Re: Panic while making buildlernel on RPi3

On 2022-Mar-4, at 17:29, Mark Millard <[email protected]> wrote:

> On 2022-Mar-4, at 13:48, bob prohaska <[email protected]> wrote:
> 
>> For the first time a panic has occurred while making buildkernel
>> on an RPi3. The same machine successfully ran stress2's misc/all.sh
>> test suite for a couple of days, so I'm surprised. Granted, that was
>> a few updates ago and this is on -current, but still..... buildkernel
>> is not the trigger expected.
>> 
>> The backtrace and build logs
> 
> Unfortunately, the crash means that the buffers were not
> flushed to media when the problem occurred. The build log
> is incomplete compared to what actually built and where
> it actually stopped.
> 
> So I'm not sure how you got:
> 
> --- ng_pppoe.kld ---
> ld: error: no input files
> *** [ng_pppoe.kld] Error code 1

Poorly worded on my part. I mean that I'm not sure how
you would know it was "in the same place" when you
re-ran.

> When I looked at the buildkernel.log file provided,
> it stopped without such:
> 
> --- all_subdir_netgraph ---
> Building /usr/obj/usr/src/arm64.aarch64/sys/GENERIC/modules/usr/src/sys/modules/netgraph/pptpgre/ng_pptpgre.o
> 
> It had no more.
> 
> 
> With the then-running kernel file and its .debug file in
> place, it would be possible to dump the instructions
> in _rm_rlock_debug(), sysctl_root_handler_locked(),
> sysctl_root(), and so on. Someone might then be able to
> associate the code around:
> 
> _rm_rlock_debug+0x8c
> sysctl_root_handler_locked+0x140
> sysctl_root+0x1ac
> userland_sysctl+0x140
> 
> with whatever corresponds in the source code.
> 
>> are at 
>> http://www.zefox.net/~fbsd/rpi3/crashes/20220304/readme
>> but unfortunately I didn't anticipate trouble and so didn't
>> capture very much.
>> 
> 
> 



===
Mark Millard
marklmi at yahoo.com