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[Bug 1512323] Re: devices on devel-proposed/ubuntu do not boot with systemd 227-2ubuntu1

 

And here is a disassembly of a locally-built siphash24_compress, built
using the same toolchain as was used for building systemd, which I have
been unable to get to crash with unaligned input.

The code is identical with only differences in the addresses, except for
this rather surprising bit at the end:

 nop
-andeq  r12, r1, r10, lsr #16
-muleq  r1, r4, r9
-andeq  r7, r1, lr, lsr #19
+andeq  r2, r0, r10, ror #25
+               ; <UNDEFINED> instruction: 0x000017b0
+ldrdeq r1, [r0], -r6
 End of assembler dump.
 (gdb) 

Not sure what to make of that.  But the added ldrdeq is in the working
code, not the code that has crashes reported against it; so it doesn't
seem to be relevant.

** Attachment added: "siphash24_compress-working-disassembly.txt"
   https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1512323/+attachment/4519155/+files/siphash24_compress-working-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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