On Tue, Jan 7, 2020 at 8:58 PM Lingpeng Chen <forrest0579@xxxxxxxxx> wrote:
>
> Right now in tcp_bpf_recvmsg, sock read data first from sk_receive_queue
> if not empty than psock->ingress_msg otherwise. If a FIN packet arrives
> and there's also some data in psock->ingress_msg, the data in
> psock->ingress_msg will be purged. It is always happen when request to a
> HTTP1.0 server like python SimpleHTTPServer since the server send FIN
> packet after data is sent out.
>
> Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
> Reported-by: Arika Chen <eaglesora@xxxxxxxxx>
> Suggested-by: Arika Chen <eaglesora@xxxxxxxxx>
> Signed-off-by: Lingpeng Chen <forrest0579@xxxxxxxxx>
> Signed-off-by: John Fastabend <john.fastabend@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v4.20+
Acked-by: Song Liu <songliubraving@xxxxxx>
