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Date:	Thu, 19 Jun 2014 15:19:39 -0500 (CDT)
From:	Christoph Lameter <>
To:	Thomas Gleixner <>
cc:	"Paul E. McKenney" <>,
	Sasha Levin <>,
	Pekka Enberg <>,
	Matt Mackall <>,
	Andrew Morton <>,
	Dave Jones <>,
	"" <>,
	LKML <>
Subject: Re: slub/debugobjects: lockup when freeing memory

On Thu, 19 Jun 2014, Thomas Gleixner wrote:

> Well, no. Look at the callchain:
> __call_rcu
>     debug_object_activate
>        rcuhead_fixup_activate
>           debug_object_init
>               kmem_cache_alloc
> So call rcu activates the object, but the object has no reference in
> the debug objects code so the fixup code is called which inits the
> object and allocates a reference ....

So we need to init the object in the page struct before the __call_rcu?

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