On Thu, Feb 12, 2009 at 03:19:42AM -0800, Kostas Nakos wrote: > Hello list, > > I have a pair of ath9k wireless adapters. One of them is on a > powerpc-based board, with compat-wireless cross compiled, acting as an > AP with hostapd; the other one is on a x86 pc using a mini-pci to pci > card, also running compat-wireless. Both cards are identical, as ath9k > reports the following info: > > phy0: Atheros AR9160 MAC/BB Rev:1 AR5133 RF Rev:b0: > > The host and the station run the 2.6.28 kernel. The host (powerpc) has > compat-wireless-20090205 while the client (pc) has compat-wireless-20090211. > > The client connects and works OK when the AP is set to use channel 9 and > ieee80211n=1 in hostapd. When we additionally supply ht_capab=[HT40-] > to hostapd, the client crashes with a kernel panic. Please find > attached: messages.txt which contains the panic message of such a crash > from /var/log/messages, and ath9kcrash.txt which contains the first few > functions as reported in such a crash in the console of the pc and > written down by hand by me. > > If it is any help, searching around, as this issue has been around for > at least a month in compat-wireless, I stumbled upon a similar bug > report here: > https://bugzilla.redhat.com/show_bug.cgi?id=472372 > which John has marked as a duplicate bug. > > > > As an aside, it'd be nice to know if such a setup can achieve actual > tx/rx rates that are in the neighborhood of 11n, e.g. greater than g > speeds, using the setup we have: 2xath9k+hostapd+wpa_supplicant. I may > be jumping the gun here, but we've been trying to test for this the last > month and the crashes deter us. > > Best Regards, > Kostas
Content-Description: messages.txt > Feb 12 12:15:40 bender kernel: [ 73.168441] ------------[ cut here > ]------------ > Feb 12 12:15:40 bender kernel: [ 73.168444] WARNING: at > /home/knakos/Work/compat-wireless-2009-02-11/include/net/mac80211.h:2048 > ath_get_rate+0x9f/0x600 [ath9k]() I don't see a kernel panic, I see a kernel warning, which is non-fatal, it should not crash your box. This rate control related so will let someone more familiar with rate control comment on that. Luis _______________________________________________ ath9k-devel mailing list [email protected] https://lists.ath9k.org/mailman/listinfo/ath9k-devel
