BUG: scheduling while atomic: kworker/0:0/0/0x10000100; RIP: 0010:[<ffffffff81014a4d>] [<ffffffff81014a4d>] mwait_idle+0x8d/0x120

[Tomi Leppänen]

I get a kernel panic at least once a week with new Ordi Enduro 4565T and Ubuntu 11.04. With 10.04 this didn't happen.
We have several laptops like this and all tested ones panic with same message when they are running latest Ubuntu (natty, 11.04). This laptop seems to be the same as Clevo's W765TH.

I've included image from screen when kernel panic occures. Although this one doesn't have exacly same messages as the latest panics show (for example BUG: Scheduling while atomic isn't there). Those images might be on N8, so I'll post them later.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
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.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: tomppeli 1857 F.... pulseaudio
CRDA: Error: [Errno 2] Tiedostoa tai hakemistoa ei ole
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf8700000 irq 47'
   Mixer name : 'Realtek ALC272'
   Components : 'HDA:10ec0272,15580815,00100001'
   Controls : 24
   Simple ctrls : 13
Date: Tue May 31 14:04:14 2011
HibernationDevice: RESUME=UUID=7cb2730a-bd6a-4b1c-95bc-5abef692f7f6
MachineType: CLEVO CO. W760T/M740T/M760T
ProcEnviron:
 LANGUAGE=fi_FI:en
 PATH=(custom, user)
 LANG=fi_FI.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=9d480a35-1fb4-49da-a802-f26d1e2322da 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 1.52
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to natty on 2011-05-14 (17 days ago)
UserAsoundrc:
 pcm.pulse { type pulse }
 ctl.pulse { type pulse }
WpaSupplicantLog:

dmi.bios.date: 09/07/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 1.00.07
dmi.board.asset.tag: Tag 12345
dmi.board.name: W760T/M740T/M760T
dmi.board.vendor: CLEVO Co.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr1.00.07:bd09/07/2010:svnCLEVOCO.:pnW760T/M740T/M760T:pvrNotApplicable:rvnCLEVOCo.:rnW760T/M740T/M760T:rvrNotApplicable:cvnNoEnclosure:ct1:cvrN/A:
dmi.product.name: W760T/M740T/M760T
dmi.product.version: Not Applicable
dmi.sys.vendor: CLEVO CO.

[Tomi Leppänen (tomin)]

Here is the promised image (was still on camera not on N8). Show different info than the other image but I don't know what the difference is.

[Tomi Leppänen (tomin)]

I've run Linux 2.6.39.1 for a week now and I haven't experienced a single panic so it seems that the problem is fixed in 2.6.39 or it's due to some patch in Natty's kernel.

Info about the new kernel:
$ apt-cache policy linux-image-2.6.39-0-generic
linux-image-2.6.39-0-generic:
  Asennettu: 2.6.39-0.5~20110427
  Ehdokas: 2.6.39-0.5~20110427
  Versiotaulukko:
 *** 2.6.39-0.5~20110427 0
        500 http://ppa.launchpad.net/kernel-ppa/ppa/ubuntu/ natty/main amd64 Packages
        100 /var/lib/dpkg/status
$

[Tomi Leppänen (tomin)]

Oops. Meant 2.6.39 not 2.6.39.1.

[penalvch (penalvch)]

Tomin, thank you for reporting this bug and helping make Ubuntu better. 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 provide information following https://wiki.ubuntu.com/Kernel/DebuggingSchedulingWhileAtomic ? As well, can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

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

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

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.

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'.

Please let us know your results. Thanks in advance.

[Tomi Leppänen (tomin)]

This has never been an issue in Oneiric and Precise. I don't know, if it still happens in Natty, because it's outdated (it's no longer in use). Feel free to mark this to something that means that this bug is not relevant anymore.

[penalvch (penalvch)]

Tomin, this bug report is being closed due to your last comment 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.