linux-kernel - Re: [PATCH 1/2] printk: nbcon: move locked_port flag to struct uart

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: <20240124100524.ZyAPfPU5@linutronix.de>
Date: Wed, 24 Jan 2024 11:05:24 +0100
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: John Ogness <john.ogness@...utronix.de>
Cc: Junxiao Chang <junxiao.chang@...el.com>, tglx@...utronix.de,
	rostedt@...dmis.org, linux-kernel@...r.kernel.org,
	hao3.li@...el.com, lili.li@...el.com, jianfeng.gao@...el.com,
	linux-rt-users@...r.kernel.org
Subject: Re: [PATCH 1/2] printk: nbcon: move locked_port flag to struct
 uart_port

On 2024-01-24 10:53:10 [+0106], John Ogness wrote:
> On 2024-01-23, Junxiao Chang <junxiao.chang@...el.com> wrote:
> > Console pointer in uart_port might be shared among multiple uart
> > ports.
> 
> I still want to investigate why the pointer is shared. This sounds
> sloppy or dangerous.

I have x86 a server box and PNP enumerates two UARTs (8250). Only one is
wired up but both can be specified as console=.
What do I need to do to reproduce this here? Using console= twice does
not do the trick.

Sebastian