this one was caused by netio.sys. I dont have a true debugger to analyse it for you but I will foward this threads link to someone who has one, so he can take a look.
Ken
Microsoft (R) Windows Debugger Version 6.11.0001.404 X86
Copyright (c) Microsoft Corporation. All rights reserved.
Loading Dump File [C:\Users\K\Desktop\090909-21418-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
Symbol search path is: SRV*d:\symbols*
Symbol information
Executable search path is:
Windows 7 Kernel Version 7600 MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Machine Name:
Kernel base = 0xfffff800`02a11000 PsLoadedModuleList = 0xfffff800`02c4ee50
Debug session time: Wed Sep 9 21:16:38.278 2009 (GMT-4)
System Uptime: 0 days 0:08:58.964
Loading Kernel Symbols
...............................................................
................................................................
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Loading User Symbols
Loading unloaded module list
.....
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* *
* Bugcheck Analysis *
* *
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Use !analyze -v to get detailed debugging information.
BugCheck 7F, {8, 80050031, 6f8, fffff80002a885a2}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
Followup: MachineOwner
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2: kd> !analyze -v
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* *
* Bugcheck Analysis *
* *
*******************************************************************************
UNEXPECTED_KERNEL_MODE_TRAP (7f)
This means a trap occurred in kernel mode, and it's a trap of a kind
that the kernel isn't allowed to have/catch (bound trap) or that
is always instant death (double fault). The first number in the
bugcheck params is the number of the trap (8 = double fault, etc)
Consult an Intel x86 family manual to learn more about what these
traps are. Here is a *portion* of those codes:
If kv shows a taskGate
use .tss on the part before the colon, then kv.
Else if kv shows a trapframe
use .trap on that value
Else
.trap on the appropriate frame will show where the trap was taken
(on x86, this will be the ebp that goes with the procedure KiTrap)
Endif
kb will then show the corrected stack.
Arguments:
Arg1: 0000000000000008, EXCEPTION_DOUBLE_FAULT
Arg2: 0000000080050031
Arg3: 00000000000006f8
Arg4: fffff80002a885a2
Debugging Details:
------------------
BUGCHECK_STR: 0x7f_8
CUSTOMER_CRASH_COUNT: 1
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
CURRENT_IRQL: 2
LAST_CONTROL_TRANSFER: from fffff80002a82469 to fffff80002a82f00
STACK_TEXT:
fffff880`02f69ce8 fffff800`02a82469 : 00000000`0000007f 00000000`00000008 00000000`80050031 00000000`000006f8 : nt!KeBugCheckEx
fffff880`02f69cf0 fffff800`02a80932 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiBugCheckDispatch+0x69
fffff880`02f69e30 fffff800`02a885a2 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiDoubleFaultAbort+0xb2
fffff880`02f86000 fffff800`02a4b842 : fffffa80`08ea8080 00000000`00000001 00000000`00000000 fffffa80`049b47c8 : nt!SeAccessCheckWithHint+0x312
fffff880`02f860e0 fffff880`015a1c5a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!SeAccessCheckFromState+0x102
fffff880`02f867d0 fffff880`0159f94f : 00000000`c0000022 00000000`00000000 00000000`00000000 00000000`00000000 : NETIO!CompareSecurityContexts+0x6a
fffff880`02f86840 fffff880`015a19b5 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : NETIO!MatchValues+0xef
fffff880`02f86890 fffff880`015a1845 : fffffa80`08a0d7a0 fffffa80`08e022a0 fffff880`02f86ab8 fffff880`02f871f0 : NETIO!FilterMatch+0x95
fffff880`02f868e0 fffff880`015a2ccb : 00000000`00000000 00000000`00000000 fffff880`02f871f0 fffff880`02f86aa0 : NETIO!IndexListClassify+0x69
fffff880`02f86960 fffff880`0163e4d0 : fffff880`02f871f0 fffff880`02f86e38 fffff880`02f87b70 fffffa80`04aa3030 : NETIO!KfdClassify+0xa4e
fffff880`02f86cd0 fffff880`0163777e : fffff880`01746690 00000000`00000000 fffffa80`08970430 00000000`00000000 : tcpip!WfpAleClassify+0x50
fffff880`02f86d10 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : tcpip!WfpAlepAuthorizeSend+0x94e
STACK_COMMAND: kb
FOLLOWUP_IP:
NETIO!CompareSecurityContexts+6a
fffff880`015a1c5a 448b442470 mov r8d,dword ptr [rsp+70h]
SYMBOL_STACK_INDEX: 5
SYMBOL_NAME: NETIO!CompareSecurityContexts+6a
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: NETIO
IMAGE_NAME: NETIO.SYS
DEBUG_FLR_IMAGE_TIMESTAMP: 4a5bc18a
FAILURE_BUCKET_ID: X64_0x7f_8_NETIO!CompareSecurityContexts+6a
BUCKET_ID: X64_0x7f_8_NETIO!CompareSecurityContexts+6a
Followup: MachineOwner
---------