netdev - Re: [PATCH net-next 20/20] net/bridge: Update br_mdb

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Date:   Fri, 5 Oct 2018 09:49:42 -0600
From:   David Ahern <dsahern@...il.com>
To:     David Miller <davem@...emloft.net>, dsahern@...nel.org
Cc:     netdev@...r.kernel.org, christian@...uner.io, jbenc@...hat.com,
        stephen@...workplumber.org
Subject: Re: [PATCH net-next 20/20] net/bridge: Update br_mdb_dump for strict
 data checking

On 10/5/18 1:34 AM, David Miller wrote:
> From: David Ahern <dsahern@...nel.org>
> Date: Thu,  4 Oct 2018 14:33:55 -0700
> 
>> @@ -162,6 +162,28 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
>>  	return err;
>>  }
>>  
>> +static int br_mdb_valid_dump_req(const struct nlmsghdr *nlh,
>> +				 struct netlink_ext_ack *extack)
>> +{
>> +	struct br_port_msg *bpm;
>> +
>> +	if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*bpm))) {
>> +		NL_SET_ERR_MSG(extack, "Invalid header");
>> +		return -EINVAL;
>> +	}
>> +	if (bpm->ifindex) {
> 
> 'bpm' is never initialized.
> 

Thanks.

I had not updated the bridge command for strict checking. Doing so and
bridge mdb show generates a trace. Will fix.