canonical-ubuntu-qa team mailing list archive

[Jürg Häfliger <1872652@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1872652

Title:
  reuseport_bpf_cpu in net from ubuntu_kernel_selftests failed on 4.15 /
  5.3 / 5.4 PowerPC

Status in ubuntu-kernel-tests:
  New
Status in linux-signed-hwe package in Ubuntu:
  New

Bug description:
  Issue found on 4.15.0-97-generic X-hwe-4.15 with P8 node modoc:

  $ sudo ./reuseport_bpf_cpu
  ---- IPv4 UDP ----
  send cpu 0, receive socket 0
  send cpu 1, receive socket 1
  send cpu 2, receive socket 2
  send cpu 3, receive socket 3
  send cpu 4, receive socket 4
  send cpu 5, receive socket 5
  send cpu 6, receive socket 6
  send cpu 7, receive socket 7
  send cpu 8, receive socket 8
  send cpu 9, receive socket 9
  send cpu 10, receive socket 10
  send cpu 11, receive socket 11
  send cpu 12, receive socket 12
  send cpu 13, receive socket 13
  send cpu 14, receive socket 14
  send cpu 15, receive socket 15
  send cpu 16, receive socket 16
  send cpu 17, receive socket 17
  send cpu 18, receive socket 18
  send cpu 19, receive socket 19
  send cpu 20, receive socket 20
  send cpu 21, receive socket 21
  send cpu 22, receive socket 22
  send cpu 23, receive socket 23
  send cpu 24, receive socket 24
  send cpu 25, receive socket 25
  send cpu 26, receive socket 26
  send cpu 27, receive socket 27
  send cpu 28, receive socket 28
  send cpu 29, receive socket 29
  send cpu 30, receive socket 30
  send cpu 31, receive socket 31
  send cpu 32, receive socket 32
  send cpu 33, receive socket 33
  send cpu 34, receive socket 34
  send cpu 35, receive socket 35
  send cpu 36, receive socket 36
  send cpu 37, receive socket 37
  send cpu 38, receive socket 38
  send cpu 39, receive socket 39
  send cpu 40, receive socket 40
  send cpu 41, receive socket 41
  send cpu 42, receive socket 42
  send cpu 43, receive socket 43
  send cpu 44, receive socket 44
  send cpu 45, receive socket 45
  send cpu 46, receive socket 46
  send cpu 47, receive socket 47
  send cpu 48, receive socket 48
  send cpu 49, receive socket 49
  send cpu 50, receive socket 50
  send cpu 51, receive socket 51
  send cpu 52, receive socket 52
  send cpu 53, receive socket 53
  send cpu 54, receive socket 54
  send cpu 55, receive socket 55
  send cpu 56, receive socket 56
  send cpu 57, receive socket 57
  send cpu 58, receive socket 58
  send cpu 59, receive socket 59
  send cpu 60, receive socket 60
  send cpu 61, receive socket 61
  send cpu 62, receive socket 62
  send cpu 63, receive socket 63
  send cpu 64, receive socket 64
  send cpu 65, receive socket 65
  send cpu 66, receive socket 66
  send cpu 67, receive socket 67
  send cpu 68, receive socket 68
  send cpu 69, receive socket 69
  send cpu 70, receive socket 70
  send cpu 71, receive socket 71
  send cpu 72, receive socket 72
  send cpu 73, receive socket 73
  send cpu 74, receive socket 74
  send cpu 75, receive socket 75
  send cpu 76, receive socket 76
  send cpu 77, receive socket 77
  send cpu 78, receive socket 78
  send cpu 79, receive socket 79
  send cpu 80, receive socket 80
  send cpu 81, receive socket 81
  send cpu 82, receive socket 82
  send cpu 83, receive socket 83
  send cpu 84, receive socket 84
  send cpu 85, receive socket 85
  send cpu 86, receive socket 86
  send cpu 87, receive socket 87
  ./reuseport_bpf_cpu: failed to pin to cpu: Invalid argument

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.15.0-97-generic 4.15.0-97.98~16.04.1
  ProcVersionSignature: Ubuntu 4.15.0-97.98~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-97-generic ppc64le
  ApportVersion: 2.20.1-0ubuntu2.23
  Architecture: ppc64el
  Date: Tue Apr 14 07:30:49 2020
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcLoadAvg: 0.25 0.22 0.10 1/1267 4640
  ProcLocks:
   1: POSIX  ADVISORY  WRITE 3251 00:17:581 0 EOF
   2: POSIX  ADVISORY  WRITE 2065 00:17:389 0 EOF
   3: POSIX  ADVISORY  WRITE 3254 00:17:595 0 EOF
   4: POSIX  ADVISORY  WRITE 3359 00:17:598 0 EOF
   5: FLOCK  ADVISORY  WRITE 3243 00:17:586 0 EOF
  ProcSwaps:
   Filename				Type		Size	Used	Priority
   /swap.img                               file		8388544	0	-2
  ProcVersion: Linux version 4.15.0-97-generic (buildd@bos02-ppc64el-006) (gcc version 5.4.0 20160609 (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.12)) #98~16.04.1-Ubuntu SMP Tue Apr 7 13:02:13 UTC 2020
  SourcePackage: linux-signed-hwe
  UpgradeStatus: No upgrade log present (probably fresh install)
  cpu_cores: Number of cores present = 20
  cpu_coreson: Number of cores online = 19
  cpu_dscr: DSCR is 0
  cpu_freq:
   min:	3.694 GHz (cpu 159)
   max:	3.695 GHz (cpu 1)
   avg:	3.694 GHz
  cpu_runmode:
   Could not retrieve current diagnostics mode,
   No kernel interface to firmware
  cpu_smt: SMT=8

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