linux-kernel - Re: [PATCH 4/6] selftests/pidfd: Fix ksft print formats

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Message-ID: <c920ad68-45a7-23dd-9d4c-fac99e1a53c0@linux.intel.com>
Date:   Mon, 28 Aug 2023 14:01:18 +0300 (EEST)
From:   Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To:     "Wieczor-Retman, Maciej" <maciej.wieczor-retman@...el.com>
cc:     Christian Brauner <brauner@...nel.org>,
        Shuah Khan <shuah@...nel.org>,
        Reinette Chatre <reinette.chatre@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH 4/6] selftests/pidfd: Fix ksft print formats

On Mon, 28 Aug 2023, Wieczor-Retman, Maciej wrote:

> Many calls to ksft print functions have format strings that don't match
> with other passed arguments. One call expects a string but doesn't
> provide any argument after the format string.
> 
> Fix format specifiers so they match the passed variables.
> 
> Add a missing variable to ksft_test_result_pass() inside
> pidfd_fdinfo_test() so it matches other cases in the switch statement.
> 
> Signed-off-by: Wieczor-Retman, Maciej <maciej.wieczor-retman@...el.com>
> ---
>  tools/testing/selftests/pidfd/pidfd_fdinfo_test.c |  2 +-
>  tools/testing/selftests/pidfd/pidfd_test.c        | 12 ++++++------
>  2 files changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/tools/testing/selftests/pidfd/pidfd_fdinfo_test.c b/tools/testing/selftests/pidfd/pidfd_fdinfo_test.c
> index 4e86f927880c..01cc37bf611c 100644
> --- a/tools/testing/selftests/pidfd/pidfd_fdinfo_test.c
> +++ b/tools/testing/selftests/pidfd/pidfd_fdinfo_test.c
> @@ -62,7 +62,7 @@ static void error_report(struct error *err, const char *test_name)
>  		break;
>  
>  	case PIDFD_PASS:
> -		ksft_test_result_pass("%s test: Passed\n");
> +		ksft_test_result_pass("%s test: Passed\n", test_name);

Missing test_name leads to crash so this looks a Fixes: class thing for
me but you didn't provide one.

>  		break;
>  
>  	default:
> diff --git a/tools/testing/selftests/pidfd/pidfd_test.c b/tools/testing/selftests/pidfd/pidfd_test.c
> index 00a07e7c571c..c081ae91313a 100644
> --- a/tools/testing/selftests/pidfd/pidfd_test.c
> +++ b/tools/testing/selftests/pidfd/pidfd_test.c
> @@ -381,13 +381,13 @@ static int test_pidfd_send_signal_syscall_support(void)
>  
>  static void *test_pidfd_poll_exec_thread(void *priv)
>  {
> -	ksft_print_msg("Child Thread: starting. pid %d tid %d ; and sleeping\n",
> +	ksft_print_msg("Child Thread: starting. pid %d tid %ld ; and sleeping\n",
>  			getpid(), syscall(SYS_gettid));
>  	ksft_print_msg("Child Thread: doing exec of sleep\n");
>  
>  	execl("/bin/sleep", "sleep", str(CHILD_THREAD_MIN_WAIT), (char *)NULL);
>  
> -	ksft_print_msg("Child Thread: DONE. pid %d tid %d\n",
> +	ksft_print_msg("Child Thread: DONE. pid %d tid %ld\n",
>  			getpid(), syscall(SYS_gettid));
>  	return NULL;
>  }
> @@ -427,7 +427,7 @@ static int child_poll_exec_test(void *args)
>  {
>  	pthread_t t1;
>  
> -	ksft_print_msg("Child (pidfd): starting. pid %d tid %d\n", getpid(),
> +	ksft_print_msg("Child (pidfd): starting. pid %d tid %ld\n", getpid(),
>  			syscall(SYS_gettid));
>  	pthread_create(&t1, NULL, test_pidfd_poll_exec_thread, NULL);
>  	/*
> @@ -480,10 +480,10 @@ static void test_pidfd_poll_exec(int use_waitpid)
>  
>  static void *test_pidfd_poll_leader_exit_thread(void *priv)
>  {
> -	ksft_print_msg("Child Thread: starting. pid %d tid %d ; and sleeping\n",
> +	ksft_print_msg("Child Thread: starting. pid %d tid %ld ; and sleeping\n",
>  			getpid(), syscall(SYS_gettid));
>  	sleep(CHILD_THREAD_MIN_WAIT);
> -	ksft_print_msg("Child Thread: DONE. pid %d tid %d\n", getpid(), syscall(SYS_gettid));
> +	ksft_print_msg("Child Thread: DONE. pid %d tid %ld\n", getpid(), syscall(SYS_gettid));
>  	return NULL;
>  }
>  
> @@ -492,7 +492,7 @@ static int child_poll_leader_exit_test(void *args)
>  {
>  	pthread_t t1, t2;
>  
> -	ksft_print_msg("Child: starting. pid %d tid %d\n", getpid(), syscall(SYS_gettid));
> +	ksft_print_msg("Child: starting. pid %d tid %ld\n", getpid(), syscall(SYS_gettid));
>  	pthread_create(&t1, NULL, test_pidfd_poll_leader_exit_thread, NULL);
>  	pthread_create(&t2, NULL, test_pidfd_poll_leader_exit_thread, NULL);
>  
> 

-- 
 i.