ubuntu-kernel-tests

Regression for net:vrf-xfrm-tests.sh with 5.15 kernel on ARM64 node scobee-kernel

Bug #2039816 reported by Po-Hsu Lin
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
ubuntu-kernel-tests
New
Undecided
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linux (Ubuntu)
Incomplete
Undecided
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Jammy
Incomplete
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Bug Description

Issue found on ARM64 node scobee-kernel with:
 * J-5.15.0-86.95 lowlatency
 * 5.15.0-85.95~20.04.2 generic
 * F-5.15.0-86.95~20.04.1 lowlatency
 * F-5.15.0-87.96~20.04.1 lowlatency-64k

Test failed with:
$ sudo ./vrf-xfrm-tests.sh

No qdisc on VRF device
TEST: IPv4 no xfrm policy [ OK ]
TEST: IPv6 no xfrm policy [ OK ]
TEST: IPv4 xfrm policy based on address [FAIL]
TEST: IPv6 xfrm policy based on address [FAIL]
TEST: IPv6 xfrm policy with VRF in selector [ OK ]
TEST: IPv4 xfrm policy with xfrm device [FAIL]
TEST: IPv6 xfrm policy with xfrm device [FAIL]

netem qdisc on VRF device
TEST: IPv4 no xfrm policy [ OK ]
TEST: IPv6 no xfrm policy [ OK ]
TEST: IPv4 xfrm policy based on address [FAIL]
TEST: IPv6 xfrm policy based on address [FAIL]
TEST: IPv6 xfrm policy with VRF in selector [ OK ]
TEST: IPv4 xfrm policy with xfrm device [FAIL]
TEST: IPv6 xfrm policy with xfrm device [FAIL]

Tests passed: 6
Tests failed: 8

And this issue does not exist with the following combination:
* F-generic-5.15.0-86.96~20.04.1 howzit-kernel
* F-generic-5.15.0-86.96~20.04.1 wright-kernel
* F-generic-64k-5.15.0-85.95~20.04.2 kopter-kernel
* F-lowlatency-5.15.0-88.98~20.04.1 howzit-kernel
* F-lowlatency-5.15.0-85.94 starmie-kernel
* F-lowlatency-64k-5.15.0-85.94~20.04.1 howzit-kernel
* J-lowlatency-64k-5.15.0-85.94 starmie-kernel
* J-lowlatency-64k-5.15.0-86.95 howzit-kernel

So it looks like this is hardware related.

And the cause seems to be commit cb43c60 (" selftests: net: vrf-xfrm-tests: change authentication and encryption algos"), which lands on the Jammy tree since:
 * Ubuntu-5.15.0-85.95
 * Ubuntu-lowlatency-5.15.0-85.94

With this commit reverted, this test can pass on node scobee-kernel with 5.15.0-87-lowlatency-64k

See original description
Po-Hsu Lin (cypressyew)
summary: - Regression for net:vrf-xfrm-tests.sh with F-hwe-5.15 lowlatency on
- scobee-kernel
+ Regression for net:vrf-xfrm-tests.sh with 5.15 kernel on scobee-kernel
summary: - Regression for net:vrf-xfrm-tests.sh with 5.15 kernel on scobee-kernel
+ Regression for net:vrf-xfrm-tests.sh with 5.15 kernel on ARM64 node
+ scobee-kernel
tags: added: 5.15 arm64 focal jammy ubuntu-kernel-selftests
description: updated
Revision history for this message
Po-Hsu Lin (cypressyew) wrote :

With 5.15.0-84-generic-64k on scobee-kernel, with test case patched with commit cb43c60 it is still failing. Without that commit the test will pass.

It shows this is related to commit cb43c60, not the kernel function itself.

Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Missing required logs.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 2039816

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
Changed in linux (Ubuntu Jammy):
status: New → Incomplete
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