wine-staging/patches/ntdll-NtUnmapViewOfSection/0001-ntdll-Don-t-fail-in-NtUnmapViewOfSection-when-trying.patch

From 3748f23616bf25fb2f599f7896d8437614918ce0 Mon Sep 17 00:00:00 2001
From: Sebastian Lackner <sebastian@fds-team.de>
Date: Mon, 9 Oct 2017 14:18:30 +0200
Subject: ntdll: Don't fail in NtUnmapViewOfSection when trying to unmap
 builtin view.

Fixes a regression introduced in a557934c76c0e0bed6b73e5c8f79a0df059ff2de.
---
 dlls/ntdll/virtual.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/dlls/ntdll/virtual.c b/dlls/ntdll/virtual.c
index f33579840a2..04862237bb9 100644
--- a/dlls/ntdll/virtual.c
+++ b/dlls/ntdll/virtual.c
@@ -3071,13 +3071,21 @@ NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
     server_enter_uninterrupted_section( &csVirtual, &sigset );
     if ((view = VIRTUAL_FindView( addr, 0 )) && !is_view_valloc( view ))
     {
-        SERVER_START_REQ( unmap_view )
+        if (view->protect & VPROT_SYSTEM)
         {
-            req->base = wine_server_client_ptr( view->base );
-            status = wine_server_call( req );
+            delete_view( view );
+            status = STATUS_SUCCESS;
+        }
+        else
+        {
+            SERVER_START_REQ( unmap_view )
+            {
+                req->base = wine_server_client_ptr( view->base );
+                status = wine_server_call( req );
+            }
+            SERVER_END_REQ;
+            if (!status) delete_view( view );
         }
-        SERVER_END_REQ;
-        if (!status) delete_view( view );
     }
     server_leave_uninterrupted_section( &csVirtual, &sigset );
     return status;
-- 
2.14.1