[102537.162416] BUG: soft lockup - CPU#1 stuck for 23s! [qemu-system-x86:1662]

[mrDoctorWho]

I have one idea: i just pressed ctrl+c in terminal when it runs Qemu with kvm.

ProblemType: KernelOops
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-8-generic 3.13.0-8.28
ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
Uname: Linux 3.13.0-8-generic i686
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 2.13.2-0ubuntu4
Architecture: i386
AudioDevicesInUse:
 Cannot stat file /proc/29672/fd/9: Permission denied
                      USER PID ACCESS COMMAND
 /dev/snd/controlC0: mrdoctorwho 2366 F.... pulseaudio
 /dev/snd/pcmC0D0p: mrdoctorwho 2366 F...m pulseaudio
CRDA:
 country RU:
  (2402 - 2482 @ 40), (N/A, 20)
  (5735 - 5835 @ 20), (N/A, 30)
Date: Tue Feb 18 23:38:28 2014
Failure: oops
MachineType: CLEVO CO. W240EU/W250EUQ/W270EUQ
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-8-generic root=UUID=65aaa401-66e5-4ff9-bfbc-e1abafbc906b ro max_loop=64 iommu=pt iommu=1 amd_iommu=fullflush quiet elevator=noop 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 0.12+git20090217-3ubuntu4
SourcePackage: linux
StagingDrivers: zram
Title: [102537.162416] BUG: soft lockup - CPU#1 stuck for 23s! [qemu-system-x86:1662]
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/26/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W240EU/W250EUQ/W270EUQ
dmi.board.vendor: CLEVO CO.
dmi.board.version: V3.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd02/26/2013:svnCLEVOCO.:pnW240EU/W250EUQ/W270EUQ:pvrNotApplicable:rvnCLEVOCO.:rnW240EU/W250EUQ/W270EUQ:rvrV3.0:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.name: W240EU/W250EUQ/W270EUQ
dmi.product.version: Not Applicable
dmi.sys.vendor: CLEVO CO.

[Brad Figg (brad-figg)]

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 v3.13 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'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-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/v3.14-rc2-trusty/

[Joseph Salisbury (jsalisbury)]

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 bugzilla.kernel.org.

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

[0] https://wiki.ubuntu.com/Bugs/Upstream/kernel