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[Jürg Häfliger <1946486@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1946486

Title:
  Unable to reboot ARM64 node with 5.15 realtime

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Hirsute:
  Invalid

Bug description:
  It looks like this issue is affecting some ARM64 bare metal node:
    * helo-kernel 2 failed out of 2 attempts
    * kuzzle 11 failed out of 13 attempts (as far as I can recall 2 deployments failed early, the system was not deployed at all, so probably we can call it 9 failed)

  The boot test will fail, the system was unable to reboot with the
  5.11.0-27-realtime kernel, here is the steps (integrated with the
  deployment script)

  1. Deploy this node with Hirsute
  2. Install the 5.11.0-27-realtime kernel and set to boot with this kernel by using the boot-kernel-simple in ckct. Reboot
  3. System can boot with 5.11.0-27-realtime, reboot again to make sure it's OK

  It seem the system will stuck at the last reboot attempt in step 3.

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