diff --git a/runtime/gc/collector/concurrent_copying.cc b/runtime/gc/collector/concurrent_copying.cc
index 9428a0b..f23b3fd 100644
--- a/runtime/gc/collector/concurrent_copying.cc
+++ b/runtime/gc/collector/concurrent_copying.cc
@@ -2627,6 +2627,20 @@
   // the biggest memory range, thereby reducing the cost of this function.
   CaptureRssAtPeak();
 
+  // Sweep the malloc spaces before clearing the from space since the memory tool mode might
+  // access the object classes in the from space for dead objects.
+  {
+    WriterMutexLock mu(self, *Locks::heap_bitmap_lock_);
+    Sweep(/* swap_bitmaps= */ false);
+    SwapBitmaps();
+    heap_->UnBindBitmaps();
+
+    // The bitmap was cleared at the start of the GC, there is nothing we need to do here.
+    DCHECK(region_space_bitmap_ != nullptr);
+    region_space_bitmap_ = nullptr;
+  }
+
+
   {
     // Record freed objects.
     TimingLogger::ScopedTiming split2("RecordFree", GetTimings());
@@ -2689,17 +2703,6 @@
     reclaimed_bytes_ratio_sum_ += reclaimed_bytes_ratio;
   }
 
-  {
-    WriterMutexLock mu(self, *Locks::heap_bitmap_lock_);
-    Sweep(/* swap_bitmaps= */ false);
-    SwapBitmaps();
-    heap_->UnBindBitmaps();
-
-    // The bitmap was cleared at the start of the GC, there is nothing we need to do here.
-    DCHECK(region_space_bitmap_ != nullptr);
-    region_space_bitmap_ = nullptr;
-  }
-
   CheckEmptyMarkStack();
 
   if (heap_->dump_region_info_after_gc_) {