linux-kernel - Re: [PATCH v2] selftests: seccomp: fix format-zero-length warnings

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Message-ID: <a461ba9f-b171-4b49-b282-1f4e2830f31e@linuxfoundation.org>
Date: Fri, 7 Jun 2024 14:58:47 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: Amer Al Shanawany <amer.shanawany@...il.com>, Kees Cook
 <kees@...nel.org>, Andy Lutomirski <luto@...capital.net>,
 Will Drewry <wad@...omium.org>, Shuah Khan <shuah@...nel.org>,
 linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Javier Carrasco <javier.carrasco.cruz@...il.com>,
 kernel test robot <lkp@...el.com>, Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v2] selftests: seccomp: fix format-zero-length warnings

On 6/7/24 06:41, Amer Al Shanawany wrote:
> fix the following errors by removing empty print statements:
> seccomp_benchmark.c:197:24: warning: zero-length gnu_printf format
>   string [-Wformat-zero-length]
>    197 |         ksft_print_msg("");
>        |                        ^~
> seccomp_benchmark.c:202:24: warning: zero-length gnu_printf format
>   string [-Wformat-zero-length]
>    202 |         ksft_print_msg("");
>        |                        ^~
> seccomp_benchmark.c:204:24: warning: zero-length gnu_printf format
>   string [-Wformat-zero-length]
>    204 |         ksft_print_msg("");
>        |                        ^~
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202312260235.Uj5ug8K9-lkp@intel.com/
> Signed-off-by: Amer Al Shanawany <amer.shanawany@...il.com>
> ---
> Changes v1 -> v2:
> removed empty print statements

Kees,

Is this change okay with you. I didn't see any use for
these empty ksft_print_msg().

I will take this patch if you are okay with the change.

> ---
>   tools/testing/selftests/seccomp/seccomp_benchmark.c | 3 ---
>   1 file changed, 3 deletions(-)
> 
> diff --git a/tools/testing/selftests/seccomp/seccomp_benchmark.c b/tools/testing/selftests/seccomp/seccomp_benchmark.c
> index b83099160fbc..6fe34be6c693 100644
> --- a/tools/testing/selftests/seccomp/seccomp_benchmark.c
> +++ b/tools/testing/selftests/seccomp/seccomp_benchmark.c
> @@ -194,14 +194,11 @@ int main(int argc, char *argv[])
>   	ksft_set_plan(7);
>   
>   	ksft_print_msg("Running on:\n");
> -	ksft_print_msg("");
>   	system("uname -a");
>   
>   	ksft_print_msg("Current BPF sysctl settings:\n");
>   	/* Avoid using "sysctl" which may not be installed. */
> -	ksft_print_msg("");
>   	system("grep -H . /proc/sys/net/core/bpf_jit_enable");
> -	ksft_print_msg("");
>   	system("grep -H . /proc/sys/net/core/bpf_jit_harden");
>   
>   	affinity();


thanks,
-- Shuah