linux-kernel - WARNING at net/wireless/reg.c when wireless network is disconnected

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Date:	Wed, 04 Aug 2010 13:36:23 +0200
From:	Thomas Bächler <thomas@...hlinux.org>
To:	linux-wireless@...r.kernel.org
CC:	linux-kernel@...r.kernel.org,
	Johannes Berg <johannes@...solutions.net>,
	"Luis R. Rodriguez" <lrodriguez@...eros.com>
Subject: WARNING at net/wireless/reg.c when wireless network is disconnected

Hello,

this warning has been around ever since I switched to 2.6.34, has
accompanied me through the 2.6.35-rc* phase and is still there with
2.6.35. I didn't bother to report it so far, as there seems to be no harm.

Whenever I disconnect/get disconnected from the wireless, I receive the
below warning:

------------[ cut here ]------------
WARNING: at net/wireless/reg.c:272
regulatory_hint_disconnect+0x1b3/0x230 [cfg80211]()
Hardware name: TECRA A11
Unexpected user alpha2: de
Modules linked in: hidp rfcomm sco bnep l2cap bridge stp llc microcode
cpufreq_ondemand tun btusb bluetooth uvcvideo videodev tpm_infineon
v4l2_compat_ioctl32 arc4 snd_seq_dummy snd_seq_oss ecb
snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss
snd_hda_codec_intelhdmi snd_mixer_oss snd_hda_codec_realtek
snd_hda_intel snd_hda_codec ath9k snd_hwdep kvm_intel ath9k_common kvm
snd_pcm ath9k_hw snd_timer snd tpm_tis ehci_hcd ath sdhci_pci
acpi_cpufreq sdhci soundcore mac80211 freq_table mmc_core tpm cfg80211
usbcore snd_page_alloc tpm_bios e1000e mperf led_class psmouse sr_mod
iTCO_wdt sg evdev toshiba_acpi toshiba_bluetooth cdrom battery ac
thermal processor rfkill nls_base rtc_cmos rtc_core rtc_lib fpu
aesni_intel cryptd aes_x86_64 aes_generic xts gf128mul dm_crypt dm_mod
sd_mod ahci libahci libata scsi_mod ext4 mbcache jbd2 crc16 i915
drm_kms_helper drm i2c_algo_bit cfbcopyarea video backlight output
cfbimgblt cfbfillrect intel_agp agpgart
Pid: 15, comm: events/0 Not tainted 2.6.35 #28
Call Trace:
 [<ffffffff8103e98b>] ? warn_slowpath_common+0x7b/0xc0
 [<ffffffffa0337760>] ? disconnect_work+0x0/0x30 [cfg80211]
 [<ffffffff8103ea85>] ? warn_slowpath_fmt+0x45/0x50
 [<ffffffffa0337760>] ? disconnect_work+0x0/0x30 [cfg80211]
 [<ffffffffa0325163>] ? regulatory_hint_disconnect+0x1b3/0x230 [cfg80211]
 [<ffffffffa0337760>] ? disconnect_work+0x0/0x30 [cfg80211]
 [<ffffffff81052df8>] ? worker_thread+0x158/0x230
 [<ffffffff810574d0>] ? autoremove_wake_function+0x0/0x30
 [<ffffffff81052ca0>] ? worker_thread+0x0/0x230
 [<ffffffff8105703e>] ? kthread+0x8e/0xa0
 [<ffffffff810032d4>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81056fb0>] ? kthread+0x0/0xa0
 [<ffffffff810032d0>] ? kernel_thread_helper+0x0/0x10
---[ end trace cbb09501d5faaa20 ]---


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