diff --git a/arch_init.c b/arch_init.c
index 6089c5338660..98e2bc6f5593 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -293,8 +293,7 @@ static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
 
     if (!cache_is_cached(XBZRLE.cache, current_addr)) {
         if (!last_stage) {
-            cache_insert(XBZRLE.cache, current_addr,
-                         g_memdup(current_data, TARGET_PAGE_SIZE));
+            cache_insert(XBZRLE.cache, current_addr, current_data);
         }
         acct_info.xbzrle_cache_miss++;
         return -1;
diff --git a/include/migration/page_cache.h b/include/migration/page_cache.h
index 3839ac7726f0..87894fea9f11 100644
--- a/include/migration/page_cache.h
+++ b/include/migration/page_cache.h
@@ -57,7 +57,8 @@ bool cache_is_cached(const PageCache *cache, uint64_t addr);
 uint8_t *get_cached_data(const PageCache *cache, uint64_t addr);
 
 /**
- * cache_insert: insert the page into the cache. the previous value will be overwritten
+ * cache_insert: insert the page into the cache. the page cache
+ * will dup the data on insert. the previous value will be overwritten
  *
  * @cache pointer to the PageCache struct
  * @addr: page address
diff --git a/page_cache.c b/page_cache.c
index 809dadc7ebf4..938a79c9ea79 100644
--- a/page_cache.c
+++ b/page_cache.c
@@ -159,7 +159,7 @@ void cache_insert(PageCache *cache, uint64_t addr, uint8_t *pdata)
         cache->num_items++;
     }
 
-    it->it_data = pdata;
+    it->it_data = g_memdup(pdata, cache->page_size);
     it->it_age = ++cache->max_item_age;
     it->it_addr = addr;
 }