From aae292aab518b4e43ad78370b78d3541e3f116f5 Mon Sep 17 00:00:00 2001
From: Gliniak <Gliniak93@gmail.com>
Date: Mon, 16 Nov 2020 19:02:37 +0100
Subject: [PATCH] [Kernel/Memory] MmQueryAddressProtect - Check for
 protect_bits equals 0

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

diff --git a/src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc b/src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc
index 0c6fa0a4d..77d834695 100644
--- a/src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc
+++ b/src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc
@@ -401,6 +401,11 @@ DECLARE_XBOXKRNL_EXPORT2(MmQueryAddressProtect, kMemory, kImplemented,
 
 void MmSetAddressProtect(lpvoid_t base_address, dword_t region_size,
                          dword_t protect_bits) {
+  if (!protect_bits) {
+    XELOGE("MmSetAddressProtect: Failed due to incorrect protect_bits");
+    return;
+  }
+
   uint32_t protect = FromXdkProtectFlags(protect_bits);
   auto heap = kernel_memory()->LookupHeap(base_address);
   heap->Protect(base_address.guest_address(), region_size, protect);