[ros-diffs] [akhaldi] 58851: [NTOSKRNL] * Make sure that BaseAddress is at 64-k boundary in NtMapViewOfSection(). Fixes a couple NtMapViewOfSection tests. * Brought to you by Zhan Jianyu (aka larmbr) with revi...

Author: akhaldi
Date: Thu Apr 25 15:54:45 2013
New Revision: 58851

URL: http://svn.reactos.org/svn/reactos?rev=58851&view=rev
Log:
[NTOSKRNL]
* Make sure that BaseAddress is at 64-k boundary in NtMapViewOfSection(). Fixes a couple
NtMapViewOfSection tests.
* Brought to you by Zhan Jianyu (aka larmbr) with review and improvement by Timo.
CORE-7118 #resolve #comment A slightly improved fix was committed in r58851. Thanks ;)

Modified:
    trunk/reactos/ntoskrnl/mm/ARM3/section.c

Modified: trunk/reactos/ntoskrnl/mm/ARM3/section.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/section.c…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/section.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/section.c [iso-8859-1] Thu Apr 25 15:54:45 2013
@@ -3040,6 +3040,13 @@
         return STATUS_INVALID_PAGE_PROTECTION;
     }
 
+    /* Check for non-allocation-granularity-aligned BaseAddress */
+    if (BaseAddress && (*BaseAddress != ALIGN_DOWN_POINTER_BY(*BaseAddress,
MM_VIRTMEM_GRANULARITY)))
+    {
+       DPRINT("BaseAddress is not at 64-kilobyte address boundary.");
+       return STATUS_MAPPED_ALIGNMENT;
+    }
+
     /* Now convert the protection mask into desired section access mask */
     DesiredAccess = MmMakeSectionAccess[ProtectionMask & 0x7];