error when executing code in slice

[Kriti Goel]

Hello

I’m working at Rochester Institute of Technology. We have been testing a custom code which we run on the reserved slice.

The last couple of days, when we executed the code, it seems to generate some spurious message which results in segmentation error. (see below)

This is well tested code (the older version) and it should not be sending the message noted below. Not sure how it is getting generated.

Thanks

Kriti

********************

In buildIPPublishPacket
Got a new label

tier_addr : 3.1.1.2
ipAddr: 192.168.8.0
Sending MESSAGE_TYPE_PUBLISH_IP_ADD message to – eth1 at
endNWSend Called : eth1

Timestamp – 2023-11-03 15:08:18.918812842
Sending MESSAGE_TYPE_PUBLISH_IP_ADD message to – eth2 at
endNWSend Called : eth2

Timestamp – 2023-11-03 15:08:18.918834643
tier_addr : 3.1.1.2
Entries : 1
Message V on : eth2
TEST: MNLR Message V received : eth2

Timestamp – 2023-11-03 15:08:18.918932057if(<wbr />myTierValue==1)
the action is 1 :
totalEntries = 1

TierLen :7 TierAddr: 3.1.1.2

ipLen :4 ipAddr: 192.168.8.0 cidr: 24
Message V on : eth1
TEST: MNLR Message V received : eth1

Timestamp – 2023-11-03 15:08:18.919006498if(<wbr />myTierValue==1)
the action is 1 :
totalEntries = 1

TierLen :7 TierAddr: 3.1.1.2

ipLen :4 ipAddr: 192.168.8.0 cidr: 24
TEST: MNLR Message 12 received : eth1

Timestamp – 2023-11-03 15:08:22.088413454
Message 12 from : 3.1.2.3
Message at tier 1 : Getting the labels for source and destination

Resolving ip for destination label :  3.1.2.3Destination interface is : 255.255.255.255

Tier Not Found

ip : 255.255.255.255

ERROR: SIOCGIFINDEX – Misprint Compatibility: No such device
destinationInterfaceIPAddr : 255.255.255.255
ERROR: SIOCGIFHWADDR – Either interface is not correct or disconnected: No such device
ERROR: SIOCGIFINDEX – Misprint Compatibility
ERROR: SIOCGIFHWADDR – Either interface is not correct or disconnected
ERROR: Send failed

 Segmentation fault

[Komal Thareja]

Hello Kriti,

Could you please share your Slice ID to help debug this issue?

Thanks,
Komal

[Kriti Goel]

Slice id – acadd67f-3129-4fd7-8d95-9bbf60a3100c

[Ilya Baldin]

Your slice is up and running – all VMs and services are up. Please verify that the network interfaces exist under the names you expect in all the VMs. We generally cannot help you with your custom application, but the error suggests the application is trying to use a network interface that for some reason is not there or is not in the ‘up’ state. Please validate the low level functionality of the slice (e.g. the node reachability) before starting your application.

[Kriti Goel]

I am using ssh commands to login into each node, then manually checking each node is up and all the interfaces are up, all interfaces are up then trying to execute my code. Still it is showing me the same error.

[Ilya Baldin]

Hello,

Please inspect your application configuration or try to add debugging output – since this is your custom application we can only provide limited assistance. If a slice is operating as expected at the Operating System level the rest is generally considered experimenter’s responsibility.

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