[PATCH][BUGFIX] cgroups: fix pid namespace bug

Paul Menage menage at google.com
Thu Jul 2 09:46:51 PDT 2009


On Thu, Jul 2, 2009 at 9:37 AM, Serge E. Hallyn<serue at us.ibm.com> wrote:
>
>        1. the only way it won't outlive the open file is if the
>                task opens the file, hands the open fd over a
>                unix socket, then exits as the last task of its
>                pidns

Right.

>        2. We don't dereference the pid_ns, so there is no actual
>                safety issue.  So it would become a problem only
>                if a new pidns gets created at that same address

Which is fairly likely given that pid_namespace is allocated from a
specific cache.

Paul


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