Re: PATCH? fix unshare(NEWPID) && vfork()

[Oleg Nesterov]

On 08/20, Andy Lutomirski wrote:
>
> On Tue, Aug 20, 2013 at 12:23 PM, Oleg Nesterov <oleg@xxxxxxxxxx> wrote:
> >
> >> but vfork(); unshare(CLONE_NEWPID) will fail?  (I
> >> admit I haven't tested it.)
> >
> > Do you mean that the child does unshare(CLONE_NEWPID) before exec?
> > It should fail with or without this patch.
> >
>
> Exactly. Shouldn't it succeed?

Ah, I am starting to understand... Sorry, I thought that you were
arguing with the patch I sent.

Yes, perhaps you are right... But this is another isssue, and needs
another change and another discussion. Afaics, we only need to change
the "clone_flags" checks in sys_unshare().

Oleg.

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