[security] refine _get_program_cache_key (#61827) (#61896)

* security, refine _get_program_cache_key

Author: wanghuancoder

python/paddle/base/executor.py

@@ -682,15 +682,19 @@ def _get_varname_from_block(block):
  )
 
 
-def _get_program_cache_key(feed, fetch_list):
+def _get_feed_fetch_var_names(feed, fetch_list):
  feed_var_names = []
  if isinstance(feed, dict):
  feed_var_names = list(feed.keys())
  elif isinstance(feed, (list, tuple)):
  for i, each in enumerate(feed):
  feed_var_names += list(each.keys())
  fetch_var_names = list(map(_to_name_str, fetch_list))
- return str(feed_var_names + fetch_var_names)
+ return feed_var_names + fetch_var_names
+
+
+def _get_program_cache_key(feed, fetch_list):
+ return str(_get_feed_fetch_var_names(feed, fetch_list))
 
 
 def _as_lodtensor(data, place, dtype=None):
@@ -1026,7 +1030,7 @@ def _get_program_and_executor(self, cached_data):
 
  if enable_inplace or enable_addto:
  # inplace should skip feed and fetch var
- skip_var_names = eval(_get_program_cache_key(feed, fetch_list))
+ skip_var_names = _get_feed_fetch_var_names(feed, fetch_list)
  _apply_inplace_addto_pass(
  program, enable_inplace, enable_addto, skip_var_names
  )