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

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Date: Mon, 29 Jan 2024 22:23:58 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "peterz@...radead.org" <peterz@...radead.org>, "stli@...ux.ibm.com"
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Subject: Re: Several tst-robust* tests time out with recent Linux kernel

On Fri, 2024-01-19 at 14:56 +0100, Stefan Liebler wrote:
> I've reduced the test (see attachement) and now have only one process
> with three threads.

This tests fails on my setup as well:
main: start 3 threads.
#0: started: fct=1
#1: started: fct=1
#2: started: fct=1
#2: mutex_timedlock failed with 22 (round=28772)

But, after this patch:
https://lore.kernel.org/all/20240116130810.ji1YCxpg@linutronix.de/

...the attached test hangs.

However, the glibc test that was failing for me "nptl/tst-robustpi8"
passes with the linked patch applied. So I think that patch fixes the
issue I hit.

What is passing supposed to look like on the attached test?