From owner-freebsd-scsi@freebsd.org  Thu Feb 11 09:44:05 2016
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Subject: Re: Panic on reloading a driver with same DEVICE_PROBE() return value
To: John Baldwin <jhb@FreeBSD.org>, Scott Long <scott4long@yahoo.com>
References: <CAK=zhgoGwXSsD-mNF=jGov1FJFnpM7m_fZ0Jwsq4JR5yazB+ww@mail.gmail.com>
 <2227929.z5Tr1XC1Xs@ralph.baldwin.cx>
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 <1675870.rYHsh4pVC7@ralph.baldwin.cx>
Cc: scsi@FreeBSD.org, Sreekanth Reddy <sreekanth.reddy@broadcom.com>,
 ken@FreeBSD.org, freebsd-current@FreeBSD.org
From: Andriy Gapon <avg@FreeBSD.org>
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Date: Thu, 11 Feb 2016 11:43:02 +0200
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On 10/02/2016 01:02, John Baldwin wrote:
> I'm actually not certain of what triggered the fault.  The check that emits
> the printf should also be failing the kldload with EEXIST (but that doesn't
> work for the case where both are compiled into the kernel).  The new driver
> should have just never been registered, but then I'm not sure how its method
> could be called at all.  The only reference to the driver's methods are in the
> struct driver which also has the associated softc size (so you shouldn't get
> a mismatch between softc size and the driver methods used).

I haven't really followed this thread and my memory about my own problem has
significantly faded, but could the issue #2 in the following post be related?
http://thread.gmane.org/gmane.os.freebsd.current/147256
Sorry for the noise if it's totally unrelated.

-- 
Andriy Gapon