> > void
> > assert_sleepable(struct simplelock *interlock, const char *msg)
> > {
> > 
> > 	simple_lock_only_held(interlock, msg);
> > 	spinlock_switchcheck();
> > }
> 
> pardon my ignorance, but what do i pass as 'interlock'?

in the case of kauth_authorize_action, NULL.

> as you could
> have guessed from my previous question, this is hardly something i'm
> familiar with, nor do i have the time to dig into it.

you can put the following fragment at the top of kauth_authorize_action.
(please test)

	#if defined(LOCKDEBUG)
		spinlock_switchcheck();
		simple_lock_only_held(NULL, "kauth_authorize_action");
	#endif

YAMAMOTO Takashi