linux-kernel - Fwd: iwlwifi: rfkill locking up kernel 6.5.12, 6.6.2

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Message-ID: <af62295b-b757-49ec-83ce-9d3ef93e24af@leemhuis.info>
Date:   Sat, 2 Dec 2023 07:07:48 +0100
From:   "Linux regression tracking (Thorsten Leemhuis)" 
        <regressions@...mhuis.info>
To:     Johannes Berg <johannes@...solutions.net>
Cc:     Eliad Peller <eliad@...ery.com>,
        "John W. Linville" <linville@...driver.com>,
        Gregory Greenman <gregory.greenman@...el.com>,
        Linus Lotz <register+kernelbugzilla@...z.li>,
        Darrell Enns <darrell@...rellenns.com>,
        Bagas Sanjaya <bagasdotme@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux Wireless <linux-wireless@...r.kernel.org>
Subject: Fwd: iwlwifi: rfkill locking up kernel 6.5.12, 6.6.2

Hi!

On 30.11.23 09:23, Bagas Sanjaya wrote:
> 
> I notice a regression report on Bugzilla [1]. Quoting from it:
> 
>> Rfkilling the iwlwifi can lock up my machine, rfkill will not
>> respond and other networking related things (e.g. ip a or ip r) I
>> see this on 6.5.12 and 6.6.2 (fedora kernel). On 6.5.11 it does not
>> lockup AFAICT, but also shows kernel oops. WiFi Hardware: AC 8265
> 
> [...]
> 
> [1]: https://bugzilla.kernel.org/show_bug.cgi?id=218206

TWIMC: More people that seem to be affected by the same problem joined
the report. And one user performed a bisection on 6.6.y. According to
that the problem is caused by a 6.6.y-backport of 37fb29bd1f90f1 ("wifi:
iwlwifi: pcie: synchronize IRQs before NAPI") [v6.7-rc1] from Johannes.

Another reported user also stated that the same problem happens on
6.7-rc3 as well. No confirmation yet that 37fb29bd1f90f1 causes it
there, but it seems likely.

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.

P.S.: Due to the above I'll wrt to regression tracking for now assume
that 37fb29bd1f90f1 causes the problem.

#regzbot introduced: 37fb29bd1f90f1