netdev - Re: [PATCH] net: net_assign

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Message-ID: <4A6EFA35.3060309@gmail.com>
Date:	Tue, 28 Jul 2009 15:16:37 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Pavel Emelyanov <xemul@...nvz.org>
CC:	Igor M Podlesny <for.poige+bugzilla.kernel.org@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, netdev@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] net: net_assign_generic()  fix

Pavel Emelyanov a écrit :
>> Hmm...
>>
>> Real bug may be fixed by followed patch ? (yet untested, sorry...)
>>
>> [PATCH] net: net_assign_generic() fix 
>>
>> memcpy() should take into account size of pointers,
>> not only number of pointers to copy.
>>
>> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> 
> Acked-by: Pavel Emelyanov <xemul@...nvz.org>

Thanks.

Still this doesnt explain the crash, because initial number of pointers is 13
(INITIAL_NET_GEN_PTRS)

We probably never realloc this array, unless a module forgets to
unregister_pernet_gen_device() and we load/unload it many times ?

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