Re: [PATCH 0/4] ntsync documentation, selftests, and owner validation

On Saturday, 27 June 2026 21:42:35 CDT Iv=C3=A1n Ezequiel Rodriguez wrote:
> This series improves ntsync without changing wait/wake semantics:
>=20
>  1/4 =E2=80=94 Align Documentation/userspace-api/ntsync.rst with
>        include/uapi/linux/ntsync.h (ioctl macro names and struct layout).
>=20
>  2/4 =E2=80=94 Fix wake_all selftest: CREATE_EVENT returns an fd, not zer=
o.
>=20
>  3/4 =E2=80=94 Add selftests for documented EINVAL cases (zero owner, non=
=2Dzero
>        pad, cross-instance object use).
>=20
>  4/4 =E2=80=94 Reject wait ioctls when owner is zero, matching the docume=
nted
>        uAPI (3/4 depends on 4/4 for the owner tests).
>=20
> Patch 4/4 closes a spec gap: Documentation/userspace-api/ntsync.rst
> requires EINVAL when wait owner is zero, but setup_wait() only validated
> pad and flags.  Unlock/kill mutex ioctls already reject owner =3D=3D 0.
>=20
> Testing:
> - scripts/checkpatch.pl --strict --no-tree: clean (4/4 patches)
> - make headers && make -C tools/testing/selftests TARGETS=3Ddrivers/ntsync
> - Kernel 7.1.0-ntsync-test+ (CONFIG_NTSYNC=3Dy), QEMU x86_64 initramfs:
>   tools/testing/selftests/drivers/ntsync/ntsync =E2=80=94 12/12 PASS,
>   including wake_all and wait_args_validation
> - On 6.17.0-35-generic with the distro ntsync.ko (without patch 4/4):
>   wait_args_validation fails on owner=3D=3D0 (wait proceeds instead of
>   EINVAL), confirming the gap this series fixes
>=20
> Elizabeth Figura <[email protected]>
> [email protected]
> ---
>  Documentation/userspace-api/ntsync.rst         | 22 +++++-----
>  tools/testing/selftests/drivers/ntsync/ntsync.c | 45 ++++++++++++++++++++
>  drivers/misc/ntsync.c                          |  3 ++
>  3 files changed, 59 insertions(+), 11 deletions(-)
>=20
> Iv=C3=A1n Ezequiel Rodriguez (4):
>   docs: ntsync: align uAPI ioctl names and struct layout with ntsync.h
>   selftests: ntsync: fix wake_all CREATE_EVENT fd expectation
>   selftests: ntsync: add wait argument validation tests
>   ntsync: reject wait ioctls with zero owner
>=20
> --
> 2.43.0
>=20

Some of these changes overlap with changes already sent in <https://lore.ke=
rnel.org/all/[email protected]/>, which were never=
 applied. This series does not overlap with patches 2/4 and 3/4 from that s=
eries.