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Message-ID: <ca09d15f-50ab-452c-a3d5-f2b4cde6426f@sirena.org.uk>
Date:   Wed, 2 Aug 2023 19:19:50 +0100
From:   Mark Brown <broonie@...nel.org>
To:     kernel test robot <oliver.sang@...el.com>
Cc:     Tony Lindgren <tony@...mide.com>, oe-lkp@...ts.linux.dev,
        lkp@...el.com, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Dhruva Gole <d-gole@...com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        John Ogness <john.ogness@...utronix.de>,
        Johan Hovold <johan@...nel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Vignesh Raghavendra <vigneshr@...com>
Subject: Re: [PATCH v5 3/3] serial: core: Fix serial core controller port
 name to show controller id

On Wed, Aug 02, 2023 at 04:15:28PM +0800, kernel test robot wrote:

> kernel test robot noticed machine hang on:

> commit: 4de64f4800a581e7eeba6392b3b2ce2131195145 ("[PATCH v5 3/3] serial: core: Fix serial core controller port name to show controller id")
> url: https://github.com/intel-lab-lkp/linux/commits/Tony-Lindgren/serial-core-Controller-id-cannot-be-negative/20230725-134452
> base: https://git.kernel.org/cgit/linux/kernel/git/gregkh/tty.git tty-testing
> patch link: https://lore.kernel.org/all/20230725054216.45696-4-tony@atomide.com/
> patch subject: [PATCH v5 3/3] serial: core: Fix serial core controller port name to show controller id
> 
> in testcase: boot
> 
> compiler: gcc-12
> test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz (Cascade Lake) with 512G memory

I've also bisected this commit as causing boot hangs on at least the
i.MX8MP-EVK, though most of the boards in my lab and a huge swathe of
those in KernelCI are out:

   https://linux.kernelci.org/test/job/next/branch/master/kernel/next-20230802/plan/baseline/

which is having a pretty devastating effect on -next testing.

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