I cannot reproduce this crash at will, but it tends to appear when I'm doing network transfers in both directions, i.e. downloading a file and doing a remote backup at the same time. In these circumstance, it seems like the crash will happen in under an hour.
By contrast, if I'm just doing downloads, I don't see the crash at all.
The system is a Thinkpad R51 with the Atheros AR5212 wireless interface.
I reproduced this crash in the mainline kernel linux-image-2.6.36-999-generic_2.6.36-999.201008250909_i386.deb. I can't confirm it's the exact same crash, but it happens in the same circumstances, and ath5k_tx is in the stack trace for both.
ProblemType: KernelCrash
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-24-generic
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.32-24.41-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: mk 3008 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with AD1981B at irq 11'
Mixer name : 'Analog Devices AD1981B'
Components : 'AC97a:41445374'
Controls : 26
Simple ctrls : 18
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 1RHT71WW-3.04'
Mixer name : 'ThinkPad EC 1RHT71WW-3.04'
Components : ''
Controls : 2
Simple ctrls : 1
Card29.Amixer.values:
Simple mixer control 'Console',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 14
Mono: Playback 7 [50%] [off]
Date: Sat Aug 28 00:15:38 2010
Frequency: Once a day.
HibernationDevice: RESUME=
Lsusb:
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: IBM 1836HAU
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcCmdLine: root=UUID=6f54f018-cf90-44dc-b24a-8181043d15e3 ro resume=/dev/hda2 quiet splash crashkernel=384M-2G:64M,2G-:128M
RelatedPackageVersions: linux-firmware 1.34.1
SourcePackage: linux
WpaSupplicantLog:
dmi.bios.date: 06/18/2007
dmi.bios.vendor: IBM
dmi.bios.version: 1RETDRWW (3.23 )
dmi.board.name: 1836HAU
dmi.board.vendor: IBM
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: IBM
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnIBM:bvr1RETDRWW(3.23):bd06/18/2007:svnIBM:pn1836HAU:pvrThinkPadR51:rvnIBM:rn1836HAU:rvrNotAvailable:cvnIBM:ct10:cvrNotAvailable:
dmi.product.name: 1836HAU
dmi.product.version: ThinkPad R51
dmi.sys.vendor: IBM
Attached is a decoded backtrace and disassembly of another ath5k crash of the Lucid kernel.