OK, I have finished the bisect. 3f6a3b035f91a22c0d3bd27630bf61eac9c8cf6c is the first bad commit. I tested it and it displays the problem, and I tested abd39ac1da07b433fc570332ee9ad938b5071760 right before it and that one boots fine.
On Sat, Jul 21, 2018 at 9:42 AM, Adam Novak <interf...@gmail.com> wrote: > That one works. On to 5856293c78e552c012835e667d66775bba20b4f7. > > 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 <interf...@gmail.com> wrote: >> OK, I tried that one and it still exhibited the issue. I'm going to >> try 91762b4035d9da8c266e2cb3dbc552052434bbf0 next. >> >> On Fri, Jul 20, 2018 at 9:08 PM, Adam Novak <interf...@gmail.com> wrote: >>> Thanks! >>> >>> I have tested this kernel; it doesn't work, so the problem is between >>> fc8704280f2ada9f61f08a2d5adc0dab169cc207 and >>> 8eca6add0defde203282476d7969a7c13bbd7d91. >>> >>> 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 3f6a3b035f91a22c0d3bd27630bf61eac9c8cf6c now. >>> >>> On Tue, Jul 17, 2018 at 11:24 AM, Joseph Salisbury >>> <joseph.salisb...@canonical.com> wrote: >>>> I built the next test kernel, up to the following commit: >>>> fc8704280f2ada9f61f08a2d5adc0dab169cc207 >>>> >>>> The test kernel can be downloaded from: >>>> http://kernel.ubuntu.com/~jsalisbury/lp1777338 >>>> >>>> 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: >>>> d76993d34e1203375090a47c4de8ebfe >>>> linux-image-unsigned-4.15.0-23-generic_4.15.0-23.26~lp1777338Commitfc8704280f_amd64.deb >>>> >>>> 5b89b2341b858bbe2bcae88e3efaf8c8 linux- >>>> modules-4.15.0-23-generic_4.15.0-23.26~lp1777338Commitfc8704280f_amd64.deb >>>> >>>> 6928b4ad5f2a861ad674ff88a4745471 linux-modules- >>>> extra-4.15.0-23-generic_4.15.0-23.26~lp1777338Commitfc8704280f_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) >>>> >>>> To manage notifications about this bug go to: >>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1777338/+subscriptions -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1777338/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
