Re: [PATCH 3/7] netfilter: nf_ct_helper: implement variable length helper private data

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On Monday 2012-06-04 15:09, Joe Perches wrote:

>On Mon, 2012-06-04 at 15:06 +0200, Jan Engelhardt wrote:
>> On Monday 2012-06-04 14:21, pablo@xxxxxxxxxxxxx wrote:
>
>> >@@ -218,13 +221,13 @@ int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
>> > 	}
>> > 
>> > 	if (help == NULL) {
>> >-		help = nf_ct_helper_ext_add(ct, flags);
>> >+		help = nf_ct_helper_ext_add(ct, helper, flags);
>> > 		if (help == NULL) {
>> > 			ret = -ENOMEM;
>> > 			goto out;
>> > 		}
>> > 	} else {
>> >-		memset(&help->help, 0, sizeof(help->help));
>> >+		memset(&help->data, 0, sizeof(helper->data_len));
>> > 	}
>> 
>> memset(help->data, 0, sizeof(helper->data_len));
>
>	memset(help->data, 0, helper->data_len);

I knew this looked suspect. With so many "sizeof"s, this spot was 
starting to look like a "mine is bigger" competition.
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