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Date: Sat, 11 Nov 2006 01:45:33 +0300
From: Gleb Smirnoff <glebius@FreeBSD.org>
To: Barry Boes <barry.boes@acciodata.com>
Message-ID: <20061110224533.GM32700@cell.sick.ru>
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Cc: Scott Long <scottl@samsco.org>, RelEng <re@FreeBSD.org>,
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	Prafulla Deuskar <pdeuskar@FreeBSD.org>, jfv@FreeBSD.org,
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Subject: Re: EM stability
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On Fri, Nov 10, 2006 at 04:28:30PM -0600, Barry Boes wrote:
B> 
B> Luck ran out.  Hard "must press the reset button" hang.  No console
B> messages.   The system was idle at the time.
B>    Is there anything you'd like me to do to attempt to narrow down the
B> problem or get debugging output?  I do not know if the freeze was
B> related to em or something else.

In cases like this you need to prepare a kernel with debugger compiled
in and try to exit into the debugger, when the hang occurs. You can
try keyboard debugger sequence, and if it fails try serial break.

-- 
Totus tuus, Glebius.
GLEBIUS-RIPN GLEB-RIPE