[Bug 1862751] Re: sig=0x806ec/20200609, Hard lockups using microcode releases 20191115 on Intel Whiskey Lake

[Timo Aaltonen]

** Changed in: hwe-next
       Status: Incomplete => Invalid

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Title:
  sig=0x806ec/20200609, Hard lockups using microcode releases 20191115
  on Intel Whiskey Lake

Status in HWE Next:
  Invalid
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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