From: Chris Wright <chrisw@osdl.org>
To: bmerry@cs.uct.ac.za
Cc: linux-kernel@vger.kernel.org
Subject: Re: Holding ref to /proc/<pid> dentry prevents task being freed
Date: Thu, 5 May 2005 09:34:13 -0700 [thread overview]
Message-ID: <20050505163413.GW23013@shell0.pdx.osdl.net> (raw)
In-Reply-To: <20050505091131.GA4472@omnius.cs.uct.ac.za>
* bmerry@cs.uct.ac.za (bmerry@cs.uct.ac.za) wrote:
> I'm busy writing a security module that does some very basic ACL stuff
> on a per-task basis. If my module obtains and holds a dentry for
> /proc/<pid> (via path_lookup), then the task_free_security hook is
> never called for that process. Since the module releases the dentry in
> task_free_security, this creates a chicken-and-egg problem and neither
> the task nor the dentry is ever released. A side-effect is that the
> module refcount never drops to 0.
Why are you holding that dentry? Some more background please.
thanks,
-chris
--
Linux Security Modules http://lsm.immunix.org http://lsm.bkbits.net
next prev parent reply other threads:[~2005-05-05 16:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-05 9:11 bmerry
2005-05-05 16:34 ` Chris Wright [this message]
2005-05-06 8:17 ` bmerry
2005-05-06 17:47 ` Chris Wright
2005-05-07 9:33 ` bmerry
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