bionic/linux-snapdragon: 4.15.0-1078.85 snap-debs snap:dragonboard-kernel

[Kleber Sacilotto de Souza]

This bug will contain status and test results related to a kernel source (or snap) as stated in the title.

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-- swm properties --
kernel-stable-master-bug: 1874764
phase: Certification Testing
phase-changed: Monday, 04. May 2020 00:06 UTC
reason:
  snap-certification-testing: Stalled -- testing FAILED
snap-name: dragonboard-kernel
variant: snap-debs

[Paul Larson (pwlars)]

We have a cold reboot test in checkbox that seems to be failing with this kernel. The test runs the following commands to try to trigger a cold reboot:
 rtcwake --mode no -s 120
 sleep 5
 rtcwake -m show
 sleep 5
 dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 "org.freedesktop.login1.Manager.PowerOff" boolean:true

However, the system never fully reboots. On the serial console, I just see:
...
Press enter to configure.
[ 137.402465] systemd-shutdown[1]: Failed to wait for process: Protocol error
[ 137.406163] systemd-shutdown[1]: Failed to wait for process: Protocol error

I do have the ability to remotely remove power from the device and restore it, however after doing that, I get an oops on the serial console and the system never comes up.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

The bug was tagged as certification-testing-failed

[Kleber Sacilotto de Souza (kleber-souza)]

The following commits applied to bionic/linux look suspicious:

0519bad6f34f drm/msm: Use the correct dma_sync calls in msm_gem
7318c5ef642b drm/msm: stop abusing dma_map/unmap for cache

[Kleber Sacilotto de Souza (kleber-souza)]

The issue found during Cert-tests is being tracked on bug 1877657.