BUG: scheduling while atomic: wpa_supplicant/754/0x10000500 [AR2427]

[Alexander]

same as bug 719979

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-6-generic 2.6.38-6.34
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: shulik 1658 F.... pulseaudio
CRDA: Error: [Errno 2] Нет такого файла или каталога
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf7cf8000 irq 46'
   Mixer name : 'Realtek ALC269'
   Components : 'HDA:10ec0269,10438437,00100004'
   Controls : 9
   Simple ctrls : 5
Date: Tue Mar 15 13:23:13 2011
Failure: oops
HibernationDevice: RESUME=UUID=01298b9b-2a74-48b3-b217-3db94352c80b
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: ASUSTeK Computer INC. 1005PX
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-6-generic root=UUID=e9a425fb-f4fb-4743-bb34-c976e90ee158 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-6-generic N/A
 linux-backports-modules-2.6.38-6-generic N/A
 linux-firmware 1.48
SourcePackage: linux
Title: BUG: scheduling while atomic: wpa_supplicant/754/0x10000500
UpgradeStatus: Upgraded to natty on 2011-03-12 (2 days ago)
dmi.bios.date: 04/30/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0601
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1001PX
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0601:bd04/30/2010:svnASUSTeKComputerINC.:pn1005PX:pvrx.x:rvnASUSTeKComputerINC.:rn1001PX:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1005PX
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.

[Hansen (moteprime)]

Natty desktop i386 daily iso 2011-03-14

I have the same bug, described in:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/729549

And i also have an automatic bug report:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/734708

I am unsure if to mark it as duplicate?

[Hansen (moteprime)]

This is an answer to question from ITK in duplicate bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/729549

"ITK: Have you been able to test against the latest kernel?
2.6.38 rc-8 ?"

Installation of Natty has now been possible, but the bug remains.
I have used Natty Desktop i386 ISO dated 17. March.

"cat /proc/version" Returns:
Linux version 2.6.38-6-generic (buildd@rothera) (gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-5ubuntu1) ) #34-Ubuntu SMP Tue Mar 8 14:09:10 UTC 2011

I have to admit that i am unsure what kernel RC it is, and can't seem find a way to find out.
Please advice on how to proceed.

[IKT (ikt)]

Heya,

From your cat, your system currently has:

"cat /proc/version" Returns:
Linux version 2.6.38-6-generic

Which is release number 38, Release candidate 6.

RC8 was made available:

Mon, 7 Mar 2011
http://lwn.net/Articles/431999/

but it looks like there's a slight lag as

RC 7 only just made it into natty:

Tue Mar 15
https://lists.ubuntu.com/archives/natty-changes/2011-March/009413.html

Which is my bad, I jumped at the release of it since it mentioned ath9k twice:

ath9k: correct ath9k_hw_set_interrupts
ath9k_htc: Fix an endian issue

If you want to check if RC8 is in natty yet this page has:

https://launchpad.net/ubuntu/+source/linux
! A newer version of linux is available for packaging: Linux 2.6.38-rc8

When rc8 is packaged and in the repo's it should look something like this:

The Natty Narwhal (active development) Linux trunk series
 2.6.38-8.XX

Where xx is a number the ubuntu kernel team has assigned.

hope this helps :)

[Hansen (moteprime)]

Thanks!
I was starring at the "ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7" from the apport report, but i guess that the rc7 are the Ubuntu rc number.
It all makes better sense now, thanks a lot!.

So if there are ath9k fixes in rc8, we will just sit tight and wait to see if it solves it.

[Alexander (shulikov)]

Tested on ubuntu 2.6.38-7.35 and 2.6.38 vanilla - the same trouble.

[Fabio Marconi (fabiomarconi)]

@ mote or Alexander,
Can you please reply at the question of:
https://bugzilla.kernel.org/show_bug.cgi?id=31332
Thanks
Fabio

[Alexander (shulikov)]

done

On Fri, 18 Mar 2011 16:31:05 -0000, Fabio Marconi
<email address hidden> wrote:
> @ mote or Alexander,
> Can you please reply at the question of:
> https://bugzilla.kernel.org/show_bug.cgi?id=31332
> Thanks
> Fabio

[Alexander (shulikov)]

Done

[Hansen (moteprime)]

Thanks. I'm afraid I don't know how and what.
If it will make a difference that I take action to, I will need some help, what to do.

[IKT (ikt)]

it's ok, it appears Alexander has done it which should be enough :)

[Jaroslav (jaroslavj)]

Well it seems my bug is a duplicate.

Been using 11.04 alpha 3 before, quite nice, but crashed when trying to connect to wifi. Moved back to Ubuntu 10.10 everything worked fine, but decided to try out the 2.6.38 kernel http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.38-natty/ it is the same kernel as 11.04, so don't know if it is a ubuntu or kernel bug. When trying to connect to wireless, pc freezes and can't move my mouse.

