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Get the thread/context of the exception/bugcheck/BSOD
Paul_Jackson
Member Posts: 32
Hello guys,
I have a BSOD with the following bugcheck:
DRIVER_POWER_STATE_FAILURE (9f)
A driver has failed to complete a power IRP within a specific time.
Arguments:
Arg1: 0000000000000004, The power transition timed out waiting to synchronize with the Pnp
subsystem.
Arg2: 000000000000012c, Timeout in seconds.
Arg3: ffff94083ac95080, The thread currently holding on to the Pnp lock.
Arg4: ffffed066102f7e0, nt!TRIAGE_9F_PNP on Win7 and higher
If I use .thread/!thread in WinDbg after loading the dump, it shows thread ffff94083ac95080, which is the thread holding the lock.
On the other hand, if I use k, it shows the stack of the faulting thread:
# Child-SP RetAddr Call Site 00 ffffed06`6102f7a8 fffff800`70e9ead6 nt!KeBugCheckEx 01 ffffed06`6102f7b0 fffff800`711ad946 nt!PnpBugcheckPowerTimeout+0x76 02 ffffed06`6102f810 fffff800`70c512f9 nt!PopBuildDeviceNotifyListWatchdog+0x16 03 ffffed06`6102f840 fffff800`70c50059 nt!KiProcessExpiredTimerList+0x169 04 ffffed06`6102f930 fffff800`70dc64be nt!KiRetireDpcList+0x4e9 05 ffffed06`6102fb60 00000000`00000000 nt!KiIdleLoop+0x7e
Is it possible to switch to the faulting thread (and not the one holding the lock) so that .thread/!thread show info about it?
Thanks.
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Comments
With 9F you need to find the thread blocking the power state change. Try !poaction and !powertriage.
-scott
OSR
Thanks. I guess that it doesn't work with a minidump?
I have a 2 MB file, here's what I get:
1: kd> !poaction Error reading PopAction Allocated power irps (PopIrpList - fffff800710436d0) Error resolving nt!_LIST_ENTRY... Irp worker threads (PopIrpThreadList - fffff80071038cd0) Error resolving nt!_LIST_ENTRY... Error resolving nt!_POP_CURRENT_BROADCAST... 1: kd> !powertriage System Capabilities : GetByteFromAddress: unable to read from fffff8007106bb78 Machine is not AOAC capable. Power Capabilities: Could not read PopCapabilities at fffff80071043b40 Power Action: Error reading PopAction Error reading value of IopRootDeviceNode (0xfffff800710609c8) Devices with allocated Power IRPs: ***Error in InitTypeRead for Device Node Device Tree Info: !devpowerstate !devpowerstate Complete Links: !poaction !cstriage !pdctriage !pdcclients !fxdevice !pnptriagePerhaps I just don't have enough information in the dump.
!process 0 1doesn't work as well (TYPE mismatch for process object at ffff940828de5040).Yeah, not going to work in a minidump. There's basically nothing you can do with a minidump to debug a 9F.
-scott
OSR