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Date:      Wed, 11 May 2016 17:16:13 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-virtualization@FreeBSD.org
Subject:   [Bug 209428] if_vtnet(4) panics when doing kldunload if_vtnet
Message-ID:  <bug-209428-27103-9EH75MrcU3@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-209428-27103@https.bugs.freebsd.org/bugzilla/>
References:  <bug-209428-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209428

--- Comment #6 from Kristof Provost <kp@freebsd.org> ---
(In reply to Roman Bogorodskiy from comment #5)
Yeah, but that's probably risky. I'm not sure the load order is guaranteed,=
 and
I'm also not sure that there's any guarantee that the probe function won't =
be
executed until both are loaded.

There's a couple other drivers with a similar setup. For example
sys/dev/cxgbe/t4_main.c

They've solved it with a simple counter in their mod_event function. I'd be
inclined to  do something similar.

--=20
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