linux-kernel - Re: Several tst-robust* tests time out with recent Linux kernel

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Message-ID: <20231115085102.GY3818@noisy.programming.kicks-ass.net>
Date:   Wed, 15 Nov 2023 09:51:02 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
Cc:     "fweimer@...hat.com" <fweimer@...hat.com>,
        "xry111@...111.site" <xry111@...111.site>,
        "andrealmeid@...lia.com" <andrealmeid@...lia.com>,
        "linux-api@...r.kernel.org" <linux-api@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "libc-alpha@...rceware.org" <libc-alpha@...rceware.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>
Subject: Re: Several tst-robust* tests time out with recent Linux kernel

On Wed, Nov 15, 2023 at 01:11:20AM +0000, Edgecombe, Rick P wrote:
> On Tue, 2023-11-14 at 21:14 +0100, Peter Zijlstra wrote:
> > Urgh, thanks!
> > 
> > Confirmed, the below cures things. Although I should probably make
> > that
> > FLAGS_SIZE_32 | FLAGS_SHARED against Linus' tree.
> > 
> > Let me go do a proper patch.
> 
> I saw these fail on the glibc shadow stack branch today, and I also saw
> this one failing:
> FAIL: nptl/tst-robustpi8

tip/locking/urgent (branch with the fix on) gets me:

root@...-ep:/usr/local/src/glibc# ./build/nptl/tst-robustpi8 
running child
verifying locks
running child
verifying locks
running child
verifying locks
running child
verifying locks
running child
verifying locks
root@...-ep:/usr/local/src/glibc#

Which, to my untrained eye, looks like a pass to me.