On Thu, 2017-05-04 at 07:35 +0300, Kalle Valo wrote: > Linus Torvalds <torva...@linux-foundation.org> writes: > > > So my Dell XPS 13 seems to have grown a new warning as of the > > networking merge yesterday. > > > > Things still work, but when it starts warning, it generates a *lot* of > > noise (I got 36 of these within about ten minutes). > > > > I have no idea what triggered it, because when I rebooted (not because > > of this issue, but just to reboot into a newer kernel) I don't see it > > again. > > > > This is all pretty regular wireless - it's intel 8260 wireless in a > > fairly normal laptop. > > > > Things still seem to *work* ok, so the only problem here is the overly > > verbose and useless WARN_ON. It doesn't even print out *which* rate it > > is warning about, it just does that stupid unconditional WARN_ON() > > without ever shutting up about it.. > > > > The WARN_ON() seems to be old, but my logs don't seem to have any > > mention of this until today, so there's something that has changed > > that now triggers it. > > > > Ideas? > > > > Linus > > > > --- > > > > WARNING: CPU: 3 PID: 1138 at net/wireless/util.c:1236 > > cfg80211_calculate_bitrate+0x139/0x170 [cfg80211] > > As this is with iwlwifi adding also Luca. There were some rate handling > changes in iwlwifi, like commit 77e409455f41, but don't know if that > could cause this.
Thanks Kalle. I don't see anything in the iwlwifi driver that could be causing this. Johannes suspects some RX rate changes he made in mac80211... -- Luca.
