Re: [Bug #14352] WARNING: at net/mac80211/scan.c:267

Maciej Rutecki
2009-11-27T20:22:40Z

2009/11/27 Sebastian Ott <sebott@linux.vnet.ibm.com>:
>
> On Tue, 17 Nov 2009, Rafael J. Wysocki wrote:
>
>> On Tuesday 17 November 2009, Maciej Rutecki wrote:
>> > 2009/11/16 Rafael J. Wysocki <rjw@sisk.pl>:
>> > > This message has been generated automatically as a part of a report
>> > > of recent regressions.
>> > >
>> > > The following bug entry is on the current list of known regressions
>> > > from 2.6.31.  Please verify if it still should be listed and let me know
>> > > (either way).
>> > >
>> > >
>> > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=14352
>> > > Subject         : WARNING: at net/mac80211/scan.c:267
>> > > Submitter       : Maciej Rutecki <maciej.rutecki@gmail.com>
>> > > Date            : 2009-10-08 00:30 (40 days old)
>> > > References      : http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2089#c7
>> > >
>> > >
>> >
>> > In 2.6.32-rc7 problem seems be fixed.
>>
>> Thanks, closing.
>
> looks like this one is still present in rc8:
>

I also observed once again this warning in -rc8. From syslog:
Nov 26 19:04:21 gumis kernel: [43497.192073] ------------[ cut here
]------------
Nov 26 19:04:21 gumis kernel: [43497.192102] WARNING: at
net/mac80211/scan.c:267 ieee80211_scan_completed+0x299/0
x2b0 [mac80211]()
Nov 26 19:04:21 gumis kernel: [43497.192110] Hardware name: HP Compaq
nx6310 (EY501ES#AKD)
Nov 26 19:04:21 gumis kernel: [43497.192115] Modules linked in:
xt_tcpudp xt_limit xt_state iptable_filter nf_con
ntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables i915
drm_kms_helper drm i2c_algo_bit i2c_core sco bnep
rfcomm l2cap crc16 vboxnetadp vboxnetflt vboxdrv fuse hp_wmi sbp2
loop aes_i586 aes_generic cbc dm_crypt dm_mod
snd_hda_codec_si3054 snd_hda_codec_analog arc4 ecb snd_hda_intel
snd_hda_codec snd_pcm_oss snd_mixer_oss snd_pcm
snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event
snd_seq iwl3945(-) snd_timer iwlcore firmwa
re_class snd_seq_device mac80211 btusb led_class snd pcmcia b44
bluetooth soundcore video cfg80211 yenta_socket i
ntel_agp ssb backlight rtc_cmos rsrc_nonstatic ohci1394 uhci_hcd
psmouse ehci_hcd rtc_core snd_page_alloc rfkill
serio_raw evdev ieee1394 agpgart rtc_lib mii pcmcia_core usbcore sg
output ac battery fan button
Nov 26 19:04:21 gumis kernel: [43497.192284] Pid: 4153, comm: rmmod
Tainted: G W 2.6.32-rc8 #1
Nov 26 19:04:21 gumis kernel: [43497.192291] Call Trace:
Nov 26 19:04:21 gumis kernel: [43497.192305] [<c03ec85c>] ? printk+0x1d/0x21
Nov 26 19:04:21 gumis kernel: [43497.192323] [<f8645a69>] ?
ieee80211_scan_completed+0x299/0x2b0 [mac80211]
Nov 26 19:04:21 gumis kernel: [43497.192335] [<c013c521>]
warn_slowpath_common+0x71/0xc0
Nov 26 19:04:21 gumis kernel: [43497.192353] [<f8645a69>] ?
ieee80211_scan_completed+0x299/0x2b0 [mac80211]
Nov 26 19:04:21 gumis kernel: [43497.192363] [<c013c58a>]
warn_slowpath_null+0x1a/0x20
Nov 26 19:04:21 gumis kernel: [43497.192380] [<f8645a69>]
ieee80211_scan_completed+0x299/0x2b0 [mac80211]
Nov 26 19:04:21 gumis kernel: [43497.192396] [<f8645ac9>]
ieee80211_scan_cancel+0x49/0x80 [mac80211]
Nov 26 19:04:21 gumis kernel: [43497.192414] [<f864ddc7>]
ieee80211_stop+0x587/0x590 [mac80211]
Nov 26 19:04:21 gumis kernel: [43497.192425] [<c03ef0d2>] ?
_spin_unlock_bh+0x12/0x20
Nov 26 19:04:21 gumis kernel: [43497.192439] [<c0378f0b>] dev_close+0x6b/0xc0
Nov 26 19:04:21 gumis kernel: [43497.192449] [<c0378fa6>]
rollback_registered+0x46/0x290
Nov 26 19:04:21 gumis kernel: [43497.192458] [<c01d13d1>] ?
add_partial+0x21/0x70
Nov 26 19:04:21 gumis kernel: [43497.192468] [<c037920e>]
unregister_netdevice+0x1e/0x70
Nov 26 19:04:21 gumis kernel: [43497.192477] [<c03ee0e9>] ?
mutex_lock+0x19/0x40
Nov 26 19:04:21 gumis kernel: [43497.192496] [<f864d384>]
ieee80211_remove_interfaces+0x74/0xb0 [mac80211]
Nov 26 19:04:21 gumis kernel: [43497.192506] [<c03ee0e9>] ?
mutex_lock+0x19/0x40
Nov 26 19:04:21 gumis kernel: [43497.192523] [<f8642090>]
ieee80211_unregister_hw+0x40/0xe0 [mac80211]
Nov 26 19:04:21 gumis kernel: [43497.192537] [<f8689540>]
iwl3945_pci_remove+0x70/0x5dd [iwl3945]
Nov 26 19:04:21 gumis kernel: [43497.192549] [<c015bb05>] ?
notifier_call_chain+0x35/0x70
Nov 26 19:04:21 gumis kernel: [43497.192563] [<c029edfe>]
pci_device_remove+0x1e/0x40
Nov 26 19:04:21 gumis kernel: [43497.192573] [<c0312166>]
__device_release_driver+0x56/0xa0
Nov 26 19:04:21 gumis kernel: [43497.192581] [<c0312237>]
driver_detach+0x87/0x90
Nov 26 19:04:21 gumis kernel: [43497.192594] [<c03113a3>]
bus_remove_driver+0x63/0xb0
Nov 26 19:04:21 gumis kernel: [43497.192604] [<c03127b9>]
driver_unregister+0x49/0x80
Nov 26 19:04:21 gumis kernel: [43497.192614] [<c02253d2>] ?
sysfs_remove_file+0x12/0x20
Nov 26 19:04:21 gumis kernel: [43497.192625] [<c029f045>]
pci_unregister_driver+0x35/0xa0
Nov 26 19:04:21 gumis kernel: [43497.192640] [<f8689abf>]
iwl3945_exit+0x12/0x19 [iwl3945]
Nov 26 19:04:21 gumis kernel: [43497.192651] [<c016e952>]
sys_delete_module+0x162/0x210
Nov 26 19:04:21 gumis kernel: [43497.192661] [<c01c573c>] ?
do_munmap+0x21c/0x270
Nov 26 19:04:21 gumis kernel: [43497.192671] [<c0122176>] ?
do_page_fault+0x176/0x2f0
Nov 26 19:04:21 gumis kernel: [43497.192682] [<c0102f04>]
sysenter_do_call+0x12/0x22
Nov 26 19:04:21 gumis kernel: [43497.192689] ---[ end trace
3daa09d98d92597c ]---

Regards
--
Maciej Rutecki