Re: [PATCH v4 0/4] seccomp trap to userspace

[Tycho Andersen]

On Tue, Aug 07, 2018 at 09:11:50PM -0700, Dinesh Subhraveti wrote:
> On Mon, Aug 6, 2018 at 7:44 PM, Tycho Andersen <tycho@xxxxxxxx> wrote:
> > Hi all,
> >
> > Dinesh Subhraveti has claimed that some part of this series might be
> > patented. While he has not furnished me with anything to confirm this
> > claim, I'll put this series on hold.
> 
> For the sake of everyone's clarity, there is no patent or intellectual
> property issue here and we'd like to see this feature in the kernel.  I did
> indicate that there is a patent related to the mechanism underlying this
> patch set but that is completely incidental to the issue here.  We have
> filed that patent only for the purpose of defense and have no interest or
> resources to go after infringements.  As such, I spoke about the approach,
> it's value for networking and a few possible ways of implementing it in the
> kernel at Linux Plumbers Conference 2017.
> 
> As a contractor and a member of our team at AppSwitch (FKA Fermat), Tycho
> Andersen helped implement a fully user space version of system call trap
> mechanism based on seccomp / fd-passing and participated in our team
> discussions about upstreaming a kernel version of the feature.  Given that
> context, we were taken aback that he posted the v1 patch set without
> letting us know and without any mention of AppSwitch in the post even
> though he was still under contract at that time.

It seems we disagree on the series of events, but agree that this
patchset should move forward. I'll work on preparing a v5.

Thanks!

Tycho