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[Bug 2055877] [NEW] pmtu.sh from ubuntu_kselftests_net failed on J-5.15 s390x

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Po-Hsu Lin <2055877@xxxxxxxxxxxxxxxxxx>
Date: Mon, 04 Mar 2024 10:31:36 -0000
Reply-to: Bug 2055877 <2055877@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
Public bug reported:

Issue found on J-5.15.0-96.106 on s390x LPAR s2lp4 (but passed with zVM
kernel07)

This is not a regression, from our test history it can be found failing at least since 5.15.0-81.90. It 
emerges after test case improvement in sru-20240205 (LP: #2043198)

These are the failing cases:
 # TEST: IPv4, bridged vxlan4: PMTU exceptions                         [FAIL]
 # TEST: IPv4, bridged vxlan4: PMTU exceptions - nexthop objects       [FAIL]
 # TEST: IPv4, bridged vxlan6: PMTU exceptions                         [FAIL]
 # TEST: IPv4, bridged vxlan6: PMTU exceptions - nexthop objects       [FAIL]
 # TEST: IPv4, bridged geneve4: PMTU exceptions                        [FAIL]
 # TEST: IPv4, bridged geneve4: PMTU exceptions - nexthop objects      [FAIL]
 # TEST: IPv4, bridged geneve6: PMTU exceptions                        [FAIL]
 # TEST: IPv4, bridged geneve6: PMTU exceptions - nexthop objects      [FAIL]
 # TEST: IPv4, OVS vxlan4: PMTU exceptions                             [FAIL]
 # TEST: IPv4, OVS vxlan4: PMTU exceptions - nexthop objects           [FAIL]
 # TEST: IPv6, OVS vxlan4: PMTU exceptions                             [FAIL]
 # TEST: IPv6, OVS vxlan4: PMTU exceptions - nexthop objects           [FAIL]
 # TEST: IPv4, OVS geneve4: PMTU exceptions                            [FAIL]
 # TEST: IPv4, OVS geneve4: PMTU exceptions - nexthop objects          [FAIL]
 # TEST: IPv6, OVS geneve4: PMTU exceptions                            [FAIL]
 # TEST: IPv6, OVS geneve4: PMTU exceptions - nexthop objects          [FAIL]


