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Date:      Thu, 18 Jun 2009 21:01:45 GMT
From:      vwe@FreeBSD.org
To:        adamk@voicenet.com, vwe@FreeBSD.org, freebsd-bugs@FreeBSD.org
Subject:   Re: kern/135692: [mtx] [witness] blockable sleep lock - kernel panic on 8.0-CURRENT
Message-ID:  <200906182101.n5IL1jwM095090@freefall.freebsd.org>

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Synopsis: [mtx] [witness] blockable sleep lock - kernel panic on 8.0-CURRENT

State-Changed-From-To: open->feedback
State-Changed-By: vwe
State-Changed-When: Thu Jun 18 20:54:21 UTC 2009
State-Changed-Why: 
Adam,
while checking your issue for a moment, it seems like your issue
should not be seen when using a kernel w/o INVARIANTS support.
That does not mean, it will work properly and is the suggested way.
To get the real source of trouble, I would like to see a full backtrace.
Please do the following (while vboxdrv.ko is loaded):
``asf -ks `sysctl -n kern.module_path` kernel.asf ''
kgdb /boot/kernel/kernel /path/to/dump/dir
 and inside kgdb:
 add-symbol-file kernel.asf
 bt full

http://www.freebsd.org/cgi/query-pr.cgi?pr=135692



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