watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [Web Content:11660]

Bug #1764597 reported by Jeremy Ong
This bug affects 2 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

System freezes completely, but not all at once. Some windows become unresponsive first, then eventually system is totally unresponsive.

Managed to trigger what appears to be a similar issue when testing using Linux 4.17-rc1, but bug reporter did not come up that time.

ProblemType: KernelOops
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-15-generic 4.15.0-15.16
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 2.20.9-0ubuntu5
Architecture: amd64
 /dev/snd/controlC1: user 1648 F.... pulseaudio
 /dev/snd/controlC0: user 1648 F.... pulseaudio
Date: Mon Apr 16 14:34:20 2018
Failure: oops
InstallationDate: Installed on 2018-04-16 (0 days ago)
InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
MachineType: HP HP ENVY x360 Convertible 15m-bq1xx
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-15-generic.efi.signed root=UUID=bb7709d6-a6b2-4f7f-9d3b-1245354c6f5a 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
StagingDrivers: r8822be
Title: watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [Web Content:11660]
UpgradeStatus: No upgrade log present (probably fresh install) 11/10/2017
dmi.bios.vendor: AMI
dmi.bios.version: F.13
dmi.board.asset.tag: Base Board Asset Tag 83C6
dmi.board.vendor: HP
dmi.board.version: 63.17
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAMI:bvrF.13:bd11/10/2017:svnHP:pnHPENVYx360Convertible15m-bq1xx:pvr:rvnHP:rn83C6:rvr63.17:cvnHP:ct10:cvrChassisVersion: 103C_5335KV HP Envy HP ENVY x360 Convertible 15m-bq1xx
dmi.sys.vendor: HP

Revision history for this message
Jeremy Ong (jeremyon) wrote :
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report[0]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.

Please follow the instructions on the wiki page[0]. The first step is to email the appropriate mailing list. If no response is received, then a bug may be opened on

Once this bug is reported upstream, please add the tag: 'kernel-bug-reported-upstream'.


Changed in linux (Ubuntu):
importance: Undecided → High
status: Confirmed → Triaged
Revision history for this message
Jeremy Ong (jeremyon) wrote :

Just an update, testing on 4.17-rc2 now. The issue doesn't come up that often, so I'll give it a few days to a week just in case.

Revision history for this message
Jeremy Ong (jeremyon) wrote :

Issue still occurring in 4.17-rc2.

Which mailing list should I email with the bug report? I have no idea what the actual cause of this issue is.

Revision history for this message
Kai-Heng Feng (kaihengfeng) wrote :

Please file an upstream bug at
Product: DRI
Component: DRM/amdgpu

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