codec.cc

diff --git a/lib/ui/painting/codec.cc b/lib/ui/painting/codec.cc
index b181837e3..fc31f3f32 100644
--- a/lib/ui/painting/codec.cc
+++ b/lib/ui/painting/codec.cc
@@ -4,6 +4,8 @@
 
 #include "flutter/lib/ui/painting/codec.h"
 
+#include <sys/mman.h>
+
 #include <variant>
 
 #include "flutter/common/task_runners.h"
@@ -129,7 +131,16 @@ static void InstantiateImageCodec(Dart_NativeArguments args) {
       Dart_SetReturnValue(args, exception);
       return;
     }
-    buffer = SkData::MakeWithCopy(list.data(), list.num_elements());
+    auto allocation = ::mmap(nullptr, list.num_elements(),
+                             PROT_READ | PROT_WRITE, MAP_ANONYMOUS, -1, 0);
+    ::memcpy(allocation, list.data(), list.num_elements());
+    auto size = new int(list.num_elements());
+    SkData::ReleaseProc proc = [](const void* ptr, void* context) {
+      int* size = reinterpret_cast<int*>(context);
+      ::munmap(const_cast<void*>(ptr), *size);
+      delete size;
+    };
+    buffer = SkData::MakeWithProc(allocation, list.num_elements(), proc, size);
   }
 
   if (image_info) {