[LTP] Subject: [PATCH] fs/doio:Use the snprintf function to prevent buffer overflow

[Cyril Hrubis]

Hi!
> From 044a942863dc0ac84701bc14d78f4d7fc0bb8dcb Mon Sep 17 00:00:00 2001
> From: Hao Zeng <zenghao@kylinos.cn>
> Date: Mon, 10 Apr 2023 09:17:34 +0800
> Subject: [PATCH] fs/doio:Use the snprintf function to prevent buffer overflow
>  Use the snprintf function instead of sprintf in the write_log.c file
>  Signed-off-by: Hao Zeng <zenghao@kylinos.cn>

The actual change looks good, however the patch is corrupted, looks like
your email client replaced spaces 0x20 with unicode non-breakable spaces
0xc2a0.

See: https://www.kernel.org/doc/html/v4.10/process/email-clients.html

> ---
>  testcases/kernel/fs/doio/write_log.c | 20 ++++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> 
> diff --git a/testcases/kernel/fs/doio/write_log.c b/testcases/kernel/fs/doio/write_log.c
> index e8ef9c7cb..86297b01d 100644
> --- a/testcases/kernel/fs/doio/write_log.c
> +++ b/testcases/kernel/fs/doio/write_log.c
> @@ -129,7 +129,7 @@ int wlog_open(struct wlog_file *wfile, int trunc, int mode)
>  	umask(omask);
>  
>  	if (wfile->w_afd == -1) {
> -		sprintf(Wlog_Error_String,
> +		snprintf(Wlog_Error_String,sizeof(Wlog_Error_String),
                                           ^
					   There should be space after
					   comma.

-- 
Cyril Hrubis
chrubis@suse.cz