Re: [PATCH for-review/for-rc/for-rc] RDMA/siw: Remove unwanted WARN_ON in siw_cm_llp_data_ready()

[Krishnamraju Eraparaju <krishna2@chelsio.com>]

On Friday, February 02/07/20, 2020 at 17:22:09 +0530, Krishnamraju Eraparaju wrote:
> Warnings like below can fill up the dmesg while disconnecting RDMA
> connections.
> Hence, removing the unwanted WARN_ON.
> 
> [72103.557612] WARNING: CPU: 6 PID: 0 at
> drivers/infiniband/sw/siw/siw_cm.c:1229 siw_cm_llp_data_ready+0xc1/0xd0
> [siw]
> [72103.557677] RIP: 0010:siw_cm_llp_data_ready+0xc1/0xd0 [siw]
> [72103.557693] Call Trace:
> [72103.557711]  tcp_data_queue+0x226/0xb40
> [72103.557714]  tcp_rcv_established+0x220/0x620
> [72103.557720]  tcp_v4_do_rcv+0x12a/0x1e0
> [72103.557722]  tcp_v4_rcv+0xb05/0xc00
> [72103.557728]  ip_local_deliver_finish+0x69/0x210
> [72103.557730]  ip_local_deliver+0x6b/0xe0
> [72103.557735]  ip_rcv+0x273/0x362
> [72103.557740]  __netif_receive_skb_core+0xb35/0xc30
> [72103.557752]  netif_receive_skb_internal+0x3d/0xb0
> [72103.557754]  napi_gro_frags+0x13b/0x200
> [72103.557788]  t4_ethrx_handler+0x433/0x7d0 [cxgb4]
> [72103.557800]  process_responses+0x318/0x580 [cxgb4]
> [72103.557820]  napi_rx_handler+0x14/0x100 [cxgb4]
> [72103.557822]  net_rx_action+0x149/0x3b0
> [72103.557826]  __do_softirq+0xe3/0x30a
> [72103.557831]  irq_exit+0x100/0x110
> [72103.557834]  do_IRQ+0x7f/0xe0
> [72103.557837]  common_interrupt+0xf/0xf
> 
> Signed-off-by: Krishnamraju Eraparaju <krishna2@chelsio.com>
> ---
>  drivers/infiniband/sw/siw/siw_cm.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/infiniband/sw/siw/siw_cm.c b/drivers/infiniband/sw/siw/siw_cm.c
> index 3bccfef40e7e..bcbc54998ace 100644
> --- a/drivers/infiniband/sw/siw/siw_cm.c
> +++ b/drivers/infiniband/sw/siw/siw_cm.c
> @@ -1226,7 +1226,6 @@ static void siw_cm_llp_data_ready(struct sock *sk)
>  
>  	cep = sk_to_cep(sk);
>  	if (!cep) {
> -		WARN_ON(1);
>  		goto out;
>  	}
>  	siw_dbg_cep(cep, "state: %d\n", cep->state);
> -- 
> 2.23.0.rc0
> 

Please ignore this patch as I mistakenly put "for-review/for-rc/for-rc"
in the subject line instead of "for-rc".