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Date:      Sun, 24 Mar 2013 14:05:07 +0200
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        Ivan Klymenko <fidaj@ukr.net>
Cc:        freebsd-current@freebsd.org, freebsd-ports@freebsd.org
Subject:   Re: Kernel panic CURRENT r248596 at virtualbox-ose-kmod module load
Message-ID:  <20130324120507.GX3794@kib.kiev.ua>
In-Reply-To: <20130323132627.04bf7ef4@nonamehost>
References:  <20130323132627.04bf7ef4@nonamehost>

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On Sat, Mar 23, 2013 at 01:26:27PM +0200, Ivan Klymenko wrote:
> I have
> uname -a
> FreeBSD nonamehost 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r248596: Fri
> Mar 22 01:17:08 EET 2013
> ivan@nonamehost:/usr/obj/usr/src/sys/GENERIC  amd64
>=20
> I updated the ports tree to r314921 and recompiled virtualbox-ose-kmod
>=20
> After load the module a have kernel panic.
>=20
> Panic  String:  Lock  vm  object  not  exclusively   locked   @
> /usr/src/sys/vm/vm_page.c:1396
>=20
> http://pkgupdate.nevosoft.ru/backtrace.txt

This looks like a vbox issue, the driver did not properly locked
the object passed to the vm_page_alloc_contig().

If you want this fixed, you probably need to look up the code yourself,
compiling the vbox kld with debugging, finding the offending call
to vm_page_alloc_contig() and looking around it to see which object is
passed and why it is not locked.

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