Bug#886591: 4.9.0-5 (after kaiser patch) breaks xen pvh

[Gianluigi Tiesi <sherpya@netfarm.it>]

Package: linux-image-4.9.0-5-amd64
Version: 4.9.65-3+deb9u2
Severity: grave

I've updated kernel to new version in stretch linux-image-4.9.0-5-amd64 (4.9.65-3+deb9u2)
and pvh-enabled xen domain are refusing to start.

Nothing useful in the log, it just says the domain crashes

Waiting for domain xen3 (domid 2) to die [pid 5488]
Domain 2 has shut down, reason code 3 0x3
Action for shutdown reason code 3 is destroy
Domain 2 needs to be cleaned up: destroying the domain
Done. Exiting now

without pvh = 1 or with previous linux-image-4.9.0-4-amd64 (4.9.65-3) it works fine

relevant xen domain config:

device_model_version = 'none'
kernel      = '/boot/vmlinuz-4.9.0-4-amd64'
extra       = 'elevator=noop'
ramdisk     = '/boot/initrd.img-4.9.0-4-amd64'
vcpus       = '8'
memory      = '4096'
pvh         = 1

(or /boot/vmlinuz-4.9.0-5-amd64 when trying new kernel)


Regards



-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-5-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)