Index: lib/asan/asan_rtl.cc
===================================================================
--- lib/asan/asan_rtl.cc
+++ lib/asan/asan_rtl.cc
@@ -536,6 +536,9 @@
   if (curr_thread) {
     top = curr_thread->stack_top();
     bottom = ((uptr)&local_stack - PageSize) & ~(PageSize - 1);
+  } else if (SANITIZER_RTEMS) {
+    // Give up On RTEMS.
+    return;
   } else {
     CHECK(!SANITIZER_FUCHSIA);
     // If we haven't seen this thread, try asking the OS for stack bounds.
Index: lib/asan/asan_thread.cc
===================================================================
--- lib/asan/asan_thread.cc
+++ lib/asan/asan_thread.cc
@@ -394,6 +394,9 @@
 }
 
 AsanThread *GetCurrentThread() {
+  if (SANITIZER_RTEMS && !asan_inited)
+    return nullptr;
+
   AsanThreadContext *context =
       reinterpret_cast<AsanThreadContext *>(AsanTSDGet());
   if (!context) {