WARNING at net/wireless/reg.c when wireless network is disconnected
in [Kernel]
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From: Thomas Bächler on 4 Aug 2010 07:40 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 ]---
From: Thomas Bächler on 4 Aug 2010 10:30
Am 04.08.2010 15:49, schrieb John W. Linville: > On Wed, Aug 04, 2010 at 01:36:23PM +0200, Thomas Bächler wrote: >> 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 > > Perhaps you need to set the regdomain as "DE" rather than "de"? > > John You are actually right. I did set it to "DE" with iw, but wpa_supplicant had a setting country="de". I just fixed that and will soon see if the problem disappears. Still, the warning shouldn't look like a bad kernel bug, but rather an advisory to the user to set something sane. What confuses me even more is that this has been set to DE afterwards: $ dmesg | grep cfg80211:\ Calling\ CRDA cfg80211: Calling CRDA to update world regulatory domain cfg80211: Calling CRDA for country: de cfg80211: Calling CRDA for country: DE cfg80211: Calling CRDA to update world regulatory domain cfg80211: Calling CRDA for country: DE cfg80211: Calling CRDA to update world regulatory domain cfg80211: Calling CRDA for country: DE cfg80211: Calling CRDA to update world regulatory domain cfg80211: Calling CRDA for country: DE cfg80211: Calling CRDA to update world regulatory domain cfg80211: Calling CRDA for country: DE cfg80211: Calling CRDA to update world regulatory domain cfg80211: Calling CRDA for country: DE The AP has been playing with the regdom as well, I lost track of what has been set where in this mess. |