Re: [PATCH v2 1/2] nfs: don't share pNFS DS connections between net namespaces

[Benjamin Coddington]

On 10 Apr 2025, at 16:42, Jeff Layton wrote:

> Currently, different NFS clients can share the same DS connections, even
> when they are in different net namespaces. If a containerized client
> creates a DS connection, another container can find and use it. When the
> first client exits, the connection will which can lead to stalls in

                                         ^^ close ?

> other clients.
>
> Add a net namespace pointer to struct nfs4_pnfs_ds, and compare those
> value to the caller's netns in _data_server_lookup_locked() when
> searching for a nfs4_pnfs_ds to match.
>
> Reported-by: Omar Sandoval <osandov@xxxxxxxxxxx>
> Reported-by: Sargun Dillon <sargun@xxxxxxxxx>
> Closes: https://lore.kernel.org/linux-nfs/Z_ArpQC_vREh_hEA@telecaster/
> Tested-by: Sargun Dillon <sargun@xxxxxxxxx>
> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>

Looks good to me,

Reviewed-by: Benjamin Coddington <bcodding@xxxxxxxxxx>

Ben