5.15 kernel selftest srv6_end_dt4_l3vpn_test.sh failure

[Andrea Righi]

Script srv6_end_dt4_l3vpn_test.sh reports the following failure (upstream issue).

With Jammy 5.15:
 # #######################################################################
 # TEST SECTION: IPv6 routers connectivity test
 # #######################################################################
 #
 # TEST: Routers connectivity: rt-1 -> rt-2 [FAIL]
 #
 # TEST: Routers connectivity: rt-2 -> rt-1 [FAIL]
 # #######################################################################
 # TEST SECTION: SRv6 VPN connectivity test among hosts in the same tenant
 # #######################################################################
 #
 # TEST: Hosts connectivity: hs-t100-1 -> hs-t100-2 (tenant 100) [FAIL]
 #
 # TEST: Hosts connectivity: hs-t100-2 -> hs-t100-1 (tenant 100) [FAIL]
 #
 # TEST: Hosts connectivity: hs-t200-3 -> hs-t200-4 (tenant 200) [FAIL]
 #
 # TEST: Hosts connectivity: hs-t200-4 -> hs-t200-3 (tenant 200) [FAIL]
 #

With Kinetic 5.19:
 # #######################################################################
 # TEST SECTION: IPv6 routers connectivity test
 # #######################################################################
 #
 # TEST: Routers connectivity: rt-1 -> rt-2 [FAIL]
 #
 # TEST: Routers connectivity: rt-2 -> rt-1 [ OK ]
# ########################################################################
 # TEST SECTION: SRv6 VPN connectivity test among hosts in the same tenant
 # #######################################################################
 #
 # TEST: Hosts connectivity: hs-t100-1 -> hs-t100-2 (tenant 100) [FAIL]
 #
 # TEST: Hosts connectivity: hs-t100-2 -> hs-t100-1 (tenant 100) [FAIL]
 #
 # TEST: Hosts connectivity: hs-t200-3 -> hs-t200-4 (tenant 200) [FAIL]
 #
 # TEST: Hosts connectivity: hs-t200-4 -> hs-t200-3 (tenant 200) [FAIL]
 #

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

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 1956562

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.

[Krzysztof Kozlowski (krzk)]

Found on: d2021.10.26/jammy/linux-realtime/5.15.0-1004.4 (appleton-kernel.arm64)

[Po-Hsu Lin (cypressyew)]

Can be found on Jammy OEM-5.17 as well.

[Po-Hsu Lin (cypressyew)]

This issue can be found with Kinetic 5.19 as well.

[Po-Hsu Lin (cypressyew)]

With Lunar 6.2 RISCV, there are just 4 failures in SRv6 VPN connectivity test:

 # TEST: Hosts connectivity: hs-t100-1 -> hs-t100-2 (tenant 100) [FAIL]
 #
 # TEST: Hosts connectivity: hs-t100-2 -> hs-t100-1 (tenant 100) [FAIL]
 #
 # TEST: Hosts connectivity: hs-t200-3 -> hs-t200-4 (tenant 200) [FAIL]
 #
 # TEST: Hosts connectivity: hs-t200-4 -> hs-t200-3 (tenant 200) [FAIL]

All tests in IPv6 routers connectivity test have passed without any issue.

[Utkarsh Gupta (utkarsh)]

Ubuntu 22.10 (Kinetic Kudu) has reached end of life, so this bug will not be fixed for that specific release.

[Po-Hsu Lin (cypressyew)]

This issue has gone on Jammy+, but still visible on Focal 5.15 variants.

[Po-Hsu Lin (cypressyew)]

This might need iproute2 update mentioned in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1961566/comments/2 as well.