Re: [PATCH 4/4] ntsync: reject wait ioctls with zero owner

[Elizabeth Figura]

On Saturday, 27 June 2026 21:42:39 CDT Iván Ezequiel Rodriguez wrote:
> setup_wait() already validates pad and flags but not owner, while
> Documentation/userspace-api/ntsync.rst requires EINVAL when owner is
> zero. Reject early before queueing waiters.
> 
> Signed-off-by: Iván Ezequiel Rodriguez <ivanrwcm25@xxxxxxxxx>
> ---
>  drivers/misc/ntsync.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
> index 02c9d1192812..4a805919bb0c 100644
> --- a/drivers/misc/ntsync.c
> +++ b/drivers/misc/ntsync.c
> @@ -875,6 +875,9 @@ static int setup_wait(struct ntsync_device *dev,
>  	if (args->pad || (args->flags & ~NTSYNC_WAIT_REALTIME))
>  		return -EINVAL;
>  
> +	if (!args->owner)
> +		return -EINVAL;
> +
>  	if (size >= sizeof(fds))
>  		return -EINVAL;
>  
> 

Reviewed-by: Elizabeth Figura <zfigura@xxxxxxxxxxxxxxx>