Linux freezes after a time while running

[Michal Kazior]

On 16 November 2016 at 23:21, Conrad Kostecki <ck+ath10k at bl4ckb0x.de> wrote:
> Hello Michal,
>
> Am 07.11.2016 17:43:02, "Michal Kazior" <michal.kazior at tieto.com> schrieb:
>
>>
>> I assume you used a different kernel in the past compared to the
>> recent test you did. You could try re-testing the older kernel
>> (assuming you remember which one it was) and if it works you could
>> bisect your way to find the commit that breaks it for you.
>>
>>
> I don't have the older kernel config anymore, but it was pretty the same, as
> my current one.
> I've now done some tests and it's quite interesseting. Kernelversion did not
> matter for me.
>
> Running with current firmware-5.bin, it's always crashing. I tried different
> BIOS options, nothing helped.
>
> BUT: Downgrade to firmware-2.bin helps.
> ath10k_pci 0000:03:00.0: firmware ver 10.1.467.3-1 api 2 features wmi-10.x,
> has-wmi-mgmt-tx,no-p2p crc32 2c3ffc2f
>
> Running such old firmware, the Wifi just runs stable. NO firmware crash
> happens. When I just change firmware back to firmware-5.bin, it crashes
> again.
> So there seems to changed something. Can be this debugged somehow?
>
> With firmware-2.bin, I am also getting such errors, but WiFi works fine:
> [   82.504901] ath10k_pci 0000:03:00.0: SWBA overrun on vdev 0, skipped old
> beacon
> [   82.556103] ath10k_pci 0000:03:00.0: SWBA overrun on vdev 1, skipped old
> beacon
> [   87.113085] ath10k_warn: 89 callbacks suppressed
>
> Currently, the workaround is for me firmware-2.bin, but IMHO it's not a
> solution..
> Any Ideas?

Hmm.. looks like there's a stall in target-host communication for ~5
seconds (89 suppressed warnings match 2 vifs beaconing at ~100ms
interval).

Did you try running without multi-BSS, i.e. just one AP vif? That's
probably not going to help but it's worth ruling that out.


Michał