Martin Pieuchot wrote > On 05/09/16(Mon) 16:39, Jens Sauer wrote: >> Hello OpenBSD Community, >> >> today i played a little bit with cisco routers and IPv6. >> It seems like a plain OpenBSD 6.0 install crashes while >> i reduced the IPv6 (cisco) RA parameters to a really short ammount. >> This behaviour was for me reproducible three times. >> >> All Screenshots and pcap files captured hopefully helps you >> to find/solve the problem. >> >> The crash occurs while i was pinging the R1 router continuosly >> on it's IPv6 address 2001:db8:1000::1. >> While pinging, i changed on R1 the RA plivetime and vlifetime from >> 60/30 to 5/3. After a short time OpenBSD crashed! >> >> I hope i have put enough information inside the .zip file for you to >> figure out the problem. > > Could you try a -current snapshot? A lot of cleanup happened in this > area and I'd like to know if you can still reproduce this crash. > > Thanks, > Martin
Hello Martin, hello OpenBSD Community, I have tested it again with OpenBSD 6.0 current #2250 and could reproducible get the same result (Kernel Crash). Seems like the ping isn't involved because the kernel crash happens even without it after changing the RA p-/vlifetime to 5/3. The crash occurs just a couple of seconds after it. This is a serious bug! An advertising IPv6 Router could crash a connected OpenBSD6 Host (rtsol) just by changing the p-/vltime to short ammounts! Snapshot: cd60.iso 2016-09-05 http://ftp.halifax.rwth-aachen.de/openbsd/snapshots/amd64/ Regards J.Sauer PS: Attachment: new screenshots( kernel crash/trace/ps), pcap and some more infos. OpenBSD6_current_snapshot.zip <http://openbsd-archive.7691.n7.nabble.com/file/n303794/OpenBSD6_current_snapshot.zip> -- View this message in context: http://openbsd-archive.7691.n7.nabble.com/OpenBSD-6-0-IPv6-issue-kernel-crash-tp303736p303794.html Sent from the openbsd dev - bugs mailing list archive at Nabble.com.
