1 files changed, 4 insertions, 2 deletions
diff --git a/libsanitizer/sanitizer_common/sanitizer_quarantine.h b/libsanitizer/sanitizer_common/sanitizer_quarantine.h
index a635871be45..9e9268f2a5d 100644
--- a/libsanitizer/sanitizer_common/sanitizer_quarantine.h
+++ b/libsanitizer/sanitizer_common/sanitizer_quarantine.h
@@ -99,10 +99,12 @@ class Quarantine {
   void NOINLINE DoRecycle(Cache *c, Callback cb) {
     while (QuarantineBatch *b = c->DequeueBatch()) {
       const uptr kPrefetch = 16;
+      CHECK(kPrefetch <= ARRAY_SIZE(b->batch));
       for (uptr i = 0; i < kPrefetch; i++)
         PREFETCH(b->batch[i]);
-      for (uptr i = 0; i < b->count; i++) {
-        PREFETCH(b->batch[i + kPrefetch]);
+      for (uptr i = 0, count = b->count; i < count; i++) {
+        if (i + kPrefetch < count)
+          PREFETCH(b->batch[i + kPrefetch]);
         cb.Recycle((Node*)b->batch[i]);
       }
       cb.Deallocate(b);