linux-hardening - Re: [PATCH RESEND][next] rds: Fix fall-through warnings for Clang

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Date:   Thu, 6 May 2021 06:50:43 +0000
From:   Haakon Bugge <haakon.bugge@...cle.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
CC:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Santosh Shilimkar <santosh.shilimkar@...cle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        OFED mailing list <linux-rdma@...r.kernel.org>,
        "rds-devel@....oracle.com" <rds-devel@....oracle.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-hardening@...r.kernel.org" <linux-hardening@...r.kernel.org>
Subject: Re: [PATCH RESEND][next] rds: Fix fall-through warnings for Clang

Sorry for the delay.


> On 20 Apr 2021, at 22:10, Gustavo A. R. Silva <gustavo@...eddedor.com> wrote:
> 
> Hi all,
> 
> Friendly ping: who can take this, please?
> 
> Thanks
> --
> Gustavo
> 
> On 3/5/21 03:06, Gustavo A. R. Silva wrote:
>> In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
>> warnings by explicitly adding multiple break statements instead of
>> letting the code fall through to the next case.
>> 
>> Link: https://github.com/KSPP/linux/issues/115
>> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>

Reviewed-by: Håkon Bugge <haakon.bugge@...cle.com>


Thxs, Håkon


>> ---
>> net/rds/tcp_connect.c | 1 +
>> net/rds/threads.c     | 2 ++
>> 2 files changed, 3 insertions(+)
>> 
>> diff --git a/net/rds/tcp_connect.c b/net/rds/tcp_connect.c
>> index 4e64598176b0..5461d77fff4f 100644
>> --- a/net/rds/tcp_connect.c
>> +++ b/net/rds/tcp_connect.c
>> @@ -78,6 +78,7 @@ void rds_tcp_state_change(struct sock *sk)
>> 	case TCP_CLOSE_WAIT:
>> 	case TCP_CLOSE:
>> 		rds_conn_path_drop(cp, false);
>> +		break;
>> 	default:
>> 		break;
>> 	}
>> diff --git a/net/rds/threads.c b/net/rds/threads.c
>> index 32dc50f0a303..1f424cbfcbb4 100644
>> --- a/net/rds/threads.c
>> +++ b/net/rds/threads.c
>> @@ -208,6 +208,7 @@ void rds_send_worker(struct work_struct *work)
>> 		case -ENOMEM:
>> 			rds_stats_inc(s_send_delayed_retry);
>> 			queue_delayed_work(rds_wq, &cp->cp_send_w, 2);
>> +			break;
>> 		default:
>> 			break;
>> 		}
>> @@ -232,6 +233,7 @@ void rds_recv_worker(struct work_struct *work)
>> 		case -ENOMEM:
>> 			rds_stats_inc(s_recv_delayed_retry);
>> 			queue_delayed_work(rds_wq, &cp->cp_recv_w, 2);
>> +			break;
>> 		default:
>> 			break;
>> 		}
>>