Re: [PATCH] virtio: nsm: fix raw ioctl copy error path

From: Greg Kroah-Hartman

Date: Fri Jul 17 2026 - 07:40:43 EST


On Wed, Jun 24, 2026 at 07:35:01PM +0200, Yousef Alhouseen wrote:
> nsm_dev_ioctl() uses a common exit path which unlocks nsm->lock.
>
> A failed copy_from_user() reaches that path before the mutex is locked.
>
> Return -EFAULT directly for that pre-lock failure.
>
> Signed-off-by: Yousef Alhouseen <alhouseenyousef@xxxxxxxxx>
> ---
> drivers/misc/nsm.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)

The subject says "virtio" yet that is not what this driver is :(

Can you fix that up and resend?

thanks,

greg k-h