Ubuntu
linux-source-2.6.15 package

kernel crash/preempt (maybe related to wlan)

Bug #18187 reported by Christian Kellner
6
Affects Status Importance Assigned to Milestone
linux-source-2.6.15 (Ubuntu)
Fix Released
Low
Ben Collins

Bug Description

This happens with NetworkManager and with netapplet, but in the latter one only
when I select the wlan interface, so I guess it is related to the wlan driver (I
have a centrino laptop using the ipw2100 module). It appeared after a kernel
upgrade (not sure since version though).
Well here is the trackback:
-----
Jun 16 20:44:32 nano kernel: [4294764.813000] NETDEV WATCHDOG: eth1: transmit
timed out
Jun 16 20:44:32 nano kernel: [4294765.224000] mtrr: 0xf0000000,0x8000000
overlaps existing 0xf0000000,0x400000
Jun 16 20:44:32 nano kernel: [4294765.433000] PREEMPT
Jun 16 20:44:32 nano kernel: [4294765.433000] Modules linked in: i915 drm ipv6
af_packet arc4 ieee80211_crypt_wep joydev sg sd_mod parport_pc parport pcspkr
psmouse rtc ipw2100 firmware_class ieee80211 ieee80211_crypt 8139cp 8139too mii
ohci1394 yenta_socket rsrc_nonstatic pcmcia_core snd_intel8x0 snd_ac97_codec
snd_pcm_oss snd_mixer_oss tsdev snd_pcm snd_timer snd soundcore snd_page_alloc
usbhid usb_storage hci_usb tpm_atmel bluetooth tpm_nsc tpm shpchp pci_hotplug
ehci_hcd uhci_hcd usbcore intel_agp agpgart dm_mod evdev sbp2 ieee1394 ide_cd
mousedev sr_mod scsi_mod cdrom md ext3 jbd mbcache ide_disk ide_generic piix
ide_core unix thermal processor fan fbcon tileblit font bitblit vesafb
cfbcopyarea cfbimgblt cfbfillrect softcursor capability commoncap
Jun 16 20:44:32 nano kernel: [4294765.433000] CPU: 0
Jun 16 20:44:32 nano kernel: [4294765.433000] EIP:
0060:[pg0+677296873/1069794304] Not tainted VLI
Jun 16 20:44:32 nano kernel: [4294765.433000] EFLAGS: 00010097 (2.6.12-1-686)
Jun 16 20:44:32 nano kernel: [4294765.433000] EIP is at
ieee80211_wx_get_scan+0x7bd/0x9df [ieee80211]
Jun 16 20:44:32 nano kernel: [4294765.433000] eax: fffdff88 ebx: 00000000
ecx: 00020078 edx: ffffffff
Jun 16 20:44:32 nano kernel: [4294765.433000] esi: 00000000 edi: fffdff88
ebp: e6e99e62 esp: e6e99cb0
Jun 16 20:44:32 nano kernel: [4294765.433000] ds: 007b es: 007b ss: 0068
Jun 16 20:44:32 nano kernel: [4294765.433000] Process NetworkManager (pid: 7132,
threadinfo=e6e98000 task=e6988a60)
Jun 16 20:44:32 nano kernel: [4294765.433000] Stack: e6e99e5f 00000029 e89ae821
0000000b e89ae820 e58d0077 e60c236c e510f060
Jun 16 20:44:32 nano kernel: [4294765.433000] 162b1b20 00000000 e510f092
e5110000 00000286 e58d0000 00000000 00000000
Jun 16 20:44:32 nano kernel: [4294765.433000] 00000004 00000000 00000000
00000000 00000000 00000000 00000000 00000000
Jun 16 20:44:32 nano kernel: [4294765.433000] Call Trace:
Jun 16 20:44:32 nano kernel: [4294765.433000] [buffered_rmqueue+353/517]
buffered_rmqueue+0x161/0x205
Jun 16 20:44:32 nano kernel: [4294765.433000] [__alloc_pages+374/998]
__alloc_pages+0x176/0x3e6
Jun 16 20:44:32 nano kernel: [4294765.433000] [do_no_page+111/933]
do_no_page+0x6f/0x3a5
Jun 16 20:44:32 nano kernel: [4294765.433000]
[wireless_process_ioctl+1472/2023] wireless_process_ioctl+0x5c0/0x7e7
Jun 16 20:44:32 nano kernel: [4294765.433000] [handle_mm_fault+418/503]
handle_mm_fault+0x1a2/0x1f7
Jun 16 20:44:32 nano kernel: [4294765.433000] [pg0+677466488/1069794304]
ipw2100_wx_get_scan+0x0/0x16 [ipw2100]
Jun 16 20:44:32 nano kernel: [4294765.433000] [dev_load+38/112] dev_load+0x26/0x70
Jun 16 20:44:32 nano kernel: [4294765.433000] [dev_ioctl+270/790]
dev_ioctl+0x10e/0x316
Jun 16 20:44:32 nano kernel: [4294765.433000] [sock_ioctl+209/569]
sock_ioctl+0xd1/0x239
Jun 16 20:44:32 nano kernel: [4294765.433000] [do_ioctl+154/169] do_ioctl+0x9a/0xa9
Jun 16 20:44:32 nano kernel: [4294765.433000] [vfs_ioctl+101/481]
vfs_ioctl+0x65/0x1e1
Jun 16 20:44:32 nano kernel: [4294765.433000] [sys_ioctl+133/146]
sys_ioctl+0x85/0x92
Jun 16 20:44:32 nano kernel: [4294765.433000] [sysenter_past_esp+84/117]
sysenter_past_esp+0x54/0x75
Jun 16 20:44:32 nano kernel: [4294765.433000] Code: e0 05 8d 04 02 8b 54 24 34
8d 3c 30 0f be 42 5c 89 da 29 c1 c1 e2 04 89 c8 29 da c1 e0 05 29 c8 8d 04 42 0f
af c8 29 cf 89 f8 99 <f7> fe 89 c1 b8 64 00 00 00 80 f9 65 0f 42 c1 88 84 24 7c
01 00
Jun 16 20:44:32 nano kernel: [4294765.433000] <6>note: NetworkManager[7132]
exited with preempt_count 1
-----
I am on breezy,
uname -a: Linux nano 2.6.12-1-686 #1 Wed Jun 8 14:35:07 UTC 2005 i686 GNU/Linux

