diff --git a/compiler-rt/lib/gwp_asan/guarded_pool_allocator.cpp b/compiler-rt/lib/gwp_asan/guarded_pool_allocator.cpp
--- a/compiler-rt/lib/gwp_asan/guarded_pool_allocator.cpp
+++ b/compiler-rt/lib/gwp_asan/guarded_pool_allocator.cpp
@@ -148,6 +148,7 @@
                     State.PageSize));
     FreeSlots = nullptr;
   }
+  *getThreadLocals() = ThreadLocalPackedVariables();
 }
 
 void *GuardedPoolAllocator::allocate(size_t Size) {