On Wednesday 17 December 2008 13:02:50 Jouni Malinen wrote: > On Wed, Dec 17, 2008 at 12:30:56PM +0100, Johannes Berg wrote: > > On Wed, 2008-12-17 at 13:30 +0200, Jouni Malinen wrote: > > > It looks like mac80211 may try to send unicast frames to a STA that > > > does not have a STA entry. We need to make sure that that is caught in > > > the rate control code before dereferencing STA data. > > > > This should only happen for injected packets, can you verify? OTOH, AP > > mode obviously has injected packets (auth response, ...) > > I did not check what the exact frame was, but this was indeed in AP mode > and the frame was most likely from hostapd and as such, an injected > packet. > hostapd: wlan1: STA XX:XX:XX:XX:0d IEEE 802.11: authenticated kernel: [ 3130.431067] ------------[ cut here ]------------ kernel: [ 3130.431076] WARNING: at net/mac80211/rc80211_minstrel.c:69 minstrel_rate_init+0xb8/0x320 [mac80211]() kernel: [ 3130.431081] Modules linked in: p54usb p54pci p54common [...] kernel: [ 3130.431300] Pid: 16961, comm: hostapd2 Tainted: P 2.6.28-rc7-wl #3 [ 3130.431305] Call Trace: [ 3130.431318] [<ffffffff802343c1>] warn_on_slowpath+0x51/0x75 [ 3130.431329] [<ffffffff803d74b0>] rb_insert_color+0xba/0xe2 [ 3130.431338] [<ffffffff802480ef>] __remove_hrtimer+0x7c/0x88 [ 3130.431375] [<ffffffffa00bd30e>] minstrel_rate_init+0xb8/0x320 [mac80211] [ 3130.431417] [<ffffffffa00ae713>] ieee80211_add_station+0x145/0x17d [mac80211] hostapd: wlan1: STA XX:XX:XX:XX:0d IEEE 802.11: associated (aid 1, accounting session 494187DD-00000000) kernel: [ 3130.431440] [<ffffffffa00897af>] nl80211_new_station+0x1b3/0x20b [cfg80211] kernel: [ 3130.431450] [<ffffffff80595691>] mutex_lock+0xd/0x1e kernel: [ 3130.431459] [<ffffffff804f6f86>] nla_parse+0x4b/0xb2 yup, the Warning just happend right between auth and assoc Regards, Chr -- 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
