How to list threads in WinDbg (kernel debugging)

8
votes

Does anyone know how I can list all threads in WinDbg while kernel debugging. I have found older references that say '~' but that does not work.

Specifically I am looking to the find the ID of a thread that caused an event, namely a breakpoint.

Thanks.

2
windowsmultithreadingkernelwindbg

2 Answers

9
votes

~ only works in user mode. To list all threads on the system, it's !process 0 1 as I recall (it's been awhile).

"Specifically I am looking to the find the ID of a thread that caused an event, namely a breakpoint."

This statement doesn't make much sense to do from kernel mode. Can you descrive more about what your scenario is?

Edit: Ah, now I get it. You want to know which thread you're currently in right now. Give !thread a go.

6
votes

You can always use the @$thread pseudo register to reference the current thread object:

0: kd> r @$thread
$thread=fffff80002c02cc0

If you want the ID of the thread, you'll need to dig it out of the ETHREAD. Luckily, the @$thread is typed as a pointer to an ETHREAD if you're using the C++ evaluator:

0: kd> ?? @$thread->Cid
struct _CLIENT_ID
   +0x000 UniqueProcess    : 0x00000000`00001408 Void
   +0x008 UniqueThread     : 0x00000000`0000144c Void

-scott