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Subject: Re: Problem with IEEE80211_MONITORING_INTERVAL
From: Johannes Berg <johannes@sipsolutions.net>
To: Marcel Holtmann <marcel@holtmann.org>
Cc: linux-wireless@vger.kernel.org, Jouni Malinen <j@w1.fi>
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Date: Wed, 22 Apr 2009 11:03:49 +0200
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Hi,

> one other weird thing happens now (except wireless-testing tree and
> suspend/resume is broken). The first connection attempt fails horribly:
>=20
> CTRL-EVENT-SCAN-RESULTS=20
> Trying to authenticate with 00:23:ab:xx:xx:xx (SSID=3D'Guest' freq=3D2412=
 MHz)
> Trying to associate with 00:23:ab:xx:xx:xx (SSID=3D'Guest' freq=3D2412 MH=
z)
> Associated with 00:23:ab:xx:xx:xx
> CTRL-EVENT-CONNECTED - Connection to 00:23:ab:xx:xx:xx completed (auth) [=
id=3D2 id_str=3D]
> CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
> l2_packet_receive - recvfrom: Network is down
> Failed to initiate AP scan.
> Failed to initiate AP scan.
> ^CCTRL-EVENT-TERMINATING - signal 2 received
>=20
> So starting wpa_supplicant does its job fine, then running dhclient I
> end up in the disconnect and network down and after that scanning fails.

???

And the below kernel message is all yo uget?

> Killing wpa_supplicant and dhclient and then trying again works fine. So
> far I have seen that only after a fresh boot.
>=20
> Found this one in dmesg:
>=20
> ------------[ cut here ]------------
> WARNING: at net/wireless/nl80211.c:205 nl80211_send_wiphy+0x4b/0x988
> [cfg80211]()
> Hardware name: 7454CTO
> Modules linked in: fuse rfcomm sco bnep l2cap binfmt_misc
> snd_hda_codec_conexant iwlagn iwlcore snd_hda_intel i2400m_usb
> snd_hda_codec i2400m mac80211 uvcvideo snd_pcm btusb snd_timer snd wimax
> cfg80211 soundcore bluetooth snd_page_alloc uhci_hcd ehci_hcd [last
> unloaded: microcode]
> Pid: 3274, comm: wpa_supplicant Tainted: G        W  2.6.30-rc2-wl #1
> Call Trace:
>  [<ffffffff80236604>] warn_slowpath+0xb1/0xe5
>  [<ffffffff8039a44a>] ? extract_buf+0x84/0xe4
>  [<ffffffffa0055e04>] nl80211_send_wiphy+0x4b/0x988 [cfg80211]

What tree are you using? This warning totally confuses me -- there's no
code to produce it! It was a spurious warning Luis added some time ago,
we removed right away again and now it's haunting us.

johannes

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