Re: [PATCH net-next] tuntap: add sanity checks about msg_controllen in sendmsg

Jakub Kicinski
2022-03-02T02:05:18Z

On Tue, 1 Mar 2022 14:43:14 +0800 Harold Huang wrote:
> In patch [1], tun_msg_ctl was added to allow pass batched xdp buffers to
> tun_sendmsg. Although we donot use msg_controllen in this path, we should
> check msg_controllen to make sure the caller pass a valid msg_ctl.
>
> [1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fe8dd45bb7556246c6b76277b1ba4296c91c2505
>
> Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
> Suggested-by: Jason Wang <jasowang@redhat.com>
> Signed-off-by: Harold Huang <baymaxhuang@gmail.com>

Would you mind resending the same patch? It looks like it depended on
your other change so the build bot was unable to apply and test it.