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Re: iwlwifi: FW error in SYNC CMD MAC_CONTEXT_CMD

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Hi Anreas,

On Mon, 2015-09-07 at 15:40 +0200, Andreas Reis wrote:
> Updated to
> net.git: 46cdc9b (ie. with mac80211 2015-09-04)
> + iwlwifi-next.git commits up to 5bff653
> iwlwifi firmware: 16.215201.0
> 
> now connecting to my WPA-802.1X with a Intel 7260 fails, see dmesg.
> 
>  From the wifi's wpa_supplicant file (actually wicd somehow
> accumulated 
> different ones for this SSID, but the following should be it):
>      proto=RSN
>      key_mgmt=WPA-EAP
>      pairwise=CCMP
>      eap=PEAP
>      phase2="auth=MSCHAPv2"
> 
> Meanwhile my WPA2-PSK at home still works.

According to the dmesg you attached, it seems that we're bouncing
between two APs:

[  214.644607] wlp2s0: authenticate with 9c:1c:12:c1:26:82
...
[  214.798595] wlp2s0: deauthenticated from 9c:1c:12:c1:26:82 (Reason: 3=DEAUTH_LEAVING)
...
[  218.001901] wlp2s0: authenticate with 18:64:72:26:de:22
...
[  218.054498] wlp2s0: deauthenticated from 18:64:72:26:de:22 (Reason: 3=DEAUTH_LEAVING)

It seems that your system is trying to connect to two different APs
forth and back.  After each association succeeds, the userspace seems
to trigger a deauth (DEAUTH_LEAVING) and goes to the other AP again...

This sometimes indicates that two instances of wpa_supplicant are
competing with each other.  Can you check whether you have more than
one wpa_supplicant instance running?

In any case, there seems to be a driver bug at some point, because we
get a firmware SYSASSERT.  To debug that, could you follow the
directions in our debugging wiki page [1] and create a bug in bugzilla?
Please provide trace-cmd logs (as explained in the wiki) so we can try
to figure out what is going on.

One final question, was this working before you upgraded to iwlwifi
-next 5bff6536f742?

Thanks for reporting!

[1] https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/debugging

--
Cheers,
Luca.
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