Re: [PATCH] kconfig: Add kernel config option for fuzz testing.

[Sergey Senozhatsky]

On (19/12/16 18:59), Tetsuo Handa wrote:
[..]
> +++ b/kernel/printk/printk.c
> @@ -1198,6 +1198,14 @@ MODULE_PARM_DESC(ignore_loglevel,
>  
>  static bool suppress_message_printing(int level)
>  {
> +#ifdef CONFIG_KERNEL_BUILT_FOR_FUZZ_TESTING
> +	/*
> +	 * Changing console_loglevel causes "no output". But ignoring
> +	 * console_loglevel is easier than preventing change of
> +	 * console_loglevel.
> +	 */
> +	return (level >= CONSOLE_LOGLEVEL_DEFAULT && !ignore_loglevel);
> +#endif
>  	return (level >= console_loglevel && !ignore_loglevel);
>  }

Can you fuzz test with `ignore_loglevel'?

	-ss