Re: [PATCH v4] sctp: check the rto_min and rto_max

[Wang Weidong <weidong1991.wang@gmail.com>]

From: Wang Weidong <wangweidong1@huawei.com>

On 2013/12/5 21:32, Neil Horman wrote:
> On Thu, Dec 05, 2013 at 10:19:25AM +0800, Wang Weidong wrote:
>> rto_min should be smaller than rto_max while rto_max should be larger
>> than rto_min. Add two proc_handler for the checking. Add the check in
>> sctp_setsockopt_rtoinfo.
>> delete a blank line in proc_sctp_do_hmac_alg() declaration.
>>
>> Suggested-by: Vlad Yasevich <vyasevich@gmail.com>
>> Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
>> ---
>>   net/sctp/socket.c |  5 ++++
>>   net/sctp/sysctl.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++----
>>   2 files changed, 74 insertions(+), 5 deletions(-)
>>
>> diff --git a/net/sctp/socket.c b/net/sctp/socket.c
>> index 72046b9..2e1af1b 100644
>> --- a/net/sctp/socket.c
>> +++ b/net/sctp/socket.c
>> @@ -2818,6 +2818,11 @@ static int sctp_setsockopt_rtoinfo(struct sock *sk, char __user *optval, unsigne
>>   	if (copy_from_user(&rtoinfo, optval, optlen))
>>   		return -EFAULT;
>>
>> +	if (rtoinfo.srto_min < 1 ||
>> +	    rtoinfo.srto_max > 86400000 ||
> These should be defiend to some descriptive value.
>
Thanks for your suggestion. I will fix it in v5.

Regards.