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

On Tue, Aug 07, 2018 at 09:11:50PM -0700, Dinesh Subhraveti wrote:

On Mon, Aug 6, 2018 at 7:44 PM, Tycho Andersen [off-list ref] wrote:

quoted

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