BSOD and system reboot with error 0x19_21

Dear all,

Yesterday I've faced problem with BSOD and automatic server restart.
In EventLog I have only info, that Computer has been rebooted from bugcheck. The bugcheck was: 0x00000019

Below is my minidump:

Code:
1: kd> !analyze -v
*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

BAD_POOL_HEADER (19)
The pool is already corrupt at the time of the current request.
This may or may not be due to the caller.
The internal pool links must be walked to figure out a possible cause of
the problem, and then special pool applied to the suspect tags or the driver
verifier to a suspect driver.
Arguments:
Arg1: 0000000000000021, the data following the pool block being freed is corrupt.  Typically this means the consumer (call stack ) has overrun the block.
Arg2: fffff8a000a9b000, The pool pointer being freed.
Arg3: 00000000000010e0, The number of bytes allocated for the pool block.
Arg4: 0000000000000000, The corrupted value found following the pool block.

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

GetUlongFromAddress: unable to read from fffff800016731b0

BUGCHECK_STR:  0x19_21

POOL_ADDRESS:  fffff8a000a9b000

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  DRIVER_FAULT_SERVER_MINIDUMP

PROCESS_NAME:  svchost.exe

CURRENT_IRQL:  0

LAST_CONTROL_TRANSFER:  from fffff800016003cd to fffff800014cd740

STACK_TEXT: 
fffff880`0f68ba88 fffff800`016003cd : 00000000`00000019 00000000`00000021 fffff8a0`00a9b000 00000000`000010e0 : nt!KeBugCheckEx
fffff880`0f68ba90 fffff800`01775edc : 00000000`000010d0 00000000`00000000 fffff880`50777445 fffff8a0`00000001 : nt!ExDeferredFreePool+0xf8a
fffff880`0f68bb40 fffff800`014cc993 : fffffa80`06b4a060 00000000`04f3c858 00000000`000010d0 fffff880`0f68bc20 : nt!NtTraceControl+0x208
fffff880`0f68bbb0 00000000`76fe0efa : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
00000000`04f3c838 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x76fe0efa


STACK_COMMAND:  kb

FOLLOWUP_IP:
nt!NtTraceControl+208
fffff800`01775edc 8bc3            mov     eax,ebx

SYMBOL_STACK_INDEX:  2

SYMBOL_NAME:  nt!NtTraceControl+208

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: nt

IMAGE_NAME:  ntkrnlmp.exe

DEBUG_FLR_IMAGE_TIMESTAMP:  4cc791bd

FAILURE_BUCKET_ID:  X64_0x19_21_nt!NtTraceControl+208

BUCKET_ID:  X64_0x19_21_nt!NtTraceControl+208

Followup: MachineOwner
---------

Thank you in advance for any help in understanding this minidump output.

Regards,
Piotr
 
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