Re: 2.6.14-rc3-rt2

[Ingo Molnar <mingo@elte.hu>]

* Thomas Gleixner <tglx@linutronix.de> wrote:

> > > BUG: init/1: leaked RT prio 98 (116)?
> > >
> > > Steven, it goes away when deadlock detection is enabled. Any pointers 
> 
> Thats actually a red hering caused by asymetric accounting which only
> happens when
> 
> CONFIG_DEBUG_PREEMPT=y 
> and 
> # CONFIG_RT_DEADLOCK_DETECT is not set

>  #if defined(CONFIG_DEBUG_PREEMPT) && defined(CONFIG_PREEMPT_RT)
> +	owner->lock_count--;
>  	if (owner->lock_count < 0 || owner->lock_count >= MAX_LOCK_STACK) {
>  		TRACE_OFF();
>  		printk("BUG: %s/%d: lock count of %u\n",
>  			owner->comm, owner->pid, owner->lock_count);
>  		dump_stack();
>  	}
> -	owner->lock_count--;
>  	owner->owned_lock[owner->lock_count] = NULL;

ouch. Brown paperbag for me! Patch applied.

	Ingo