Received-SPF: pass (google.com: domain of linux-kernel+bounces-120711-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
From: Tony Lindgren <tony@atomide.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Petr Mladek <pmladek@suse.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	John Ogness <john.ogness@linutronix.de>,
	Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: "David S . Miller" <davem@davemloft.net>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Dhruva Gole <d-gole@ti.com>,
	=?UTF-8?q?Ilpo=20J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>,
	Johan Hovold <johan@kernel.org>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	linux-kernel@vger.kernel.org,
	linux-serial@vger.kernel.org,
	Sebastian Reichel <sre@kernel.org>,
	linux-doc@vger.kernel.org
Subject: [PATCH v7 2/7] printk: Don't try to parse DEVNAME:0.0 console options
Date: Wed, 27 Mar 2024 12:59:36 +0200
Message-ID: <20240327110021.59793-3-tony@atomide.com>
In-Reply-To: <20240327110021.59793-1-tony@atomide.com>
References: <20240327110021.59793-1-tony@atomide.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Currently console_setup() tries to make a console index out of any digits
passed in the kernel command line for console. In the DEVNAME:0.0 case,
the name can contain a device IO address, so bail out on console names
with a ':'.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 kernel/printk/printk.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2498,6 +2498,10 @@ static int __init console_setup(char *str)
 	if (console_opt_save(str, brl_options))
 		return 1;
 
+	/* Don't attempt to parse a DEVNAME:0.0 style console */
+	if (strchr(str, ':'))
+		return 1;
+
 	/*
 	 * Decode str into name, index, options.
 	 */
-- 
2.44.0