From: Peter Hurley <peter@hurleysoftware.com>
Subject: Re: pppd service crash in linux-3.13.6
Date: Fri, 14 Mar 2014 11:02:04 -0400
Message-ID: <532319EC.8000509@hurleysoftware.com>
References: <531A37FF.4000509@totakura.in> <531DEEA6.4090808@totakura.in> <531E111A.8040207@hurleysoftware.com> <20140313170622.GA31206@redhat.com> <5321F113.7090000@hurleysoftware.com> <53230FE5.9020204@hurleysoftware.com>
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Cc: Sree Harsha Totakura <sreeharsha@totakura.in>,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	"Eric W. Biederman" <ebiederm@xmission.com>
To: Oleg Nesterov <oleg@redhat.com>
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On 03/14/2014 10:19 AM, Peter Hurley wrote:
> Plus, proc_exit_connector() uses netlink which uses user_ns.

Actually, I think this can be safely ignored since if the
netlink socket was tied to a user_ns which has just been
freed in exit_task_namespace() then the socket could not
be open in another process (otherwise the net_ns would
still have an open reference).