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Date:   Fri, 25 Feb 2022 13:58:23 +0900
From:   Sergey Senozhatsky <senozhatsky@chromium.org>
To:     Steven Rostedt <rostedt@goodmis.org>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Petr Mladek <pmladek@suse.com>,
        Sergey Senozhatsky <senozhatsky@chromium.org>,
        John Ogness <john.ogness@linutronix.de>
Subject: Re: Strange output on the console
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On (22/02/24 23:00), Steven Rostedt wrote:
> I've been noticing that my tests have been spitting out strange output on
> the console. It would happen at boot up and then clear up. It looks like
> something screwed up with the serial timing.
> 
> Attached is a dmesg of one of my test runs as an example.
> 
> I've noticed this on both 32 bit and 64 bit x86.
> 
> I haven't had time to look deeper into this, but I figured I let you know
> about it.
> 
> And it always seems to happen right after:
> 
>   Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> 
> Maybe this is a serial issue and not a printk one? :-/

Steven, did you notice this recently?
May I perhaps suggest git bisect? (sorry)