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 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1512323/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
