[Bug 1862751] Re: Hard lockups using microcode releases 20191115 on Intel Whiskey Lake

[Paul Menzel]

Trying to find out, if bug #1883065 [1] is a duplicate of this one.

Is this a laptop? If yes, does having the power cable plugged in make a
difference?

Starting with `maxcpus=1` and then trying to bring more CPUs online, on
the Dell Precision 3540 with dedicated AMD graphics card, it always
hangs after one or two more CPUs when on battery. With the power cable,
it often works, but I saw it also failing. I reported the issue to the
Linux Kernel Mailing List *Intel laptop: Starting with `maxcpus=1` and
then bringing other CPUs online freezes system* [2].

[1]: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1883065
[2]: https://lkml.org/lkml/2020/6/11/474

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Title:
  Hard lockups using microcode releases 20191115 on Intel Whiskey Lake

Status in HWE Next:
  Confirmed
Status in OEM Priority Project:
  Confirmed
Status in intel-microcode package in Ubuntu:
  Confirmed

Bug description:
  This hangs Linux warm/cold boot for all versions with non-uniformed
  fail rate. With v5.2 or older, it's almost 100% reproducible; with
  v5.3 or above, it's much less likely. With kernel boot parameters
  `initcall_debug ignore_loglevel=1 earlyprintk=efi earlycon=efifb`, it
  shows it's mostly locked up inside lock access in `console_init()`,
  but it may also sometimes happen when early console is not even
  initialized. On Ubuntu Bionic, the first known failing version of
  intel-microcode package is 3.20191115.1ubuntu0.18.04.1. By reverting
  this package to any prior revision and such hard lockup is then gone.
  Another possible temporary work-around is to disable SMP by passing
  "nosmp" to kernel.

  This is currently reproducible on Intel i5-8365U, model 142, stepping
  12.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: intel-microcode 3.20191115.1ubuntu0.18.04.2
  ProcVersionSignature: Ubuntu 5.0.0-1037.42-oem-osp1 5.0.21
  Uname: Linux 5.0.0-1037-oem-osp1 x86_64
  ApportVersion: 2.20.9-0ubuntu7.9
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  gdm        1229 F.... pulseaudio
                        u          1855 F.... pulseaudio
  Date: Tue Feb 11 05:10:57 2020
  DistributionChannelDescriptor:
   # This is the distribution channel descriptor for the OEM CDs
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-bionic-amd64-20190418-59+beaver-osp1-gilly+X27
  InstallationDate: Installed on 2020-02-10 (0 days ago)
  InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary 20190418-12:10
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 0a5c:5843 Broadcom Corp.
   Bus 001 Device 002: ID 0bda:5532 Realtek Semiconductor Corp.
   Bus 001 Device 004: ID 8087:0029 Intel Corp.
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Dell Inc. Latitude 5410
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-1037-oem-osp1 root=UUID=7b079ce4-5c1d-401e-b847-d2c8b8fc939b ro initcall_debug ignore_loglevel=1 earlyprintk=efi earlycon=efifb nosmp
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-5.0.0-1037-oem-osp1 N/A
   linux-backports-modules-5.0.0-1037-oem-osp1  N/A
   linux-firmware                               1.173.14
  SourcePackage: intel-microcode
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/29/2020
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 0.0.7
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr0.0.7:bd01/29/2020:svnDellInc.:pnLatitude5410:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr:
  dmi.product.family: Latitude
  dmi.product.name: Latitude 5410
  dmi.product.sku: 09C9
  dmi.sys.vendor: Dell Inc.

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