linux-kernel - subsystem_unregister() breakage in -mm

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Message-Id: <E1IaIs6-00051t-00@dorka.pomaz.szeredi.hu>
Date:	Wed, 26 Sep 2007 00:27:14 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	greg@...ah.com
CC:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: subsystem_unregister() breakage in -mm

I get "BUG: failure at mm/slab.c:591/page_get_cache()!" in latest -mm
when removing the fuse module.

This patch titled "kobject: remove the static array for the name"
looks like it's responsible.  Reverting it cures the problem.

The root of the problem seems to be, that decl_subsys() initializes
k_name with a string constant.  Then subsystem_unregister() will put
the kobject, which will free the k_name.

So, what's the right way to deal with this?

Thanks,
Miklos
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