linux-kernel - Re: [PATCH net-next 2/3] netlink: set bad attribute also on maxtype check

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Message-ID: <e861784bf2bd177494396de0f404f3d8472dc37a.camel@sipsolutions.net>
Date:   Thu, 02 May 2019 14:52:10 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Michal Kubecek <mkubecek@...e.cz>,
        "David S. Miller" <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        David Ahern <dsahern@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next 2/3] netlink: set bad attribute also on maxtype
 check

On Thu, 2019-05-02 at 12:48 +0000, Michal Kubecek wrote:
> The check that attribute type is within 0...maxtype range in
> __nla_validate_parse() sets only error message but not bad_attr in extack.
> Set also bad_attr to tell userspace which attribute failed validation.

Good catch, we actually do have an attribute in this case.

Reviewed-by: Johannes Berg <johannes@...solutions.net>

johannes