Test log:
 Running 'make run_tests -C net TEST_PROGS=pmtu.sh TEST_GEN_PROGS='' TEST_CUSTOM_PROGS='''
 make: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux/tools/testing/selftests/net'
 make --no-builtin-rules ARCH=s390 -C ../../../.. headers_install
 make[1]: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux'
   INSTALL ./usr/include
 make[1]: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux'
 TAP version 13
 1..1
 # selftests: net: pmtu.sh
 # TEST: ipv4: PMTU exceptions                                         [ OK ]
 # TEST: ipv4: PMTU exceptions - nexthop objects                       [ OK ]
 # TEST: ipv6: PMTU exceptions                                         [ OK ]
 # TEST: ipv6: PMTU exceptions - nexthop objects                       [ OK ]
 # TEST: IPv4 over vxlan4: PMTU exceptions                             [ OK ]
 # TEST: IPv4 over vxlan4: PMTU exceptions - nexthop objects           [ OK ]
 # TEST: IPv6 over vxlan4: PMTU exceptions                             [ OK ]
 # TEST: IPv6 over vxlan4: PMTU exceptions - nexthop objects           [ OK ]
 # TEST: IPv4 over vxlan6: PMTU exceptions                             [ OK ]
 # TEST: IPv4 over vxlan6: PMTU exceptions - nexthop objects           [ OK ]
 # TEST: IPv6 over vxlan6: PMTU exceptions                             [ OK ]
 # TEST: IPv6 over vxlan6: PMTU exceptions - nexthop objects           [ OK ]
 # TEST: IPv4 over geneve4: PMTU exceptions                            [ OK ]
 # TEST: IPv4 over geneve4: PMTU exceptions - nexthop objects          [ OK ]
 # TEST: IPv6 over geneve4: PMTU exceptions                            [ OK ]
 # TEST: IPv6 over geneve4: PMTU exceptions - nexthop objects          [ OK ]
 # TEST: IPv4 over geneve6: PMTU exceptions                            [ OK ]
 # TEST: IPv4 over geneve6: PMTU exceptions - nexthop objects          [ OK ]
 # TEST: IPv6 over geneve6: PMTU exceptions                            [ OK ]
 # TEST: IPv6 over geneve6: PMTU exceptions - nexthop objects          [ OK ]
 # TEST: IPv4, bridged vxlan4: PMTU exceptions                         [FAIL]
 # TEST: IPv4, bridged vxlan4: PMTU exceptions - nexthop objects       [FAIL]
 # TEST: IPv6, bridged vxlan4: PMTU exceptions                         [ OK ]
 # TEST: IPv6, bridged vxlan4: PMTU exceptions - nexthop objects       [ OK ]
 # TEST: IPv4, bridged vxlan6: PMTU exceptions                         [FAIL]
 # TEST: IPv4, bridged vxlan6: PMTU exceptions - nexthop objects       [FAIL]
 # TEST: IPv6, bridged vxlan6: PMTU exceptions                         [ OK ]
 # TEST: IPv6, bridged vxlan6: PMTU exceptions - nexthop objects       [ OK ]
 # TEST: IPv4, bridged geneve4: PMTU exceptions                        [FAIL]
 # TEST: IPv4, bridged geneve4: PMTU exceptions - nexthop objects      [FAIL]
 # TEST: IPv6, bridged geneve4: PMTU exceptions                        [ OK ]
 # TEST: IPv6, bridged geneve4: PMTU exceptions - nexthop objects      [ OK ]
 # TEST: IPv4, bridged geneve6: PMTU exceptions                        [FAIL]
 # TEST: IPv4, bridged geneve6: PMTU exceptions - nexthop objects      [FAIL]
 # TEST: IPv6, bridged geneve6: PMTU exceptions                        [ OK ]
 # TEST: IPv6, bridged geneve6: PMTU exceptions - nexthop objects      [ OK ]
 # TEST: IPv4, OVS vxlan4: PMTU exceptions                             [FAIL]
 # TEST: IPv4, OVS vxlan4: PMTU exceptions - nexthop objects           [FAIL]
 # TEST: IPv6, OVS vxlan4: PMTU exceptions                             [FAIL]
 # TEST: IPv6, OVS vxlan4: PMTU exceptions - nexthop objects           [FAIL]
 # TEST: IPv4, OVS vxlan6: PMTU exceptions                             [ OK ]
 # TEST: IPv4, OVS vxlan6: PMTU exceptions - nexthop objects           [ OK ]
 # TEST: IPv6, OVS vxlan6: PMTU exceptions                             [ OK ]
 # TEST: IPv6, OVS vxlan6: PMTU exceptions - nexthop objects           [ OK ]
 # TEST: IPv4, OVS geneve4: PMTU exceptions                            [FAIL]
 # TEST: IPv4, OVS geneve4: PMTU exceptions - nexthop objects          [FAIL]
 # TEST: IPv6, OVS geneve4: PMTU exceptions                            [FAIL]
 # TEST: IPv6, OVS geneve4: PMTU exceptions - nexthop objects          [FAIL]
 # TEST: IPv4, OVS geneve6: PMTU exceptions                            [ OK ]
 # TEST: IPv4, OVS geneve6: PMTU exceptions - nexthop objects          [ OK ]
 # TEST: IPv6, OVS geneve6: PMTU exceptions                            [ OK ]
 # TEST: IPv6, OVS geneve6: PMTU exceptions - nexthop objects          [ OK ]
 # TEST: IPv4 over fou4: PMTU exceptions                               [ OK ]
 # TEST: IPv4 over fou4: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv6 over fou4: PMTU exceptions                               [ OK ]
 # TEST: IPv6 over fou4: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv4 over fou6: PMTU exceptions                               [ OK ]
 # TEST: IPv4 over fou6: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv6 over fou6: PMTU exceptions                               [ OK ]
 # TEST: IPv6 over fou6: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv4 over gue4: PMTU exceptions                               [ OK ]
 # TEST: IPv4 over gue4: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv6 over gue4: PMTU exceptions                               [ OK ]
 # TEST: IPv6 over gue4: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv4 over gue6: PMTU exceptions                               [ OK ]
 # TEST: IPv4 over gue6: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv6 over gue6: PMTU exceptions                               [ OK ]
 # TEST: IPv6 over gue6: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv4 over IPv4: PMTU exceptions                               [ OK ]
 # TEST: IPv4 over IPv4: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv6 over IPv4: PMTU exceptions                               [ OK ]
 # TEST: IPv6 over IPv4: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv4 over IPv6: PMTU exceptions                               [ OK ]
 # TEST: IPv4 over IPv6: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: IPv6 over IPv6: PMTU exceptions                               [ OK ]
 # TEST: IPv6 over IPv6: PMTU exceptions - nexthop objects             [ OK ]
 # TEST: vti6: PMTU exceptions                                         [ OK ]
 # TEST: vti4: PMTU exceptions                                         [ OK ]
 # TEST: vti6: PMTU exceptions (ESP-in-UDP)                            [ OK ]
 # TEST: vti4: PMTU exceptions (ESP-in-UDP)                            [ OK ]
 # TEST: vti6: PMTU exceptions, routed (ESP-in-UDP)                    [ OK ]
 # TEST: vti4: PMTU exceptions, routed (ESP-in-UDP)                    [ OK ]
 # TEST: vti4: default MTU assignment                                  [ OK ]
 # TEST: vti6: default MTU assignment                                  [ OK ]
 # TEST: vti4: MTU setting on link creation                            [ OK ]
 # TEST: vti6: MTU setting on link creation                            [ OK ]
 # TEST: vti6: MTU changes on link changes                             [ OK ]
 # TEST: ipv4: cleanup of cached exceptions                            [ OK ]
 # TEST: ipv4: cleanup of cached exceptions - nexthop objects          [ OK ]
 # TEST: ipv6: cleanup of cached exceptions                            [ OK ]
 # TEST: ipv6: cleanup of cached exceptions - nexthop objects          [ OK ]
 # TEST: ipv4: list and flush cached exceptions                        [ OK ]
 # TEST: ipv4: list and flush cached exceptions - nexthop objects      [ OK ]
 # TEST: ipv6: list and flush cached exceptions                        [ OK ]
 # TEST: ipv6: list and flush cached exceptions - nexthop objects      [ OK ]
 # TEST: ipv4: PMTU exception w/route replace                          [ OK ]
 # TEST: ipv4: PMTU exception w/route replace - nexthop objects        [ OK ]
 # TEST: ipv6: PMTU exception w/route replace                          [ OK ]
 # TEST: ipv6: PMTU exception w/route replace - nexthop objects        [ OK ]
 ok 1 selftests: net: pmtu.sh

