Re: [PATCH] 9p/trans_virtio: bound mount_tag show copy to one page

[Michael Bommarito]

On Wed, Jun 10, 2026 at 11:46 AM Christian Schoenebeck
<linux_oss@xxxxxxxxxxxxx> wrote:
> I would say no, a 64k tag is at least suspicious, if not even hostile.
>
> Therefore: what about simply rejecting the device at probe time if its tag is
> beyond a certain length?

I think that's much cleaner if the user base really can't think of any
legitimate purpose here (or in userspace utils).

FWIW, on a similar Xen issue, we're also talking about blacklisting,
which is one step even further.

Thanks,
Mike