SoftPerfect RAM Disk 3.4.8, mounting RAM drive leads to "Assertion failed: Pfn1" in ntoskrnl/mm/freelist.c, / MmAllocatePagesForMdl

(ntoskrnl/mm/freelist.c:196) ARM3-DEBUG: Being called with bffff ffffffffffffffff 0 7d01000 3 0

*** Assertion failed: Pfn1

***   Source File: /srv/buildbot/worker_data/Build_GCCLin_x86/build/ntoskrnl/mm/freelist.c, line 320Break repeatedly, break Once, Ignore, terminate Process or terminate Thread (boipt)?

kdb:> b

Execute '.cxr F632358C' to dump contextEntered debugger on embedded INT3 at 0x0008:0x805AA7D2.kdb:> bt

Eip:

<ntoskrnl.exe:1aa7d2 (:0 (DbgUserBreakPoint))>

Frames:

<ntoskrnl.exe:ff30b (ntoskrnl/mm/freelist.c:320 (MiAllocatePagesForMdl))>

<ntoskrnl.exe:bcc64 (ntoskrnl/mm/ARM3/mdlsup.c:497 (MmAllocatePagesForMdl))>

<spvve.sys:e95b>