From: Jiri Benc <jbenc@redhat.com>
To: David Ahern <dsahern@gmail.com>
Cc: Christian Brauner <christian@brauner.io>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
David Miller <davem@davemloft.net>
Subject: Re: netlink: 16 bytes leftover after parsing attributes in process `ip'.
Date: Wed, 26 Sep 2018 07:51:15 +0200 [thread overview]
Message-ID: <20180926075115.4ca7c527@redhat.com> (raw)
In-Reply-To: <02fbfcb8-537c-dc5c-52dc-0f53d7fd0482@gmail.com>
On Tue, 25 Sep 2018 09:37:41 -0600, David Ahern wrote:
> For ifaddrmsg ifa_flags aligns with ifi_type which is set by kernel side
> so this should be ok.
Does the existing user space set ifi_type to anything? Does it zero out
the field?
Are we able to find a flag value that is not going to be set by unaware
user space? I.e., a bit that is unused by the current ARPHRD values on
both little and big endian? (ARPHRD_NONE might be a problem, though...)
Jiri
next prev parent reply other threads:[~2018-09-26 12:02 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-25 3:19 netlink: 16 bytes leftover after parsing attributes in process `ip' David Ahern
2018-09-25 9:49 ` Christian Brauner
2018-09-25 12:07 ` Stephen Hemminger
[not found] ` <CAHrFyr55vt78akhC+WE5maDPLzmurUeB6wT-DmHcCmnAfPKrgw@mail.gmail.com>
2018-09-25 13:16 ` Stephen Hemminger
2018-09-26 10:45 ` Christian Brauner
2018-09-25 14:47 ` Jiri Benc
2018-09-25 15:37 ` David Ahern
2018-09-26 5:51 ` Jiri Benc [this message]
2018-09-26 14:54 ` David Ahern
2018-09-26 15:02 ` Stephen Hemminger
2018-09-26 9:49 ` Christian Brauner
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