Re: [PATCH review 52/85] sunrpc: Properly encode kuids and kgids inauth.unix.gid rpc pipe upcalls.

From: J. Bruce Fields
Date: Fri Feb 15 2013 - 12:01:01 EST

On Wed, Feb 13, 2013 at 03:22:32PM -0800, Eric W. Biederman wrote:
> "J. Bruce Fields" <bfields@xxxxxxxxxxxx> writes:
> > On Wed, Feb 13, 2013 at 02:32:29PM -0800, Eric W. Biederman wrote:
> >> Now looking at the nfs server, seems to be hard coded to only start
> >> in the initial network namespace despite almost having support for
> >> starting in more.
> >
> > Right, Stanislav's got 4 more patches that should finish the job; see
> ><20130201125210.3257.46454.stgit@xxxxxxxxxxxxxxxxxxxxx>
> > and followups. That should make it for 3.9, I just need to review
> > them....
> Ok that is interesting.
> There is an interesting corner case here where an unprivileged user
> can create a user namespace and then can create a network namespace.
> Depending on how we interpret things when Stanislaves patches reach
> there we might have to add:
> if (net->user_ns != &init_user_ns)
> Somewhere appropriate.

I'm assuming that's something that's needed only in kernels that have
*both* Stanislav's patches and yours.

I've committed his patches to

git:// for-3.9

which should also get pulled into next. Let me know if there's another
patch I should take.

> I am a touch concerned about /proc/fs/nfsd/exports after my patches
> and Stanislavs patches both come in. As I think that will allow for
> cases where net->user_ns != &init_userns. But we can cross that bridge
> when we come to it.

OK, let me know of anything I can do to make your life easier....

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at