buffer, 248);
   CHECK_OFFSET(pthread_internal_t, bionic_tls, 760);
   CHECK_OFFSET(pthread_internal_t, errno_value, 768);
+  CHECK_OFFSET(pthread_internal_t, bionic_tcb, 776);
+  CHECK_OFFSET(pthread_internal_t, stack_mte_ringbuffer_vma_name_buffer, 784);
   CHECK_SIZE(bionic_tls, 12200);
   CHECK_OFFSET(bionic_tls, key_data, 0);
   CHECK_OFFSET(bionic_tls, locale, 2080);
@@ -72,7 +74,7 @@
   CHECK_OFFSET(bionic_tls, bionic_systrace_disabled, 12193);
   CHECK_OFFSET(bionic_tls, padding, 12194);
 #else
-  CHECK_SIZE(pthread_internal_t, 668);
+  CHECK_SIZE(pthread_internal_t, 704);
   CHECK_OFFSET(pthread_internal_t, next, 0);
   CHECK_OFFSET(pthread_internal_t, prev, 4);
   CHECK_OFFSET(pthread_internal_t, tid, 8);
@@ -97,6 +99,8 @@
   CHECK_OFFSET(pthread_internal_t, dlerror_buffer, 148);
   CHECK_OFFSET(pthread_internal_t, bionic_tls, 660);
   CHECK_OFFSET(pthread_internal_t, errno_value, 664);
+  CHECK_OFFSET(pthread_internal_t, bionic_tcb, 668);
+  CHECK_OFFSET(pthread_internal_t, stack_mte_ringbuffer_vma_name_buffer, 672);
   CHECK_SIZE(bionic_tls, 11080);
   CHECK_OFFSET(bionic_tls, key_data, 0);
   CHECK_OFFSET(bionic_tls, locale, 1040);