On pondělí 25. července 2016 8:41 Florian Westphal wrote: > Michal Kubecek <mkubecek@xxxxxxx> wrote: > > On Thu, Jul 21, 2016 at 09:00:33PM +0200, Jiri Slaby wrote: > > > On 07/21/2016, 08:56 PM, Greg KH wrote: > > > > On Thu, Jul 21, 2016 at 08:36:18AM +0200, Jiri Slaby wrote: > > > >> On 07/14/2016, 10:15 AM, Jiri Slaby wrote: > > > >>> From: Florian Westphal <fw@xxxxxxxxx> > > > >>> > > > >>> 3.12-stable review patch. If anyone has any objections, > > > >>> please let me know. > > > >>> > > > >>> =============== > > > >>> > > > >>> commit 36472341017529e2b12573093cc0f68719300997 upstream. > > > >> > > > >> I am now dropping this one. 3.12.62 will be released without > > > >> that patch. After the performance issue is resolved, it will > > > >> be requeued.> > > > > > > Personally, I think the bug fixes were more important than the > > > > performance issues at this point in time, but it's your call to > > > > make :)> > > > > Ok, but to quote [1]: > > > iptables-restore will take forever (gave up after 10 minutes) > > > > > > I would say it proved itself not to be a performance issue, but > > > rather a functional issue :). Both Pablo and Florian suggested to > > > postpone the patch.> > > Even worse: because of a shared lock which is held for all this > > time, > > this allows (on kernel >= 3.8) an unprivileged user to block similar > > operation in all network namespaces including init_net. > > What lock are you talking about? > > The table lock is aquired after the sanity/translation pass. I meant xt_compat_lock(AF_INET) (or AF_INET6 or NFPROTO_ARP) which is held for almost all of translate_compat_table(). Michal Kubecek -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html