From e39b696116dee0ae3e588693ecac6f78810e404e Mon Sep 17 00:00:00 2001
From: Art Yerkes <art.yerkes@gmail.com>
Date: Wed, 6 Jun 2012 21:22:19 +0000
Subject: [PATCH] [NTOSKRNL] Don't crash when unmapping a kernel-space image
 section, due to dereferencing a NULL Process.

svn path=/trunk/; revision=56701
---
 reactos/ntoskrnl/mm/section.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/reactos/ntoskrnl/mm/section.c b/reactos/ntoskrnl/mm/section.c
index 2fb1f4ca674..a974e9be25d 100644
--- a/reactos/ntoskrnl/mm/section.c
+++ b/reactos/ntoskrnl/mm/section.c
@@ -4105,7 +4105,7 @@ MiRosUnmapViewOfSection(IN PEPROCESS Process,
 
    ASSERT(Process);
 
-   AddressSpace = &Process->Vm;
+   AddressSpace = Process ? &Process->Vm : MmGetKernelAddressSpace();
 
    MmLockAddressSpace(AddressSpace);
    MemoryArea = MmLocateMemoryAreaByAddress(AddressSpace,