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Bug#1068249: linux-image-6.1.0-18-amd64: ax201 iwlwifi driver creates millions of 'Unhandled alg: 0x33f0707' messages



On Tuesday, 2 April 2024 19:54:41 CEST J. Pfennig wrote:
> Package: src:linux
> Version: 6.1.76-1
> Severity: important
> Tags: upstream

I am/was inclined to remove that tag, but the problem is likely caused by 
firmware which is too old for the 'backported' patches that upstream applied.

> The driver fills the eventlog with millions !!! of messages, see below.
> It otherwise works. The problem can be reproduced on different NUC systems.

If you downgrade the kernel version, does the issue then go away?

> ** Kernel log:
> [30911.569896] BTRFS info (device sda4): disk space caching is enabled
> [30974.905443] net_ratelimit: 67420 callbacks suppressed
> [30974.905457] iwlwifi 0000:00:14.3: Unhandled alg: 0x33f0707
> [30974.905728] iwlwifi 0000:00:14.3: Unhandled alg: 0x33f0707
> [30974.906036] iwlwifi 0000:00:14.3: Unhandled alg: 0x33f0707

https://unix.stackexchange.com/a/721474 looks related and the solution is to 
upgrade the firmware to a newer version.
That isn't available on Stable, but grabbing ``firmware-iwlwifi`` from Testing 
should be safe. Not sure if that version is new enough though.

https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/
is the upstream repo and you could 'grab' the firmware files which `dmesg` 
reports it can't find.

> -- System Information:
> Debian Release: 12.5
>   APT prefers stable-security
>   APT policy: (500, 'stable-security'), (500, 'stable')
> Architecture: amd64 (x86_64)
> 
> Versions of packages linux-image-6.1.0-18-amd64 is related to:
> ii  firmware-amd-graphics     20230210-5
> pn  firmware-atheros          <none>
> pn  firmware-bnx2             <none>
> pn  firmware-bnx2x            <none>
> pn  firmware-brcm80211        <none>
> pn  firmware-cavium           <none>
> ii  firmware-intel-sound      20230210-5
> pn  firmware-intelwimax       <none>
> pn  firmware-ipw2x00          <none>
> pn  firmware-ivtv             <none>
> ii  firmware-iwlwifi          20230210-5

My guess is that those 'backported' patches expect newer firmware then that.

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