I was able to get this oops from my home laptop this morning using master-2009-05-18 with ath9k on 5 GHz with WPA2 with an 11n AP, HT40 set. I was able to reproduce twice by using wpa_supplicant on the interface, and then manually generating a scan. The oops would happen immediately. I figured I'd take it up at the office but I haven't been able to reproduce. So here are the pictures for those interested. This indicates there was an oops while in_interrupt(). I was unable to pull anything out of the laptop through netconsole. The only way I was able to capture the oops was through CONFIG_FB_VESA=y and a high vesa fb resolution. Its as good as it gets. According to gdb with my local ath9k.ko (it should be a bit different than my home machine's) ath_get_rate+0x468 translates to: (gdb) l *(ath_get_rate+0x468) 0x202f8 is in ath_get_rate (drivers/net/wireless/ath/ath9k/rc.c:744). 739 } 740 741 if (rate > (ath_rc_priv->rate_table_size - 1)) 742 rate = ath_rc_priv->rate_table_size - 1; 743 744 ASSERT((rate_table->info[rate].valid && 745 (ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG)) || 746 (rate_table->info[rate].valid_single_stream && 747 !(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG))); This seems familiar, I believe I had run into it last but last time I looked I didn't see where this could have been caused. I'm inclined to lift this assert, leave a WARN and use the lowest rate for now. IIRC last I checked my hunch on this was that we don't protect the private RC data nor do we provide an API for this to drivers. Not sure what is best here. Johannes -- is this related to the RX race you were mentioning? http://bombadil.infradead.org/~mcgrof/oops-img/2009-05-19/01.jpg http://bombadil.infradead.org/~mcgrof/oops-img/2009-05-19/02.jpg http://bombadil.infradead.org/~mcgrof/oops-img/2009-05-19/03.jpg http://bombadil.infradead.org/~mcgrof/oops-img/2009-05-19/04.jpg Luis -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
