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Date: Sat, 23 Jul 2011 09:17:01 +0200 (CEST) From: Thomas Gleixner <tglx@...utronix.de> To: Andrew Morton <akpm@...ux-foundation.org> cc: LKML <linux-kernel@...r.kernel.org>, John Stultz <john.stultz@...aro.org>, Ingo Molnar <mingo@...e.hu>, Ben Greear <greearb@...delatech.com>, stable@...nel.org Subject: Re: [patch 3/3] rtc: Limit frequency On Fri, 22 Jul 2011, Andrew Morton wrote: > On Fri, 22 Jul 2011 09:12:51 -0000 > Thomas Gleixner <tglx@...utronix.de> wrote: > > > The RTC hrtimer is self rearming. We really need to limit the > > frequency to something sensible. > > > Cc: stable@...nel.org > > Why? What failures does the current code cause? What effect do these > failures have upon users? Due to the hrtimer self rearming mode a user can DoS the machine simply because it's starved by hrtimer events. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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