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

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Message-ID: <CAOi1vP8UFriFYzzkHs9HQFw=AjJyLayaMfZ2LGJuCoie+FeYaQ@mail.gmail.com>
Date:   Fri, 5 Mar 2021 15:07:08 +0100
From:   Ilya Dryomov <idryomov@...il.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Jeff Layton <jlayton@...nel.org>,
        Ceph Development <ceph-devel@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH RESEND][next] ceph: Fix fall-through warnings for Clang

On Fri, Mar 5, 2021 at 10:59 AM Gustavo A. R. Silva
<gustavoars@...nel.org> wrote:
>
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple
> of warnings by explicitly adding a break and a goto 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/ceph/dir.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index 83d9358854fb..3e575656713e 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -631,10 +631,12 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence)
>         switch (whence) {
>         case SEEK_CUR:
>                 offset += file->f_pos;
> +               break;
>         case SEEK_SET:
>                 break;
>         case SEEK_END:
>                 retval = -EOPNOTSUPP;
> +               goto out;
>         default:
>                 goto out;
>         }
> --
> 2.27.0
>

Applied.

Thanks,

                Ilya