watchdog: BUG: soft lockup - CPU#11 stuck for 188s! [swapper/11:0]

[Marcus Grenängen]

Got this after resuming from suspend for a few hours. Also noticed that it was not possible to re-establish wifi connectivity. Had to reboot the machine to get back to a proper working state.

ProblemType: KernelOops
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-18-generic 5.4.0-18.22
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: gdm 1443 F.... pulseaudio
                      marcus 1889 F.... pulseaudio
Date: Sat Mar 21 11:43:52 2020
Failure: oops
InstallationDate: Installed on 2020-03-18 (2 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200315)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 27c6:5395 Shenzhen Goodix Technology Co.,Ltd. Fingerprint Reader
 Bus 001 Device 002: ID 0cf3:e300 Qualcomm Atheros Communications
 Bus 001 Device 004: ID 0c45:671d Microdia Integrated_Webcam_HD
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. XPS 15 9570
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-18-generic root=UUID=8c0be221-e900-480f-b359-5cbd3f16ebd4 ro quiet splash vt.handoff=7
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: watchdog: BUG: soft lockup - CPU#11 stuck for 188s! [swapper/11:0]
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/25/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.15.0
dmi.board.name: 0D0T05
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.15.0:bd12/25/2019:svnDellInc.:pnXPS159570:pvr:rvnDellInc.:rn0D0T05:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 15 9570
dmi.product.sku: 087C
dmi.sys.vendor: Dell Inc.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Mauricio Faria de Oliveira (mfo)]

Could you please send /var/log/kern.log* ? Thanks!

[Marcus Grenängen (grenangen)]

Unfortunately no, the install has been removed for now as it was just a quick test spin of 20.04 on real hardware.

[Mauricio Faria de Oliveira (mfo)]

Hi Marcus,

Since 20.04 is not yet released, and the logs attached do not show the stack trace
(it seems like an apport behavior, in OopsText.txt, not your/human's fault AFAIK)
it seems there's little investigation that can be done in this error.

I'd suggest that if you can reproduce this problem again, please re-open this bug,
and provide the output of 'dmesg' after the error happens/before rebooting system.

[Mauricio Faria de Oliveira (mfo)]

FWIW, bug 1870553 reported for apport, about the lack of the kernel stack traces.