linux-kernel - Re: [BUG] wireless : cpu stuck for 61s

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Message-Id: <1217497994.7813.184.camel@penberg-laptop>
Date:	Thu, 31 Jul 2008 12:53:14 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Tomas Winkler <tomasw@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Young <hidave.darkstar@...il.com>,
	Johannes Berg <johannes@...solutions.net>,
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org
Subject: Re: [BUG] wireless : cpu stuck for 61s

On Thu, 2008-07-31 at 12:50 +0300, Tomas Winkler wrote:
> > There's ath5k in the stack trace but that, of course, doesn't
> > automatically mean it's at fault here. It could have been just the poor
> > bastard who was the next to allocate 4 KB with kmalloc() noticing the
> > corruption.
> >
> > Hope this helps!
> 
> I've seen something similar with fragmentation code in iwl4965 but I
> can reproduce it only when using SLAB. With SLUB it didn't shown up.
> Does anyone know what is difference between SLAB and SLUB in this context.?

Do you have CONFIG_SLUB_DEBUG_ON enabled? (Note: if you only have
CONFIG_SLUB_DEBUG enabled, then you need to enable debugging at run-time
by passing slub_debug to kernel command line.)

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