[tfaber] 71398: [NTOS:EX] - Use the calling thread instead of the passed-in thread to validate APC status in ExReleaseResourceForThreadLite. The latter can be user-set and might not be a KTHREAD at...

Author: tfaber
Date: Wed May 25 10:27:17 2016
New Revision: 71398

URL: http://svn.reactos.org/svn/reactos?rev=71398&view=rev
Log:
[NTOS:EX]
- Use the calling thread instead of the passed-in thread to validate APC status in
ExReleaseResourceForThreadLite. The latter can be user-set and might not be a KTHREAD at
all.
CORE-11315 #resolve

Modified:
    trunk/reactos/ntoskrnl/ex/resource.c
    trunk/rostests/kmtests/ntos_ex/ExResource.c

Modified: trunk/reactos/ntoskrnl/ex/resource.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ex/resource.c?rev…
==============================================================================
--- trunk/reactos/ntoskrnl/ex/resource.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/ex/resource.c	[iso-8859-1] Wed May 25 10:27:17 2016
@@ -1817,7 +1817,7 @@
 ExReleaseResourceLite(IN PERESOURCE Resource)
 {
     /* Just call the For-Thread function */
-    ExReleaseResourceForThreadLite(Resource, (ERESOURCE_THREAD)PsGetCurrentThread());
+    ExReleaseResourceForThreadLite(Resource, ExGetCurrentResourceThread());
 }
 
 /*++
@@ -1855,7 +1855,7 @@
 
     /* Sanity checks */
     ExpVerifyResource(Resource);
-    ExpCheckForApcsDisabled(LockHandle.OldIrql, Resource, (PKTHREAD)Thread);
+    ExpCheckForApcsDisabled(LockHandle.OldIrql, Resource, KeGetCurrentThread());
 
     /* Check if it's exclusively owned */
     if (IsOwnedExclusive(Resource))

Modified: trunk/rostests/kmtests/ntos_ex/ExResource.c
URL:
http://svn.reactos.org/svn/reactos/trunk/rostests/kmtests/ntos_ex/ExResourc…
==============================================================================
--- trunk/rostests/kmtests/ntos_ex/ExResource.c	[iso-8859-1] (original)
+++ trunk/rostests/kmtests/ntos_ex/ExResource.c	[iso-8859-1] Wed May 25 10:27:17 2016
@@ -505,6 +505,10 @@
 
     KeEnterCriticalRegion();
     ok_bool_true(ExAcquireResourceExclusiveLite(Res, FALSE),
"ExAcquireResourceExclusiveLite returned");
+    ExSetResourceOwnerPointer(Res, (PVOID)(ULONG_PTR)3);
+    ExReleaseResourceForThreadLite(Res, 3);
+
+    ok_bool_true(ExAcquireResourceExclusiveLite(Res, FALSE),
"ExAcquireResourceExclusiveLite returned");
     ExSetResourceOwnerPointer(Res, (PVOID)((ULONG_PTR)Res | 3));
     KeLeaveCriticalRegion();