On 2010-04-19 7:41 PM, Richard Zidlicky wrote: > > Hi, > >> > I am getting tons of these http://www.kerneloops.org/submitresult.php?number=3048061, >> > appears every packet triggers that. >> >> The warning comes from the function rix_to_ndx() in rc80211_minstrel.c: >> >> /* convert mac80211 rate index to local array index */ >> static inline int >> rix_to_ndx(struct minstrel_sta_info *mi, int rix) >> { >> int i = rix; >> for (i = rix; i >= 0; i--) >> if (mi->r[i].rix == rix) >> break; >> WARN_ON(i < 0); >> return i; >> } >> >> > Can provide lots of debugging info. >> >> My impression is that WARN_ON is not warranted in that function, but it >> would be interesting to know how you got to that point. > > I am using the rt73usb, WEP, adhoc, fixed rate(11M) on both ends: > > wlan0 IEEE 802.11bg ESSID:"XXXXXXXX" > Mode:Ad-Hoc Frequency:2.442 GHz Cell: F6:B2:CB:FC:62:6C > Tx-Power=20 dBm > Retry long limit:7 RTS thr:off Fragment thr:off > Encryption key: XXXXXXXXXX > Power Management:on > > It is 2.6.34-rc4, no compat-wireless. > > As of unusual circumstances - the rt73usb driver has some bug that causes > very high retransmit rates. On the opposite end the ath5k driver complains "cant > handle jumbo frames". > I had it perfectly working some time ago but need to figure out which off the many > patches did it and apply it to the new kernel. > This might stress minstrel more than needed but otoh it was my impression that the > warning was triggered by every single packet. > > Let me know if you want any more info. This warning typically shows up, whenever the driver reports a rate to minstrel in the tx status that is not part of the supported/negotiated rate set - that's the reason the index lookup above fails. - Felix -- 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
