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Date:      Wed, 19 Oct 2005 18:18:04 -0400
From:      Brian Fundakowski Feldman <green@FreeBSD.org>
To:        Pawel Jakub Dawidek <pjd@FreeBSD.org>
Cc:        "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, FreeBSD current mailing list <current@FreeBSD.org>
Subject:   Re: mount memory modified after free
Message-ID:  <20051019221804.GA43031@green.homeunix.org>
In-Reply-To: <20051016194819.GB3017@garage.freebsd.pl>
References:  <Pine.BSF.4.53.0510151551460.28204@e0-0.zab2.int.zabbadoz.net> <20051016194819.GB3017@garage.freebsd.pl>

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On Sun, Oct 16, 2005 at 09:48:19PM +0200, Pawel Jakub Dawidek wrote:
> On Sat, Oct 15, 2005 at 04:00:08PM +0000, Bjoern A. Zeeb wrote:
> +> Hi,
> +> 
> +> I had /dev/ad8s4d mounted read only to /shared and
> +> /local/building/ports/shared, then unounted /shared and did a
> +> mount -u -o rw /local/building/ports/shared *kaboom*
> 
> This is known problem. Multiple read-only mounts aren't safe.

Do you mean that multiply-mounting both read-write and read-only isn't
safe?  I don't think multiple read-only mounts are unsafe.

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\



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