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[Jacob Martin <2058441@xxxxxxxxxxxxxxxxxx>]

The node hinyari has online NUMA nodes 2-8 that have no associated CPUs.
The test succeeds for node 0 and skips offline node 1. Once the test
reaches node 2, libnuma's call to sched_setaffinity provides an empty
mask (node 2 has no CPUs), resulting in an expected EINVAL return code.

I'm not yet sure what nodes 2-8 represent, nor why these seemingly empty
nodes are deemed online.

ubuntu@hinyari:~$ numactl -H
available: 8 nodes (0,2-8)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
node 0 size: 490285 MB
node 0 free: 486132 MB
node 2 cpus:
node 2 size: 0 MB
node 2 free: 0 MB
node 3 cpus:
node 3 size: 0 MB
node 3 free: 0 MB
node 4 cpus:
node 4 size: 0 MB
node 4 free: 0 MB
node 5 cpus:
node 5 size: 0 MB
node 5 free: 0 MB
node 6 cpus:
node 6 size: 0 MB
node 6 free: 0 MB
node 7 cpus:
node 7 size: 0 MB
node 7 free: 0 MB
node 8 cpus:
node 8 size: 0 MB
node 8 free: 0 MB
node distances:
node   0   2   3   4   5   6   7   8 
  0:  10  80  80  80  80  80  80  80 
  2:  80  10  255  255  255  255  255  255 
  3:  80  255  10  255  255  255  255  255 
  4:  80  255  255  10  255  255  255  255 
  5:  80  255  255  255  10  255  255  255 
  6:  80  255  255  255  255  10  255  255 
  7:  80  255  255  255  255  255  10  255 
  8:  80  255  255  255  255  255  255  10

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https://bugs.launchpad.net/bugs/2058441

Title:
  kselftest net:reuseport_bpf_numa fails on J-nvidia-6.5 on ARM64 node
  hinyari (failed to pin to node)

Status in ubuntu-kernel-tests:
  New

Bug description:
  This issue can be found exclusively on ARM64 node "hinyari" with:
    * J-nvidia-6.5.0-1010.10
    * J-nvidia-6.5.0-1011.11 
    * J-nvidia-6.5.0-1013.13 

  The failure message is identical to bug 2029273, but I think it's
  better to file a new one here.

  Test log:
   Running 'make run_tests -C net TEST_PROGS=reuseport_bpf_numa TEST_GEN_PROGS='' TEST_CUSTOM_PROGS='''
   make: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux/tools/testing/selftests/net'
   TAP version 13
   1..1
   # timeout set to 0
   # selftests: net: reuseport_bpf_numa
   # ---- IPv4 UDP ----
   # send node 0, receive socket 0
   # ./reuseport_bpf_numa: failed to pin to node: Invalid argument
   not ok 1 selftests: net: reuseport_bpf_numa # exit=1
   make: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux/tools/testing/selftests/net'

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