linux-kernel - Re: [PATCH tty-next v5 5/6] serial: 8250: Switch to nbcon console

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <844is8qoqe.fsf@jogness.linutronix.de>
Date: Thu, 09 Oct 2025 13:55:29 +0206
From: John Ogness <john.ogness@...utronix.de>
To: Thierry Reding <thierry.reding@...il.com>
Cc: Jon Hunter <jonathanh@...dia.com>, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>, Thierry Reding <treding@...dia.com>, Jiri
 Slaby <jirislaby@...nel.org>, Petr Mladek <pmladek@...e.com>, Sergey
 Senozhatsky <senozhatsky@...omium.org>, Steven Rostedt
 <rostedt@...dmis.org>, Thomas Gleixner <tglx@...utronix.de>, Esben
 Haabendal <esben@...nix.com>, linux-serial@...r.kernel.org,
 linux-kernel@...r.kernel.org, Andy Shevchenko
 <andriy.shevchenko@...ux.intel.com>, Arnd Bergmann <arnd@...db.de>, Tony
 Lindgren <tony@...mide.com>, Niklas Schnelle <schnelle@...ux.ibm.com>,
 Serge Semin <fancer.lancer@...il.com>, "linux-tegra@...r.kernel.org"
 <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH tty-next v5 5/6] serial: 8250: Switch to nbcon console

Hi Thierry,

On 2025-10-09, Thierry Reding <thierry.reding@...il.com> wrote:
>> Thierry, do you have a Tegra124 Jetson TK1 handy to test this change on?
>
> Yes, I do. I reapplied patches 5 and 6 from the series (resolved a tiny
> conflict for patch 5) and reran the tests. Same results as back in
> January, though. Basically the first suspend doesn't work (it exits back
> to userspace after a few seconds) and the second attempt then hangs. No
> idea why that would be happpening.

[...]

> John, I'm happy to test any other patches if you've got any ideas on
> what could be wrong.

Thanks for your support. I created a branch on a public git repository
[0] so that we have a common source to work with. I will push additional
debug-commits on top.

I am taking this email-debugging-session offlist. I will post again to
this thread once we come to some conclusion.

John

[0] https://github.com/Linutronix/linux (branch nvidia/debug-8250-nbcon)