netdev - Re: [PATCH net-next-2.6] netlink: fix typo in initialization

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Message-ID: <20091008080858.GC3255@psychotron.lab.eng.brq.redhat.com>
Date:	Thu, 8 Oct 2009 10:08:59 +0200
From:	Jiri Pirko <jpirko@...hat.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, kaber@...sh.net
Subject: Re: [PATCH net-next-2.6] netlink: fix typo in initialization

Thu, Oct 08, 2009 at 09:57:43AM CEST, davem@...emloft.net wrote:
>From: Jiri Pirko <jpirko@...hat.com>
>Date: Thu, 8 Oct 2009 09:23:23 +0200
>
>> Commit 9ef1d4c7c7aca1cd436612b6ca785b726ffb8ed8 introduced a typo in
>> initialization. This patch fixes this.
>> 
>> Signed-off-by: Jiri Pirko <jpirko@...hat.com>
>
>Doesn't this leak some uninitialized bytes to userspace?

Yes it does.

>
>Therefore, this fix probably belongs in net-2.6 and -stable instead
>of net-next-2.6, right?

Okay. The patch is applicable on net-2.6 (I presume on -stable too). Feel free
to apply.

Thanks.

Jirka

>
>> diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
>> index 6a53694..7cf6c0f 100644
>> --- a/net/sched/cls_api.c
>> +++ b/net/sched/cls_api.c
>> @@ -350,7 +350,7 @@ static int tcf_fill_node(struct sk_buff *skb, struct tcf_proto *tp,
>>  	tcm = NLMSG_DATA(nlh);
>>  	tcm->tcm_family = AF_UNSPEC;
>>  	tcm->tcm__pad1 = 0;
>> -	tcm->tcm__pad1 = 0;
>> +	tcm->tcm__pad2 = 0;
>>  	tcm->tcm_ifindex = qdisc_dev(tp->q)->ifindex;
>>  	tcm->tcm_parent = tp->classid;
>>  	tcm->tcm_info = TC_H_MAKE(tp->prio, tp->protocol);
--
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