--- a/Modules/_ctypes/malloc_closure.c
+++ b/Modules/_ctypes/malloc_closure.c
@@ -75,7 +75,18 @@ static void more_core(void)
                         -1,
                         0);
     if (item == (void *)MAP_FAILED)
-        return;
+        if (errno != EPERM)
+            return;
+        else {
+            item = (ITEM *)mmap(NULL,
+                                count * sizeof(ITEM),
+                                PROT_READ | PROT_WRITE,
+                                MAP_PRIVATE | MAP_ANONYMOUS,
+                                -1,
+                                0);
+            if (item == (void *)MAP_FAILED;
+                return;
+        }
 #endif
 
 #ifdef MALLOC_CLOSURE_DEBUG