From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexei Starovoitov Subject: Re: [PATCH v2 bpf-next 1/4] bpf: unprivileged BPF access via /dev/bpf Date: Sat, 17 Aug 2019 08:36:54 -0700 Message-ID: <20190817153652.zfcsklt474j72dzm@ast-mbp.dhcp.thefacebook.com> References: <20190806011134.p5baub5l3t5fkmou@ast-mbp> <20190813215823.3sfbakzzjjykyng2@ast-mbp> <201908151203.FE87970@keescook> <20190815234622.t65oxm5mtfzy6fhg@ast-mbp.dhcp.thefacebook.com> <20190816214542.inpt6p655whc2ejw@ast-mbp.dhcp.thefacebook.com> <20190816222252.a7zizw7azkxnv3ot@wittgenstein> <20190817150843.4vsmzpwpcvzndjld@ast-mbp> <61B88085-9FBB-41E6-9783-324E445E428D@ubuntu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <61B88085-9FBB-41E6-9783-324E445E428D@ubuntu.com> Sender: netdev-owner@vger.kernel.org To: Christian Brauner Cc: Andy Lutomirski , Kees Cook , Andy Lutomirski , Song Liu , Networking , bpf , Alexei Starovoitov , Daniel Borkmann , Kernel Team , Lorenz Bauer , Jann Horn , Greg KH , Linux API , LSM List List-Id: linux-api@vger.kernel.org On Sat, Aug 17, 2019 at 05:16:53PM +0200, Christian Brauner wrote: > On August 17, 2019 5:08:45 PM GMT+02:00, Alexei Starovoitov wrote: > >On Sat, Aug 17, 2019 at 12:22:53AM +0200, Christian Brauner wrote: > >> > >> (The one usecase I'd care about is to extend seccomp to do > >pointer-based > >> syscall filtering. Whether or not that'd require (unprivileged) ebpf > >is > >> up for discussion at KSummit.) > > > >Kees have been always against using ebpf in seccomp. I believe he still > >holds this opinion. Until he changes his mind let's stop bringing > >seccomp > >as a use case for unpriv bpf. > > That's why I said "whether or not". > For the record, I do prefer a non-unpriv-ebpf way. > It's still something that will most surely come up in the discussion though. It's very un-kernely way to defer to in-person meetings. If there is anything to discuss please discuss it on the public mailing list.