And here is another. IBM ThinkPad X60 tablet with Intel wireless and
kernel 2.6.20-16.

Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] ipw3945: Error sending 
SCAN_ABORT_CMD: time out after 500ms.
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] ------------[ cut here 
]------------
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] kernel BUG at 
kernel/workqueue.c:323!
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] invalid opcode: 0000 [#1]
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] SMP 
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] Modules linked in: arc4 ecb 
blkcipher ieee80211_crypt_wep binfmt_misc rfcomm l2cap bluetooth vmnet(P) 
vmmon(P) ipv6 i915 drm nvram uinput ppdev acpi_cpufreq cpufreq_stats 
cpufreq_ondemand freq_table cpufreq_conservative cpufreq_powersave 
cpufreq_userspace dev_acpi pcc_acpi sony_acpi tc1100_wmi container battery 
button video ac sbs i2c_ec i2c_core asus_acpi ibm_acpi backlight dock af_packet 
sbp2 parport_pc lp parport fuse snd_hda_intel snd_hda_codec snd_pcm_oss 
irtty_sir snd_mixer_oss sir_dev snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi 
snd_rawmidi snd_seq_midi_event snd_seq ipw3945 snd_timer snd_seq_device 
nsc_ircc usblp snd irda ieee80211 ieee80211_crypt pcmcia sdhci iTCO_wdt 
iTCO_vendor_support crc_ccitt psmouse intel_agp agpgart soundcore pcspkr 
snd_page_alloc mmc_core serio_raw yenta_socket rsrc_nonstatic pcmcia_core 
shpchp pci_hotplug tsdev joydev evdev ext3 jbd mbcache sg sd_mod usbhid hid 
generic ata_piix ahci ohci1394 ieee1394 e1000 ehci_hcd ata_generic li
Jun  9 16:53:13 thinkpad-x60 kernel: ata scsi_mod uhci_hcd usbcore thermal 
processor fan fbcon tileblit font bitblit softcursor vesafb capability commoncap
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] CPU:    0
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] EIP:    
0060:[run_workqueue+238/320]    Tainted: P      VLI
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] EFLAGS: 00010292   
(2.6.20-16-generic #2)
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] EIP is at 
run_workqueue+0xee/0x140
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] eax: 00034ae8   ebx: 
dfa53d4c   ecx: 00000246   edx: 00000000
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] esi: dfa53d40   edi: 
dfa53d48   ebp: 00000246   esp: f7b31f58
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] ds: 007b   es: 007b   ss: 
0068
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] Process ipw3945/0 (pid: 
3829, ti=f7b30000 task=c2161030 task.ti=f7b30000)
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] Stack: 00000000 dfa53d54 
f7b31f9c 00000246 dfa53d4b dfa53d60 00000001 dfa53d40 
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]        dfa53d4c dfa53d54 
f7b31f9c c0137d97 00000001 00000000 c20044c0 00010000 
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]        00000000 00000000 
c2161030 c0120b40 00100100 00200200 ffffffff ffffffff 
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] Call Trace:
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]  [worker_thread+327/368] 
worker_thread+0x147/0x170
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]  
[default_wake_function+0/16] default_wake_function+0x0/0x10
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]  [worker_thread+0/368] 
worker_thread+0x0/0x170
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]  [kthread+186/240] 
kthread+0xba/0xf0
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]  
[keventd_create_kthread+110/112] keventd_create_kthread+0x6e/0x70
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]  
[kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]  =======================
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] Code: 24 00 00 00 00 e8 f3 
72 fe ff 8b 44 24 10 3b 46 0c 0f 85 78 ff ff ff 83 6e 34 01 89 ea 83 c4 1c 89 
f0 5b 5e 5f 5d e9 f2 75 1b 00 <0f> 0b eb fe 65 a1 08 00 00 00 8b 90 a4 00 00 00 
05 94 01 00 00 
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000] EIP: 
[run_workqueue+238/320] run_workqueue+0xee/0x140 SS:ESP 0068:f7b31f58
Jun  9 16:53:13 thinkpad-x60 kernel: [27495.124000]  <3>ipw3945: Error sending 
LEDS_CMD: time out after 500ms.

-- 
ipw3945: kernel BUG at kernel/workqueue.c:323!
https://bugs.launchpad.net/bugs/117842
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