Johannes Berg <johannes@xxxxxxxxxxxxxxxx> writes: > On Tue, 2019-12-10 at 13:46 -0700, Jens Axboe wrote: >> Hi, >> >> Since the GRO issue got fixed, iwlwifi has worked fine for me. >> However, on every boot, I get some warnings: >> >> ------------[ cut here ]------------ >> STA b4:75:0e:99:1f:e0 AC 2 txq pending airtime underflow: 4294967088, 208 > > Yeah, we've seen a few reports of this. FWIW I've tried reproducing but I don't get the error with the 8265 / 8275 chip in my laptop. I've thought about sending a patch for mac80211 to just clear the tx_time_est field after calling ieee80211_sta_update_pending_airtime() - that should prevent any errors from double-reporting of skbs (which is what I'm guessing is going on here). However, it kinda feels like a band-aid so I'd much rather figure out why this particular driver/device combo cause this :) > I guess I kinda feel responsible for this since I merged the AQL work, > I'll take a look as soon as I can. Sounds good, thanks! -Toke
