Pete wrote:

>I think the best resolution would be an instrumentation patch
>which records lock takers, and prints them when the thing is
>forcefuly oopsed. I should come with it eventually, if someone
>does not beat me to it (I wish they did, actually :-)
>  
What about the attached patch?
I'm not 100% that I've catched everyone that does 
spin_lock();_raw_spin_unlock(), and print_events() is not yet called 
from the oops/nmi codepath (How should it handle bust_spinlocks?)

Not really tested - boots bochs, print_events() output looks sane when 
manually triggered.

--
	Manfred