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From: David Lamparter <equinox@diac24.net>
To: David Lamparter <equinox@diac24.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	davem@davemloft.net, netdev@vger.kernel.org,
	Linux Containers <containers@lists.osdl.org>
Subject: Re: [PATCH] netns: add /proc/*/net/id symlink
Date: Mon, 23 May 2011 03:47:51 +0200	[thread overview]
Message-ID: <20110523014751.GB2351982@jupiter.n2.diac24.net> (raw)
In-Reply-To: <20110523014303.GA2351982@jupiter.n2.diac24.net>

On Mon, May 23, 2011 at 03:43:03AM +0200, David Lamparter wrote:
> Then I make a mount namespace, bind-mount the net namespace, bind mount
> the mount namespace and terminate all processes that reference it (yes
> this does work, i just checked [!]).

Actually, Eric, bind-mounting a mount namespace inside itself should
probably be forbidden? No idea if you changed that (running a year-old
version of your patches here). Not only can you lose network namespaces
inside those self-referential mount namespaces but also references to
block devices, unix socket connections, etc. pp.


-David


  reply	other threads:[~2011-05-23  1:47 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-21  9:39 [PATCH] netns: add /proc/*/net/id symlink Alexey Dobriyan
2011-05-21 15:39 ` Eric W. Biederman
2011-05-21 22:30   ` Alexey Dobriyan
2011-05-22  0:15     ` Eric W. Biederman
2011-05-23  1:43       ` David Lamparter
2011-05-23  1:47         ` David Lamparter [this message]
2011-06-17 23:31           ` [PATCH 1/2] proc: Generalize proc inode allocation Eric W. Biederman
2011-06-17 23:31             ` Eric W. Biederman
2011-06-17 23:33             ` [PATCH 2/2] proc: Usable inode numbers for the namespace file descriptors Eric W. Biederman
2011-06-17 23:33               ` Eric W. Biederman
2011-06-19 23:22               ` David Miller
2011-06-20 16:06               ` Serge E. Hallyn
2011-06-20 19:50                 ` Eric W. Biederman
2011-06-19 14:20             ` [PATCH 1/2] proc: Generalize proc inode allocation Serge E. Hallyn
2011-05-23  2:02         ` [PATCH] netns: add /proc/*/net/id symlink Eric W. Biederman

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