Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
06.02.2019 3:55, Ian Lepore wrote: > So your problem was most likely the gps receiver making a bad choice > before it had enough info to make a good choice. It's one of many > reasons why an ntp server should have at least 3 (really, at least 5) > peers, so it can reject obviously-insane data from a single source. > Even when you use a gps to get really accurate local time, you should > have a handful of network peers that can serve as sanity-checkers. And I have and had that moment: driftfile /var/db/ntpd.drift server Time2.Stupi.SE iburst maxpoll 9 server ntp1.sp.se iburst maxpoll 9 server ntp1.mmo.netnod.se iburst maxpoll 9 server ntp1.ptb.de iburst maxpoll 9 server ntp1.ien.it iburst maxpoll 9 server ntp1.sth.netnod.se iburst maxpoll 9 server 127.127.1.0 fudge 127.127.1.0 stratum 10 # Had to comment out following 3 lines after the incident #tos mindist 0.015 #server 127.127.20.1 mode 1 iburst maxpoll 9 prefer #fudge 127.127.20.1 stratum 10 time1 0.000 time2 0.000 flag1 1 flag3 1 refid PPS pool 0.freebsd.pool.ntp.org iburst restrict -4 default kod notrap nomodify nopeer noquery restrict -6 default kod notrap nomodify nopeer noquery restrict 127.0.0.1 restrict ::1 leapfile "/var/db/ntpd.leap-seconds.list" ___ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
On Wed, 2019-02-06 at 03:46 +0700, Eugene Grosbein wrote: > 06.02.2019 3:18, Ian Lepore wrote: > > > > 2019, of course. re@ does NOT make mistakes. What you fail to > > > realize is that NIST was using kqueue to check their atomic > > > clock, and > > > they lost the race. Enjoy the rest of 2020. > > > -Alan > > > > > > > I think you meant that as a joke, but the reality is that NIST > > measures > > their atomic clocks using gear that runs FreeBSD (made by the > > company I > > work for). :) > > I do not know if it is related or not: some months ago my FreeBSD > 11.2-STABLE box > having GPS received attached at /dev/cuau0 for my local ntpd stratum > 1 server > went to late of 2020 insanely. I was forced to comment GPS out of > ntpd config to revive it > but I lost all data in hundreds of local RRD databases and > I found a race in libarchive being a reason why my backups had not > most part of databases. > > I still do not know exact reason and use Internet time source instead > of local GPS. The GPS week number rolls over in April 2019. At $work we have already been seeing glitches in gps receivers as early as last June that were caused by errors in the receivers' firmware that didn't handle the upcoming rollover properly. When a receiver first powers on, it has no real idea what gps era it's in (right now we're in the 2nd, about to roll over to the 3rd). It has to guess, which it mostly does the same way as software does that has to deal with 2-digit years: make a decision based on the current date being before/after some cutoff (like > 70 means 2070), and assume everyone will be running newer firmware before that date arrives. So your problem was most likely the gps receiver making a bad choice before it had enough info to make a good choice. It's one of many reasons why an ntp server should have at least 3 (really, at least 5) peers, so it can reject obviously-insane data from a single source. Even when you use a gps to get really accurate local time, you should have a handful of network peers that can serve as sanity-checkers. -- Ian ___ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
06.02.2019 3:18, Ian Lepore wrote: >> 2019, of course. re@ does NOT make mistakes. What you fail to >> realize is that NIST was using kqueue to check their atomic clock, and >> they lost the race. Enjoy the rest of 2020. >> -Alan >> > > I think you meant that as a joke, but the reality is that NIST measures > their atomic clocks using gear that runs FreeBSD (made by the company I > work for). :) I do not know if it is related or not: some months ago my FreeBSD 11.2-STABLE box having GPS received attached at /dev/cuau0 for my local ntpd stratum 1 server went to late of 2020 insanely. I was forced to comment GPS out of ntpd config to revive it but I lost all data in hundreds of local RRD databases and I found a race in libarchive being a reason why my backups had not most part of databases. I still do not know exact reason and use Internet time source instead of local GPS. ___ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
