[tfaber] 60502: [NTOS:MM] - Print some debug information on assertion failures in MiDecrementReferenceCount. CORE-6690

Author: tfaber
Date: Tue Oct  1 17:51:38 2013
New Revision: 60502

URL: http://svn.reactos.org/svn/reactos?rev=60502&view=rev
Log:
[NTOS:MM]
- Print some debug information on assertion failures in MiDecrementReferenceCount.
CORE-6690

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

Modified: trunk/reactos/ntoskrnl/mm/ARM3/pfnlist.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/pfnlist.c?...
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/pfnlist.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/pfnlist.c	[iso-8859-1] Tue Oct  1 17:51:38 2013
@@ -1308,9 +1308,18 @@
     ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);

/* Sanity checks on the page */
-    ASSERT(PageFrameIndex < MmHighestPhysicalPage);
-    ASSERT(Pfn1 == MI_PFN_ELEMENT(PageFrameIndex));
-    ASSERT(Pfn1->u3.e2.ReferenceCount != 0);
+    if (PageFrameIndex >= MmHighestPhysicalPage ||
+        Pfn1 != MI_PFN_ELEMENT(PageFrameIndex) ||
+        Pfn1->u3.e2.ReferenceCount == 0 ||
+        Pfn1->u3.e2.ReferenceCount >= 2500)
+    {
+        DPRINT1("PageFrameIndex=0x%lx, MmHighestPhysicalPage=0x%lx\n", PageFrameIndex, MmHighestPhysicalPage);
+        DPRINT1("Pfn1=%p, Element=%p, RefCount=%u\n", Pfn1, MI_PFN_ELEMENT(PageFrameIndex), Pfn1->u3.e2.ReferenceCount);
+        ASSERT(PageFrameIndex < MmHighestPhysicalPage);
+        ASSERT(Pfn1 == MI_PFN_ELEMENT(PageFrameIndex));
+        ASSERT(Pfn1->u3.e2.ReferenceCount != 0);
+        ASSERT(Pfn1->u3.e2.ReferenceCount < 2500);
+    }

/* Dereference the page, bail out if it's still alive */
     InterlockedDecrement16((PSHORT)&Pfn1->u3.e2.ReferenceCount);