Re: Holding ref to /proc/<pid> dentry prevents task being freed

[Chris Wright]

* bmerry@xxxxxxxxxxxx (bmerry@xxxxxxxxxxxx) 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
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