From e388b74dbef83b27b41b032165356a9079431c67 Mon Sep 17 00:00:00 2001
From: "Dr. Chat" <arkolbed@gmail.com>
Date: Wed, 17 May 2017 04:44:48 -0500
Subject: [PATCH] BaseHeap::Release: Disallow freeing of 0x0

---
 src/xenia/memory.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/xenia/memory.cc b/src/xenia/memory.cc
index 3e559e188..1e93830ab 100644
--- a/src/xenia/memory.cc
+++ b/src/xenia/memory.cc
@@ -934,6 +934,11 @@ bool BaseHeap::Release(uint32_t base_address, uint32_t* out_region_size) {
     return false;
   }
 
+  if (heap_base_ == 0x00000000 && base_page_number == 0) {
+    XELOGE("BaseHeap::Release: Attempt to free 0!");
+    return false;
+  }
+
   if (out_region_size) {
     *out_region_size = (base_page_entry.region_page_count * page_size_);
   }