I can't find the error in attached dmesg.

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https://bugs.launchpad.net/bugs/1859521

Title:
  BUG: Bad page map in process ThreadPoolForeg  pte:00000018
  pmd:29337e067

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  showed up after using ubuntustudio package installer.

  ProblemType: KernelOops
  DistroRelease: Ubuntu 20.04
  Package: linux-image-5.4.0-9-lowlatency 5.4.0-9.12
  ProcVersionSignature: Ubuntu 5.4.0-9.12-lowlatency 5.4.3
  Uname: Linux 5.4.0-9-lowlatency x86_64
  Annotation: Your system might become unstable now and might need to be 
restarted.
  ApportVersion: 2.20.11-0ubuntu15
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  vizionary357   2570 F.... pulseaudio
   /dev/snd/controlC0:  vizionary357   2570 F.... pulseaudio
  Date: Mon Jan 13 13:08:36 2020
  Failure: oops
  MachineType: LENOVO 81SS
  ProcFB: 0 amdgpudrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-9-lowlatency 
root=UUID=d48b9241-4b03-4652-b3de-9c81a2c11c7c ro quiet splash vt.handoff=1
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions: kerneloops-daemon N/A
  SourcePackage: linux
  Title: BUG: Bad page map in process ThreadPoolForeg  pte:00000018 
pmd:29337e067
  UpgradeStatus: Upgraded to focal on 2020-01-12 (1 days ago)
  dmi.bios.date: 09/16/2019
  dmi.bios.vendor: LENOVO
  dmi.bios.version: AGCN24WW(V1.07)
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: LNVNB161216
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40700 WIN
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad FLEX-14API
  dmi.modalias: 
dmi:bvnLENOVO:bvrAGCN24WW(V1.07):bd09/16/2019:svnLENOVO:pn81SS:pvrLenovoIdeaPadFLEX-14API:rvnLENOVO:rnLNVNB161216:rvrSDK0J40700WIN:cvnLENOVO:ct10:cvrLenovoIdeaPadFLEX-14API:
  dmi.product.family: IdeaPad FLEX-14API
  dmi.product.name: 81SS
  dmi.product.sku: LENOVO_MT_81SS_BU_idea_FM_IdeaPad FLEX-14API
  dmi.product.version: Lenovo IdeaPad FLEX-14API
  dmi.sys.vendor: LENOVO

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