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Date:   Mon, 14 Mar 2022 12:51:38 +0100
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To:     golan.ben.ami@intel.com, Luca Coelho <luciano.coelho@intel.com>
Cc:     Udo Steinberg <udo@hypervisor.org>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
        "regressions@lists.linux.dev" <regressions@lists.linux.dev>
From:   Thorsten Leemhuis <regressions@leemhuis.info>
Subject: Bug 215635 - iwlwifi: Firmware crash with firmware 36.ca7b901d.0
 (8265-36.ucode)
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Hi, this is your Linux kernel regression tracker.

I noticed a regression report in bugzilla.kernel.org that afaics isn't
properly handled, that's why I decided to forward it to the lists and a
few relevant people to the CC. To quote from
https://bugzilla.kernel.org/show_bug.cgi?id=215635 :

> Seeing the following firmware crash frequently with
> firmware-version: 36.ca7b901d.0 8265-36.ucode
> 
> [...]
> 
> Afterwards iwlwifi is entirely unusable, i.e. the hardware does not recover.

> I have not been able to observe the problem with 5.15.x so far.
> 
> The problem manifests either by Wi-Fi becoming entirely unresponsive (not even ping to gateway works anymore) or by producing a firmware crash.
> 
> In response to #3, the problem was most recently observed as a firmware crash on Linux 5.16.13. HW is Intel Corporation Wireless 8265 / 8275 (rev 78) (Windstorm Peak) and firmware version 36.ca7b901d.0 8265-36.ucode.
> 
> I'm attaching the dmesg output from 5.16.13 (with the TWT patch mentioned above applied) which includes a firmware crash.

Could somebody take a look into this? Or was this discussed somewhere
else already? Or even fixed?

Anyway, to get this tracked:

#regzbot introduced: v5.15..v5.16
#regzbot from: Udo Steinberg <udo@hypervisor.org>
#regzbot title: wireless: iwlwifi: Firmware crash frequently with
firmware 36.ca7b901d.0 (8265-36.ucode)
#regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215635

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)

P.S.: As the Linux kernel's regression tracker I'm getting a lot of
reports on my table. I can only look briefly into most of them and lack
knowledge about most of the areas they concern. I thus unfortunately
will sometimes get things wrong or miss something important. I hope
that's not the case here; if you think it is, don't hesitate to tell me
in a public reply, it's in everyone's interest to set the public record
straight.

-- 
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