BUG: unable to handle kernel NULL pointer dereference at (null)

[Raony Guimarães]

Happened after locking and unlocking the screen.

ProblemType: KernelOops
DistroRelease: Ubuntu 17.10
Package: linux-image-4.13.0-12-generic 4.13.0-12.13 [modified: boot/vmlinuz-4.13.0-12-generic]
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 2.20.7-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 Cannot stat file /proc/6769/fd/57: Permission denied
 Cannot stat file /proc/6769/fd/58: Permission denied
                      USER PID ACCESS COMMAND
 /dev/snd/controlC0: raony 1492 F.... pulseaudio
Date: Mon Oct 2 12:23:54 2017
DuplicateSignature: BUG: unable to handle kernel NULL pointer dereference at (null) RIP: timecounter_read+0x13/0x60 RSP: ffffb3b549477de0
Failure: oops
HibernationDevice: RESUME=UUID=c691d0d6-cb77-4e0a-a159-1b91f7144028
InstallationDate: Installed on 2017-09-27 (4 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170926)
MachineType: LENOVO 20F9006JUK
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-12-generic.efi.signed root=UUID=b49f6369-36d7-41d6-a0f4-6376bf56e3be 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: BUG: unable to handle kernel NULL pointer dereference at (null)
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/02/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: N1CET45W (1.13 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20F9006JUK
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN1CET45W(1.13):bd06/02/2016:svnLENOVO:pn20F9006JUK:pvrThinkPadT460s:rvnLENOVO:rn20F9006JUK:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T460s
dmi.product.name: 20F9006JUK
dmi.product.version: ThinkPad T460s
dmi.sys.vendor: LENOVO

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

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.14 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14-rc3

[Raony Guimarães (raonyguimaraes)]

Just installed 4.13-rc3 I will report if it happens again. Thanks!

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]