Re: [PATCH] printk: Check valid console index for preferred console

[Tony Lindgren]

* Tony Lindgren <tony@xxxxxxxxxxx> [700101 02:00]:
> --- a/kernel/printk/printk.c
> +++ b/kernel/printk/printk.c
> @@ -2410,6 +2410,10 @@ static int __add_preferred_console(char *name, int idx, char *options,
>  	struct console_cmdline *c;
>  	int i;
>  
> +	/* See struct console */
> +	if (idx > SHRT_MAX)
> +		return -EINVAL;
> +

We can just use const short idx for preferred console and return an error
for negative values for preferred console. I'll send out v2 patch.

Regards,

Tony