netdev - Re: [PATCH net] xfrm: fix freed block size calculation in xfrm_policy

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Date:	Fri, 18 Jan 2013 14:43:15 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	mkubecek@...e.cz
Cc:	steffen.klassert@...unet.com, herbert@...dor.apana.org.au,
	netdev@...r.kernel.org
Subject: Re: [PATCH net] xfrm: fix freed block size calculation in
 xfrm_policy_fini()

From: Michal Kubecek <mkubecek@...e.cz>
Date: Fri, 18 Jan 2013 16:03:48 +0100

> Missing multiplication of block size by sizeof(struct hlist_head)
> can cause xfrm_hash_free() to be called with wrong second argument
> so that kfree() is called on a block allocated with vzalloc() or
> __get_free_pages() or free_pages() is called with wrong order when
> a namespace with enough policies is removed.
> 
> Bug introduced by commit a35f6c5d, i.e. versions >= 2.6.29 are
> affected.
> 
> Signed-off-by: Michal Kubecek <mkubecek@...e.cz>

I'll let Steffen pick this one up.
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