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Date:      Mon, 21 Aug 2006 18:32:00 +0400
From:      Yar Tikhiy <yar@comp.chem.msu.su>
To:        Pawel Jakub Dawidek <pjd@FreeBSD.org>
Cc:        current@FreeBSD.org, Kris Kennaway <kris@obsecurity.org>
Subject:   Re: mount * 2 + umount + lookup = GEOM panic
Message-ID:  <20060821143200.GB50800@comp.chem.msu.su>
In-Reply-To: <20060820102405.GC1326@garage.freebsd.pl>
References:  <20060818184656.GB16008@comp.chem.msu.su> <20060818191457.GA78998@xor.obsecurity.org> <20060818202508.GA88159@garage.freebsd.pl> <20060819070804.GA23066@comp.chem.msu.su> <20060820102405.GC1326@garage.freebsd.pl>

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On Sun, Aug 20, 2006 at 12:24:05PM +0200, Pawel Jakub Dawidek wrote:
> On Sat, Aug 19, 2006 at 11:08:05AM +0400, Yar Tikhiy wrote:
> > On Fri, Aug 18, 2006 at 10:25:08PM +0200, Pawel Jakub Dawidek wrote:
> > > No, it's difficult to solve in a architectural clean way, but IMHO this
> > > bug should be fixed. I've a fix for this (which allows for multiple
> > > read-only mounts). It's hackish, but works.
> > > 
> > > Unfortunately phk@ didn't agree on committing it, so next time, please
> > > CC him:)
> > 
> > Just to satisfy my curiosity:  Do you have references to a discussion
> > of the problem?  When such a simple script triggers an architectural
> > issue, the latter is definitely worth taking a glance at. :-)
> 
> I'm not sure if this was discussed in public. Anyway, the patch is here:
> 
> 	http://people.freebsd.org/~pjd/patches/mro_mount.patch
> 
> (I hope it is up-to-date).

Works for me!  That is, I can no longer reproduce the panic with
it applied.  I'm afraid I'm too ignorant to dig the patch though.

-- 
Yar



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