Hi Toralf,

On Sun, Dec 27, 2015 at 1:28 PM, Toralf Förster <toralf.foers...@gmx.de> wrote:
> Yesterday I got this warning for the first time while using WLAN in a train, 
> I'm unsure if this warning is worth to be reported or not :
>
>
> Dec 26 20:26:48 t44 kernel: [45827.647635] cfg80211:   (5490000 KHz - 5710000 
> KHz @ 160000 KHz), (N/A, 2700 mBm), (0 s)
> Dec 26 20:26:48 t44 kernel: [45827.647637] cfg80211:   (57000000 KHz - 
> 66000000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
> Dec 26 20:26:48 t44 kernel: [45827.700734] ------------[ cut here 
> ]------------
> Dec 26 20:26:48 t44 kernel: [45827.700762] WARNING: CPU: 0 PID: 1498 at 
> net/mac80211/driver-ops.h:647 ieee80211_sta_wmm_params+0x3f7/0x410 
> [mac80211]()
> Dec 26 20:26:48 t44 kernel: [45827.700764] wlp3s0: invalid CW_min/CW_max: 
> 127/3

Johannes is currently on vacation just like many people :)
Yes, this kind of WARNING can be triggered by a bad AP and since we
now know there are such APs, I think we need to not to WARN but log an
error much less noisy error message instead. Usually Johannes says he
dislike WARNINGs that can be triggered by an existing (faulty)
environment, and that WARNINGs should catch internal kernel bugs. So
this should not be a WARNING.
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