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From:   Thomas Gleixner <tglx@linutronix.de>
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To:     Nico Pache <npache@redhat.com>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        Ingo Molnar <mingo@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Darren Hart <dvhart@infradead.org>,
        Davidlohr Bueso <dave@stgolabs.net>,
        =?utf-8?Q?An?= =?utf-8?Q?dr=C3=A9?= Almeida 
        <andrealmeid@collabora.com>,
        Arjan van de Ven <arjan@infradead.org>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Matthew Wilcox <willy@infradead.org>
Subject: Re: [RFC 2/3] futex: exit: Print a warning when futex_cleanup fails
In-Reply-To: <90124b02-76b5-d775-ac7d-a2e9d7677fa1@redhat.com>
References: <20220421190533.1601879-1-npache@redhat.com>
 <20220421190533.1601879-3-npache@redhat.com> <87r15qrwdt.ffs@tglx>
 <90124b02-76b5-d775-ac7d-a2e9d7677fa1@redhat.com>
Date:   Fri, 22 Apr 2022 16:42:52 +0200
Message-ID: <87r15p5gcz.ffs@tglx>
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On Fri, Apr 22 2022 at 10:23, Nico Pache wrote:
> On 4/21/22 16:53, Thomas Gleixner wrote:
>> On Thu, Apr 21 2022 at 15:05, Nico Pache wrote:
>> Robust futexes are best effort as I explained you before and spamming
>> dmesg won't help anything.
> It would have helped find the OOM/Robust Futex issue more quickly. It may also
> help detect breakages in the pthread code (or any other users of robust futex)
> if someone is doing something incorrectly.

If we follow that line of argumentation then we have to sprinkle printks
en masse all over the place as there are a gazillion ways to create hard
to debug issues.

Thanks,

        tglx