Re: [iwlwifi] 6.3 regression, AX201 crash on traffic activity with Pixel 7, bisected

[Bagas Sanjaya <bagasdotme@gmail.com>]

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On Fri, May 05, 2023 at 02:29:14AM +0500, evgeny nikiforov wrote:
> Hello
> I have a laptop with Intel Wi-Fi 6 AX201.
> After updating from 6.2 to 6.3, I'm experiencing wifi crashes, wifi
> restart when traffic is flowing with Pixel 7 Pro (wifi 6E/802.11ax).
> Other older wifi devices probably not affected (tried Xiaomi pad with
> wifi 5/802.11ac).
> Tested with iperf3 in both directions, rsyncing Pixel photos to
> laptop, via router (wifi 5) or via Pixel wifi hotspot.
> The whole system freezes for seconds, no cursor movements possible at
> these moments (libinput "Touch jump detected and discarded" in logs
> indicating this).
> No problem with the 6.2 kernel.
> 
> Bisecting leads to this commit of bumping FW API to 74
> 9ad1e7e5b0c488e4518edd698238a87ac6a73caa,
> looking strange to me, but reverting from 74 to 72 in 6.3 indeed
> successful with no crash.

Thanks for the report. However, it is better to also attach your .config
so that people here can know which config options are enabled (and your
hardware setup).

Interestingly, when I see the culprit commit, it looks trivial to me:
it just bumps maximum firmware API version, so theoretically drivers
using lower API version should continue to work. Maybe you got
one of your bisection steps wrong.

Anyway, I'm adding this to regzbot:

#regzbot ^introduced: 9ad1e7e5b0c488
#regzbot title: AX201 crash on traffic activity due to firmware API bump

Thanks.

-- 
An old man doll... just what I always wanted! - Clara

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