On Wed, 2018-04-25 at 14:56 +0800, Yanjun Zhu wrote:
> Hi, all
>
> rxe_send [rdma_rxe]
> ip_local_out
> __ip_local_out
> ip_output
> ip_finish_output
> ip_finish_output2
> dev_queue_xmit
>
Hi, all
rxe_send [rdma_rxe]
ip_local_out
__ip_local_out
ip_output
ip_finish_output
ip_finish_output2
dev_queue_xmit
__dev_queue_xmit
dev_hard_start_xmit
Hi, all
rxe_send
ip_local_out
__ip_local_out
nf_hook_slow
In the above call process, nf_hook_slow drops and frees skb, then -EPERM
is returned when iptables rules(iptables -I OUTPUT -p udp --dport 4791
-j DROP) is set.
If skb->users is not changed in softroce,
On 2018/4/20 10:19, Doug Ledford wrote:
On Thu, 2018-04-19 at 10:01 -0400, Zhu Yanjun wrote:
When skb is dropped by iptables rules, the skb is freed at the same time
-EPERM is returned. So in softroce, it is not necessary to free skb again.
Or else, crash will occur.
The steps to reproduce:
On Thu, 2018-04-19 at 10:01 -0400, Zhu Yanjun wrote:
> When skb is dropped by iptables rules, the skb is freed at the same time
> -EPERM is returned. So in softroce, it is not necessary to free skb again.
> Or else, crash will occur.
>
> The steps to reproduce:
>
> server
