Comment 9 for bug 1777338

OK, I've tested this kernel, and it works just fine under Xen, from
what I can tell. The system comes up just fine:

Linux octagon 4.15.0-23-generic #26~lp1777338Commit8eca6add0 SMP Wed
Jun 27 15:50:08 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

The offending commit must be later.

On Thu, Jul 5, 2018 at 8:32 AM, Joseph Salisbury
<email address hidden> wrote:
> Here are the md5sum hashes of the files needed to install the test
> kernel:
>
> d5f16dcf0080db1268d3b3477c911cd7 linux-image-
> unsigned-4.15.0-23-generic_4.15.0-23.26~lp1777338Commit8eca6add0_amd64.deb
>
> 1d7504d8e691ba64d552a2d507179882 linux-
> modules-4.15.0-23-generic_4.15.0-23.26~lp1777338Commit8eca6add0_amd64.deb
>
> b004fa6244e3e038b0d67c86e0218536 linux-modules-
> extra-4.15.0-23-generic_4.15.0-23.26~lp1777338Commit8eca6add0_amd64.deb
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1777338
>
> Title:
> Linux 4.15.0-23 crashes during the boot process with a "Unable to
> handle kernel NULL pointer dereference" message
>
> Status in linux package in Ubuntu:
> In Progress
> Status in linux source package in Bionic:
> In Progress
>
> Bug description:
> I went to boot my computer today and it wouldn't boot.
>
> I get an "Unable to handle kernel NULL pointer dereference" message
> during the boot process, and, a bit after that, a message from the
> kernel watchdog about CPU #0 being stuck. Then the boot process stops
> completely.
>
> I was able to boot the system by telling Grub to load 4.15.0-22, which
> works perfectly fine, so there has been a regression.
>
> I am running Ubuntu as a Xen dom0, if that matters. I haven't tried
> booting the offending kernel version without Xen.
>
> I'm not sure where, if anywhere, these messages go on disk, for
> posting.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 18.04
> Package: linux-image-4.15.0-23-generic 4.15.0-23.25
> ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
> Uname: Linux 4.15.0-22-generic x86_64
> NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
> ApportVersion: 2.20.9-0ubuntu7.1
> Architecture: amd64
> CurrentDesktop: ubuntu:GNOME
> Date: Sun Jun 17 10:12:58 2018
> InstallationDate: Installed on 2017-08-06 (314 days ago)
> InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
> ProcEnviron:
> TERM=xterm-256color
> PATH=(custom, no user)
> XDG_RUNTIME_DIR=<set>
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> SourcePackage: linux-signed
> UpgradeStatus: Upgraded to bionic on 2018-05-29 (19 days ago)
>
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