AICCU threads hang on TAP0901 IRPs

gistfile1.txt

Opened log file 'c:\temp\hung.txt'
0: kd> !process 0 7 aiccu-2012-02-02-windows-console.exe
PROCESS 864566e0  SessionId: 1  Cid: 0f74    Peb: 7ffd6000  ParentCid: 14f4
    DirBase: 7ce08a60  ObjectTable: c368ed50  HandleCount:   2.
    Image: aiccu-2012-02-02-windows-console.exe
    VadRoot 86075238 Vads 72 Clone 0 Private 279. Modified 0. Locked 0.
    DeviceMap b81eede0
    Token                             bef43c38
    ElapsedTime                       00:23:41.035
    UserTime                          00:00:02.698
    KernelTime                        00:00:00.171
    QuotaPoolUsage[PagedPool]         95568
    QuotaPoolUsage[NonPagedPool]      3776
    Working Set Sizes (now,min,max)  (1173, 50, 345) (4692KB, 200KB, 1380KB)
    PeakWorkingSetSize                1173
    VirtualSize                       54 Mb
    PeakVirtualSize                   60 Mb
    PageFaultCount                    2109
    MemoryPriority                    BACKGROUND
    BasePriority                      8
    CommitCharge                      341

        THREAD 861c3d38  Cid 0f74.1194  Teb: 7ffde000 Win32Thread: 00000000 WAIT: (Executive) KernelMode Non-Alertable
            85efa1c8  Thread
        IRP List:
            8827abf0: (0006,0094) Flags: 00060a00  Mdl: 861dd2d0
        Not impersonating
        DeviceMap                 b81eede0
        Owning Process            864566e0       Image:         aiccu-2012-02-02-windows-console.exe
        Attached Process          N/A            Image:         N/A
        Wait Start TickCount      654696         Ticks: 34621 (0:00:09:00.091)
        Context Switch Count      346             
        UserTime                  00:00:00.000
        KernelTime                00:00:00.000
        Win32 Start Address 0x0040b074
        Stack Init c7af4000 Current c7af3bb0 Base c7af4000 Limit c7af1000 Call 0
        Priority 10 BasePriority 8 PriorityDecrement 2 IoPriority 2 PagePriority 5
        ChildEBP RetAddr  Args to Child              
        c7af3bc8 834ca23a 861c3d38 861c3dc0 00000000 nt!KiSwapContext+0x26 (FPO: [Uses EBP] [0,0,4])
        c7af3c0c 83465f38 861c3d38 85efa1c8 85efa410 nt!KiSwapThread+0x44f
        c7af3c64 836367bc 85efa1c8 00000000 00000000 nt!KeWaitForSingleObject+0x492
        c7af3cdc 8361347f 80000004 861c3d38 861c3d01 nt!PspExitThread+0x214
        c7af3cf4 834d1e8e 8852d8b8 c7af3d20 c7af3d2c nt!PsExitSpecialApc+0x22
        c7af3d4c 83468d42 00000001 00000000 c7af3d64 nt!KiDeliverApc+0x1dc
        c7af3d4c 77415d14 00000001 00000000 c7af3d64 nt!KiServiceExit+0x56 (FPO: [0,3] TrapFrame @ c7af3d64)
        02b4e674 00000000 00000000 00000000 00000000 ntdll!KiFastSystemCallRet (FPO: [0,0,0])

        THREAD 85efa1c8  Cid 0f74.095c  Teb: 7ffdd000 Win32Thread: 00000000 WAIT: (DelayExecution) KernelMode Non-Alertable
            85efa250  NotificationTimer
        IRP List:
            85e82c90: (0006,0094) Flags: 00060a00  Mdl: 88304b80
        Not impersonating
        DeviceMap                 b81eede0
        Owning Process            864566e0       Image:         aiccu-2012-02-02-windows-console.exe
        Attached Process          N/A            Image:         N/A
        Wait Start TickCount      698682       
        Context Switch Count      96771             
        UserTime                  00:00:00.000
        KernelTime                00:00:00.031
        Win32 Start Address 0x0040b074
        Stack Init b35bf000 Current b35beb88 Base b35bf000 Limit b35bc000 Call 0
        Priority 8 BasePriority 8 PriorityDecrement 0 IoPriority 2 PagePriority 5
        ChildEBP RetAddr  Args to Child              
        b35beba0 834ca23a 85efa1c8 85efa250 83516920 nt!KiSwapContext+0x26 (FPO: [Uses EBP] [0,0,4])
        b35bebe4 834c790e 85efa1c8 837df382 85efa3f4 nt!KiSwapThread+0x44f
        b35bec44 83636ce9 00000000 00000000 b35bec70 nt!KeDelayExecutionThread+0x472
        b35bec78 83636a67 48f0a97f 8852d8b8 80000004 nt!IoCancelThreadIo+0x70
        b35becdc 8361347f 80000004 85efa1c8 85efa201 nt!PspExitThread+0x4bf
        b35becf4 834d1e8e 8852d8b8 b35bed20 b35bed2c nt!PsExitSpecialApc+0x22
        b35bed4c 83468d42 00000001 00000000 b35bed64 nt!KiDeliverApc+0x1dc
        b35bed4c 77415d14 00000001 00000000 b35bed64 nt!KiServiceExit+0x56 (FPO: [0,3] TrapFrame @ b35bed64)
        02d4e5d4 00000000 00000000 00000000 00000000 ntdll!KiFastSystemCallRet (FPO: [0,0,0])


0: kd> !irp 8827abf0
Irp is active with 1 stacks 3 is current (= 0x8827aca8)
 Mdl=861dd2d0: System buffer=c17c56a0: Thread 861c3d38:  Irp is completed.  
     cmd  flg cl Device   File     Completion-Context
 [  4, 0]   0  0 86229030 00000000 00000000-00000000    
	       \Driver\tap0901
			Args: 00000000 00000000 00000000 00000000
0: kd> !irp 85e82c90
Irp is active with 1 stacks 3 is current (= 0x85e82d48)
 Mdl=88304b80: System buffer=c19a7600: Thread 85efa1c8:  Irp is completed.  
     cmd  flg cl Device   File     Completion-Context
 [  4, 0]   0  0 86229030 00000000 00000000-00000000    
	       \Driver\tap0901
			Args: 00000000 00000000 00000000 00000000
0: kd> .logclose
Closing open log file c:\temp\hung.txt