netdev - Re: [PATCH net-next v2 3/3] netlink: add validation of NLA_F

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Date:   Thu, 2 May 2019 16:56:09 -0600
From:   David Ahern <dsahern@...il.com>
To:     Michal Kubecek <mkubecek@...e.cz>,
        "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Johannes Berg <johannes@...solutions.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2 3/3] netlink: add validation of NLA_F_NESTED
 flag

On 5/2/19 8:15 AM, Michal Kubecek wrote:
> Add new validation flag NL_VALIDATE_NESTED which adds three consistency
> checks of NLA_F_NESTED_FLAG:
> 
>   - the flag is set on attributes with NLA_NESTED{,_ARRAY} policy
>   - the flag is not set on attributes with other policies except NLA_UNSPEC
>   - the flag is set on attribute passed to nla_parse_nested()
> 
> Signed-off-by: Michal Kubecek <mkubecek@...e.cz>
> 
> v2: change error messages to mention NLA_F_NESTED explicitly
> ---
>  include/net/netlink.h | 11 ++++++++++-
>  lib/nlattr.c          | 15 +++++++++++++++
>  2 files changed, 25 insertions(+), 1 deletion(-)
> 

Reviewed-by: David Ahern <dsahern@...il.com>