[LTP] [PATCH v1] OpenPOSIX: Allow 0 return value when detaching or joining joined thread

[Cyril Hrubis]

Hi!
> Latest test in our openqa setup (Linux 7.1-rc2, Glibc 2.43) show following errors:
> - pthread_detach_4-2: Test FAILED: Incorrect return code: 0 instead of ESRCH
> - pthread_join_6-2: Test FAILED: Return code should be ESRCH, but is: 0 instead.
> 
> These are caused by glibc commit 5da15b15adab661c80e373b6af89be0b5fa5b3ad
> ("nptl: Do not use pthread set_tid_address as state synchronization (BZ #19951)").
> 
> The new glibc logic removed the explicit validation of thread handles that
> previously returned ESRCH:
> 
> --- a/nptl/pthread_detach.c
> -  if (INVALID_NOT_TERMINATED_TD_P (pd))
> -    return ESRCH;
> 
> --- a/nptl/pthread_join_common.c
> -  if (INVALID_NOT_TERMINATED_TD_P (pd))
> -    return ESRCH;
> -
> 
> Update the tests to allow both return codes.
> 
> Signed-off-by: Wei Gao <wegao@suse.com>
> ---
>  .../conformance/interfaces/pthread_detach/4-2.c             | 6 +++---
>  .../conformance/interfaces/pthread_join/6-2.c               | 6 +++---
>  2 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-2.c b/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-2.c
> index a6dc83efd..1e7b84117 100644
> --- a/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-2.c
> +++ b/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-2.c
> @@ -18,7 +18,7 @@
>   * 1. Create a thread.
>   * 2.Wait 'till the thread exits.
>   * 3.Try and detach this thread.
> - * 4.Check the return value and make sure it is ESRCH
> + * 4.Check the return value and make sure it is ESRCH or 0
>   *
>   */
>  
> @@ -59,9 +59,9 @@ int test_main(int argc PTS_ATTRIBUTE_UNUSED, char **argv PTS_ATTRIBUTE_UNUSED)
>  	ret = pthread_detach(new_th);
>  
>  	/* Check return value of pthread_detach() */
> -	if (ret != ESRCH) {
> +	if (ret != ESRCH && ret != 0) {
>  		printf
> -		    ("Test FAILED: Incorrect return code: %d instead of ESRCH\n",
> +		    ("Test FAILED: Incorrect return code: %d instead of ESRCH or 0\n",
>  		     ret);
>  		return PTS_FAIL;

Technically since this is open posix testsuite we should PTS_UNTESTED on
0 since we were not able to trigger the error since the implementation
does not implement the optional behavior.

Something as:

diff --git a/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-2.c b/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-2.c
index 1e7b84117..fc7a6e9c9 100644
--- a/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-2.c
+++ b/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-2.c
@@ -58,8 +58,13 @@ int test_main(int argc PTS_ATTRIBUTE_UNUSED, char **argv PTS_ATTRIBUTE_UNUSED)
        /* Detach the non-existant thread. */
        ret = pthread_detach(new_th);

+       if (ret == 0) {
+               printf("Test UNTESTED: Implementation does not return ESCHR\n");
+               return PTS_UNTESTED;
+       }
+
        /* Check return value of pthread_detach() */
-       if (ret != ESRCH && ret != 0) {
+       if (ret != ESRCH) {
                printf
                    ("Test FAILED: Incorrect return code: %d instead of ESRCH or 0\n",
                     ret);


-- 
Cyril Hrubis
chrubis@suse.cz