ath10k: Firmware crash after removing VAP

[Michal Kazior]

On 18 July 2013 07:21, Ben Greear <greearb at candelatech.com> wrote:
> On 07/17/2013 10:12 PM, Michal Kazior wrote:
>>
>> Hi Ben,
>>
>> On 17 July 2013 23:20, Ben Greear <greearb at candelatech.com> wrote:
>>>
>>> I had vap1 on an ath10k NIC, and wlan2 also existed.  I deleted
>>> the vap1, and very shortly afterwords, the firmware crashed:
>>>
>>> ath10k: firmware crashed!
>>> ath10k: hardware name qca988x hw2.0 version 0x4100016c
>>> ath10k: firmware version: 1.0.0.636
>>> ath10k: target register Dump Location: 0x00401930
>>> ath10k: target Register Dump
>>> ath10k: [00]: 0x4100016C 0x00000000 0x0098EEF0 0x00000000
>>> ath10k: [04]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [08]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [12]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [16]: 0x00000000 0x00000000 0x00000000 0x0098EEF0
>>> ath10k: [20]: 0x00000000 0x00401930 0x00000000 0x00000000
>>> ath10k: [24]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [28]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [32]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [36]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [40]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [44]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [48]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [52]: 0x00000000 0x00000000 0x00000000 0x00000000
>>> ath10k: [56]: 0x00000000 0x00000000 0x00000000 0x00000000
>>
>>
>> This dump looks suspicious. Are you using vanilla kernel or do you
>> have a ath regulatory hack patch from OpenWRT applied? If so the
>> channel scan list is not sent to the firmware and this will cause
>> firmware to crash.
>
>
> I had some of my own patches in the 3.11 kernel.  I tried the vanilla ath
> kernel from github and it crashes when adding a second station.
>
> Can you (or whoever has firmware access) get something resembling a
> stack trace from the firmware dump to see where it's crashing?

I don't have access to the firmware to do such a thing.


> Has anyone been able to successfully use more than one station with
> ath10k so far?

Well, it works for me on ath branch.

I'm able to successfully associate 2 STA interfaces or a couple of AP
interfaces through hostapd's multi bssid support.

One thing you should know - it's impossible to associate with two
ath10k STA interfaces to the same AP. This is a firmware limitation
and I'm guessing you're trying to do that because 'Failed to add peer'
is visible in your other logs.


Pozdrawiam / Best regards,
Michał Kazior.