netdev - Re: [PATCH net v4 1/2] net: sched: tbf: fix calculation of max

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Date:	Tue, 3 Dec 2013 14:09:06 +0800
From:	Yang Yingliang <yangyingliang@...wei.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	<davem@...emloft.net>, <netdev@...r.kernel.org>,
	<brouer@...hat.com>, <jpirko@...hat.com>, <jbrouer@...hat.com>
Subject: Re: [PATCH net v4 1/2] net: sched: tbf: fix calculation of max_size

On 2013/12/3 12:51, Eric Dumazet wrote:
> On Tue, 2013-12-03 at 11:26 +0800, Yang Yingliang wrote:
> 
>> +	if (qopt->rate.linklayer == TC_LINKLAYER_UNAWARE) {
>> +		rtab = qdisc_get_rtab(&qopt->rate, tb[TCA_TBF_RTAB]);
>> +		if (rtab) {
>> +			qdisc_put_rtab(rtab);
>> +			rtab = NULL;
>> +		}
>>  	}
> 
> Please make remove rtab use to make sure you dont leak a pointer.
> 
> 	if (qopt->rate.linklayer == TC_LINKLAYER_UNAWARE)
> 	    qdisc_put_rtab(qdisc_get_rtab(&qopt->rate,
> 				          tb[TCA_TBF_RTAB]));
> 
> 
>> +	if (qopt->peakrate.linklayer == TC_LINKLAYER_UNAWARE) {
>> +		ptab = qdisc_get_rtab(&qopt->peakrate, tb[TCA_TBF_PTAB]);
>> +		if (ptab) {
>> +			qdisc_put_rtab(ptab);
>> +			ptab = NULL;
>> +		}
> 
> Same here for ptab
> 
OK, Thanks!

Regards,
Yang


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