linux-hardening - Re: [PATCH 016/141] nfsd: Fix fall-through warnings for Clang

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Date:   Tue, 20 Apr 2021 15:28:13 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Chuck Lever <chuck.lever@...cle.com>
Cc:     Bruce Fields <bfields@...ldses.org>,
        Linux NFS Mailing List <linux-nfs@...r.kernel.org>,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 016/141] nfsd: Fix fall-through warnings for Clang

Hi all,

Friendly ping: who can take this, please?

Thanks
--
Gustavo

On 11/23/20 16:46, Gustavo A. R. Silva wrote:
> On Fri, Nov 20, 2020 at 01:27:51PM -0500, Chuck Lever wrote:
>>
>>
>>> On Nov 20, 2020, at 1:26 PM, Gustavo A. R. Silva <gustavoars@...nel.org> wrote:
>>>
>>> In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
>>> warnings by explicitly adding a couple of break statements instead of
>>> just 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>
>>> ---
>>> fs/nfsd/nfs4state.c | 1 +
>>> fs/nfsd/nfsctl.c    | 1 +
>>> 2 files changed, 2 insertions(+)
>>>
>>> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
>>> index d7f27ed6b794..cdab0d5be186 100644
>>> --- a/fs/nfsd/nfs4state.c
>>> +++ b/fs/nfsd/nfs4state.c
>>> @@ -3113,6 +3113,7 @@ nfsd4_exchange_id(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
>>> 			goto out_nolock;
>>> 		}
>>> 		new->cl_mach_cred = true;
>>> +		break;
>>> 	case SP4_NONE:
>>> 		break;
>>> 	default:				/* checked by xdr code */
>>> diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
>>> index f6d5d783f4a4..9a3bb1e217f9 100644
>>> --- a/fs/nfsd/nfsctl.c
>>> +++ b/fs/nfsd/nfsctl.c
>>> @@ -1165,6 +1165,7 @@ static struct inode *nfsd_get_inode(struct super_block *sb, umode_t mode)
>>> 		inode->i_fop = &simple_dir_operations;
>>> 		inode->i_op = &simple_dir_inode_operations;
>>> 		inc_nlink(inode);
>>> +		break;
>>> 	default:
>>> 		break;
>>> 	}
>>> -- 
>>> 2.27.0
>>>
>>
>> Acked-by: Chuck Lever <chuck.lever@...cle.com>
> 
> Thanks, Chuck.
> --
> Gustavo
>