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

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Message-ID: <acd04154-25a5-4721-a62b-36827a6e4e47@free.fr>
Date: Mon, 18 Aug 2025 12:00:33 +0200
From: Bernard Pidoux <bernard.pidoux@...e.fr>
To: 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

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
>>>>
>>>
> 

Download attachment "kernel_panic_6.16.0.jpg" of type "image/jpeg" (3034185 bytes)