0: kd> !stacks
Proc.Thread .Thread Ticks ThreadState Blocker
[85404020 System]
4.00001c 85429850 0000923 Blocked nt!AlpcpSignalAndWait+0x7b
4.000028 85424020 0000923 Blocked nt!AlpcpSignalAndWait+0x7b
4.000034 85424798 0001178 Blocked nt!AlpcpSignalAndWait+0x7b
4.000044 85423a70 0000923 Blocked nt!AlpcpSignalAndWait+0x7b
4.00005c 8542a5f8 0000031 Blocked nt!MiModifiedPageWriter+0x39
4.000074 85427a28 0000001 Blocked nt!CcQueueLazyWriteScanThread+0x4a
4.000080 8541f5a8 0003751 Blocked nt!AlpcpReceiveMessagePort+0x245
4.000084 85435d48 0000041 Blocked nt!EtwpLogger+0xd0
4.000088 854357b0 0000001 Blocked nt!EtwpLogger+0xd0
4.00008c 85449d48 0000001 Blocked nt!EtwpLogger+0xd0
4.000090 854497b0 0000001 Blocked nt!EtwpLogger+0xd0
4.000098 85c94540 0000001 Blocked nt!EtwpLogger+0xd0
......
[88ab53d0 svchost.exe]
48c.000490 a27caa88 00038c4 Blocked nt!KiFastCallEntry+0x12a
48c.0004a8 a27e43b0 000017f Blocked nt!ObpWaitForMultipleObjects+0x262
48c.0004b0 a27e7868 00031e0 Blocked nt!KiAcquireFastMutex+0x56
48c.0004c0 a15fdd48 00004ce Blocked nt!ObpWaitForMultipleObjects+0x262
48c.0004f8 a27f07e0 0000804 Blocked nt!ObpWaitForMultipleObjects+0x262
48c.0004fc a27fd030 0003797 Blocked nt!ObpWaitForMultipleObjects+0x262
48c.000500 a27ffc18 0003817 Blocked nt!ObpWaitForMultipleObjects+0x262
48c.000548 a2d8d548 00038d2 Blocked nt!IoRemoveIoCompletion+0x23
48c.000560 a2d96388 0003081 Blocked nt!KiAcquireFastMutex+0x56
48c.0005b8 a2d89a10 00036fc Blocked nt!KiAcquireFastMutex+0x56
48c.0005d4 a2db6380 0002db7 Blocked nt!KiAcquireFastMutex+0x56
48c.000674 a2df87b8 0003e84 Blocked nt!ObpWaitForMultipleObjects+0x262
48c.000ff8 b6c4dc50 0003675 Blocked nt!KiAcquireFastMutex+0x56
48c.000858 b6cc0910 00031e0 Blocked nt!KiAcquireFastMutex+0x56
48c.000728 85542030 0003534 Blocked nt!KiAcquireFastMutex+0x56
48c.0002dc 854a75f8 0003cab Blocked nt!ObpWaitForMultipleObjects+0x262
48c.000744 854a7a60 0003cb0 Blocked nt!IoRemoveIoCompletion+0x23
48c.000554 8554d4c0 00038c3 Blocked nt!ObpWaitForMultipleObjects+0x262
48c.001004 a15e6690 0003014 Blocked nt!KiAcquireFastMutex+0x56
48c.00105c 85639a08 0002ee7 Blocked nt!KiAcquireFastMutex+0x56
48c.001060 85639720 0002ee7 Blocked nt!KiAcquireFastMutex+0x56
48c.0010a8 a15e6358 0002e8e Blocked nt!KiAcquireFastMutex+0x56
48c.0010ac 855a9030 0002e57 Blocked nt!KiAcquireFastMutex+0x56
48c.0010b8 8560c568 0002dc6 Blocked nt!KiAcquireFastMutex+0x56
48c.0010c0 85568880 0002a4f Blocked nt!KiAcquireFastMutex+0x56
48c.0010fc 855b5030 0002a4f Blocked nt!KiAcquireFastMutex+0x56
48c.001100 855b5d48 0001274 Blocked nt!AlpcpSignalAndWait+0x7b
48c.001194 85585030 000017f Blocked nt!IoRemoveIoCompletion+0x23
48c.0011a8 85584a60 000017f Blocked nt!IoRemoveIoCompletion+0x23
......
[855a4d40 explorer.exe]
71c.0008b4 855c3030 00035ee Blocked nt!KiAcquireFastMutex+0x56
71c.000adc b6cd7d48 0003069 Blocked nt!ObpWaitForMultipleObjects+0x262
71c.000cb0 b6cdc920 00037c0 Blocked nt!KiFastCallEntry+0x12a
71c.000480 854a4ad8 00034bc Blocked nt!KiFastCallEntry+0x12a
71c.00056c 8556ed48 000282e Blocked nt!KiFastCallEntry+0x12a
71c.000c80 854f14f0 0002889 Blocked nt!KiAcquireFastMutex+0x56
71c.000cfc 854e1ad8 00036f9 Blocked nt!KiAcquireFastMutex+0x56
71c.000070 85667030 0003790 Blocked nt!ObpWaitForMultipleObjects+0x262
71c.0001a4 8543dd48 000372c Blocked nt!ObpWaitForMultipleObjects+0x262
71c.000128 8560f030 00034a9 Blocked nt!KiAcquireFastMutex+0x56
71c.000de0 8560e970 0003719 Blocked nt!ObpWaitForMultipleObjects+0x262
71c.000e60 855c05f8 00036fc Blocked nt!ExfAcquirePushLockExclusive+0x100
71c.000ae8 85626030 0003743 Blocked nt!ObpWaitForMultipleObjects+0x262
71c.000a00 854fbbe0 0002800 Blocked nt!KiFastCallEntry+0x12a
71c.0009e4 856267f0 00034ac Blocked nt!KiFastCallEntry+0x12a
71c.000830 855bad48 000372c Blocked win32k!xxxRealSleepThread+0x1d7
71c.00099c 854fa380 0000a18 Blocked win32k!xxxRealSleepThread+0x1d7
71c.000814 8562f838 00036fc Blocked nt!KiAcquireFastMutex+0x56
71c.000568 8556f030 0003700 Blocked nt!KiFastCallEntry+0x12a
71c.000cdc 85632d48 0003069 Blocked nt!ExfAcquirePushLockExclusive+0x100
......
[8562cd40 dllhost.exe]
d00.000d0c 85633030 00036fc Blocked nt!KiAcquireFastMutex+0x56
[856166a0 IMSCMIG.EXE]
bf8.0001b0 8564b640 00064ea ???? nt!KiThreadStartup