On Tue, 2019-02-05 at 13:00 -0700, Alan Somers wrote: > On Tue, Feb 5, 2019 at 12:55 PM Shawn Webb wrote: > > > > On Wed, Jan 09, 2019 at 07:40:30PM +, FreeBSD Errata Notices wrote: > > > -BEGIN PGP SIGNED MESSAGE- > > > Hash: SHA512 > > > > > > = > > > FreeBSD-EN-19:05.kqueue Errata > > > Notice > > > The FreeBSD > > > Project > > > > > > Topic: kqueue race condition and kernel panic > > > > > > Category: core > > > Module: kqueue > > > Announced: 2019-01-09 > > > Credits:Mark Johnston > > > Affects:FreeBSD 11.2 > > > Corrected: 2019-11-24 17:11:47 UTC (stable/11, 11.2-STABLE) > > > > Corrected November of 2018 or 2019? ;) > > 2019, of course. re@ does NOT make mistakes. What you fail to > realize is that NIST was using kqueue to check their atomic clock, and > they lost the race. Enjoy the rest of 2020. > -Alan > I think you meant that as a joke, but the reality is that NIST measures their atomic clocks using gear that runs FreeBSD (made by the company I work for). :) -- Ian ___ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
On Tue, Feb 5, 2019 at 12:55 PM Shawn Webb wrote: > > On Wed, Jan 09, 2019 at 07:40:30PM +, FreeBSD Errata Notices wrote: > > -BEGIN PGP SIGNED MESSAGE- > > Hash: SHA512 > > > > = > > FreeBSD-EN-19:05.kqueue Errata > > Notice > > The FreeBSD > > Project > > > > Topic: kqueue race condition and kernel panic > > > > Category: core > > Module: kqueue > > Announced: 2019-01-09 > > Credits:Mark Johnston > > Affects:FreeBSD 11.2 > > Corrected: 2019-11-24 17:11:47 UTC (stable/11, 11.2-STABLE) > > Corrected November of 2018 or 2019? ;) 2019, of course. re@ does NOT make mistakes. What you fail to realize is that NIST was using kqueue to check their atomic clock, and they lost the race. Enjoy the rest of 2020. -Alan ___ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
On Wed, Jan 09, 2019 at 07:40:30PM +, FreeBSD Errata Notices wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA512 > > = > FreeBSD-EN-19:05.kqueue Errata Notice > The FreeBSD Project > > Topic: kqueue race condition and kernel panic > > Category: core > Module: kqueue > Announced: 2019-01-09 > Credits:Mark Johnston > Affects:FreeBSD 11.2 > Corrected: 2019-11-24 17:11:47 UTC (stable/11, 11.2-STABLE) Corrected November of 2018 or 2019? ;) -- Shawn Webb Cofounder and Security Engineer HardenedBSD Tor-ified Signal:+1 443-546-8752 Tor+XMPP+OTR:latt...@is.a.hacker.sx GPG Key ID: 0x6A84658F52456EEE GPG Key Fingerprint: 2ABA B6BD EF6A F486 BE89 3D9E 6A84 658F 5245 6EEE signature.asc Description: PGP signature
Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
On Wed, 9 Jan 2019 at 15:23, Kurt Jaeger wrote: > > Hi! > > > > Credits:Mark Johnston > > > Affects:FreeBSD 11.2 > > > Corrected: 2019-11-24 17:11:47 UTC (stable/11, 11.2-STABLE) > > > > Should this be 2018 or is this yet in the future? > > And why does fbsd-update fail like this: > > The update metadata is correctly signed, but > failed an integrity check. > Cowardly refusing to proceed any further. It appears the updates for 12.0 are broken - under investigation. ___ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
Hi! > > Credits:Mark Johnston > > Affects:FreeBSD 11.2 > > Corrected: 2019-11-24 17:11:47 UTC (stable/11, 11.2-STABLE) > > Should this be 2018 or is this yet in the future? And why does fbsd-update fail like this: The update metadata is correctly signed, but failed an integrity check. Cowardly refusing to proceed any further. -- p...@freebsd.org +49 171 3101372 One year to go ! ___ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
On Wed, 9 Jan 2019 at 15:03, Cy Schubert wrote: > > > Corrected: 2019-11-24 17:11:47 UTC (stable/11, 11.2-STABLE) > > Should this be 2018 or is this yet in the future? Yes, this should be 2018-11-24. Gordon's updating it. ___ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue
In message <20190109194030.dfe3a8...@freefall.freebsd.org>, FreeBSD Errata Noti ces writes: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA512 > > = > FreeBSD-EN-19:05.kqueue Errata Notice > The FreeBSD Project > > Topic: kqueue race condition and kernel panic > > Category: core > Module: kqueue > Announced: 2019-01-09 > Credits:Mark Johnston > Affects:FreeBSD 11.2 > Corrected: 2019-11-24 17:11:47 UTC (stable/11, 11.2-STABLE) Should this be 2018 or is this yet in the future? > 2019-01-09 18:57:38 UTC (releng/11.2, 11.2-RELEASE-p8) > [...] -- Cheers, Cy Schubert FreeBSD UNIX: Web: http://www.FreeBSD.org The need of the many outweighs the greed of the few. ___ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
