Thanks Radikal
Here is the result of windbg:
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: fff7fff8, memory referenced.
Arg2: 00000000, value 0 = read operation, 1 = write operation.
Arg3: 80551211, If non-zero, the instruction address which referenced the bad memory
address.
Arg4: 00000000, (reserved)
Debugging Details:
------------------
Could not read faulting driver name
READ_ADDRESS: GetPointerFromAddress: unable to read from 805630e8
GetPointerFromAddress: unable to read from 805630e0
GetUlongFromAddress: unable to read from 80567ce8
fff7fff8
FAULTING_IP:
nt!ExFreePoolWithTag+23a
80551211 668b4efa mov cx,word ptr [esi-6]
MM_INTERNAL_CODE: 0
CUSTOMER_CRASH_COUNT: 6
DEFAULT_BUCKET_ID: COMMON_SYSTEM_FAULT
BUGCHECK_STR: 0x50
PROCESS_NAME: explorer.exe
ANALYSIS_VERSION: 6.3.9600.17237 (debuggers(dbg).140716-0327) x86fre
LAST_CONTROL_TRANSFER: from 80585717 to 80551211
STACK_TEXT:
aa401c3c 80585717 fff7fffe 00000000 e2e01cd8 nt!ExFreePoolWithTag+0x23a
aa401c58 805db77e e2e06828 e2e01cd8 e100dad4 nt!CmpCleanUpKcbValueCache+0x51
aa401c6c 805db82a e2e06828 e2667b60 80572e7c nt!CmpCleanUpKcbCacheWithLock+0x19
aa401c78 80572e7c aa401c8c 80572dbd e2e01cd8 nt!CmpGetDelayedCloseIndex+0x16
aa401c80 80572dbd e2e01cd8 aa401c98 80572d86 nt!CmpAddToDelayedClose+0xa
aa401c8c 80572d86 e2e01cd8 aa401cb0 80573475 nt!CmpDereferenceKeyControlBlockWithLock+0x50
aa401c98 80573475 e2e01cd8 00000000 e2cd9ea0 nt!CmpDereferenceKeyControlBlock+0x12
aa401cb0 8056d73d e2cd9eb8 00000000 e2cd9ea0 nt!CmpDeleteKeyObject+0x92
aa401ccc 804e1947 e2cd9eb8 00000000 000004e2 nt!ObpRemoveObjectRoutine+0xe0
aa401ce4 8056fba7 81598298 e29fa430 81585ba0 nt!ObfDereferenceObject+0x4c
aa401cfc 8056fac5 e29fa430 e2cd9eb8 000004e2 nt!ObpCloseHandleTableEntry+0x155
aa401d44 8056fb0f 000004e2 00000001 00000000 nt!ObpCloseHandle+0x87
aa401d58 804dd98f 000004e2 019df6fc 7c91e4f4 nt!NtClose+0x1d
aa401d58 7c91e4f4 000004e2 019df6fc 7c91e4f4 nt!KiFastCallEntry+0xfc
WARNING: Frame IP not in any known module. Following frames may be wrong.
019df6fc 00000000 00000000 00000000 00000000 0x7c91e4f4
STACK_COMMAND: kb
FOLLOWUP_IP:
nt!ExFreePoolWithTag+23a
80551211 668b4efa mov cx,word ptr [esi-6]
SYMBOL_STACK_INDEX: 0
SYMBOL_NAME: nt!ExFreePoolWithTag+23a
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: nt
IMAGE_NAME: ntkrnlmp.exe
DEBUG_FLR_IMAGE_TIMESTAMP: 48025de7
IMAGE_VERSION: 5.1.2600.5512
FAILURE_BUCKET_ID: 0x50_nt!ExFreePoolWithTag+23a
BUCKET_ID: 0x50_nt!ExFreePoolWithTag+23a
ANALYSIS_SOURCE: KM
FAILURE_ID_HASH_STRING: km:0x50_nt!exfreepoolwithtag+23a
FAILURE_ID_HASH: {772a6cc1-5eb2-1276-2b6d-082fdec5b7df}
Followup: MachineOwner
---------
Do you see any more? I will try memtest.