pmtu.sh net selftest fail with PMTU exception wasn't created after exceeding MTU
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
ubuntu-kernel-tests |
New
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Mantic |
Won't Fix
|
Undecided
|
Unassigned | ||
Noble |
New
|
Undecided
|
Unassigned |
Bug Description
Issue found on J-gcp-6.
And can be reproduced with generic kernel on GCP cloud.
This is not a regression but something emerges after the pmtu.sh result parsing logic update, which landed via stable update in sru-20240205 cycle (bug 2043198)
Dive into test history, we can see this failure all the way back to sru-20231030 with M-6.5.0-1010.10 on GCP cloud.
19:48:21 DEBUG| [stdout] # selftests: net: pmtu.sh
19:48:21 DEBUG| [stdout] # TEST: ipv4: PMTU exceptions [ OK ]
19:48:21 DEBUG| [stdout] # TEST: ipv4: PMTU exceptions - nexthop objects [ OK ]
19:48:22 DEBUG| [stdout] # TEST: ipv6: PMTU exceptions [ OK ]
19:48:22 DEBUG| [stdout] # TEST: ipv6: PMTU exceptions - nexthop objects [ OK ]
19:48:23 DEBUG| [stdout] # TEST: ICMPv4 with DSCP and ECN: PMTU exceptions [FAIL]
19:48:23 DEBUG| [stdout] # PMTU exception wasn't created after exceeding MTU
19:48:24 DEBUG| [stdout] # TEST: ICMPv4 with DSCP and ECN: PMTU exceptions - nexthop objects [FAIL]
19:48:24 DEBUG| [stdout] # PMTU exception wasn't created after exceeding MTU
19:48:25 DEBUG| [stdout] # TEST: UDPv4 with DSCP and ECN: PMTU exceptions [FAIL]
19:48:25 DEBUG| [stdout] # PMTU exception wasn't created after exceeding MTU
19:48:25 DEBUG| [stdout] # TEST: UDPv4 with DSCP and ECN: PMTU exceptions - nexthop objects [FAIL]
19:48:25 DEBUG| [stdout] # PMTU exception wasn't created after exceeding MTU
....
Logfile also attached (rt.log)
summary: |
- mtu.sh net selftest fail with PMTU exception wasn't created after + pmtu.sh net selftest fail with PMTU exception wasn't created after exceeding MTU |
tags: | added: 6.5 mantic sru-20240108 ubuntu-kselftests-net |
tags: |
added: sru-20240205 removed: sru-20240108 |
description: | updated |
tags: | added: jammy sru-s20231030 |
tags: | added: gcp |
Ubuntu 23.10 (Mantic Minotaur) has reached end of life, so this bug will not be fixed for that specific release.