** Affects: ubuntu-kernel-tests
     Importance: Undecided
         Status: New


** Tags: 5.15 jammy s390x sru-20240108 sru-20240205 ubuntu-kselftests-net

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https://bugs.launchpad.net/bugs/2055877

Title:
  pmtu.sh from ubuntu_kselftests_net failed on J-5.15 s390x

Status in ubuntu-kernel-tests:
  New

Bug description:
  Issue found on J-5.15.0-96.106 on s390x LPAR s2lp4 (but passed with
  zVM kernel07)

  This is not a regression, from our test history it can be found failing at least since 5.15.0-81.90. It 
  emerges after test case improvement in sru-20240205 (LP: #2043198)

  These are the failing cases:
   # TEST: IPv4, bridged vxlan4: PMTU exceptions                         [FAIL]
   # TEST: IPv4, bridged vxlan4: PMTU exceptions - nexthop objects       [FAIL]
   # TEST: IPv4, bridged vxlan6: PMTU exceptions                         [FAIL]
   # TEST: IPv4, bridged vxlan6: PMTU exceptions - nexthop objects       [FAIL]
   # TEST: IPv4, bridged geneve4: PMTU exceptions                        [FAIL]
   # TEST: IPv4, bridged geneve4: PMTU exceptions - nexthop objects      [FAIL]
   # TEST: IPv4, bridged geneve6: PMTU exceptions                        [FAIL]
   # TEST: IPv4, bridged geneve6: PMTU exceptions - nexthop objects      [FAIL]
   # TEST: IPv4, OVS vxlan4: PMTU exceptions                             [FAIL]
   # TEST: IPv4, OVS vxlan4: PMTU exceptions - nexthop objects           [FAIL]
   # TEST: IPv6, OVS vxlan4: PMTU exceptions                             [FAIL]
   # TEST: IPv6, OVS vxlan4: PMTU exceptions - nexthop objects           [FAIL]
   # TEST: IPv4, OVS geneve4: PMTU exceptions                            [FAIL]
   # TEST: IPv4, OVS geneve4: PMTU exceptions - nexthop objects          [FAIL]
   # TEST: IPv6, OVS geneve4: PMTU exceptions                            [FAIL]
   # TEST: IPv6, OVS geneve4: PMTU exceptions - nexthop objects          [FAIL]

