On 02/28/2019 02:47 AM, Sheng Lan wrote:
> From: Sheng Lan <lansh...@huawei.com>
>
> It can be reproduced by following steps:
> 1. virtio_net NIC is configured with gso/tso on
> 2. configure nginx as http server with an index file bigger than 1M bytes
> 3. use tc netem to produce duplicate packets and delay:
> tc qdisc add dev eth0 root netem delay 100ms 10ms 30% duplicate 90%
> 4. continually curl the nginx http server to get index file on client
> 5. BUG_ON is seen quickly
>
...
> To fix it, netem returns NET_XMIT_SUCCESS to upper stack
> when it clones a duplicate packet.
>
> Fixes: 35d889d1 ("sch_netem: fix skb leak in netem_enqueue()")
> Signed-off-by: Sheng Lan <lansh...@huawei.com>
> Reported-by: Qin Ji <jiqin...@huawei.com>
> Suggested-by: Eric Dumazet <eric.duma...@gmail.com>
>
> ---
Signed-off-by: Eric Dumazet <eduma...@google.com>
Thanks.
