linux-kernel - Re: [PATCH v12 20/21] selftests/futex: Add futex_priv

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Message-ID: <231a9862-58ea-4a6d-8893-862776d9deca@sirena.org.uk>
Date: Tue, 27 May 2025 13:35:50 +0100
From: Mark Brown <broonie@...nel.org>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-kernel@...r.kernel.org,
	André Almeida <andrealmeid@...lia.com>,
	Darren Hart <dvhart@...radead.org>,
	Davidlohr Bueso <dave@...olabs.net>, Ingo Molnar <mingo@...hat.com>,
	Juri Lelli <juri.lelli@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Waiman Long <longman@...hat.com>
Subject: Re: [PATCH v12 20/21] selftests/futex: Add futex_priv_hash

On Tue, May 27, 2025 at 02:23:32PM +0200, Sebastian Andrzej Siewior wrote:
> On 2025-05-27 12:28:00 [+0100], Mark Brown wrote:

> > This newly added test is not running successfully on arm64, it looks
> > like it's just a straightforward integration issue:

> > # Usage: futex_priv_hash
> > #   -c    Use color
> > #   -g    Test global hash instead intead local immutable 
> > #   -h    Display this help message
> > #   -v L  Verbosity level: 0=QUIET 1=CRITICAL 2=INFO

> That is odd. If I run ./run.sh then it passes. I tried it with forcing
> COLOR=-c and without it. This is the only option that is passed. That is on
> x86 however but I doubt arm64 is doing anything special here.

> A bit puzzled here.

Yeah, I was a bit confused as well.  This is running with an installed
copy of the selftests and IIRC the build is out of tree so it's possible
something is different with that path compared to what you're doing?
It's a common source of problems?

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