test_verifier from ubuntu_bpf failed on B-hwe-edge 5.3 / 5.4 ARM64

[Po-Hsu Lin]

Issue found on a Moonshot node with B-hwe-edge 5.3 kernel,
test failed with:
  #13/p valid read map access into a read-only array 2 FAIL retval 65507 != -29 (run 1/1)
  verification time 41 usec
  stack depth 8
  processed 14 insns (limit 1000000) max_states_per_insn 0 total_states 1 peak_states 1 mark_read 1

This is the only test failing in this test suite:
  Summary: 1547 PASSED, 0 SKIPPED, 1 FAILED

[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 1845870

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.

[Po-Hsu Lin (cypressyew)]

Still seeing this on B-GCP-5.3
5.3.0-1020.22~18.04.1

[Po-Hsu Lin (cypressyew)]

Spotted on 5.4.0-42.46~18.04.1
With ARM64 node hotdog-kernel / wright-kernel

[Po-Hsu Lin (cypressyew)]

Spotted on 5.4.0-44.48-generic
With ARM64 node hotdog-kernel / ms10-34-mcdivittB0-kernel

[Francis Ginther (fginther)]

Seen with Bionic linux-aws 5.4.0-1026.26~18.04.1 and 5.4.0-1025.25~18.04.1 on arm64.

[Thadeu Lima de Souza Cascardo (cascardo)]

Upstream commit 6185266c5a853bb0f2a459e3ff594546f277609b ("selftests/bpf: Mask bpf_csum_diff() return value to 16 bits in test_verifier") would likely fix this and has been applied to 5.4, 5.8 and 5.11.

5.11 was already released with it.

Ubuntu-5.4.0-73.82, from the cycle that has just ended, should have this fixed too.

Ubuntu-5.8.0-54.61, though, is still going to be promoted to -proposed. But it should have this fixed.

[Thadeu Lima de Souza Cascardo (cascardo)]

http://10.246.72.47/5.4.0-1047.49-aws/focal-linux-aws-aws-arm64-5.4.0-a1.2xlarge-ubuntu_bpf/ubuntu_bpf/results/ubuntu_bpf.test_verifier/debug/ubuntu_bpf.test_verifier.DEBUG.html

28. 04/29 20:24:36 DEBUG| utils:0153| [stdout] #13/p valid read map access into a read-only array 2 FAIL retval 65507 != -29 (run 1/1)
29. 04/29 20:24:36 DEBUG| utils:0153| [stdout] verification time 26 usec
30. 04/29 20:24:36 DEBUG| utils:0153| [stdout] stack depth 8
31. 04/29 20:24:36 DEBUG| utils:0153| [stdout] processed 14 insns (limit 1000000) max_states_per_insn 0 total_states 1 peak_states 1 mark_read 1

http://10.246.72.47/5.4.0-1048.50-aws/focal-linux-aws-aws-arm64-5.4.0-a1.2xlarge-ubuntu_bpf/ubuntu_bpf/results/ubuntu_bpf.test_verifier/debug/ubuntu_bpf.test_verifier.DEBUG.html

05/04 15:51:01 DEBUG| utils:0153| [stdout] #13/p valid read map access into a read-only array 2 OK