touch-packages team mailing list archive

[Steve Langasek <steve.langasek@xxxxxxxxxxxxx>]

I've assembled a test case for systemd, but I can't get it to fail on
the armhf porter box or under qemu.  Architecture documentation suggests
that unaligned 64-bit reads/writes with ldrd/strd are allowed on ARMv7.
But an unaligned access is still exactly what SIGBUS is supposed to
represent, which leaves it unclear what's happening here.

The crash has been reported to errors.u.c from a variety of devices,
running a variety of kernels; including mako, flo, and some devices not
running phone kernels.

Attaching the disassembly of siphash24_compressed from the udevd in the
archive, for reference.

** Attachment added: "siphash24_compress-broken-disassembly.txt"
   https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1512323/+attachment/4519149/+files/siphash24_compress-broken-disassembly.txt

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https://bugs.launchpad.net/bugs/1512323

Title:
  devices on devel-proposed/ubuntu do not boot with systemd 227-2ubuntu1

Status in Canonical System Image:
  Confirmed
Status in systemd package in Ubuntu:
  In Progress

Bug description:
  Last known good build: mako devel-proposed/ubuntu r336

  Affects builds from devel-proposed/ubuntu starting from first Xenial
  build.

  Test Case:
  Boot in fastboot mode and flash with:
  $ ubuntu-device-flash -v touch --channel=ubuntu-touch/devel-proposed/ubuntu --bootstrap
  or 
  upgrade from 336 to latest devel-proposed image

  Actual Result
  During a successful flashing operation of a device from fastboot, it boots once into recovery, then reboots and a rotating Ubuntu logo is displayed while the devices is being flashed.
  With this issue, on the second stage of the flash the phone is stuck on the vendor's logo (google or bq) and the rotating ubuntu logo is never displayed.

  Same problem on krillin devel-proposed/krillin.en 235

  Workaround:
  Boot into recovery, mount the system partition and downgrade systemd to 225-1ubuntu9

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