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Date:	Sat, 14 Jan 2012 18:18:53 +0100
From:	Eric Dumazet <>
To:	Sasha Levin <>
Cc:	Dave Jones <>, davem <>,
	Pekka Enberg <>,
	Christoph Lameter <>,
	Matt Mackall <>,,, linux-kernel <>,
	linux-mm <>,,
	netdev <>
Subject: Re: Hung task when calling clone() due to netfilter/slab

Le samedi 14 janvier 2012 à 18:10 +0100, Eric Dumazet a écrit :

> Apparently SLUB calls sysfs_slab_add() from kmem_cache_create() while
> still holding slub_lock.
> So if the task launched needs to "cat /proc/slabinfo" or anything
> needing slub_lock, its a deadlock.

Bug added in commit 2bce64858442149784f6c88
(slub: Allow removal of slab caches during boot)

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