Public bug reported:
NOTE: I DID NOT FOUND THE PACKAGE "linux-image-2.6.20-16-generic" in the choose
menu
The package that contains the bug(In my opinion) :
http://packages.ubuntu.com/feisty/base/linux-image-2.6.20-16-generic
Kernel version: 2.6.20-16-generic #2 SMP Thu Jun 7 20:19:32 UTC 2007 i686
GNU/Linux
Distribution: Ubuntu Feisty 7.04 - for PC
Hardware: Notebook FSC Amilo Pro v3205 AE3EE ( CPU : Core Duo @ 1.86; RAM: 1GB;
WLAN: Intel 3945 a/b/g; Video: intel 945)
Problem:
After 4 hours of use of the wlan the bug appeared - the wireless connection
dropped to 30 %. But if you execute iwconfig the result is that you don have
wirelees extensions. The solve the problem i had to reboot the system.
Kernel message:
[15634.616000] ipw3945: Error sending LEDS_CMD: time out after 500ms.
[15635.216000] ipw3945: Error sending LEDS_CMD: time out after 500ms.
[15635.716000] ipw3945: Error sending cmd #07 to daemon: time out after 500ms.
[15636.920000] ipw3945: Error sending SCAN_ABORT_CMD: time out after 500ms.
[15637.420000] ipw3945: Error sending cmd #08 to daemon: time out after 500ms.
[15637.920000] ipw3945: Error sending ADD_STA: time out after 500ms.
[15638.420000] ipw3945: Error sending SCAN_ABORT_CMD: time out after 500ms.
[15647.956000] ipw3945: Error sending LEDS_CMD: time out after 500ms.
[15648.016000] ADDRCONF(NETDEV_UP): eth1: link is not ready
[15697.420000] ipw3945: Error sending LEDS_CMD: time out after 500ms.
[15697.920000] ipw3945: Error sending LEDS_CMD: time out after 500ms.
[15698.192000] ------------[ cut here ]------------
[15698.192000] kernel BUG at kernel/workqueue.c:323!
[15698.192000] invalid opcode: 0000 [#1]
[15698.192000] SMP
[15698.192000] Modules linked in: arc4 ecb blkcipher ieee80211_crypt_wep
binfmt_misc rfcomm l2cap bluetooth ppdev i915 drm acpi_cpufreq cpufreq_stats
cpufreq_powersave cpufreq_userspace cpufreq_conservative cpufreq_ondemand
freq_table pcc_acpi dev_acpi tc1100_wmi sony_acpi battery sbs i2c_ec i2c_core
button video container asus_acpi backlight ac dock af_packet sbp2 parport_pc lp
parport fuse snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss joydev
snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event
snd_seq snd_timer ipw3945 sdhci snd_seq_device iTCO_wdt iTCO_vendor_support
mmc_core serio_raw ieee80211 ieee80211_crypt snd soundcore psmouse shpchp
pci_hotplug snd_page_alloc intel_agp agpgart tsdev evdev ipv6 ext3 jbd mbcache
sr_mod cdrom sg sd_mod ata_generic ahci ehci_hcd ohci1394 ieee1394 uhci_hcd
e100 mii usbcore ata_piix libata scsi_mod generic thermal processor fan fbcon
tileblit font bitblit softcursor vesafb capability commoncap
[15698.192000] CPU: 1
[15698.192000] EIP: 0060:[run_workqueue+238/320] Not tainted VLI
[15698.192000] EFLAGS: 00010296 (2.6.20-16-generic #2)
[15698.192000] EIP is at run_workqueue+0xee/0x140
[15698.192000] eax: 06f347f8 ebx: f749a44c ecx: 00000246 edx: 00000000
[15698.192000] esi: f749a440 edi: f749a448 ebp: 00000246 esp: f7f09f58
[15698.192000] ds: 007b es: 007b ss: 0068
[15698.192000] Process ipw3945/1 (pid: 3701, ti=f7f08000 task=df99d030
task.ti=f7f08000)
[15698.192000] Stack: 00000000 f749a454 f7f09f9c 00000246 f749a44b f749a460
00000001 f749a440
[15698.192000] f749a44c f749a454 f7f09f9c c0137d97 00000001 00000000
c17f6bc0 00010000
[15698.192000] 00000000 00000000 df99d030 c0120b40 00100100 00200200
ffffffff ffffffff
[15698.192000] Call Trace:
[15698.192000] [worker_thread+327/368] worker_thread+0x147/0x170
[15698.192000] [default_wake_function+0/16] default_wake_function+0x0/0x10
[15698.192000] [worker_thread+0/368] worker_thread+0x0/0x170
[15698.192000] [kthread+186/240] kthread+0xba/0xf0
[15698.196000] [keventd_create_kthread+110/112]
keventd_create_kthread+0x6e/0x70
[15698.196000] [kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10
[15698.196000] =======================
[15698.196000] 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
[15698.196000] EIP: [run_workqueue+238/320] run_workqueue+0xee/0x140 SS:ESP
0068:f7f09f58
[15698.196000] <6>ADDRCONF(NETDEV_UP): eth1: link is not ready
** Affects: kernel-source-2.6.11 (Ubuntu)
Importance: Undecided
Status: New
--
Kernel version: 2.6.20.16-generic!!!Bug in the kernel/workqueue.c crashes the
wireless network
https://bugs.launchpad.net/bugs/123553
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