linux-kernel - Re: sched_setscheduler() vs idle

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Message-ID: <1432824866.3237.198.camel@gmail.com>
Date:	Thu, 28 May 2015 16:54:26 +0200
From:	Mike Galbraith <umgwanakikbuti@...il.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	ktkhai@...allels.com
Subject: Re: sched_setscheduler() vs idle_balance() race

On Thu, 2015-05-28 at 15:53 +0200, Peter Zijlstra wrote:

> Say, how easy can that thing be reproduced?

It doesn't seem to take the reporter very long to blow their box up.
What they're doing must be pretty darn uncommon though.

I have the source to a test application, no destructions to go with it
though, and little time to play around.  It has to be installed and
whatnot, it's not the desired make-it-go-boom.c.

> The below is compile tested only, but it might just work if I didn't
> miss anything :-)

I'll take it for a spin, and take a peek at the application.

	-Mike

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