[amd64] Reproducible cold boot failure (reboot succeeds) in -CURRENT

Attilio Rao attilio at freebsd.org
Fri Nov 11 12:15:59 UTC 2011

Can you try rebuilding your kernel and modules from scratch and see if
it fixes your problem?


2011/11/11 Stefan Esser <se at freebsd.org>:
> Am 10.11.2011 11:32, schrieb Attilio Rao:
>> 2011/11/10 Stefan Esser<se at freebsd.org>:
>>> I can produce further debug output on demand, but I do not have a serial
>>> or
>>> firewire console setup for debugging.
>>> Is anybody else affected by this boot problem?
>> Can you setup a videocamera or a simple serial console?
>> Did you try to boot with both -s and -v on?
>> Attilio
> I should be able to attach a serial console.
> Booting with -s should make no difference (since booting fails during a very
> early initialization stage).
> I tried -v, but found that I could not reproduce the cold boot problem
> without the system being at least in S5 for hours (just switching off
> power and waiting a few minutes did not suffice, but this morning the
> system again booted only on the first attempt). This behavior obviously
> limits the rate of tests possible ...
> It looks as if the memory holding the loaded kernel and/or modules is
> corrupted before the kernel is reloaded and started, as indicated by
> this morning's boot failure:
> kldload: unexpected relocation type 268435457
> kldload: unexpected relocation type 67108865
> Fatal trap 12: ...
> The rest of the panic message and back trace is identical to the trap 12
> panic details in my previous message.
> It really looks as if the loaded kernel image is corrupted at random
> positions, leading to random panics (but often of the type trap 12 or
> page fault in kernel) when execution reaches damaged code or data.
> A reboot succeeded without any problem as in all prior cases ...
> Any ideas?
> Regards, STefan
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