Re: Kernel panic

From: Cameron Berkenpas <cam_at_neo-zeon.de>
Date: Tue, 19 Sep 2023 15:21:23 UTC
This looks similar (if not exactly the same) as an issue I reported back 
in August:
https://lists.freebsd.org/archives/freebsd-ppc/2023-August/000120.html

On 9/19/23 06:56, Justin Hibbits wrote:
> On Tue, 19 Sep 2023 15:23:25 +0200
> Luciano Mannucci <luciano@vespaperitivo.it> wrote:
>
>> This morning one of my freeBSD production machine did crash. Beeing a
>> VM running under qemu/kvm on an ubuntu linux hardware, I was unable to
>> get the panic video message issued when the machine crashed. Of course
>> at the reboot I got a vmcore file in /var/crash, along with core.txt
>> and info. The file core.txt says:
>>
>> Unable to find a kernel debugger.
>> Please install the devel/gdb port or gdb package.
>>
>> while the info file is:
>>
>> Dump header from device: /dev/vtbd0s2b
>>    Architecture: powerpc64
>>    Architecture Version: 1
>>    Dump Length: 865083392
>>    Blocksize: 512
>>    Compression: none
>>    Dumptime: 2023-09-19 09:04:31 +0200
>>    Hostname: numeron
>>    Magic: FreeBSD Kernel Dump
>>    Version String: FreeBSD 13.1-RELEASE-p5
>> releng/13.1-n250174-753d65a19a55 GENERIC Panic String: data storage
>> interrupt trap Dump Parity: 907562729
>>    Bounds: 1
>>    Dump Status: good
>>
>> what shoukd I do to know what did kill my machine?
>>
>> Thanks to all,
>>
>> Luciano.
> Install the gdb package, then run kgdb on the core as:
>
> kgdb -c /var/crash/vmcore.0
>
> - Justin
>