  
  Test log:
   Running 'make run_tests -C net TEST_PROGS=pmtu.sh TEST_GEN_PROGS='' TEST_CUSTOM_PROGS='''
   make: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux/tools/testing/selftests/net'
   make --no-builtin-rules ARCH=s390 -C ../../../.. headers_install
   make[1]: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux'
     INSTALL ./usr/include
   make[1]: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux'
   TAP version 13
   1..1
   # selftests: net: pmtu.sh
   # TEST: ipv4: PMTU exceptions                                         [ OK ]
   # TEST: ipv4: PMTU exceptions - nexthop objects                       [ OK ]
   # TEST: ipv6: PMTU exceptions                                         [ OK ]
   # TEST: ipv6: PMTU exceptions - nexthop objects                       [ OK ]
   # TEST: IPv4 over vxlan4: PMTU exceptions                             [ OK ]
   # TEST: IPv4 over vxlan4: PMTU exceptions - nexthop objects           [ OK ]
   # TEST: IPv6 over vxlan4: PMTU exceptions                             [ OK ]
   # TEST: IPv6 over vxlan4: PMTU exceptions - nexthop objects           [ OK ]
   # TEST: IPv4 over vxlan6: PMTU exceptions                             [ OK ]
   # TEST: IPv4 over vxlan6: PMTU exceptions - nexthop objects           [ OK ]
   # TEST: IPv6 over vxlan6: PMTU exceptions                             [ OK ]
   # TEST: IPv6 over vxlan6: PMTU exceptions - nexthop objects           [ OK ]
   # TEST: IPv4 over geneve4: PMTU exceptions                            [ OK ]
   # TEST: IPv4 over geneve4: PMTU exceptions - nexthop objects          [ OK ]
   # TEST: IPv6 over geneve4: PMTU exceptions                            [ OK ]
   # TEST: IPv6 over geneve4: PMTU exceptions - nexthop objects          [ OK ]
   # TEST: IPv4 over geneve6: PMTU exceptions                            [ OK ]
   # TEST: IPv4 over geneve6: PMTU exceptions - nexthop objects          [ OK ]
   # TEST: IPv6 over geneve6: PMTU exceptions                            [ OK ]
   # TEST: IPv6 over geneve6: PMTU exceptions - nexthop objects          [ OK ]
   # TEST: IPv4, bridged vxlan4: PMTU exceptions                         [FAIL]
   # TEST: IPv4, bridged vxlan4: PMTU exceptions - nexthop objects       [FAIL]
   # TEST: IPv6, bridged vxlan4: PMTU exceptions                         [ OK ]
   # TEST: IPv6, bridged vxlan4: PMTU exceptions - nexthop objects       [ OK ]
   # TEST: IPv4, bridged vxlan6: PMTU exceptions                         [FAIL]
   # TEST: IPv4, bridged vxlan6: PMTU exceptions - nexthop objects       [FAIL]
   # TEST: IPv6, bridged vxlan6: PMTU exceptions                         [ OK ]
   # TEST: IPv6, bridged vxlan6: PMTU exceptions - nexthop objects       [ OK ]
   # TEST: IPv4, bridged geneve4: PMTU exceptions                        [FAIL]
   # TEST: IPv4, bridged geneve4: PMTU exceptions - nexthop objects      [FAIL]
   # TEST: IPv6, bridged geneve4: PMTU exceptions                        [ OK ]
   # TEST: IPv6, bridged geneve4: PMTU exceptions - nexthop objects      [ OK ]
   # TEST: IPv4, bridged geneve6: PMTU exceptions                        [FAIL]
   # TEST: IPv4, bridged geneve6: PMTU exceptions - nexthop objects      [FAIL]
   # TEST: IPv6, bridged geneve6: PMTU exceptions                        [ OK ]
   # TEST: IPv6, bridged geneve6: PMTU exceptions - nexthop objects      [ OK ]
   # TEST: IPv4, OVS vxlan4: PMTU exceptions                             [FAIL]
   # TEST: IPv4, OVS vxlan4: PMTU exceptions - nexthop objects           [FAIL]
   # TEST: IPv6, OVS vxlan4: PMTU exceptions                             [FAIL]
   # TEST: IPv6, OVS vxlan4: PMTU exceptions - nexthop objects           [FAIL]
   # TEST: IPv4, OVS vxlan6: PMTU exceptions                             [ OK ]
   # TEST: IPv4, OVS vxlan6: PMTU exceptions - nexthop objects           [ OK ]
   # TEST: IPv6, OVS vxlan6: PMTU exceptions                             [ OK ]
   # TEST: IPv6, OVS vxlan6: PMTU exceptions - nexthop objects           [ OK ]
   # TEST: IPv4, OVS geneve4: PMTU exceptions                            [FAIL]
   # TEST: IPv4, OVS geneve4: PMTU exceptions - nexthop objects          [FAIL]
   # TEST: IPv6, OVS geneve4: PMTU exceptions                            [FAIL]
   # TEST: IPv6, OVS geneve4: PMTU exceptions - nexthop objects          [FAIL]
   # TEST: IPv4, OVS geneve6: PMTU exceptions                            [ OK ]
   # TEST: IPv4, OVS geneve6: PMTU exceptions - nexthop objects          [ OK ]
   # TEST: IPv6, OVS geneve6: PMTU exceptions                            [ OK ]
   # TEST: IPv6, OVS geneve6: PMTU exceptions - nexthop objects          [ OK ]
   # TEST: IPv4 over fou4: PMTU exceptions                               [ OK ]
   # TEST: IPv4 over fou4: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv6 over fou4: PMTU exceptions                               [ OK ]
   # TEST: IPv6 over fou4: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv4 over fou6: PMTU exceptions                               [ OK ]
   # TEST: IPv4 over fou6: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv6 over fou6: PMTU exceptions                               [ OK ]
   # TEST: IPv6 over fou6: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv4 over gue4: PMTU exceptions                               [ OK ]
   # TEST: IPv4 over gue4: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv6 over gue4: PMTU exceptions                               [ OK ]
   # TEST: IPv6 over gue4: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv4 over gue6: PMTU exceptions                               [ OK ]
   # TEST: IPv4 over gue6: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv6 over gue6: PMTU exceptions                               [ OK ]
   # TEST: IPv6 over gue6: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv4 over IPv4: PMTU exceptions                               [ OK ]
   # TEST: IPv4 over IPv4: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv6 over IPv4: PMTU exceptions                               [ OK ]
   # TEST: IPv6 over IPv4: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv4 over IPv6: PMTU exceptions                               [ OK ]
   # TEST: IPv4 over IPv6: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: IPv6 over IPv6: PMTU exceptions                               [ OK ]
   # TEST: IPv6 over IPv6: PMTU exceptions - nexthop objects             [ OK ]
   # TEST: vti6: PMTU exceptions                                         [ OK ]
   # TEST: vti4: PMTU exceptions                                         [ OK ]
   # TEST: vti6: PMTU exceptions (ESP-in-UDP)                            [ OK ]
   # TEST: vti4: PMTU exceptions (ESP-in-UDP)                            [ OK ]
   # TEST: vti6: PMTU exceptions, routed (ESP-in-UDP)                    [ OK ]
   # TEST: vti4: PMTU exceptions, routed (ESP-in-UDP)                    [ OK ]
   # TEST: vti4: default MTU assignment                                  [ OK ]
   # TEST: vti6: default MTU assignment                                  [ OK ]
   # TEST: vti4: MTU setting on link creation                            [ OK ]
   # TEST: vti6: MTU setting on link creation                            [ OK ]
   # TEST: vti6: MTU changes on link changes                             [ OK ]
   # TEST: ipv4: cleanup of cached exceptions                            [ OK ]
   # TEST: ipv4: cleanup of cached exceptions - nexthop objects          [ OK ]
   # TEST: ipv6: cleanup of cached exceptions                            [ OK ]
   # TEST: ipv6: cleanup of cached exceptions - nexthop objects          [ OK ]
   # TEST: ipv4: list and flush cached exceptions                        [ OK ]
   # TEST: ipv4: list and flush cached exceptions - nexthop objects      [ OK ]
   # TEST: ipv6: list and flush cached exceptions                        [ OK ]
   # TEST: ipv6: list and flush cached exceptions - nexthop objects      [ OK ]
   # TEST: ipv4: PMTU exception w/route replace                          [ OK ]
   # TEST: ipv4: PMTU exception w/route replace - nexthop objects        [ OK ]
   # TEST: ipv6: PMTU exception w/route replace                          [ OK ]
   # TEST: ipv6: PMTU exception w/route replace - nexthop objects        [ OK ]
   ok 1 selftests: net: pmtu.sh

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