Index: drivers/network/ndis/ndis/memory.c
===================================================================
--- drivers/network/ndis/ndis/memory.c	(revision 40713)
+++ drivers/network/ndis/ndis/memory.c	(working copy)
@@ -241,8 +241,15 @@
   Memory->VirtualAddress = VirtualAddress;
   Memory->Cached = Cached;
 
-  PsCreateSystemThread(&ThreadHandle, THREAD_ALL_ACCESS, 0, 0, 0, NdisMFreeSharedMemoryPassive, Memory);
-  ZwClose(ThreadHandle);
+  if (KeGetCurrentIrql()==PASSIVE_LEVEL)
+  {
+     NdisMFreeSharedMemoryPassive(Memory);
+  }
+  else
+  {
+     PsCreateSystemThread(&ThreadHandle, THREAD_ALL_ACCESS, 0, 0, 0, NdisMFreeSharedMemoryPassive, Memory);
+     ZwClose(ThreadHandle);
+  }
 }
 
 VOID
@@ -309,8 +316,15 @@
   Memory->Adapter = &Adapter->NdisMiniportBlock;
   Memory->Context = Context;
 
-  PsCreateSystemThread(&ThreadHandle, THREAD_ALL_ACCESS, 0, 0, 0, NdisMAllocateSharedMemoryPassive, Memory);
-  ZwClose(ThreadHandle);
+  if (KeGetCurrentIrql()==PASSIVE_LEVEL)
+  {
+     NdisMAllocateSharedMemoryPassive(Memory);
+  }
+  else
+  {
+     PsCreateSystemThread(&ThreadHandle, THREAD_ALL_ACCESS, 0, 0, 0, NdisMAllocateSharedMemoryPassive, Memory);
+     ZwClose(ThreadHandle);
+  }
 
   return NDIS_STATUS_PENDING;
 }