linux-kernel - Re: [RESEND] shm: shm exit scalability fixes

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Message-ID: <1403050539.4155.2.camel@buesod1.americas.hpqcorp.net>
Date:	Tue, 17 Jun 2014 17:15:39 -0700
From:	Davidlohr Bueso <davidlohr@...com>
To:	Jack Miller <millerjo@...ibm.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	Milton Miller II <miltonm@...ibm.com>, anton@....ibm.com
Subject: Re: [RESEND] shm: shm exit scalability fixes

On Tue, 2014-06-17 at 14:55 -0500, Jack Miller wrote:
> Even if this is synthetic, the testcase could also be seen as proof of an
> unprivileged denial of service as an arbitrary user could run bust_shm_exit
> and subsequently start overloading the system.

We have the shmmni limit (and friends) for that.

Thanks,
Davidlohr

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