fib_nexthops.sh in net of ubuntu_kernel_selftests failed on F-ibm-5.4

[Po-Hsu Lin]

Issue found on Focal ibm 5.4.0-1007.8

Test failed with:
# TEST: IPv4 route with MPLS encap [FAIL]
# TEST: IPv4 route with MPLS encap - check [FAIL]
# TEST: IPv4 route with MPLS encap and v6 gateway [FAIL]
# TEST: IPv4 route with MPLS encap, v6 gw - check [FAIL]

Test log:
 # selftests: net: fib_nexthop_multiprefix.sh
 # TEST: IPv4: host 0 to host 1, mtu 1300 [ OK ]
 # TEST: IPv6: host 0 to host 1, mtu 1300 [ OK ]
 #
 # TEST: IPv4: host 0 to host 2, mtu 1350 [ OK ]
 # TEST: IPv6: host 0 to host 2, mtu 1350 [ OK ]
 #
 # TEST: IPv4: host 0 to host 3, mtu 1400 [ OK ]
 # TEST: IPv6: host 0 to host 3, mtu 1400 [ OK ]
 #
 # TEST: IPv4: host 0 to host 1, mtu 1300 [ OK ]
 # TEST: IPv6: host 0 to host 1, mtu 1300 [ OK ]
 #
 # TEST: IPv4: host 0 to host 2, mtu 1350 [ OK ]
 # TEST: IPv6: host 0 to host 2, mtu 1350 [ OK ]
 #
 # TEST: IPv4: host 0 to host 3, mtu 1400 [ OK ]
 # TEST: IPv6: host 0 to host 3, mtu 1400 [ OK ]
 ok 33 selftests: net: fib_nexthop_multiprefix.sh
 # selftests: net: fib_nexthops.sh
 #
 # Basic functional tests
 # ----------------------
 # TEST: List with nothing defined [ OK ]
 # TEST: Nexthop get on non-existent id [ OK ]
 # TEST: Nexthop with no device or gateway [ OK ]
 # TEST: Nexthop with down device [ OK ]
 # TEST: Nexthop with device that is linkdown [ OK ]
 # TEST: Nexthop with device only [ OK ]
 # TEST: Nexthop with duplicate id [ OK ]
 # TEST: Blackhole nexthop [ OK ]
 # TEST: Blackhole nexthop with other attributes [ OK ]
 # TEST: Create group [ OK ]
 # TEST: Create group with blackhole nexthop [ OK ]
 # TEST: Create multipath group where 1 path is a blackhole [ OK ]
 # TEST: Multipath group can not have a member replaced by blackhole [ OK ]
 # TEST: Create group with non-existent nexthop [ OK ]
 # TEST: Create group with same nexthop multiple times [ OK ]
 # TEST: Replace nexthop with nexthop group [ OK ]
 # TEST: Replace nexthop group with nexthop [ OK ]
 # TEST: Nexthop group and device [ OK ]
 # TEST: Test proto flush [ OK ]
 # TEST: Nexthop group and blackhole [ OK ]
 #
 # IPv4 functional
 # ----------------------
 # TEST: Create nexthop with id, gw, dev [ OK ]
 # TEST: Get nexthop by id [ OK ]
 # TEST: Delete nexthop by id [ OK ]
 # TEST: Create nexthop - gw only [ OK ]
 # TEST: Create nexthop - invalid gw+dev combination [ OK ]
 # TEST: Create nexthop - gw+dev and onlink [ OK ]
 # TEST: Nexthops removed on admin down [ OK ]
 #
 # IPv4 groups functional
 # ----------------------
 # TEST: Create nexthop group with single nexthop [ OK ]
 # TEST: Get nexthop group by id [ OK ]
 # TEST: Delete nexthop group by id [ OK ]
 # TEST: Nexthop group with multiple nexthops [ OK ]
 # TEST: Nexthop group updated when entry is deleted [ OK ]
 # TEST: Nexthop group with weighted nexthops [ OK ]
 # TEST: Weighted nexthop group updated when entry is deleted [ OK ]
 # TEST: Nexthops in groups removed on admin down [ OK ]
 # TEST: Multiple groups with same nexthop [ OK ]
 # TEST: Nexthops in group removed on admin down - mixed group [ OK ]
 # TEST: Nexthop group can not have a group as an entry [ OK ]
 # TEST: Nexthop group with a blackhole entry [ OK ]
 # TEST: Nexthop group can not have a blackhole and another nexthop [ OK ]
 # TEST: IPv6 nexthop with IPv4 route [ OK ]
 # TEST: IPv6 nexthop with IPv4 route [ OK ]
 # TEST: IPv4 route with IPv6 gateway [ OK ]
 # TEST: IPv4 route with invalid IPv6 gateway [ OK ]
 #
 # IPv4 functional runtime
 # -----------------------
 # TEST: Route add [ OK ]
 # TEST: Route delete [ OK ]
 # TEST: Route add - scope conflict with nexthop [ OK ]
 # TEST: Nexthop replace with invalid scope for existing route [ OK ]
 # TEST: Basic ping [ OK ]
 # TEST: Ping - multipath [ OK ]
 # TEST: Ping - multiple default routes, nh first [ OK ]
 # TEST: Ping - multiple default routes, nh second [ OK ]
 # TEST: Ping - blackhole [ OK ]
 # TEST: Ping - blackhole replaced with gateway [ OK ]
 # TEST: Ping - gateway replaced by blackhole [ OK ]
 # TEST: Ping - group with blackhole [ OK ]
 # TEST: Ping - group blackhole replaced with gateways [ OK ]
 # TEST: IPv4 route with device only nexthop [ OK ]
 # TEST: IPv4 multipath route with nexthop mix - dev only + gw [ OK ]
 # TEST: IPv6 nexthop with IPv4 route [ OK ]
 # TEST: IPv4 route with mixed v4-v6 multipath route [ OK ]
 # TEST: IPv6 nexthop with IPv4 route [ OK ]
 # TEST: IPv4 route with IPv6 gateway [ OK ]
 # TEST: IPv4 route with MPLS encap [FAIL]
 # TEST: IPv4 route with MPLS encap - check [FAIL]
 # TEST: IPv4 route with MPLS encap and v6 gateway [FAIL]
 # TEST: IPv4 route with MPLS encap, v6 gw - check [FAIL]
 #
 # IPv6
 # ----------------------
 # TEST: Create nexthop with id, gw, dev [ OK ]
 # TEST: Get nexthop by id [ OK ]
 # TEST: Delete nexthop by id [ OK ]
 # TEST: Create nexthop - gw only [ OK ]
 # TEST: Create nexthop - invalid gw+dev combination [ OK ]
 # TEST: Create nexthop - gw+dev and onlink [ OK ]
 # TEST: Nexthops removed on admin down [ OK ]
 #
 # IPv6 groups functional
 # ----------------------
 # TEST: Create nexthop group with single nexthop [ OK ]
 # TEST: Get nexthop group by id [ OK ]
 # TEST: Delete nexthop group by id [ OK ]
 # TEST: Nexthop group with multiple nexthops [ OK ]
 # TEST: Nexthop group updated when entry is deleted [ OK ]
 # TEST: Nexthop group with weighted nexthops [ OK ]
 # TEST: Weighted nexthop group updated when entry is deleted [ OK ]
 # TEST: Nexthops in groups removed on admin down [ OK ]
 # TEST: Multiple groups with same nexthop [ OK ]
 # TEST: Nexthops in group removed on admin down - mixed group [ OK ]
 # TEST: Nexthop group can not have a group as an entry [ OK ]
 # TEST: Nexthop group with a blackhole entry [ OK ]
 # TEST: Nexthop group can not have a blackhole and another nexthop [ OK ]
 #
 # IPv6 functional runtime
 # -----------------------
 # TEST: Route add [ OK ]
 # TEST: Route delete [ OK ]
 # TEST: Ping with nexthop [ OK ]
 # TEST: Ping - multipath [ OK ]
 # TEST: Ping - blackhole [ OK ]
 # TEST: Ping - blackhole replaced with gateway [ OK ]
 # TEST: Ping - gateway replaced by blackhole [ OK ]
 # TEST: Ping - group with blackhole [ OK ]
 # TEST: Ping - group blackhole replaced with gateways [ OK ]
 # TEST: IPv6 route with device only nexthop [ OK ]
 # TEST: IPv6 multipath route with nexthop mix - dev only + gw [ OK ]
 # TEST: IPv6 route can not have a v4 gateway [ OK ]
 # TEST: Nexthop replace - v6 route, v4 nexthop [ OK ]
 # TEST: Nexthop replace of group entry - v6 route, v4 nexthop [ OK ]
 # TEST: Nexthop with default route and rpfilter [ OK ]
 # TEST: Nexthop with multipath default route and rpfilter [ OK ]
 #
 # Tests passed: 99
 # Tests failed: 4
 not ok 34 selftests: net: fib_nexthops.sh # exit=1

This is failing with 5.4.0-1006 as well. So this is not a regression.