linux-kernel - Re: [BUG] Oops on boot (probably ACPI related)

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Message-ID:  <pan.2006.09.27.17.56.13.80913@automagically.de>
Date:	Wed, 27 Sep 2006 19:56:13 +0200
From:	Markus Dahms <mad@...omagically.de>
To:	linux-kernel@...r.kernel.org
Cc:	linux-acpi@...r.kernel.org
Subject:  Re: [BUG] Oops on boot (probably ACPI related)

Am Wed, 27 Sep 2006 14:24:47 +0200 schrieb Rolf Eike Beer:

> I get this on my machine. SMP kernel, linus git from this morning. .config
> and test available on request.

I encountered a similar bug, but a lot earlier. It seems to be a locking
problem, as it is lockdep which does the BUG() for me.
It's also an SMP machine in my case, acpi_os_wait_semaphore() is in the
call chain, too. No textual output (no serial connection attached, too
early for netconsole), but a screenshot:

http://automagically.de/images/linux-2.6.18+-acpi-lockup.jpg (154kB)

2.6.18 works for me, newer git versions explode.

Maybe it's an SMP-related problem, but it does BUG() before initialization
of the second CPU.

Markus

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