netdev - Re: [ROSE] [AX25] 6.15.10 long term stable kernel oops

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Message-ID: <af3344165cd51561f92449a27841f41d@vanheusden.com>
Date: Mon, 18 Aug 2025 12:04:17 +0200
From: Folkert van Heusden <folkert@...heusden.com>
To: Bernard Pidoux <bernard.pidoux@...e.fr>
Cc: David Ranch <dranch@...nnet.net>, linux-hams@...r.kernel.org, netdev
 <netdev@...r.kernel.org>
Subject: Re: [ROSE] [AX25] 6.15.10 long term stable kernel oops

Looks like the issue I reported a few weeks ago.
In my case not related to rose, only new connections.

On 2025-08-18 12:00, Bernard Pidoux wrote:
> Hi,
> 
> I captured a screen picture of kernel panic in linux-6.16.0 that 
> displays [mkiss]. See included picture.
> 
> Bernard
> 
> 
> Le 16/08/2025 à 20:45, Bernard Pidoux a écrit :
>> David,
>> 
>> For some reason my messages are not accepted by vger.kernel.org 
>> despite I configured thunderbird not to send html.
>> 
>> I just compiled and loaded kernel 6.15.1.
>> 
>> Up to now FPAC 4.1.4 is running fine and performing connexions with 
>> neighbour ROSE nodes.
>> 
>> I will let it run a while before starting to apply progressively the 
>> AX25 and ROSE patches committed in kernels 15.2 to 15.10
>> 
>> I will start with ax25 ones and see what happens.
>> 
>> 73 de Bernard f6bvp / ai7bg
>> 
>> 
>> 
>> Le 16/08/2025 à 19:49, Bernard Pidoux a écrit :
>>> Hi David,
>>> 
>>> Actually Ubuntu stops responding without any message. No more 
>>> response from keyboard or mouse. Only switch power !
>>> 
>>> I am working on activating kernel messages on oops.
>>> 
>>> The bug is already present in 6.15.10 so there is no reason to look 
>>> at a more recent version.
>>> 
>>> I will report any progress if I find something interesting.
>>> 
>>> This is quite a challenge for me as I did not perform this kind of 
>>> kernel investigations since nearly a decade...and I am not getting 
>>> younger !
>>> 
>>> 73 de Bernard, f6bvp / ai7bg
>>> 
>>> 
>>> Le 16/08/2025 à 19:32, David Ranch a écrit :
>>>> 
>>>> Hey Bernard,
>>>> 
>>>> Thanks for posting this issue.  Can you copy/paste in the Oops 
>>>> you're seeing?  I did see a recent ROSE issue on 
>>>> 6.16.0-rc6-next-20250718- syzkaller and I wonder if that could have 
>>>> created this issue:
>>>> 
>>>> https://groups.google.com/g/syzkaller-bugs/c/0TmBbcJ2PKE
>>>> 
>>>> Btw, I would say that posting this to netdev@...r.kernel.org would 
>>>> probably be more important than this Debian list since this is most 
>>>> likely a kernel issue and not a distro issue per se.
>>>> 
>>>> --David
>>>> KI6ZHD
>>>> 
>>>> 
>>>> On 08/16/2025 10:02 AM, Bernard Pidoux wrote:
>>>>> Hi,
>>>>> 
>>>>> I am continuously working on AX25 ROSE/FPAC node since decades, 
>>>>> running a number of RaspBerry Pi (Raspi OS 64bit) plus Ubuntu LTS 
>>>>> on a mini PC.
>>>>> 
>>>>> Stable FPAC version 4.1.4 is performing packet switch quite well 
>>>>> although some improvements are underway.
>>>>> 
>>>>> FPAC runs flawlessly with kernel 6.14.11.
>>>>> 
>>>>> However, trying FPAC under stable kernel 6.15.10 experienced a 
>>>>> frozen system when issuing some commands like connect request.
>>>>> 
>>>>> Investigations seem to show that ax25 connect is fine and that the 
>>>>> bug is probably in ROSE module .
>>>>> 
>>>>> I am presently trying to find the faulty bug that triggers the 
>>>>> kernel oops by compiling and installing previous kernel versions 
>>>>> starting with 6.15.1.
>>>>> 
>>>>> 73s de Bernard, f6bvp / ai7bg
>>>>> 
>>>>> http://f6bvp.org
>>>>> 
>>>> 
>> 


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