Re: [RFC PATCH 3/3] selftests: memfd: error out test process when child test fails

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On 2023-07-19, Jeff Xu <jeffxu@xxxxxxxxxx> wrote:
> On Thu, Jul 13, 2023 at 7:34 AM Aleksa Sarai <cyphar@xxxxxxxxxx> wrote:
> >
> > Before this change, a test runner using this self test would see a
> > return code of 0 when the tests using a child process (namely the
> > MFD_NOEXEC_SEAL and MFD_EXEC tests) failed, masking test failures.
> >
> > Fixes: 11f75a01448f ("selftests/memfd: add tests for MFD_NOEXEC_SEAL MFD_EXEC")
> > Signed-off-by: Aleksa Sarai <cyphar@xxxxxxxxxx>
> > ---
> >  tools/testing/selftests/memfd/memfd_test.c | 19 ++++++++++++++++++-
> >  1 file changed, 18 insertions(+), 1 deletion(-)
> >
> > diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c
> > index d8342989c547..8b7390ad81d1 100644
> > --- a/tools/testing/selftests/memfd/memfd_test.c
> > +++ b/tools/testing/selftests/memfd/memfd_test.c
> > @@ -1219,7 +1219,24 @@ static pid_t spawn_newpid_thread(unsigned int flags, int (*fn)(void *))
> >
> >  static void join_newpid_thread(pid_t pid)
> >  {
> > -       waitpid(pid, NULL, 0);
> > +       int wstatus;
> > +
> > +       if (waitpid(pid, &wstatus, 0) < 0) {
> > +               printf("newpid thread: waitpid() failed: %m\n");
> > +               abort();
> > +       }
> > +
> > +       if (WIFEXITED(wstatus) && WEXITSTATUS(wstatus) != 0) {
> > +               printf("newpid thread: exited with non-zero error code %d\n",
> > +                      WEXITSTATUS(wstatus));
> > +               abort();
> > +       }
> > +
> > +       if (WIFSIGNALED(wstatus)) {
> > +               printf("newpid thread: killed by signal %d\n",
> > +                      WTERMSIG(wstatus));
> > +               abort();
> > +       }
> >  }
> >
> Signed-off-by: Jeff Xu <jeffxu@xxxxxxxxxx>

Did you mean for this to a Reviewed-by?

-- 
Aleksa Sarai
Senior Software Engineer (Containers)
SUSE Linux GmbH
<https://www.cyphar.com/>

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