linux-kernel - Re: problematic rc9 futex changes.

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Date:   Tue, 23 Jan 2018 09:33:00 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Dave Jones <davej@...emonkey.org.uk>,
        Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: problematic rc9 futex changes.

On Tue, Jan 23, 2018 at 12:34:46AM -0500, Dave Jones wrote:
> c1e2f0eaf015fb: "futex: Avoid violating the 10th rule of futex" seems to
> make up a few new rules to violate.
> 
> Coverity picked up these two problems in the same code:
> 

Yeah, Geert also spotted it:

  https://lkml.kernel.org/r/20180122103947.GD2228@hirez.programming.kicks-ass.net

I've been running the robustpi tests from glibc but have so far failed
to actually trigger the bug. I think I'll just write up a Changelog and
post the fix from the above link.