| Message ID | 20230713143406.14342-4-cyphar@cyphar.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | memfd: cleanups for vm.memfd_noexec | expand |
On Thu, Jul 13, 2023 at 7:34 AM Aleksa Sarai <cyphar@cyphar.com> 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@cyphar.com> > --- > 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@google.com> -Jeff Xu > /* > -- > 2.41.0 >
On 2023-07-19, Jeff Xu <jeffxu@google.com> wrote: > On Thu, Jul 13, 2023 at 7:34 AM Aleksa Sarai <cyphar@cyphar.com> 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@cyphar.com> > > --- > > 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@google.com> Did you mean for this to a Reviewed-by?
On Wed, Aug 2, 2023 at 7:25 PM Aleksa Sarai <cyphar@cyphar.com> wrote: > > On 2023-07-19, Jeff Xu <jeffxu@google.com> wrote: > > On Thu, Jul 13, 2023 at 7:34 AM Aleksa Sarai <cyphar@cyphar.com> 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@cyphar.com> > > > --- > > > 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@google.com> > > Did you mean for this to a Reviewed-by? > Yes! Thanks for asking. Reviewed-by: Jeff Xu <jeffxu@google.com> > -- > Aleksa Sarai > Senior Software Engineer (Containers) > SUSE Linux GmbH > <https://www.cyphar.com/>
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(); + } } /*
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@cyphar.com> --- tools/testing/selftests/memfd/memfd_test.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)