Re: [PATCH v2 3/4] seccomp: add a way to get a listener fd from ptrace

Tycho Andersen
2018-05-17T15:59:39Z

On Thu, May 17, 2018 at 09:57:33AM -0600, Tycho Andersen wrote:
> On Thu, May 17, 2018 at 05:41:39PM +0200, Oleg Nesterov wrote:
> > and since init_listener() does __get_seccomp_filter() on sucess, it is needed
> > uncondtitionally?
>
> I think there does need to be a __get_seccomp_filter() on success in
> init_listener(), because it's paired with the __put_seccomp_filter in
> seccomp_notify_release. The listener fd has a reference to the filter,
> and that shouldn't go away until after the fd is freed.

Oh, sorry. I see what you meant here. Yes, it should be unconditional.

Tycho