This issue was originally created at 2024-01-23T03:48:42.246Z as a Gitlab issue:
https://gitlab.com/redhat/centos-stream/tests/kernel/kernel-tests/-/issues/1847

1. Snippet of test failure

:: [ 07:35:43 ] :: [ LOG ] :: === Running: net:pmtu.sh
/usr/libexec/kselftests/net /mnt/tests/gerrit-git.engineering.redhat.com/kernel-tests-public/kselftests
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: ICMPv4 with DSCP and ECN: PMTU exceptions [FAIL]
PMTU exception wasn't created after exceeding MTU
TEST: ICMPv4 with DSCP and ECN: PMTU exceptions - nexthop objects [FAIL]
PMTU exception wasn't created after exceeding MTU
TEST: UDPv4 with DSCP and ECN: PMTU exceptions [FAIL]
PMTU exception wasn't created after exceeding MTU
TEST: UDPv4 with DSCP and ECN: PMTU exceptions - nexthop objects [FAIL]
PMTU exception wasn't created after exceeding MTU
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 [ OK ]
TEST: IPv4, bridged vxlan4: PMTU exceptions - nexthop objects [ OK ]
TEST: IPv6, bridged vxlan4: PMTU exceptions [ OK ]
TEST: IPv6, bridged vxlan4: PMTU exceptions - nexthop objects [ OK ]
TEST: IPv4, bridged vxlan6: PMTU exceptions [ OK ]
TEST: IPv4, bridged vxlan6: PMTU exceptions - nexthop objects [ OK ]
TEST: IPv6, bridged vxlan6: PMTU exceptions [ OK ]
TEST: IPv6, bridged vxlan6: PMTU exceptions - nexthop objects [ OK ]
TEST: IPv4, bridged geneve4: PMTU exceptions [ OK ]
TEST: IPv4, bridged geneve4: PMTU exceptions - nexthop objects [ OK ]
TEST: IPv6, bridged geneve4: PMTU exceptions [ OK ]
TEST: IPv6, bridged geneve4: PMTU exceptions - nexthop objects [ OK ]
TEST: IPv4, bridged geneve6: PMTU exceptions [ OK ]
TEST: IPv4, bridged geneve6: PMTU exceptions - nexthop objects [ OK ]
TEST: IPv6, bridged geneve6: PMTU exceptions [ OK ]
TEST: IPv6, bridged geneve6: PMTU exceptions - nexthop objects [ OK ]
ovs_bridge not supported
TEST: IPv4, OVS vxlan4: PMTU exceptions [SKIP]
ovs_bridge not supported
TEST: IPv6, OVS vxlan4: PMTU exceptions [SKIP]
ovs_bridge not supported
TEST: IPv4, OVS vxlan6: PMTU exceptions [SKIP]
ovs_bridge not supported
TEST: IPv6, OVS vxlan6: PMTU exceptions [SKIP]
ovs_bridge not supported
TEST: IPv4, OVS geneve4: PMTU exceptions [SKIP]
ovs_bridge not supported
TEST: IPv6, OVS geneve4: PMTU exceptions [SKIP]
ovs_bridge not supported
TEST: IPv4, OVS geneve6: PMTU exceptions [SKIP]
ovs_bridge not supported
TEST: IPv6, OVS geneve6: PMTU exceptions [SKIP]
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 ]
/mnt/tests/gerrit-git.engineering.redhat.com/kernel-tests-public/kselftests

• • kselftests/16..70 selftests: net:pmtu.sh [FAIL] FAIL Score:1

1. Test logs on DataWarehouse

https://datawarehouse.cki-project.org/kcidb/tests/10962906

1. DataWarehouse issue

https://datawarehouse.cki-project.org/issue/2466

1. Additional details

Will see if it reproduces with the stock kernel and report a bug if needed.

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