I'm using an Asus Eee R101(1001px) it has 1.6ghz atom 1gb ram and uses ath9k driver for wifi(but supports only b/g) the chipset is AR2427.

You have the same symptoms?

[Hansen (moteprime)]

@ slon
Hi. -Yes same symptoms.
I have a Asus eee 1005P, also with a AR2427 wireless. I have both 10.10 and 11.04 on it, but only 11.04 has this freezing bug when connecting to wireless network.

[Alexander (shulikov)]

From bugzilla.kernel.org:
Can you please close this bug, this patch is already there in wireless-testing
and also sent to stable.

[Alexander (shulikov)]

And maybe need apply patch to ubuntu kernel for fixing bug, before this was applied to vanilla kernel?

[Hansen (moteprime)]

Is the fix to be expected in kernel 2.6.38 stable?

[IKT (ikt)]

Setting to fix committed, change to fix released when it actually makes it into ubuntu 11.04.

By the looks of it this will be included in 2.6.38.2.

[Nathanael Schilling (nathanaelschilling)]

This bug, or some form of it affects me too on natty beta, connecting to a wpa network on natty causes the computer to completely freeze, making it impossible to connect to the internet anywhere with a network like this from my netbook.

[Laurens (laurenssss)]

== Regression details ==
Discovered in version: 11.04
Last known good version: 10.10

This bug never appears in 10.10 but always in 11.04 if connecting to unencrypted MOBILE WiFi network of Swisscom in Switzerland. Other networks work mostly.

[Fabi (fabsi-deactivatedaccount)]

Same here on my EEEPC. the System freezes up if i try to connect to my wireless lan. *.iso from 2011-04-06

[asb (asb-asbradbury)]

There's a patch that should fix this bug in 2.6.38.3 "ath9k: Fix kernel panic in AR2427". http://thread.gmane.org/gmane.linux.kernel.stable/7414

I couldn't find confirmation to indicate that this patch was already pulled in to the Natty kernel, but it will definitely be there when it updates to 2.6.38.3 (see bug #761134).

[Hansen (moteprime)]

What date is 2.6.38.3 scheduled for?

[Arctus (arctus)]

Natty freezes after connecting to WPA2
Kernel says wpa_supplicant Tainted
Installed from 20110423 i386 iso on my EEE 1005P.
Kernel 2.6.38-8 is installed.
Wireless:
02:00.0 Network controller: Atheros Communications Inc. AR2427 Wireless Network Adapter (PCI-Express) (rev 01)

[asb (asb-asbradbury)]

 I can confirm that the mainline build 2.6.38.3 resolves this issue for me (AR2427 on an Asus EEE PC 1001P).

[Laurens (laurenssss)]

> I can confirm that the mainline build 2.6.38.3 resolves this issue for
> me (AR2427 on an Asus EEE PC 1001P).
When will 2.6.38.3 get in to the natty repositories?

[asb (asb-asbradbury)]

Laurens: Going by the consensus of this thrad <https://lists.ubuntu.com/archives/kernel-team/2011-April/015366.html> it seems kernel-team don't want to release a new kernel without good reason (with the natty release so soon). That said, seeing as this is a definite regression on previous kernels, is tracked upstream, and has a patch which is part of an upstream stable kernel I suppose we can hope that the relevant patch will get cherry-picked. Otherwise, the patch should be in the first SRU after the natty release. In the meanwhile, .debs of the mainline build are available <https://wiki.ubuntu.com/Kernel/MainlineBuilds>

[Lixin Chin (wstfgl)]

I can confirm this bug (or one very like it) is *not* fixed.

Arch is x86_64,
Device is an ASUS EEE-PC 1005PE

lspci:
02:00.0 Network controller: Atheros Communications Inc. AR2427 Wireless Network Adapter (PCI-Express) (rev 01)

uname -a:
Linux <hostname> 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

However downgrading back to the maverick kernel 2.6.35-28-generic works perfectly.

[IKT (ikt)]

@Lixin Chin:

Did you upgrade to 2.6.38.3?

[Lixin Chin (wstfgl)]

@IKT:
Oops! My bad, I was in a hurry and had assumed that the -8 version number corresponded to the .3 patch number on the mainline kernel.

Installed the mainline kernel and things seem to be working so far.

[CaptSaltyJack (csjubuntu)]

Pardon my ignorant question, but: do people working on the Linux kernel test it on several different machines (including the highly popular Asus EEE PC) before releasing it into production? I'm just surprised a critical bug such as this made it into the Ubuntu & Mint release ISOs.

[Julian Wiedmann (jwiedmann)]

For those still using the mainline builds: this should now be fixed with Natty's 2.6.38-10.46

[Hansen (moteprime)]

I can confirm this. Wireless now works with no problems Natty desktop i386 2.6.38-10.46.

[eva (evammg)]

I can confirm this too. Wireless works great on
Linux rubeva-netbook 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 i686 i386 GNU/Linux
Ubuntu 11.04 \n \l

Regards