我在 DriverEntry 用 WRMSR 0x176 写入一个新的地址，在UnloadDriver 用 WRMSR 0x176 还原，还原必须降低IRQL,卸载驱动还原后，大概过1 2分钟就蓝屏了。
DUMP 是这样：
........
1: kd> !analyze -v
*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

PAGE_FAULT_IN_NONPAGED_AREA (50)
Invalid system memory was referenced.  This cannot be protected by try-except,
it must be protected by a Probe.  Typically the address is just plain bad or it
is pointing at freed memory.
Arguments:
Arg1: e9606fa8, memory referenced.
Arg2: 00000001, value 0 = read operation, 1 = write operation.
Arg3: 92ef6ffb, If non-zero, the instruction address which referenced the bad memory
        address.
Arg4: 00000002, (reserved)

Debugging Details:
------------------

Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbb70 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
PEB is paged out (Peb.Ldr = 7ffda00c).  Type ".hh dbgerr001" for details
PEB is paged out (Peb.Ldr = 7ffda00c).  Type ".hh dbgerr001" for details

WRITE_ADDRESS:  e9606fa8

FAULTING_IP:
+643e952f038bdef4
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
92ef6ffb ??              ???

MM_INTERNAL_CODE:  2

DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT

BUGCHECK_STR:  0x50

PROCESS_NAME:  Dbgview.exe

CURRENT_IRQL:  1

TRAP_FRAME:  b107bc5c -- (.trap 0xffffffffb107bc5c)
ErrCode = 00000002
eax=9296f468 ebx=8c606b48 ecx=00000000 edx=00010020 esi=8efdb390 edi=8ed913d0
eip=92ef6ffb esp=b107bcd0 ebp=b107bd1c iopl=0         ov up ei ng nz ac po nc
cs=0008  ss=0010  ds=0023  es=0023  fs=0030  gs=0000             efl=00010a92
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
92ef6ffb ??              ???
Page bbaf6 not present in the dump file. Type ".hh dbgerr004" for details
Resetting default scope

LAST_CONTROL_TRANSFER:  from 8c678aa8 to 8c6c586f

STACK_TEXT:  
b107bc44 8c678aa8 00000001 e9606fa8 00000000 nt!MmAccessFault+0x106
b107bc44 92ef6ffb 00000001 e9606fa8 00000000 nt!KiTrap0E+0xdc
WARNING: Frame IP not in any known module. Following frames may be wrong.
b107bccc 92f70c1b b107bd34 75b8a809 00411340 0x92ef6ffb
b107bd1c 92efd974 00000001 00000000 b107bd34 0x92f70c1b
b107bd34 778e7094 badb0d00 0260fed8 00000000 0x92efd974
b107bd38 badb0d00 0260fed8 00000000 00000000 0x778e7094
b107bd3c 0260fed8 00000000 00000000 00000000 0xbadb0d00
b107bd40 00000000 00000000 00000000 00000000 0x260fed8

STACK_COMMAND:  kb

FOLLOWUP_IP:
nt!KiTrap0E+dc
8c678aa8 85c0            test    eax,eax

SYMBOL_STACK_INDEX:  1

SYMBOL_NAME:  nt!KiTrap0E+dc

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: nt

IMAGE_NAME:  ntkrpamp.exe

DEBUG_FLR_IMAGE_TIMESTAMP:  5147d331

FAILURE_BUCKET_ID:  0x50_nt!KiTrap0E+dc

BUCKET_ID:  0x50_nt!KiTrap0E+dc

Followup: MachineOwner
是在搞不明白，求指点。
已解决，笔误造成，对不起让大家费脑了，抱歉。

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