Segmentation fault

[Ivo Smits]

Hello,

Last night there appears to have been a loop in the network of my colocation provider. Somehow this loop/packet flood caused tinc to crash. I guess that, even though it seems to have restarted, it did not manage to reconnect/re-open the tap device/something else went wrong; the machine itself was communicating with the internet but I could not access it over the VPN.

The most interesting/dangerous thing is probably the crash - a segmentation fault:

Jun 21 03:48:33 Delta tinc.ufonet[2366]: Old connection_t for Frosty (84.81.194.73 port 43158) status 00d0 still lingering, deleting...
Jun 21 03:48:33 Delta tinc.ufonet[2366]: Old connection_t for Jupiter (82.170.170.203 port 655) status 00d0 still lingering, deleting...
Jun 21 03:48:54 Delta tinc.ufonet[2366]: Metadata socket read error for Frosty (84.81.194.73 port 655): Connection reset by peer
Jun 21 03:48:58 Delta tinc.ufonet[2366]: Old connection_t for Frosty (84.81.194.73 port 655) status 00d1 still lingering, deleting...
Jun 21 03:50:22 Delta tinc.anonet[2378]: Old connection_t for p28301016 (87.219.62.243 port 657) status 0010 still lingering, deleting...
Jun 21 03:52:10 Delta tinc.ufonet[2366]: Received UDP packet from unknown source 82.170.170.203 port 655
Jun 21 03:52:10 Delta tinc.ufonet[2366]: Old connection_t for Frosty (84.81.194.73 port 655) status 00d0 still lingering, deleting...
Jun 21 03:52:10 Delta tinc.ufonet[2366]: Old connection_t for Jupiter (82.170.170.203 port 655) status 00d0 still lingering, deleting...
Jun 21 03:52:10 Delta tinc.ufonet[2366]: Got fatal signal 11 (Segmentation fault)
Jun 21 03:52:10 Delta tinc.ufonet[2366]: Checkpoint trace: meta.c:42 <- protocol.c:76 <- protocol_key.c:91 <- net_packet.c:302 <- net_packet.c:69 <- event.c:106 <- event.c:115 <- protocol.c:238 <- route.c:140 <- conf.c:82 <- conf.c:82 <- conf.c:82 <- conf.c:82 <- conf.c:67 <- connection.c:79 <- connection.c:130...
Jun 21 03:52:10 Delta tinc.ufonet[2366]: Trying to re-execute in 5 seconds...
Jun 21 03:52:27 Delta tinc.ufonet[24455]: tincd 1.0.9 (Dec 26 2008 14:50:38) starting, debug level 0
Jun 21 03:52:27 Delta tinc.ufonet[24455]: /dev/net/tun is a Linux tun/tap device (tap mode)
Jun 21 03:52:45 Delta tinc.ufonet[24455]: Ready
Jun 21 03:57:35 Delta tinc.ufonet[24455]: Old connection_t for <unknown> (84.81.194.73 port 35426) status 0010 still lingering, deleting...
Jun 21 03:57:35 Delta tinc.ufonet[24455]: Received UDP packet from unknown source 82.170.170.203 port 655

I'm using tinc version 1.0.9 from the Debian testing repository (tinc versie 1.0.9 (gemaakt Dec 26 2008 14:50:41, protocol 17)).

Unfortunately I don't have any other logs. I hope this may be helpful somehow.

Ivo
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