Re: [bug report] net: udp_tunnel_nic: reference count leak during network namespace migration

On Thu, Aug 6, 2026 at 3:18 PM Tetsuo Handa
<[email protected]> wrote:
>
> Ping?
>

Is this a dup of
https://lore.kernel.org/netdev/[email protected]/T/#u
?

If not, please send a patch.

> On 2026/07/18 21:03, Tetsuo Handa wrote:
> > Description:
> >
> >   syzbot is reporting a reference count leak when a netdevsim device configured with
> >   UDP tunnel offloads is moved to another network namespace, and then the target
> >   namespace is destroyed.
> >
> > Cause of the Leak:
> >
> >   The root cause is a structural mismatch between the namespace migration logic in
> >   __dev_change_net_namespace() and the unregistration path in udp_tunnel_nic_unregister().
> (...snipped...)
>