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Date: Tue, 15 Jul 2008 15:40:44 +0200
From: Kris Kennaway <kris@FreeBSD.org>
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To: Yony Yossef <yonyossef.lists@gmail.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: options WITNESS and locks
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Yony Yossef wrote:
> Something is still unclear. All my locks are MTX_DEF type, which means
> sleepable, including the one specified in the crash report (MTNIC state
> semaphore).
> This crash happens when I try to call bus_resource_alloc_any for a SYS_REQ
> which is trying to obtain the second lock (ACPI root bus). How come my
> MTX_DEF lock is being treated as as non-sleepable?

MTX_DEF locks *are* non-sleepable :-)

Kris