Linux Kernel Testing Results by Linaro – Feb 14th Edition

Posted: February 14, 2019 in Uncategorized

The information provided is a wrapup of Linaro’s kernel testing efforts. In particular we are searching for kernel regressions. The report is divided into two parts.

The first involves testing of the Linux kernel using Open Embedded as the user space. Long Term Support kernels (LTS) as well as current stable, mainline and next are uses.

The second part of this report involves testing Linux kernels using Android as the user space. LTS kernels is what are being tested, however these LTS kernels also have the out of tree Android Common patches applied.

Generally but not always new kernel versions are available every week. In the case of testing in Open Embedded, we espeically want to report on RC versions of the LTS kernels within the 48 hour testing window before they are released.

Testing on Open Embedded Linux

Automated reports for kselftest results on -next sending to lkft-triage now

  • Report formatting improved, finished

New work:

  • KV-191 UEFI validation in kernelci
  • Ard Biesheuvel requested support testing UEFI boot mode in kernelci under QEMU. This is looking straight-forward

Bug Status — 59 open bugs

RC Log

2019–02–11

  • 4.9.156, 4.14.99, 4.19.21 — Reported no regressions in <24h
  • 4.20.8 — Reported no regressions in <48h

2019–02–07

  • 4.4.174 — Reported no regressions in <24h

Testing on Android

Discussion :

Android 9 / P LTS-premerge — 4.4, 4.9, 4.14, 4.19

  • 4.19.20 / HiKey — no regressions
  • 4.14.98 / HiKey — no regressions
  • 4.9.155 / HiKey — no regressions
  • 4.4.174 / HiKey — failed to boot — with fix applied, Vts is clean — no regressions and Cts network regressions were still there. The fix as it turns out was the need to be on the latest clang release clang-r349610
  • 4.4.173 / HiKey — 97 cts failures were observed (networking)

Android 9 / P — 4.4, 4.9, 4.14, 4.19 + HiKey

  • 4.4.170 / HiKey — no new data
  • 4.9.154 / HiKey — no regressions
  • 4.14.97 / HiKey — no data received
  • 4.19.19 / HiKey — no data received

AOSP-master-tracking — 4.9, 4.14 4.19 / HiKey & 4.14 / X15

  • A regression was introduced where boot to UI was not successful. Through the course of this week that problem was diagnosed and fixed.
  • Cts CtsLibcoreTestcases — new failure java.lang.IllegalStateException: No SecureRandom implementation was observed. This has introduced approximately ~2600 failures per kernel/board combination.
  • Network tests failed with “Network unreachable” (x15 & HiKey)

Android 8.1–4.4 + HiKey, 4.14 and X15

  • 4.14.94 / X15 — no new data this week
  • 4.4.170 / HiKey — no new data

Bugs

  • No bug discussion this week as YongQin is just back
  • 22 bugs — no change WtW

Plan for the week

  • Examine aosp-master for understand better if we are looking at new test/AOSP changes, infra structure issues, etc
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