Comment 14 for bug 1777338
Revision history for this message
| Adam Novak (interfect) wrote Re: [Bug 1777338] Re: Linux 4.15.0-23 crashes during the boot process with a "Unable to handle kernel NULL pointer dereference" message | #14 |
OK, I have finished the bisect.
3f6a3b035f91a22
tested it and it displays the problem, and I tested
abd39ac1da07b43
boots fine.
On Sat, Jul 21, 2018 at 9:42 AM, Adam Novak <email address hidden> wrote:
> That one works. On to 5856293c78e552c
>
> I suspect 3f6a3b035f91 and abd39ac1da07 may be the real problem, since
> the CPU I am using is an AMD Ryzen chip, and those are tinkering
> specifically with how the kernel handles those.
>
> On Fri, Jul 20, 2018 at 10:23 PM, Adam Novak <email address hidden> wrote:
>> OK, I tried that one and it still exhibited the issue. I'm going to
>> try 91762b4035d9da8
>>
>> On Fri, Jul 20, 2018 at 9:08 PM, Adam Novak <email address hidden> wrote:
>>> Thanks!
>>>
>>> I have tested this kernel; it doesn't work, so the problem is between
>>> fc8704280f2ada9
>>> 8eca6add0defde2
>>>
>>> I've gotten set up with a kernel build environment; I think I can
>>> finish the git bisect myself, but looking at the commits in that
>>> range, I have no hope of actually fixing the underlying bug myself.
>>> I'm building 3f6a3b035f91a22
>>>
>>> On Tue, Jul 17, 2018 at 11:24 AM, Joseph Salisbury
>>> <email address hidden> wrote:
>>>> I built the next test kernel, up to the following commit:
>>>> fc8704280f2ada9
>>>>
>>>> The test kernel can be downloaded from:
>>>> http://
>>>>
>>>> Can you test that kernel and report back if it has the bug or not? I
>>>> will build the next test kernel based on your test results.
>>>>
>>>> Thanks in advance
>>>>
>>>>
>>>> MD5SUM of files:
>>>> d76993d34e12033
>>>>
>>>> 5b89b2341b858bb
>>>> modules-
>>>>
>>>> 6928b4ad5f2a861
>>>> extra-4.
>>>>
>>>> --
>>>> You received this bug notification because you are subscribed to the bug
>>>> report.
>>>> https:/
>>>>
>>>> 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-
>>>> ProcVersionSign
>>>> Uname: Linux 4.15.0-22-generic x86_64
>>>> NonfreeKernelMo
>>>> 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_
>>>> LANG=en_US.UTF-8
>>>> SHELL=/bin/bash
>>>> SourcePackage: linux-signed
>>>> UpgradeStatus: Upgraded to bionic on 2018-05-29 (19 days ago)
>>>>
>>>> To manage notifications about this bug go to:
>>>> https:/