[Bug 1780098] Re: pvgrub "premature end of file" on new kernel

[Beat]

I also just installed 4.4.0-131.157 over 4.4.0-128 (that I reinstalled
that and booted on it to avoid the 4.4.0-130 bug) and it seems like it
is working again in a Xen VM with PVGrub. My issue was identical, but
with a different error message (bad memory access error in the very
first initrd boot phase also pointing to a badly built initrd.img).

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Title:
  pvgrub "premature end of file" on new kernel

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  When trying to boot 4.4.0-130.156 via pvgrub I get the following
  message:

  error: premature end of file /boot/vmlinuz-4.4.0-130-generic.
  alloc magic is broken at 0xfefb2b40: fedd3920
  Aborted. Press any key to exit.

  
  Previous kernels (e.g. 4.4.0-127.153) boot normally, as does any kernel when booted directly by specifying its kernel, ramdisk, and options in the xen domU configuration file.

  Ubuntu release: Ubuntu 16.04.4 LTS

  Package versions (on dom0):

  grub-common 2.02~beta2-36ubuntu3.18
  grub-pc 2.02~beta2-36ubuntu3.18
  grub-xen-bin 2.02~beta2-36ubuntu3.18
  grub-pc-bin 2.02~beta2-36ubuntu3.18
  grub-xen-host 2.02~beta2-36ubuntu3.18
  grub-common 2.02~beta2-36ubuntu3.18
  grub2-common 2.02~beta2-36ubuntu3.18

  libxen-4.6:amd64 4.6.5-0ubuntu1.4
  libxenstore3.0:amd64 4.6.5-0ubuntu1.4
  xen-hypervisor-4.6-amd64 4.6.5-0ubuntu1.4
  xen-utils-4.6 4.6.5-0ubuntu1.4
  xen-utils-common 4.6.5-0ubuntu1.4
  xenstore-utils 4.6.5-0ubuntu1.4

  Package versions on domU:

  linux-generic                       4.4.0.130.136
  linux-headers-4.4.0-127-generic     4.4.0-127.153 
  linux-headers-4.4.0-130-generic     4.4.0-130.156
  linux-headers-generic               4.4.0.130.136
  linux-image-4.4.0-127-generic       4.4.0-127.153
  linux-image-4.4.0-130-generic       4.4.0-130.156 
  linux-image-extra-4.4.0-127-generic 4.4.0-127.153 
  linux-image-extra-4.4.0-130-generic 4.4.0-130.156
  linux-image-generic                 4.4.0.130.136

  The root filesystem (containing /boot) on the domU is ext4.

  I've attached the xen domain configuration from the dom0 and the
  grub.cfg from the domU

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