From b029e0edcf356772c66190af843087f14c88b3f2 Mon Sep 17 00:00:00 2001
From: Simo Sorce <ssorce@redhat.com>
Date: Tue, 21 Apr 2009 03:08:37 -0400
Subject: [PATCH] Prevent reallocs of the talloc pool itself

---
 lib/talloc/talloc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/talloc/talloc.c b/lib/talloc/talloc.c
index 60a48ad8112..33cbfd7d268 100644
--- a/lib/talloc/talloc.c
+++ b/lib/talloc/talloc.c
@@ -1008,6 +1008,11 @@ void *_talloc_realloc(const void *context, void *ptr, size_t size, const char *n
 		return NULL;
 	}
 
+	/* don't let anybody try to realloc a talloc_pool */
+	if (unlikely(tc->flags & TALLOC_FLAG_POOL)) {
+		return NULL;
+	}
+
 	/* don't shrink if we have less than 1k to gain */
 	if ((size < tc->size) && ((tc->size - size) < 1024)) {
 		tc->size = size;
-- 
2.11.4.GIT