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Date: Thu, 8 Jul 2004 12:12:48 -0400 (EDT)
From: Robert Watson <rwatson@FreeBSD.org>
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To: Don Lewis <truckman@FreeBSD.org>
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Subject: Re: today's CURRENT lockups
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On Thu, 8 Jul 2004, Don Lewis wrote:

> I got bit by this problem when I tried to do some browsing on my
> Thinkpad R40 after my primary (4.10-STABLE) machine lost a disk. 
> 
> It's a July 5th kernel with SCHED_ULE, DDB, INVARIANTS, WITNESS, and
> ACPI. 
> 
> I couldn't switch to a serial console because the other end of the
> serial cable connects to the dead machine. 

If you're using sched_ule between July 3 and July 6, you need to update to
sched_ule.c:1.113, or you may experience hangs.

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Principal Research Scientist, McAfee Research