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Message-ID: <CAHJXk3aA62C5s-MV-B6mCTuUJGCdc-pEJpEkxX7vBDwDdHaSrw@mail.gmail.com> Date: Wed, 2 Mar 2022 11:37:32 +0800 From: Harold Huang <baymaxhuang@...il.com> To: Jakub Kicinski <kuba@...nel.org> Cc: netdev <netdev@...r.kernel.org>, Jason Wang <jasowang@...hat.com>, Eric Dumazet <edumazet@...gle.com>, Eric Dumazet <eric.dumazet@...il.com>, "David S. Miller" <davem@...emloft.net>, "Michael S. Tsirkin" <mst@...hat.com>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Jesper Dangaard Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>, open list <linux-kernel@...r.kernel.org>, "open list:VIRTIO HOST (VHOST)" <kvm@...r.kernel.org>, "open list:VIRTIO HOST (VHOST)" <virtualization@...ts.linux-foundation.org>, "open list:XDP (eXpress Data Path)" <bpf@...r.kernel.org> Subject: Re: [PATCH net-next] tuntap: add sanity checks about msg_controllen in sendmsg On Wed, Mar 2, 2022 at 10:05 AM Jakub Kicinski <kuba@...nel.org> wrote: > > 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@...il.com> > > Suggested-by: Jason Wang <jasowang@...hat.com> > > Signed-off-by: Harold Huang <baymaxhuang@...il.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. Yes, it depends on this patch [1] which has been applied to netdev. I see this patch could be applied to netdev by git am. But if I use another patch that could be applied to linux master, it could not be applied to netdev anymore. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=fb3f903769e8
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