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Date:      Wed, 31 Mar 2004 17:48:31 -0500
From:      John Baldwin <jhb@FreeBSD.org>
To:        Lukas Ertl <le@FreeBSD.org>
Cc:        current@FreeBSD.org
Subject:   Re: if_ndis related panic in propagate_priority
Message-ID:  <200403311748.31702.jhb@FreeBSD.org>
In-Reply-To: <20040331225713.H652@korben>
References:  <20040330200924.Y641@korben> <200403301907.06346.jhb@FreeBSD.org> <20040331225713.H652@korben>

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On Wednesday 31 March 2004 03:57 pm, Lukas Ertl wrote:
> On Tue, 30 Mar 2004, John Baldwin wrote:
> > On Tuesday 30 March 2004 01:14 pm, Lukas Ertl wrote:
> > > Hi,
> > >
> > > lately I'm seeing random panics when loading the if_ndis module,
> > > sometimes right after loading it, sometimes quite some time later.
> >
> > Do you have invariants on?
>
> No, no INVARIANTS, no WITNESS.

Ok, well, if a thread sleeps while holding a lock then you can get this panic, 
and INVARIANTS and WITNESS catch those acts with a more informative message.
I would recommend at least enabling INVARIANTS.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org



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