Date: Wed, 27 Jun 2012 10:06:43 -0600 From: "Kenneth D. Merry" <ken@freebsd.org> To: Michael Butler <imb@protected-networks.net> Cc: Benjamin Kaduk <kaduk@mit.edu>, current@freebsd.org Subject: Re: Removing an SDHC card causes a kernel panic on -current Message-ID: <20120627160643.GA2225@nargothrond.kdm.org> In-Reply-To: <4FEB1743.506@protected-networks.net> References: <4FE9D958.4000901@protected-networks.net> <alpine.GSO.1.10.1206261929300.18441@multics.mit.edu> <20120627022909.GA153@nargothrond.kdm.org> <4FEB1743.506@protected-networks.net>
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On Wed, Jun 27, 2012 at 10:22:59 -0400, Michael Butler wrote: > On 06/26/12 22:29, Kenneth D. Merry wrote: > > On Tue, Jun 26, 2012 at 19:41:07 -0400, Benjamin Kaduk wrote: > >> On Tue, 26 Jun 2012, Michael Butler wrote: > >> > >>> As follows, in "g_disk_providergone", a NULL pointer reference?: > >> > >> g_disk_providergone() is new in r237518 (by ken); ken cc'd. > > > > Can you try the attached patch to sys/geom/geom_disk.c? > > This fixes the panic :-) Great! I just committed it. > > Also, do you have full dmesg information for when the panic happened? > > > > It looks like disk_destroy() has already been called in this case, and I > > suppose that's likely to happen for any of the users of the GEOM disk class > > that haven't been updated with the reference count changes I made in da(4). > > (i.e. all of the rest of them.) > > > > Let me know whether this works for you. > > All I have is the following leading up to my removal of the card (and > the restart afterwards): Thanks! Ken -- Kenneth Merry ken@FreeBSD.ORG
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