Re: Warning when terminating wpa_supplicant (wext driver)

Luis R. Rodriguez
2009-05-09T01:16:21Z

On Fri, May 8, 2009 at 6:13 PM, Luis R. Rodriguez <mcgrof@gmail.com> wrote:
> On Fri, May 8, 2009 at 5:02 PM, Marcel Holtmann <marcel@holtmann.org> wrote:
>> Hi Johannes,
>>
>>> > > Copying Wey-Yi, but I think she's aware of this? It's definitely a
>>> > > driver issue. I _suspect_, but am not sure, that the driver kills the
>>> > > aggregation session when we disassoc or something and we only tell it
>>> > > about the STA removal after that, when it already killed the STA. Thus
>>> > > it would be a consequence of iwlwifi not implementing a proper
>>> > > sta_notify() callback.
>>> >
>>> > I don't see it with nl80211 driver, but that might be pure luck.
>>>
>>> Hmm, ok, that points to something else maybe... Now I wish I had my
>>> ftrace-mac80211 patch ready. Well, the patch is almost ready but we
>>> can't use ftrace in modules yet...
>>>
>>> Maybe there's some timing issue. I still think it's iwlwifi getting
>>> confused about what mac80211 is telling it as described, but it seems
>>> it's a little more subtle than what I said.
>>
>> something similar now happened during normal operation:
>
> Just curious, have you applied johill's latest idle fix patch? I've
> been running iperf overnight with it and my woes are gone. I tested RX
> though, I'm leaving TX running now but haven't yet seen any warn.

BTW the patch is

mac80211: fix scan channel race

Luis