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Date:      Fri, 4 Mar 2022 17:36:20 -0800
From:      Mark Millard <marklmi@yahoo.com>
To:        bob prohaska <fbsd@www.zefox.net>
Cc:        freebsd-arm@freebsd.org
Subject:   Re: Panic while making buildlernel on RPi3
Message-ID:  <29044F99-661A-4C75-9493-28857DAB963F@yahoo.com>
In-Reply-To: <E30ECA49-14A0-49A1-9B36-BE25FD646CBF@yahoo.com>
References:  <20220304214836.GA21411@www.zefox.net> <E30ECA49-14A0-49A1-9B36-BE25FD646CBF@yahoo.com>

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On 2022-Mar-4, at 17:29, Mark Millard <marklmi@yahoo.com> wrote:

> On 2022-Mar-4, at 13:48, bob prohaska <fbsd@www.zefox.net> wrote:
>=20
>> 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.
>>=20
>> The backtrace and build logs
>=20
> 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.
>=20
> So I'm not sure how you got:
>=20
> --- 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:
>=20
> --- all_subdir_netgraph ---
> Building =
/usr/obj/usr/src/arm64.aarch64/sys/GENERIC/modules/usr/src/sys/modules/net=
graph/pptpgre/ng_pptpgre.o
>=20
> It had no more.
>=20
>=20
> 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:
>=20
> _rm_rlock_debug+0x8c
> sysctl_root_handler_locked+0x140
> sysctl_root+0x1ac
> userland_sysctl+0x140
>=20
> with whatever corresponds in the source code.
>=20
>> are at=20
>> http://www.zefox.net/~fbsd/rpi3/crashes/20220304/readme
>> but unfortunately I didn't anticipate trouble and so didn't
>> capture very much.
>>=20
>=20
>=20



=3D=3D=3D
Mark Millard
marklmi at yahoo.com




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