WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x213/0x220()

[Pete]

Happened after successful resume after suspend by timer.

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic-pae 2.6.38-8.42
Regression: No
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: pete 1476 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 57'
   Mixer name : 'Conexant CX20585'
   Components : 'HDA:14f15069,17aa218b,00100302'
   Controls : 8
   Simple ctrls : 5
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xcdefc000 irq 16'
   Mixer name : 'Nvidia GPU 0a HDMI/DP'
   Components : 'HDA:10de000a,10de0101,00100100'
   Controls : 16
   Simple ctrls : 4
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6MHT44WW-1.19'
   Mixer name : 'ThinkPad EC 6MHT44WW-1.19'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Sun Apr 17 20:59:53 2011
Failure: oops
Frequency: This has only happened once.
HibernationDevice: RESUME=UUID=9b1a5b3e-21d8-4254-9a0e-11e8596071c5
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
MachineType: LENOVO 4389BL9
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae root=UUID=2c9280e3-5ce3-4839-b08f-8cdaae51d7d0 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-generic-pae N/A
 linux-backports-modules-2.6.38-8-generic-pae N/A
 linux-firmware 1.50
SourcePackage: linux
Title: WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x213/0x220()
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/24/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 6NET76WW (1.37 )
dmi.board.name: 4389BL9
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6NET76WW(1.37):bd02/24/2011:svnLENOVO:pn4389BL9:pvrThinkPadW510:rvnLENOVO:rn4389BL9:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4389BL9
dmi.product.version: ThinkPad W510
dmi.sys.vendor: LENOVO

[penalvch (penalvch)]

Pete, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.13-rc3

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

[Pete (p-rosenberg)]

Hi Christopher, thanks for your message. I didn't experience this error anymore and this report can be closed.
Best regards

[penalvch (penalvch)]

Pete, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/763889/comments/3 regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.