Revision history for this message
Christian Kellner (gicmo) wrote :
Download full text (4.7 KiB)

that's the PREEMPT crash thinggy with netapplet:

Jun 12 23:55:55 nano kernel: [4308676.735000] PREEMPT
Jun 12 23:55:55 nano kernel: [4308676.735000] Modules linked in: ipv6
binfmt_misc af_packet rfcomm l2cap speedstep_centrino cpufreq_conservative
cpufreq_stats freq_table cpufreq_userspace cpufreq_ondemand cpufreq_powersave
pcmcia hotkey video sony_acpi pcc_acpi button battery container ac asus_acpi lp
i915 drm sg sd_mod joydev parport_pc parport pcspkr psmouse rtc ipw2100
firmware_class ieee80211 ieee80211_crypt 8139cp 8139too mii ohci1394
yenta_socket rsrc_nonstatic pcmcia_core snd_intel8x0 snd_ac97_codec snd_pcm_oss
snd_mixer_oss snd_pcm tsdev snd_timer snd soundcore snd_page_alloc usb_storage
usbhid hci_usb bluetooth tpm_atmel tpm_nsc tpm shpchp pci_hotplug ehci_hcd
uhci_hcd usbcore intel_agp agpgart dm_mod evdev sbp2 ieee1394 ide_cd mousedev
sr_mod scsi_mod cdrom md ext3 jbd mbcache ide_disk ide_generic piix ide_core
unix thermal processor fan fbcon tileblit font bitblit vesafb cfbcopyarea
cfbimgblt cfbfillrect softcursor capability commoncap
Jun 12 23:55:55 nano kernel: [4308676.735000] CPU: 0
Jun 12 23:55:55 nano kernel: [4308676.735000] EIP:
0060:[pg0+677292777/1069794304] Not tainted VLI
Jun 12 23:55:55 nano kernel: [4308676.735000] EFLAGS: 00010093 (2.6.12-1-686)
Jun 12 23:55:55 nano kernel: [4308676.735000] EIP is at
ieee80211_wx_get_scan+0x7bd/0x9df [ieee80211]
Jun 12 23:55:55 nano kernel: [4308676.735000] eax: fffe54c8 ebx: 00000000
ecx: 0001ab38 edx: ffffffff
Jun 12 23:55:55 nano kernel: [4308676.735000] esi: 00000000 edi: fffe54c8
ebp: e4eade62 esp: e4eadcb0
Jun 12 23:55:55 nano kernel: [4308676.735000] ds: 007b es: 007b ss: 0068
Jun 12 23:55:55 nano kernel: [4308676.735000] Process netdaemon (pid: 7670,
threadinfo=e4eac000 task=e769f520)
Jun 12 23:55:55 nano kernel: [4308676.735000] Stack: e4eade5f 00000029 e89ad821
0000000b e89ad820 e5910077 e5d3e36c d696f060
Jun 12 23:55:55 nano kernel: [4308676.735000] 16001000 00000000 d696f092
d6970000 00000286 e5910000 deb78514 d3df12d0
Jun 12 23:55:55 nano kernel: [4308676.735000] c0224f51 c17ba4d4 cb491f00
00000008 dff76080 dce25490 00000000 c17ba4d4
Jun 12 23:55:55 nano kernel: [4308676.735000] Call Trace:
Jun 12 23:55:55 nano kernel: [4308676.735000] [ll_back_merge_fn+332/537]
ll_back_merge_fn+0x14c/0x219
Jun 12 23:55:55 nano kernel: [4308676.735000] [__make_request+627/1257]
__make_request+0x273/0x4e9
Jun 12 23:55:55 nano kernel: [4308676.735000] [generic_make_request+388/590]
generic_make_request+0x184/0x24e
Jun 12 23:55:55 nano kernel: [4308676.735000] [autoremove_wake_function+0/87]
autoremove_wake_function+0x0/0x57
