linux-kernel - Re: [for-linus][PATCH 3/3] bootconfig: Fix to prevent warning message if no bootconfig option

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Date:   Tue, 12 May 2020 16:40:28 +0200
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     Steven Rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org
Cc:     Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Masami Hiramatsu <mhiramat@...nel.org>
Subject: Re: [for-linus][PATCH 3/3] bootconfig: Fix to prevent warning message
 if no bootconfig option

Dear Steven,


Am 12.05.20 um 15:23 schrieb Steven Rostedt:
> From: Masami Hiramatsu <mhiramat@...nel.org>
> 
> Commit de462e5f1071 ("bootconfig: Fix to remove bootconfig
> data from initrd while boot") causes a cosmetic regression
> on dmesg, which warns "no bootconfig data" message without
> bootconfig cmdline option.
> 
> Fix setup_boot_config() by moving no bootconfig check after
> commandline option check.
> 
> Link: http://lkml.kernel.org/r/9b1ba335-071d-c983-89a4-2677b522dcc8@molgen.mpg.de
> Link: http://lkml.kernel.org/r/158916116468.21787.14558782332170588206.stgit@devnote2

It’d be great if you could update your script to include HTTPS URLs. 
That would save one redirect.

```
$ curl -I 
http://lkml.kernel.org/r/9b1ba335-071d-c983-89a4-2677b522dcc8@molgen.mpg.de
HTTP/1.1 301 Moved Permanently
[ prevent LKML HTML mail detection ]
```

> Fixes: de462e5f1071 ("bootconfig: Fix to remove bootconfig data from initrd while boot")
> Reported-by: Paul Menzel <pmenzel@...gen.mpg.de>
> Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
> Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
> ---
>   init/main.c | 10 ++++++----
>   1 file changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/init/main.c b/init/main.c
> index 1a5da2c2660c..5803ecb411ab 100644
> --- a/init/main.c
> +++ b/init/main.c
> @@ -400,9 +400,8 @@ static void __init setup_boot_config(const char *cmdline)
>   	char *data, *copy;
>   	int ret;
>   
> +	/* Cut out the bootconfig data even if we have no bootconfig option */
>   	data = get_boot_config_from_initrd(&size, &csum);
> -	if (!data)
> -		goto not_found;
>   
>   	strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
>   	parse_args("bootconfig", tmp_cmdline, NULL, 0, 0, 0, NULL,
> @@ -411,6 +410,11 @@ static void __init setup_boot_config(const char *cmdline)
>   	if (!bootconfig_found)
>   		return;
>   
> +	if (!data) {
> +		pr_err("'bootconfig' found on command line, but no bootconfig found\n");
> +		return;
> +	}
> +
>   	if (size >= XBC_DATA_MAX) {
>   		pr_err("bootconfig size %d greater than max size %d\n",
>   			size, XBC_DATA_MAX);
> @@ -446,8 +450,6 @@ static void __init setup_boot_config(const char *cmdline)
>   		extra_init_args = xbc_make_cmdline("init");
>   	}
>   	return;
> -not_found:
> -	pr_err("'bootconfig' found on command line, but no bootconfig found\n");
>   }
>   
>   #else

Reviewed-by: Paul Menzel <pmenzel@...gen.mpg.de>


Kind regards,

Paul