** Package changed: linux (Ubuntu) => linux-azure (Ubuntu)

** Changed in: linux-azure (Ubuntu)
       Status: Confirmed => New

** Tags added: kernel-da-key kernel-hyper-v

** Changed in: linux-azure (Ubuntu)
       Status: New => Triaged

** Changed in: linux-azure (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1804054

Title:
  [Hyper-V] kdump is broken on trusty with linux-azure 4.15.0-1032
  kernel

Status in linux-azure package in Ubuntu:
  Triaged

Bug description:
  While testing linux-azure 4.15.0-1032 kernel from proposed we found
  that kdump is no longer working as expected, on trusty only.

  Here are some info and versions.
  We'll have to verify a few more scenarios with other images and try to 
isolate this, but as least the kdump on trusty issue is there.
  Also remains to be checked in which release this regression was introduced.
  The below can be repro'd on Azure.

  On Xenial it works with ubuntu provided latest kexec-tools 2.0.16.

  It looks like the kexec might require some patches from upstream as
  far as I can tell from the data we have so far.

  Distro / kernel: 4.15.0-1032-azure #33~14.04.2-Ubuntu
  Package: kdump-tools                            1.5.5-2ubuntu1.6

  Errors from logs:
  kdump-config: failed to load kdump kernel
  kernel: [  230.772409] init: kdump-tools main process (1726) terminated with 
status 1

  # cat /proc/cmdline
  BOOT_IMAGE=/boot/vmlinuz-4.15.0-1032-azure root=x ro console=tty1 
console=ttyS0 earlyprintk=ttyS0 rootdelay=300 crashkernel=384M

  ---

  This issue looks resolved with the kexec package build from the
  official kernel.org kexec repo, on top of 14.04.

  kexec-tools 2.0.18
  https://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git

  # cat /sys/kernel/kexec_*
  1
  402653184
  And kdump core file gets created when running with 1032 kernel.

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