Jun 12 23:55:55 nano kernel: [4308676.735000] [autoremove_wake_function+0/87]
autoremove_wake_function+0x0/0x57
Jun 12 23:55:55 nano kernel: [4308676.735000] [schedule+794/1574]
schedule+0x31a/0x626
Jun 12 23:55:55 nano kernel: [4308676.735000] [__generic_unplug_device+31/60]
__generic_unplug_device+0x1f/0x3c
Jun 12 23:55:55 nano kernel: [4308676.735000] [generic_unplug_device+28/54]
generic_unplug_device+0x1c/0x36
Jun 12 23:55:55 nano kernel: [4308676.735000] [io_schedule+14/22]
io_schedule+0xe/0x16
Jun 12 23:5...

Read more...

Revision history for this message
Christian Kellner (gicmo) wrote :

Ok, I booted the latest 2.6.10 kernel and indeed no crash with that kernel, so I
guess its really related to some ipw kernel module updates. (NetworkManager isnt
working with that kernel too but that's another story I guess)

Revision history for this message
Fabio Massimo Di Nitto (fabbione) wrote :

Known problem due to ipw2100 and ipw2200 commond code non-alligned upstream.
Also don't abuse of bug severities for a kernel that is not even supported yet.

Fabio

Revision history for this message
Christian Kellner (gicmo) wrote :

Thanks Fabio, I didn't mean to "abuse" bug severity here, it's just normal GNOME
bugzilla policy that crashers get Severity=Critical, Priority=High and since I
coudn't find such a guideline on your main bugzilla entry page I just used the
GNOME policy. Well thanks anyways.

Revision history for this message
Fabio Massimo Di Nitto (fabbione) wrote :

(In reply to comment #4)
> Thanks Fabio, I didn't mean to "abuse" bug severity here, it's just normal GNOME
> bugzilla policy that crashers get Severity=Critical, Priority=High and since I
> coudn't find such a guideline on your main bugzilla entry page I just used the
> GNOME policy. Well thanks anyways.

Don't worry, it's ok. but usually kernel is a bit of a special case due to its size.
We consider Major/Critical everything that doesn't make your pc to boot or eat
your machine :)
A non-essential (to boot) driver crash is usually minor/normal.

But you are right.. we should make this policy more clear.

Thanks
fabio

Revision history for this message
John Moser (nigelenki) wrote :

Is this fixed yet? I really want preempt back. . .
 (also consider allocating third level page tables to highmem)

Revision history for this message
John Moser (nigelenki) wrote :

On 2.6.13 home-built kernel, Preempt (full), 1000Hz, third level page tabels,
netapplet works for me, so a 2.6.13 kernel in Ubuntu with full preempt should be
a fine way to close this bug.

Revision history for this message
Ben Collins (ben-collins) wrote :

I'll consider this fixed in atleast dapper (probably breezy too).

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