[ath9k-devel] modprobe ath9k == BUG: unable to handle kernel NULL pointer dereference at 000001dc

[Masashi Honma <honma@ictec.co.jp>]

> On Sun Feb 8 04:14:02 CET 2009, Joseph Cheek wrote:

> # egrep '(No.Probe|PCI.FATAL)' /var/log/messages
> Feb  7 15:12:50 harrisburg ath9k: received PCI FATAL interrupt

Hello.

I encountered identical error on Debian sid.

[  467.614789] ath9k: received PCI FATAL interrupt
[  714.384969] ath9k: received PCI FATAL interrupt
[  729.166142] ath9k: received PCI FATAL interrupt
[  774.222352] ath9k: received PCI FATAL interrupt
[  819.272511] ath9k: received PCI FATAL interrupt

I can't ping with wpa_supplicant + ath9k driver.
WPA2-PSK connection is ok (GTK exchange succeeded).
But wpa_supplicant doesn't sends ping request.
I'm capturing wpa_supplicant wireless frame, but it doesn't
send any frame.

After that, I changed the card to ath5k device.
Then I can ping with same settings.
But I need to use ath9k, because I wnat 802.11w support.

My environment is these.

[uname -a]
Linux debian 2.6.29 #1 SMP Mon Apr 6 10:56:46 JST 2009 i686 GNU/Linux

[wireless card]
WL300NC (AR5416+AR5133)

[compat-wireless]
compat-wireless-2009-04-05

[CRDA]
crda-1.0.1

[CRDA-rule]
/etc/udev/rules.d/91-regulatory.rules

KERNEL=="regulatory*", ACTION=="change", SUBSYSTEM=="platform", RUN+="/sbin/crda"

[CRDA log]
debian:~# dmesg | grep CRDA
[    6.669048] cfg80211: Calling CRDA for country: US
[    7.377956] cfg80211: Calling CRDA for country: JP
debian:~#

[wireless-regdb]
wireless-regdb-2009.03.09

[wpa_supplicant]
newest on git snapshot
http://hostap.epitest.fi/gitweb/gitweb.cgi?p=hostap.git;a=snapshot;h=a0b2f99bd7f608236e8a2e650655a79280248740;sf=tgz

[.config]
CONFIG_DRIVER_NL80211=y
CONFIG_DRIVER_WIRED=y
CONFIG_IEEE8021X_EAPOL=y
CONFIG_EAP_MD5=y
CONFIG_EAP_MSCHAPV2=y
CONFIG_EAP_TLS=y
CONFIG_EAP_PEAP=y
CONFIG_EAP_TTLS=y
CONFIG_EAP_GTC=y
CONFIG_EAP_OTP=y
CONFIG_EAP_LEAP=y
CONFIG_EAP_TNC=y
CONFIG_WPS=y
CONFIG_PKCS12=y
CONFIG_SMARTCARD=y
CONFIG_CTRL_IFACE=y
CONFIG_BACKEND=file
CONFIG_PEERKEY=y
CONFIG_IEEE80211W=y
CONFIG_TLS=internal
CONFIG_INTERNAL_LIBTOMMATH=y
CONFIG_IEEE80211R=y

[wpa_supplicant.conf]
ctrl_interface=/var/run/wpa_supplicant

country=JP

network={
	ssid="wpa-eap"
	key_mgmt=WPA-PSK
	proto=WPA2
	pairwise=CCMP
	group=CCMP
	psk="12345678"
}


Is there any idea ?

Regards,
Masashi Honma.