linux-kernel - Re: x86_64 Question: Are concurrent IPI requests safe?

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Date:	Wed, 11 May 2016 19:46:30 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc:	tglx@...utronix.de, mingo@...nel.org, akpm@...ux-foundation.org,
	mgorman@...hsingularity.net, mhocko@...nel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: x86_64 Question: Are concurrent IPI requests safe?

On Thu, May 12, 2016 at 12:19:07AM +0900, Tetsuo Handa wrote:
> Well, I came to feel that this is caused by down_write_killable() bug.
> I guess we should fix down_write_killable() bug first.

There's a patch you can try in that thread...

  lkml.kernel.org/r/20160511094128.GB3190@...ns.programming.kicks-ass.net