From dedac52731bd4085a71c0010454c9804b15be80f Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Mon, 13 May 2013 19:55:40 -0500
Subject: [PATCH] prevent double free in cleanup code (#17968)

---
 Modules/posixmodule.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 3e5e58045fd..a351caeddc7 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -10627,6 +10627,7 @@ posix_listxattr(PyObject *self, PyObject *args, PyObject *kwargs)
         if (length < 0) {
             if (errno == ERANGE) {
                 PyMem_FREE(buffer);
+                buffer = NULL;
                 continue;
             }
             path_error("listxattr", &path);