WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x2a0/0x2b0()

X-Ubuntu. Update to new beta version.

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ankhaa 1897 F.... xfce4-volumed
                      ankhaa 1922 F.... pulseaudio
 /dev/snd/seq: timidity 1637 F.... timidity
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfeaf8000 irq 43'
   Mixer name : 'Realtek ALC662 rev1'
   Components : 'HDA:10ec0662,18493662,00100101'
   Controls : 34
   Simple ctrls : 18
CurrentDmesg:
 [ 33.847074] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=0
 [ 36.248660] vboxdrv: Found 2 processor cores.
 [ 36.249266] vboxdrv: fAsync=0 offMin=0x20a offMax=0x1746
 [ 36.250558] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.
 [ 36.250564] vboxdrv: Successfully loaded version 4.0.4_OSE (interface 0x00160000).
Date: Mon Apr 18 10:37:02 2011
Failure: oops
HibernationDevice: RESUME=UUID=3a6dd7d3-f360-476d-b38e-5a7b9c5d1201
InstallationMedia: Xubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101008.1)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.

 vboxnet0 no wireless extensions.
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=eac61652-bbb4-4dbc-a9bb-8ae67e11a712 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-generic N/A
 linux-backports-modules-2.6.38-8-generic N/A
 linux-firmware 1.50
RfKill:

SourcePackage: linux
Title: WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x2a0/0x2b0()
UpgradeStatus: Upgraded to natty on 2011-04-01 (16 days ago)
dmi.bios.date: 02/01/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.20
dmi.board.name: G41M-VS2
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.20:bd02/01/2010:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnG41M-VS2:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.