diff --git a/compiler-rt/lib/hwasan/hwasan_allocator.h b/compiler-rt/lib/hwasan/hwasan_allocator.h
--- a/compiler-rt/lib/hwasan/hwasan_allocator.h
+++ b/compiler-rt/lib/hwasan/hwasan_allocator.h
@@ -88,6 +88,7 @@
 typedef CombinedAllocator<PrimaryAllocator> Allocator;
 typedef Allocator::AllocatorCache AllocatorCache;
 
+void AllocatorThreadStart(AllocatorCache *cache);
 void AllocatorThreadFinish(AllocatorCache *cache);
 
 class HwasanChunkView {
diff --git a/compiler-rt/lib/hwasan/hwasan_allocator.cpp b/compiler-rt/lib/hwasan/hwasan_allocator.cpp
--- a/compiler-rt/lib/hwasan/hwasan_allocator.cpp
+++ b/compiler-rt/lib/hwasan/hwasan_allocator.cpp
@@ -149,8 +149,9 @@
   atomic_store_relaxed(&hwasan_allocator_tagging_enabled,
                        !flags()->disable_allocator_tagging);
   SetAllocatorMayReturnNull(common_flags()->allocator_may_return_null);
-  allocator.Init(common_flags()->allocator_release_to_os_interval_ms,
-                 GetAliasRegionStart());
+  allocator.InitLinkerInitialized(
+      common_flags()->allocator_release_to_os_interval_ms,
+      GetAliasRegionStart());
   for (uptr i = 0; i < sizeof(tail_magic); i++)
     tail_magic[i] = GetCurrentThread()->GenerateRandomTag();
   if (common_flags()->max_allocation_size_mb) {
@@ -165,8 +166,11 @@
 
 void HwasanAllocatorUnlock() { allocator.ForceUnlock(); }
 
+void AllocatorThreadStart(AllocatorCache *cache) { allocator.InitCache(cache); }
+
 void AllocatorThreadFinish(AllocatorCache *cache) {
   allocator.SwallowCache(cache);
+  allocator.DestroyCache(cache);
 }
 
 static uptr TaggedSize(uptr size) {
diff --git a/compiler-rt/lib/hwasan/hwasan_thread.cpp b/compiler-rt/lib/hwasan/hwasan_thread.cpp
--- a/compiler-rt/lib/hwasan/hwasan_thread.cpp
+++ b/compiler-rt/lib/hwasan/hwasan_thread.cpp
@@ -58,6 +58,7 @@
 #endif
   InitStackAndTls(state);
   dtls_ = DTLS_Get();
+  AllocatorThreadStart(allocator_cache());
 }
 
 void Thread::InitStackRingBuffer(uptr stack_buffer_start,
diff --git a/compiler-rt/test/sanitizer_common/TestCases/allocator_interface.cpp b/compiler-rt/test/sanitizer_common/TestCases/allocator_interface.cpp
--- a/compiler-rt/test/sanitizer_common/TestCases/allocator_interface.cpp
+++ b/compiler-rt/test/sanitizer_common/TestCases/allocator_interface.cpp
@@ -4,9 +4,6 @@
 // No allocator.
 // UNSUPPORTED: ubsan
 
-// FIXME: implementation is incomplete.
-// XFAIL: hwasan
-
 #include <assert.h>
 #include <sanitizer/allocator_interface.h>
 #include <stdio.h>