zram module not found in 4.4/4.15 KVM kernel

[Po-Hsu Lin]

The ubuntu_zram_smoke_test will fail due to the lack of the zram module.

07:32:19 DEBUG| Running '/home/ubuntu/autotest/client/tests/ubuntu_zram_smoke_test/ubuntu_zram_smoke_test.sh'
07:32:19 ERROR| [stderr] modprobe: FATAL: Module zram not found in directory /lib/modules/4.15.0-1008-kvm
07:32:19 DEBUG| [stdout] FAILED: cannot load zram module
07:32:19 ERROR| Exception escaping from test:

There is no zram config in the Bionic KVM kernel config file.
$ grep -i zram debian.kvm/config/config.common.ubuntu
$

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-1008-kvm 4.15.0-1008.8
ProcVersionSignature: User Name 4.15.0-1008.8-kvm 4.15.17
Uname: Linux 4.15.0-1008-kvm x86_64
NonfreeKernelModules: signpost
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
Date: Wed Apr 25 07:32:47 2018
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-kvm
UpgradeStatus: No upgrade log present (probably fresh install)

[Po-Hsu Lin (cypressyew)]

This module does not exist in 4.4 kvm as well.
Can be fixed by CONFIG_ZRAM=m

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1766823

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.