Kernel Oops - BUG: unable to handle kernel paging request at fffffffffffffb88; RIP: 0010:[<ffffffffa02bd6ed>] [<ffffffffa02bd6ed>] ieee80211_stop_tx_ba_cb_irqsafe+0x1d/0xa0 [mac80211]

[Michael Hudson-Doyle]

I wasn't doing anything particular when this happened! Just typing an email.

ProblemType: KernelOops
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-23-generic 3.2.0-23.36
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 2.0.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: mwhudson 2916 F.... pulseaudio
 /dev/snd/controlC1: mwhudson 2916 F.... pulseaudio
CRDA:
 country NZ:
  (2402 - 2482 @ 40), (N/A, 30)
  (5170 - 5250 @ 20), (3, 23)
  (5250 - 5330 @ 20), (3, 23), DFS
  (5735 - 5835 @ 20), (3, 30)
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xd2620000 irq 50'
   Mixer name : 'Intel CougarPoint HDMI'
   Components : 'HDA:14f1506e,17aa21da,00100000 HDA:80862805,80860101,00100000'
   Controls : 26
   Simple ctrls : 8
Card1.Amixer.info:
 Card hw:1 'Headset'/'Logitech Logitech USB Headset at usb-0000:00:1d.0-1.2, full speed'
   Mixer name : 'USB Mixer'
   Components : 'USB046d:0a0b'
   Controls : 6
   Simple ctrls : 2
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'
   Mixer name : 'ThinkPad EC (unknown)'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [off]
Date: Mon Apr 16 14:23:39 2012
Failure: oops
HibernationDevice: RESUME=UUID=60adf8ef-26b5-4bda-919e-5afd1c1c37d8
MachineType: LENOVO 4286CTO
OopsText:
 BUG: unable to handle kernel paging request at fffffffffffffb88
 IP: [<ffffffffa02bd6ed>] ieee80211_stop_tx_ba_cb_irqsafe+0x1d/0xa0 [mac80211]
 PGD 1c07067 PUD 1c08067 PMD 0
 Oops: 0000 [#1] SMP
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=4f1086ad-77f6-4ad8-ad3b-9171e2bbae3a 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 0.12+git20090217-1ubuntu18
SourcePackage: linux
StagingDrivers: mei
Title: BUG: unable to handle kernel paging request at fffffffffffffb88
UpgradeStatus: Upgraded to precise on 2012-03-26 (20 days ago)
dmi.bios.date: 04/01/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET42WW (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4286CTO
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:bvr8DET42WW(1.12):bd04/01/2011:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4286CTO
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO

[Michael Hudson-Doyle (mwhudson)]

I'm attaching syslog from around the time this happened. The machine didn't crash, exactly, but networking was kind of screwy and I couldn't reboot cleanly.

[Joseph Salisbury (jsalisbury)]

Can you reproduce this bug, or was it a one time event?

[Michael Hudson-Doyle (mwhudson)]

On Mon, 16 Apr 2012 15:21:24 -0000, Joseph Salisbury <email address hidden> wrote:
> Can you reproduce this bug, or was it a one time event?

It was a one time thing. I also had a hang a few hours later, but
nothing was recorded in syslog for that so it was probably something
else :/

[Michael Hudson-Doyle (mwhudson)]

It just happened again :(

[Joseph Salisbury (jsalisbury)]

Since you can reproduce this bug, would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.4kernel[1] (Not a kernel in the daily directory). Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag(Only that one tag, please leave the other tags). 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'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-rc5-precise/

[Michael Hudson-Doyle (mwhudson)]

I'm now testing the mainline kernel:

$ uname -r
3.4.0-030400-generic

Will try to use wifi only for a few days and see if it recurs.

FWIW, this hardware is certified on 12.04:

http://www.ubuntu.com/certification/hardware/201108-8931/

so it's a bit sad that it doesn't seem to work perfectly! Unless I just have a hardware fault or something :/

[Michael Hudson-Doyle (mwhudson)]

I'm tagging this kernel-unable-to-test-upstream -- I ran the upstream kernel for a while, but iwlwifi in general does not seem to work well in that kernel and deassociates from the AP after usually a few hours, unlike this oops which only happens every few days.

[penalvch (penalvch)]

Michael Hudson-Doyle, 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 following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. 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-v3.11-rc5

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.

[Michael Hudson-Doyle (mwhudson)]

I haven't had this problem in a long time indeed. Don't see the point in keeping it open.