diff --git a/compiler-rt/lib/scudo/standalone/combined.h b/compiler-rt/lib/scudo/standalone/combined.h
--- a/compiler-rt/lib/scudo/standalone/combined.h
+++ b/compiler-rt/lib/scudo/standalone/combined.h
@@ -721,6 +721,7 @@
   void disableMemoryTagging() { Primary.disableMemoryTagging(); }
 
   void setTrackAllocationStacks(bool Track) {
+    initThreadMaybe();
     Options.TrackAllocationStacks = Track;
   }