crash while unloading a driver (cpuz)

Entered debugger on last-chance exception (Exception Code: 0xc0000005) (Page Fault)
Memory at 0x00000018 could not be read: Page not present.
kdb:> bt
←[7h♣Eip:
<NTOSKRNL.EXE:6c1fd (ntoskrnl/mm/sysldr.c:686 (MmUnloadSystemImage@4))>
Frames:
<NTOSKRNL.EXE:3eba0 (ntoskrnl/io/iomgr/driver.c:1121 (IopUnloadDriver@8))>
<NTOSKRNL.EXE:3ed45 (ntoskrnl/io/iomgr/driver.c:1831 (NtUnloadDriver@4))>
<NTOSKRNL.EXE:968ba (ntoskrnl/ke/i386/trap.s:244 (KiFastCallEntry))>
<ntdll.dll:5dea>
<services.exe:2367>
<services.exe:4baf>
<services.exe:bd54>
<rpcrt4.dll:1c255>
<rpcrt4.dll:1c4aa>
<kernel32.dll:2260b>
<ntdll.dll:162bf>
<ntdll.dll:15dfe>
<00000000>
kdb:>