linux-hardening - Re: [PATCH 010/141] ima: Fix fall-through warnings for Clang

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Date:   Tue, 20 Apr 2021 15:28:36 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>
Cc:     linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH 010/141] ima: Fix fall-through warnings for Clang

Hi all,

Friendly ping: who can take this, please?

Thanks
--
Gustavo

On 11/20/20 12:25, Gustavo A. R. Silva wrote:
> In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
> warnings by explicitly adding multiple 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>
> ---
>  security/integrity/ima/ima_main.c   | 1 +
>  security/integrity/ima/ima_policy.c | 2 ++
>  2 files changed, 3 insertions(+)
> 
> diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
> index 2d1af8899cab..600b97677085 100644
> --- a/security/integrity/ima/ima_main.c
> +++ b/security/integrity/ima/ima_main.c
> @@ -743,6 +743,7 @@ int ima_load_data(enum kernel_load_data_id id, bool contents)
>  			pr_err("impossible to appraise a module without a file descriptor. sig_enforce kernel parameter might help\n");
>  			return -EACCES;	/* INTEGRITY_UNKNOWN */
>  		}
> +		break;
>  	default:
>  		break;
>  	}
> diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
> index 9b5adeaa47fc..ea634fc3b82f 100644
> --- a/security/integrity/ima/ima_policy.c
> +++ b/security/integrity/ima/ima_policy.c
> @@ -566,6 +566,7 @@ static bool ima_match_rules(struct ima_rule_entry *rule, struct inode *inode,
>  			rc = ima_filter_rule_match(secid, rule->lsm[i].type,
>  						   Audit_equal,
>  						   rule->lsm[i].rule);
> +			break;
>  		default:
>  			break;
>  		}
> @@ -802,6 +803,7 @@ void __init ima_init_policy(void)
>  		add_rules(default_measurement_rules,
>  			  ARRAY_SIZE(default_measurement_rules),
>  			  IMA_DEFAULT_POLICY);
> +		break;
>  	default:
>  		break;
>  	}
>